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Everything You Need to Know About the TSA’s Liquid Limit

The tsa allows liquids under 3.4 ounces in your carry-on—but what’s considered a “liquid” isn’t always obvious..

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Backpack in tray at TSA check

Don’t forget to remove your liquids when going through TSA screening.

Photo by Jaromir Chalabala/Shutterstock

Whether you’re a carry-on-only kind of person or not , knowing the Transportation Security Administration’s (TSA) liquid limits is essential for anyone who travels by plane in the United States. Yet understanding which of your toiletries, foods, and other items even count as “liquid”—let alone how best to pack them—can get confusing. Use this guide to understand the TSA’s rules and restrictions about liquids, common exceptions, and tips to help ensure your next airport security screening goes smoothly.

What is the TSA liquid limit?

The TSA’s liquid limit for carry-ons—known as the 3-1-1 rule—allows travelers to pack liquids, aerosols, gels, creams, and pastes under 3.4 ounces (100 milliliters) in their carry-on bags. Passengers are allowed up to one quart-sized bag per person , or roughly nine 3.4-ounce containers in a single quart-sized bag. Anything more will have to go in a checked bag or risk being tossed out.

If your liquids are stored in containers larger than 3.4 ounces, even if there’s only 3.4 ounces left inside the bottle, you can’t bring them through security.

Completely empty bottles, such as your reusable water bottle , are allowed through the TSA checkpoint since (spoiler alert!) they don’t contain any liquids at that moment.

Which toiletries TSA allows in your carry-on

The TSA allows all of the following common toiletries in your carry-on only in containers that are 3.4 ounces or less:

  • Shampoos and conditioners
  • Lotions and sunscreen
  • Gel hair products

In other words: yes, you can bring toothpaste, deodorant, and sunscreen through TSA checkpoints but only if they are in travel-sized containers.

Powders and powder-like substances, including baby powder and some makeup items, aren’t restricted in your carry-on bag. But if you’re carrying more than 12 ounces (350 milliliters) of a powder, you’ll need to place it in a separate bin for X-ray screening, and it may be subject to additional screening—so it’s a good idea to budget an extra few minutes at the security checkpoint if you think this might happen.

Tips for packing your toiletries in your carry-on

To comply with TSA regulations, invest in small, reusable toiletry bottles, like these capsules by Cadence.

To comply with TSA regulations, invest in small, reusable toiletry bottles, like these capsules by Cadence.

Courtesy of Cadence

Especially if you don’t have TSA PreCheck , it’s helpful to pack all of your toiletries in a quart-sized (or smaller) clear plastic toiletry bag for screening. Although improved airport technology means that far fewer air passengers (both in PreCheck and non-PreCheck lines) will have to take their liquids out out of their carry-on, it’s still helpful to have all of your liquids in one bag just in case you get pulled aside for additional screening. For an upgrade from that large Ziplock, we recommend the standard-sized Clarity Jetset Case from Truffle ($88), which has a clear window panel and is comparable in size to a quart-sized bag.

Since toothpaste is considered a liquid, paste, or gel by the TSA, most of us toss those tiny one-ounce tubes in our carry-on bags. However, if you want to ditch the hard-to-recycle packaging, consider toothpaste tablets, an ecofriendly alternative that’s not subject to the 3-1-1 rule. We like Humankind’s fluoride toothpaste tablets ($12), which resemble small mints and turn to paste when you crush them between your teeth. Matador has also recently released a reusable toothpaste tube ($10), which you can fill (and refill) with your regular toothpaste.

For travel toiletries that are easy to rebottle (like shampoo or body wash), consider investing in reusable bottles or containers so you can always keep your preferred brand on hand. Some of our favorite TSA-approved toiletry bottles include:

Buy Now: GoToob three-pack of 3.4-ounce bottles, $30, rei.com

These easy-to-fill, leakproof silicone tubes are ideal for shampoos, conditioners, lotions, and body washes. GoToob’s line comes in a variety of sizes, ranging from 1.7 to 6 ounces, and are easy to clean between refills.

Matador FlatPack

Buy Now: $13 for one or $35 for three, matadorup.com

Each three-ounce, TSA-approved bottle is made from a durable, waterproof, nylon-based fabric. Like GoToob, they’re leakproof and easy to fill, but thanks to their flexible, fabric-like design, they will shrink to their contents, taking up less space in your pack. >> Read the full review of the Matador FlatPack

Buy Now: $14 for one or $74 for six, keepyourcadence.com

The refillable travel containers by Cadence are small, leakproof “capsules” that click together with magnets. At 0.56 ounces, they’re best for makeup and toiletries you don’t need much of—like a weekend’s worth of shampoo or a week of that under eye cream you only need a dab of.

Foods are subject to liquid limits

The TSA’s 3-1-1 rule applies to food too, meaning you’ll need to make sure any foods that count as liquids, gels, or pastes (like yogurt, peanut butter, pâté, jams, or that tasty pimento cheese spread you tried to bring home from Charleston) are less than 3.4 ounces or packed in your checked bag. There are some exceptions, like frozen foods and juice for babies, and the TSA’s website is the best resource to check for specific items.

Exceptions to TSA’s liquids rule: Full-sized liquids that you can bring through security

The TSA has several important exemptions to its liquids rule. You’re allowed to bring full-sized bottles of the following:

Hand sanitizer: Due to the coronavirus pandemic, the TSA currently allows travelers to bring up to 12 ounces of hand sanitizer in their carry-on bags. These will be screened separately.

Medication: You’re allowed to bring medically necessary liquids, aerosols, and gels through security. This also includes the ice or gel packs you may need to keep your medications cool. You are not required to store these items in a plastic, resealable bag, but you should remove them from your luggage and let the TSA officer know what you’ve packed.

Baby formula and breast milk: Like medication, you can bring freezer packs to keep these items cool, and you should remove them from your luggage and notify an agent when you go through security. More baby-related exceptions? Gel or liquid-filled teethers and canned or jarred baby food.

Of course, the final decision on whether an item is allowed through the checkpoint rests with the TSA officer.

If you’re ever unsure about a specific item, the TSA’s website has a handy, searchable list of prohibited and allowed items worth checking before you travel. You can also now text the TSA with your questions.

This article was originally published in 2022. It has been most recently updated on March 21, 2023, with additional information.

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travel size liquid requirements

TSA Liquid Rules Ultimate Guide (3-1-1 Explained) [2023]

Bringing your liquids through airport security is not always as straightforward as you might think.

There are several rules that apply when bringing your liquids through airport security checkpoints and, yes, many are obvious to those of us blessed with a shred of common sense.

But in some cases there are some less obvious restrictions that could apply to your liquids.

And when you start talking about things like baby essentials, medications, and liquids like alcohol, there are many lesser-known rules and exceptions that come into play.

Violating these rules can sometimes mean slowing down the flow of the screening checkpoint (something we all should want to avoid) but in other cases it could mean violating the law and you basically becoming an airport criminal.

And nobody wants that.

So it’s a good idea to get acquainted with how these rules work and in this article, I’ll give you a detailed breakdown of the 3-1-1 rule and also talk about the many different types of exceptions and additional rules that apply to different types of liquids such as medications and alcohol.

Table of Contents

What is the TSA Liquids “3-1-1 Rule?”

The TSA Liquids 3-1-1 Rule states that you can only bring liquids in containers no larger than 3.4 liquid ounces (100 milliliters) and that all of your liquid containers must fit “comfortably” into one clear, quart-size bag.

Where does the 3-1-1 come from?

It’s just an easy way to memorize the different requirements that make up the rule and I’ll hit on those below.

3.4 fluid ounces or (100 mL)

The “three” indicates that your liquids must be contained within a container no larger than 3.4 fluid ounces or (100 ml).

(TSA uses 3.4 ounces because it’s easier to remember but really  100 ml comes out to 3.3814 fluid ounces. )

One of the biggest things that people get confused about is that the 3.4 ounce requirement applies to the size of the container and not the liquid within the container.

So let’s say that you have a 6 ounce container with only 2 ounces of fluid inside.

You may think that because you have under 3.4 fluid ounces of liquid, you are good to go but because your container is larger than 3.4 ounces, you cannot bring that through TSA.

The other big thing to know is that this refers to fluid ounces which relates to volume and is very different from ounces used for weight.

Some products like honey could weigh 4 ounces but still fit inside of a 3.4 fluid ounce container. It helps to know how to convert ounces/grams to fluid ounces .

Tip: Use the free app WalletFlo to help you travel the world for free by finding the best travel credit cards and promotions!

travel size liquid requirements

1 quart-sized resealable bag

The first “one” means that your liquids must fit within 1 quart-sized resealable bag. Typically, this will be a clear Ziploc bag which just makes things easy for everybody.

The key thing to note here is that the containers must fit “comfortably” inside this resealable bag.

What does “comfortably” mean?

It basically just means that the bag is not bursting at the seams. (Think about how a pair of jeans should fit when you’re being honest with yourself about your waist size.)

If you are not able to easily reseal your bag, then your contents may not be fitting comfortably inside.

In such a scenario, it’s possible that a TSA agent could ask you to throw something out in order to allow your bag to comply with the rules.

In my personal experience, I have not seen a lot of TSA agents enforce the “comfortable” requirement very strictly but if you have bottles poking out of your liquids bag, I could see that being an issue.

travel size liquid requirements

1 quart size bag per person

The last requirement is that you are allowed 1 quart size bag per person.

The easiest way to comply with this is to simply separate your liquids bag from your carry-on and have one liquids bag in your bin when going through security.

Otherwise, it could look like you are trying to bring through two bags of liquids.

The best packing tip I have for this is to keep your liquids bag at the top of your carry-on so that you can easily retrieve it.

There’s nothing worse than scrambling to find that liquids bag while trying to get ready to go through a screening checkpoint.

travel size liquid requirements

TSA Pre-Check liquids rule

TSA Pre-Check allows you to bypass the main security line and pass through a screening line that is usually much shorter and quicker. This also means avoiding the full body scanner in many cases. It basically makes you a VIP when it comes to airport security checkpoints.

If you have TSA Pre-Check , you can take advantage of several benefits including things like:

  • Shoes can stay on
  • Belt can stay on
  • Light jackets can stay on
  • Laptops allowed to stay in bag
  • Liquids (3-1-1) can stay in bag

That last perk is the most relevant to the liquids rule as you will not have to remove your liquids bag and place them in one of the bins when going through security. You can simply leave them in your carry-on and pass through the metal detector without any issue.

I highly recommend that you look into getting Pre-Check in order to expedite your security screening. It will only cost $78 for five years and all you have to do is pass a background check. You can also get it if you are approved for Global Entry ( read how to get approved here ).

travel size liquid requirements

New hand sanitizer liquids rule

Due to the ongoing threat of coronavirus and the potential threat of spreading germs throughout airports and aircraft, TSA recently implemented a change with respect to hand sanitizer.

Passengers will now be allowed to bring one hand sanitizer bottle up to 12 ounces. These larger bottles will be screened separately so just be aware that it could add some extra time.

What exactly is a “liquid?”

In some cases, what constitutes a liquid will be very clear.

For example, it’s pretty much common sense that water inside of a water bottle is a liquid. The same applies for cologne, mouthwash, etc.

But liquids also can include less-obvious forms like aerosols, gels, creams, or pastes.

This means that several common items you would be bringing along for your trip could be considered a liquid like: toothpaste , lotion , sunscreen, shaving cream, shampoo , conditioner, and others.

You can find travel-sized products for most of these so it’s usually pretty easy to bring along items that comply with the TSA liquids rule.

Other items

You need to be mindful of other items that could be considered liquids like deodorant . For example, the following types of deodorants will be subject to the 3-1-1 rule:

  • and Roll-On deodorants

Prohibited items

Just because you have something like an aerosol and it is in a container no larger than 3.4 ounces, that does not mean that you can bring it as a carry-on.

There are quite a few prohibited items like aerosol insecticide, bear spray, etc. that are not allowed as carry-ons. In fact, some of those items may not even be allowed on the plane at all. This is a good place to search if you are in doubt about whether or not you can bring a particular item.

Be aware that some items like hairspray may even have size restrictions when packed in your checked baggage.

Picture of shaving cream going into hand

Foods can also be liquids

One aspect of the TSA liquids rule that throws a lot of people off is that they forget many foods also qualify as liquids.

Here is a non-exhaustive list of food items that will fall under the liquids rule:

  • Liquid chocolate
  • Creamy dips and spreads
  • Mashed fruits such as applesauce
  • Jam and jelly
  • Maple syrup
  • Oils and vinegars
  • Peanut butter
  • Wet pet food
  • Salad dressing
  • Salsa and sauces

Basically anything that is usually poured, scooped, squeezed, slurped, or mashed will be considered a liquid for TSA purposes.

If your food is solid on the other hand , chances are you can bring it through.

Picture of a bowl of hummus

TSA rules for liquid medications

The liquids rule provides exceptions for medical supplies and medications .

TSA allows larger amounts of medically necessary liquids, gels, and aerosols in “reasonable quantities” than your 3-1-1 allowance.

You do not have to have a prescription for these items but keep in mind that you need to comply with state laws regarding prescriptions and controlled substances.

This leaves two questions often to be asked and answered.

The first is what is considered “medically necessary?”

For example, is contact lens solution medically necessary?

It seems the answer to that is probably yes given the TSA states, they allow “larger amounts of medically necessary liquids, gels, and aerosols in reasonable quantities for your trip” on the page regarding contact lenses.

So if in doubt check the website and then inquire with AskTSA if you still don’t know.

The second question is what is considered a “reasonable quantity?”

What is deemed as a reasonable quantity is a subjective determination.

According to the TSA, you should bring what’s necessary for the duration of your trip (e.g., seven days) plus a day or two just in case things get delayed or canceled.

If you stick to what you think will be necessary for the duration of your trip, I don’t think you will often run into trouble. But if you’re bringing a six month supply of medication on a four day getaway, that’s when you might start to run into trouble if questioned.

TSA states that you must declare them to TSA officers at the checkpoint for inspection.

You also want to remove these from your carry-on so that they can be screened separately from your belongings. (You do not have to put your liquid medication in a plastic Ziploc bag.)

Just be aware that if one of your liquid items declared as medically necessary sets off the alarm, it may require additional screening and may not be allowed.

travel size liquid requirements

Baby essentials

You are allowed to bring formula, breastmilk, and juice for infants or toddlers in “reasonable quantities” through airport security. According to the TSA, reasonable quantities for baby essentials typically means the duration of the flight.

When bringing these items through security, be sure to separate these from your carry-on bag so that they can be screened separately from the rest of your items.

If you are carrying liquids in excess of 3.4 ounces, you are advised to inform the TSA officer at the beginning of the screening process that you have excess liquids. You can do this when you are unloading your items into the bin.

In many cases, excess liquids will be screened by x-ray.

It’s also possible that an officer may ask you to open up the container and potentially even transfer a small quantity of the liquid for testing.

If you are worried about the effects of an x-ray machine on your liquids, The Food and Drug Administration states that there are no known adverse effects from eating food, drinking beverages and using medicine screened by X-ray.

If that is not good enough assurance for you, you can ask to avoid the x-ray machine.

Additional steps may be able to be taken to clear the liquid but the traveler will likely have to undergo additional screening procedures which could include a pat down and a thorough screening of all of your carry-on property.

You will also be allowed to bring along ice packs, freezer packs, frozen gel packs and other accessories required to cool formula, breast milk and juice.

If these are in a partially frozen state or perhaps appear like a slushy they will be subject to the same screening as described above.

Other permitted baby items include gel or liquid-filled teethers, canned, jarred and processed baby food.

Just always be aware that these items may have to undergo additional screening.

TSA liquid rules for alcohol

Bringing alcohol through TSA presents a number of different challenges.

First, your alcohol in most cases will have to comply with the liquids 3-1-1 rule. This means that you won’t be able to bring in regular bottles of liquor or beer.

It is possible to find small bottles that are under 3.4 ounces (mini-liquor bottles are often around 1.7 ounces, so this means that they are small enough to be brought on the plane as a liquid).

But contrary to what many people think, it’s also permitted to bring your own alcohol in one of your own containers.

The catch is that there are specific restrictions about what type of alcohol is allowed on board and that can be allowed as a carry-on. You really need to make sure that you are abiding by these rules because you could be violating federal law otherwise.

The first regulation to know is that alcohol beverages with an alcoholic percentage above 70% (140 proof) is never allowed on the plane . In fact, alcohol with such a high alcohol percentage is considered a hazardous material.

If the alcohol content is above 24% but not above 70% then the alcoholic beverage must be in its retail packaging. A lot of popular alcoholic beverages for within this range. Here are some  ranges  for the alcoholic content of some common beverages:

Alcohol Percentage Content

  • Vodka | ABV: 40-95%
  • Gin | ABV: 36-50%
  • Rum | ABV: 36-50%
  • Whiskey | ABV: 36-50%
  • Tequila | ABV: 50-51%
  • Liqueurs | ABV: 15%
  • Fortified Wine | ABV: 16-24%
  • Unfortified Wine | ABV: 14-16%
  • Beer | ABV: 4-8%
  • Malt Beverage | ABV: 15%

And finally, one of the most important things to remember is that you are not allowed to serve yourself your own alcohol when flying.

Instead, you must request a flight attendant to serve you the alcohol or else you will be violating FAA regulations. Some flight attendants will happily serve you your own beverage but others will not be so inclined.

If you purchased alcohol at duty free store, different rules apply in that scenario. Basically, you can bring your duty free alcohol through TSA security but you have to comply with three separate requirements:

  • The duty free liquids were purchased internationally and you are traveling to the United States with a connecting flight.
  • The liquids are packed in a transparent, secure, tamper-evident bag by the retailer and do not show signs of tampering when presented to TSA for screening.
  • The original receipt for the liquids is present and the purchase was made within 48 hours.

Read more about this rule  here .

bottles of mini alcohol

Checked baggage liquid rules

Many times, you can simply place your liquids in your checked baggage and not have to worry about that pesky 3-1-1 rule.

This is usually the way to go on longer trips when you might be bringing large quantities of things like shampoo or shaving cream.

But as mentioned above, you still need to make sure that the type of liquid is allowed on a plane. Certain materials may be considered hazardous and you could be violating the law by bringing those on board.

If you are loading up your checked baggage with a bunch of liquids, make sure that you double bag if there is potential for the liquids to spill!

TSA Liquid Rules FAQ

The TSA 3-1-1 rule does not apply to checked baggage. However, there are some restrictions on what liquids can be transported in your checked baggage. There may also be limitations on the quantity of liquids when it comes to importing large quantities of things like alcohol. At some point, you might have to obtain a license for certain goods.

TSA definitely enforces the liquids rule and I would recommend not trying to circumvent the rule. It’s possible that an agent may be more lenient than another in certain circumstances but I would always assume that an agent will be enforcing strictly so that I don’t run into any unexpected issues.

TSA has the rules in order to detect potential explosives and other harmful materials that exist in liquid state.

The same liquid rules apply for both domestic flights and international flights. One difference that you might encounter is when you purchase duty free goods before an international flight. See the duty-free section above for more details. Also, when flying internationally it is recommended that you get to the airport extra early. It is possible that you could get hit with SSSS and be forced to undergo a heightened security screening, so always plan out extra time.

While you might view your makeup as special, there are no special rules for your makeup when it comes to TSA. They must abide by the same 3-1-1 rule explained above. Read more about makeup rules here.

No, you do not have to take out your liquids if you have TSA Pre-Check.

The same TSA liquids rule will apply to all airlines. So if you’re flying American or Delta, the rules will be the same as if you were flying Southwest or United. With that said, some airlines do have some differences in how they handle acceptable baggage so you should make sure to read up on the latest baggage policies for the airlines.

If you are traveling from an “international last-point-of-departure” to the U.S ., powder-based substances in carry-on baggage greater than 350mL or 12 oz. may require additional screening. If your substance is over 12 ounces and cannot be cleared it will not be allowed onto the aircraft cabin. TSA recommends that you transport powders in your checked baggage.

TSA has several rules you need to follow when it comes to drinking liquids through airport security. The most well-known is the 3-1-1 rule but there are other considerations you need to think about like foods that might trigger the rule and exceptions for medical and baby essentials. In the end, try to be as reasonable as possible with what you are bringing through and you will run into few problems.

tsa liquids rule 3-1-1 infographic

Daniel Gillaspia is the Founder of UponArriving.com and the credit card app, WalletFlo . He is a former attorney turned travel expert covering destinations along with TSA, airline, and hotel policies. Since 2014, his content has been featured in publications such as National Geographic, Smithsonian Magazine, and CNBC. Read my bio .

I will be traveling from Mexico April 25th. Will I be able to bring back a bottle of Tequila in my check in luggage probably wrapped safely? Thanks, Regina Green

The above is good detail but how about: electric shaver and charger electric toothbrush

Yes and yes!

Check these out:

https://www.uponarriving.com/tsa-rules-razors/ https://www.uponarriving.com/tsa-toothpaste/

I will be leaving Chicago going to Manila via Istanbul on 21 July 2022, Turkish Airways. I will be bringing 4 bottles of Scotch whiskey in original container, unopened and sealed and properly packed with bubble wrap. Is this allowed?

How do I know which states allow medication‘s to be in a travel organizer, and not in their original bottles? I am flying from Philadelphia with a layover in Ireland, and finally to Paris on Aer Lingus.

Hand sanitizer rules have reverted back to the 3-1-1 guidelines.

Thanks for this update. Do you have a source on that? Couldn’t find updated info.

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Everything You Need to Know About TSA Liquid Rules

Here's what to know before you fly with shampoo, medication, or any other liquids you may need during your travels.

travel size liquid requirements

Dealing with airport security can be one of the more daunting aspects of air travel , from the detailed rules about what you can and can't bring on board to the long lines that often form at checkpoints.

One rule that frequently trips up travelers is the Transportation Security Administration's (TSA) 3-1-1 regarding liquids in carry-on bags . We're here to walk you through the finer details of the rule and provide helpful tips for packing liquids when you're flying.

What is the TSA's 3-1-1 rule?

In 2006, British security officials thwarted a plot to bomb an aircraft with liquid explosives carried on board. Since then, security agencies around the world have limited the amount of liquid passengers can bring through airport security.

For the TSA, which regulates travel in the United States, all liquids, gels, and aerosols must be in containers that are 3.4 ounces (100 milliliters) or less. All liquids must fit into a single, clear quart-size bag — passengers can only pack one of these bags in their carry-on.

The 3-1-1 designation is a simple way to remember these numbers: individual liquid containers must be 3.4 ounces or smaller, they must fit into one clear, quart-size bag, and there is only one bag allowed per passenger.

Liquids that do not comply with the 3-1-1 rule must be packed in checked bags, or thrown out at airport security. Some liquids, such as gasoline or other flammable liquids, are prohibited entirely, both in checked and carry-on bags. You can find a full list of permitted and prohibited items on the TSA's website .

If you're unsure if a specific item adheres to the 3-1-1 rule, you can always contact the TSA before your trip. "Tweet your questions and comments to @AskTSA or via Facebook Messenger , weekdays from 8 a.m. to 6 p.m. ET," TSA spokesperson Jessica Mayle tells Travel + Leisure . "You can also call the TSA Contact Center at 866-289-9673."

Are there any exceptions to the 3-1-1 rule?

The TSA does exempt some items from the 3-1-1 rule: medically necessary liquids, formula, and breast milk. You can bring more than 3.4 ounces of these liquids on board, but you may have to undergo additional security screening.

"Inform the TSA officer at the beginning of the screening process that you're carrying them," says Mayle. "These liquids are typically screened by X-ray, but TSA officers may also test them separately for explosives or concealed prohibited items. Officers may ask you to open the container and/or have you transfer a small quantity of the liquid to a separate empty container, or dispose of a small quantity, if feasible."

If you don't want your exempt liquids to be screened by X-ray, inform your TSA officer, and they will use alternative security measures to clear the items.

And that's not all. "There's an exception for hand sanitizer, which has a temporary 12-ounce limit," says Mayle. But as COVID-19 travel restrictions and protocols continue to lift, the temporary special case for hand sanitizer could change, too.

Another exception is liquids purchased after security in an airport. In domestic U.S. airports , you can bring nonalcoholic drinks and other liquid items purchased airside onto your flight. (This is not always the case in international airports.) Duty-free liquids, however, will be sealed in a tamper-safe bag before boarding — sometimes they're permitted in the cabin, and other times they may be stowed elsewhere on the plane.

Packing Tips for Liquids in Carry-on Bags

  • While many products are sold in 3.4-ounce containers suitable for travel, not all of them are. Consider rebottling your liquids into travel-size, leak-proof cases.
  • "Another way to save space in your quart-sized bag is to pack solid versions of products, which you can put in your luggage or carry-on bag without needing to place it in the quart-size bag," travel advisor Ateet Ahuja of Complete Getaways tells T+ L. "For example, you can bring a stick or solid version of some perfumes and shampoo bars instead of liquid shampoo."
  • Buy your liquids, like shampoo or mouthwash, at your final destination. "While you'll spend a little extra, the cost far outweighs the potential of it spilling or leaking in your bag," says Ahuja.
  • On that note, prepare for spills — Ahuja advises wrapping a small hand towel around your quart-size bag.
  • Pack your nonliquid toiletries separately to save space in your quart-sized bag.
  • Pack your liquids bag in an easy-to-access space, like an external compartment or the top of your carry-on bag. According to Ahuja, "This will save you time in the TSA line."
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TSA Liquid Rule for Carry-on Bags (100 ml or 3.4 oz)

The TSA Liquids Rule for Carry-on Bags (3.4 ounces)

Understand these rules so you don’t get held up on the TSA security line!

TSA 3-1-1 Rule

Exceptions to the tsa liquids rule, tsa liquids rule for precheck, does tsa consider makeup a liquid, converting 3.4 oz to ml – how many ml is 3.4 ounces, what does 3.4 oz (100 ml) look like, converting 100 ml to oz – how many oz are in 100 ml, 100 ml to cups, 100ml bottle size – how big is a 100ml bottle, wrapping up: tsa liquids policy, more carry-on content:.

Before you finish packing to head to the airport, always double-check your carry-on bags and make sure you don’t have any bottles or other items that don’t comply with the TSA liquids rule, (known as the 3-1-1 rule).   

By the time the TSA finds that expensive bottle of perfume or lotion in your bag, it’s too late and you’ll have to say goodbye and hand it over to get through security and board your plane on time.  It’s happened to my family many times and could easily have been avoided with a quick check before leaving.

To help make sure this doesn’t happen to you, we’ve created this article that will tell you everything you need to know about the TSA liquids rule, including how much liquid is 100 ml, what are travel-sized bottles, what is considered a liquid, etc. Basically, all the stuff that could get confiscated when making your way through airport security.

What’s the TSA Liquids Rule?

The TSA liquids rule states that you can bring a quart-sized bag of liquids, aerosols, creams, gels, and pastes in your carry-on bag and through the airport security checkpoint. However, you are limited to containers that are travel sized and contain less than 3.4 ounces (100 milliliters) per item.

TSA Liquids 3.4 oz or 100 ml

Items that are in packages or bottles larger than 100 milliliters (or 3.4 ounces) will have to go in your checked luggage .  In addition to larger liquids, any liquid that is more than 3.4 oz or 100 ml and is not contained in a secure, tamper-proof bag must be packed in your checked luggage.

Each liquid must be in a 3.4-ounce or less container (“3”), all containers must be placed inside one clear quart-sized plastic bag (“1”), and each passenger is only allowed one plastic bag (“1”).

TSA 3-1-1 Rule

There are 2 exceptions to the TSA 3-1-1 Liquids Rule

  • Medications, and
  • Infant/Child nourishment

Medications larger than 100ml

TSA allows larger-sized packages of medical liquids, gels, and aerosols in your carry-on. This also includes medical accessories such as freezer bags, pumps, syringes, etc. These items do not have to be in a plastic zip lock bag, but you will have to declare these items to TSA officers at the checkpoint prior to inspection.

Here’s a video that provides all the details you need about traveling with medication.

Formula, Breast Milk, and Juice

Formula, breast milk, and juice for infants and toddlers are allowed through the security checkpoint. These can be in quantities greater than 3.4 ounces or 100 milliliters and are allowed in carry-on baggage.

Similar to medications, just inform the TSA officer of what you have and remove the items from your carry-on bag so they can be screened separately from the rest of your belongings.

Ice packs, freezer bags, frozen gel packs, and other accessories required to cool formula and breast milk are allowed in your carry-on bag.

The TSA PreCheck Program allows registered travelers the ability to go through expedited screening lines at over 200 participating U.S. airports with over 80 participating airlines. Once you are approved in the program you don’t need to remove your 3-1-1 liquids from your bag.

TSA Pre-check liquids rule 100 ml

Actually, you can avoid removing any of the following items during the screening process:

  • 3-1-1 compliant bag
  • Light jacket/Sport coat/outerwear
  • Laptop / iPad from bag

To apply for PreCheck, go to tsa.gov/precheck . From here you can enroll and make an appointment online or walk in at any one of over 380 enrollment centers . It can take up to 30 days to obtain a TSA PreCheck known traveler number.

What does TSA consider a liquid?

According to TSA guidelines, any substance that is free-flowing or viscous is considered a liquid. This includes liquids, aerosols, pastes, creams, and gels.

According to the TSA, “Makeup in a solid or powder form is allowed in carry-on and checked bags with no quantity or size limitations. However, when packed in carry-on bags, makeup in a liquid, lotion, gel, paste, or creamy form, must be in containers that are 3.4 ounces or less. You can take as many travel-sized liquids as you can comfortably fit into one quart-sized, zip-top bag.”

When it comes to makeup, the following are some examples of liquid cosmetics:

  • Nail polish,
  • Moisturizers,
  • Foundation,
  • Mascara, etc.

How much is 3.4 oz?

Now that you understand the basic concepts of the TSA liquid rule, it may help to have an idea of what constitutes 3.4 oz or 100 ml, since most people don’t naturally know how big a 3.4-ounce container or a 100 ml bottle is.

So if you’re wondering exactly how much is 3.4 oz or how big is a 100 ml bottle, we will walk through that for you here.

3.4 ounces (oz) converts to 96.388 milliliters (ml). For purposes of simplicity, the TSA rounds this up to 100 ml

travel size toiletries less than 100 ml or 3.4 oz

Most of the toiletries you would bring on a trip come in travel-sized packages that can be bought at any drug store or grocery store. These travel-sized items are typically 3 ounces (90 ml) and generally provide enough lotion, shampoo, or toothpaste for a 5-day trip. If you’ll be traveling longer, you may need to stock up on a couple of extra bottles or plan on purchasing more upon arrival at your destination.

100 milliliters (ml) converts to 3.3814 ounces (oz). For purposes of simplicity, the TSA rounds this up to 100 ml

100 milliliters (ml) converts to .422675 cups, so it’s just under 1/2 cup.

how many cups are in 100 ml?

A 100 ml bottle is fairly small. To give you a visual, look at the image below that shows a 500 ml water bottle vs. a 100 ml spray bottle. The 100 ml bottle is about 3 inches tall and the water bottle is about 8 inches tall.

how big is 100 ml bottle

Hopefully, this guide will give you a better idea of what the TSA considers a liquid and what size they will let you bring on your carry-on. Knowing this information in advance can save a lot of headaches at the airport!

  • Spirit Airlines Carry-On Liquid Policy

travel size liquid requirements

Tim is a business road warrior and avid leisure traveler who has flown over two million miles in the air and spent well over a thousand nights in hotels. He enjoys sharing tips, tricks, and hacks to help readers get the most out of their travel experience and learn how to “travel like a pro”!

HawaiianMiles Program Review: In-Depth Guide to Hawaiian Airlines Loyalty Program

Liquids Allowed in Carry-On Luggage

travel size liquid requirements

Joe Raedle  /  Staff  / Getty Images

If you're taking a flight for your vacation, you need to know the quantities and types of liquids that the Transportation Safety Administration (TSA) allows passengers to bring onto an airplane in their carry-on luggage .

While good security is essential, TSA's regulations on liquid quantities certainly make it harder to take some necessary items on planes. Today’s travelers have to pay attention to exactly what they’re carrying, especially when it comes to shampoos, shaving cream, drinks, and anything resembling a fluid, as many of the TSA's rules forbid these items in certain quantities.

The TSA and airport screeners are strict about the amount and type of liquids that travelers can take with them on the plane. However, they've fortunately developed a handy guide to help passengers prepare for their trip. Known as the 3-1-1 rule for carry-on liquids, this rule states that most liquids, gels, and aerosols can be transported as long as each item is in a 3.4-ounce or smaller container and all items fit in a single one-quart plastic zip-top bag.

The 3-1-1 Rule

According to the 3-1-1 guidelines, travelers, in general, are allowed to bring on most liquids, from shampoo to hand sanitizer gels, as long as they meet the requirements of the 3-1-1 rule. Typically this means you can carry up to six 3.4-ounce bottles of shampoos, contact solution, and other liquid necessities as long as they are all contained within a zip-top bag.

You can also put liquids in your checked luggage (as long as they’re not prohibited items). However, if you do this, you should make sure the liquids are sealed really well so that they don't come up while being transported beneath the aircraft. The last thing you need on a business trip is to have your shampoos or other liquids leak all over your business suit or wardrobe. Fortunately, there are plenty of great TSA-approved travel toiletry bottles available to choose from.

Special Liquids and Larger Quantities

Travelers can also declare larger containers of selected liquids, such as baby formula or medications , at the checkpoint. Airport screeners will generally allow them in moderate quantities, and declared liquids don’t have to be in zip-top bags.

Medications, baby formula and food , and breast milk are allowed in reasonable quantities exceeding three ounces, but you'll need to declare these items for inspection at the checkpoint. Also, it's worth noting that TSA screeners do allow you to bring ice through the security checkpoint as long as it's frozen solid. So if you bring ice, make sure to dump out any water before you hit the security checkpoint.

Examples of liquids that can be in excess of the 3.4-ounce rule include:

  • Baby formula, breast milk, and juice (for babies)
  • Both prescription and over-the-counter medications
  • Liquids or liquid nutrition for people with disabilities or medical conditions
  • Specialized medical liquids like contact solution
  • Frozen items, if they’re frozen solid
  • Medical or cosmetic items with liquid or saline

If you’re attempting to bring one of the above items with you, the TSA requires you to separate them, declare them to a security officer, and present them for additional screening. For complete information on the 3-1-1 rule, visit the TSA website, and for a complete list of prohibited items, visit the official TSA prohibited items list.

Why the TSA Limits Liquids

While it may seem like an arbitrary rule to some, the TSA 3-1-1 Rule actually took a considerable amount of negotiation and research to implement and was developed in response to an attempted attack on an airport in the United Kingdom.

On August 10, 2006, authorities in the United Kingdom arrested a group that was planning to destroy a number of airplanes by using an explosive mixture of a sports drink and other chemicals. After the arrest, the TSA rigorously tested a wide variety of liquids to determine which should be banned outright and what quantity of common household liquids was safe for passengers to bring aboard.

The United States adopted the 3-1-1 Rule in September of 2006, and the TSA screens all arriving international flights to make sure passengers comply with domestic regulations. Other countries have since adopted the same or similar regulations in order to ensure uniform administration of safety rules around the world. Canada, China, South Korea, New Zealand, Australia, and all member states of the European Union follow the 3-1-1 Rule.

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Airline and TSA Carry-On Restrictions

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Table of Contents

Airline-specific carry-on luggage rules

Tsa liquid limits, how many ounces are allowed on a plane, additional tsa carry-on rules, final thoughts on tsa rules for carry-ons.

Whether you’re purposefully packing light or supplementing your checked luggage, it’s important to keep Transportation Security Administration (TSA) carry-on luggage size in mind when packing a bag and heading to the airport.

After all, not all airlines allow full-size carry-ons for free, and most have slightly different rules on carry-on bag size. Don’t get caught unaware at the gate; hefty baggage fees and inconvenience may await.

» Learn more: Want TSA Precheck for free?

Here’s what you need to know about airline and TSA carry-on size allowances.

Airline carry-on dimensions differ depending on the carrier. When purchasing your flight, you’ll be able to see your carry-on and personal item limits.

A personal item is typically a small backpack, purse, briefcase, diaper bag, camera bag or any item of a similar size that can fit underneath the seat in front of you. A carry-on bag could be anything from a large backpack to a small rolling suitcase. But it’s less shape than size that matters, so here are carry-on luggage size restrictions for each of the major domestic airlines:

Alaska Airlines

On an Alaska Airlines flight, you can bring a carry-on and a personal item for free.

Carry-on bags are limited to 22 inches long, 14 inches wide and 9 inches high including wheels and handles. All three measurements shouldn’t add up to more than 45 inches.

For personal items, Alaska offers examples of a purse, laptop or briefcase.

Alaska doesn't list weight limits, but it says that passengers should be able to lift items that go in an overhead bin.

» Learn more: Guide to Alaska Airlines baggage and other fees

American Airlines

For an American Airlines flight, passengers get one personal item and one carry-on, no matter what type of fare is bought (elite members included).

Carry-on bags shouldn’t be larger than 22 inches long, 14 inches wide and 9 inches high including handles and wheels.

Dimensions of personal items should not exceed 18 inches long, 14 inches wide and 8 inches high.

There are no weight restrictions for carry-on luggage.

» Learn more: American Airlines bag fees: How they work, how to avoid them

Delta Air Lines

Delta flyers are allowed one carry-on bag and one personal item.

Including wheels and handles, measurements may not exceed 22 inches long, 14 inches width and 9 inches high. The total length plus width plus height of baggage must not exceed 45 linear inches.

For personal items, Delta says size examples are purses, small backpacks and laptops.

Three places have weight limits: Singapore (7 kg, about 15.4 pounds), Beijing (10 kg, about 22 pounds) and Shanghai (10 kg, about 22 pounds).

» Learn more: Delta Air Lines baggage fees: How they work, how to avoid them

Frontier charges for both checked luggage and carry-on bags, and the price depends on the route you fly. It also varies depending on if you buy the bags before via the web or mobile app, at the ticket desk, or the boarding gate.

Carry-on bags must weigh less than 35 pounds and must not exceed 10 inches deep, 16 inches wide and 24 inches high. Bags must fit in the overhead bins.

Checked bags must be no longer than 62 linear inches (length + width + depth) and must weigh under 40 pounds. Bags weighing more than 40 pounds will incur additional charges per bag per direction. Bags weighing 41-50 pounds will cost you $50 more and bags weighing 51-100 pounds will cost $100 more.

Personal items cannot exceed 8 inches deep, 18 inches wide and 14 inches high.

» Learn more: Frontier baggage fees: How they work

Not all JetBlue passengers are allowed the same carry-on items. Passengers who bought Basic Blue fares get one personal item (except Mosaic customers who always get a carry-on). Blue, Extra Blue, Blue Plus and Mint fares allow one carry-on and one personal item.

Including wheels and handles, length, width and height measurements may not exceed 22 inches long, 14 inches wide and 9 inches high.

Personal items can be no more than 17 inches long, 13 inches wide and 9 inches high or smaller to fit under the seat in front of you.

There are no weight limits for carry-on luggage on JetBlue.

» Learn more: Guide to JetBlue baggage, cancellation and other fees

Southwest Airlines

Southwest is known for having a generous free checked luggage allowance, but carry-on restrictions are similar to most other airlines — one personal item and one carry-on per traveler.

Carry-on measurements should not exceed 24 inches long, 16 inches wide and 10 inches high.

Personal items are limited to 18.5 inches long, 8.5 inches wide and 13.5 inches high.

Southwest doesn't list weight limits for carry-on items.

» Learn more: The guide to Southwest baggage and other fees

United Airlines

Most travelers flying with United can bring one carry-on and one personal item, but if you’re traveling on a basic economy fare, you’re allowed one personal item only (unless you’re a MileagePlus Premier Member, are traveling internationally or have a MileagePlus credit card, like the United℠ Business Card ).

Including handles and wheels, the maximum dimensions for a carry-on are 22 inches long, 14 inches wide and 9 inches high.

Personal items are limited to 17 inches long, 10 inches wide and 9 inches high.

United doesn't publish weight limits for carry-ons.

» Learn more: What you need to know about United Airlines baggage and other fees

Depending on the airline you fly with as well as how long you’re traveling for, you might wonder whether you’re better off traveling with a checked bag rather than a carry-on . This can be especially relevant if you’ve got some liquids with you that exceed the TSA carry-on liquid limits.

WANT TSA PRECHECK FOR FREE?

A number of popular travel credit cards reimburse you for the application fee for trusted traveler programs like TSA PreCheck and Global Entry. Among them:

Bank of America® Premium Rewards® Credit Card

on Bank of America's website

Chase United Airlines Mileage Plus Credit Card

on Chase's website

Chase Sapphire Reserve Credit Card

$0 intro for the first year, then $95

Statement credit of up to $100 as reimbursement when you charge the application fee for TSA PreCheck or Global Entry to the card. Available once every 4 years.

Statement credit of up to $100 as reimbursement when you charge the application fee for TSA PreCheck, Global Entry or NEXUS to the card. Available once every 4 years.

If your credit card offers reimbursement for the application fee for programs like TSA PreCheck or Global Entry, you must pay the fee with the card. You cannot submit a claim for reimbursement if you paid with some other method. Reimbursement will usually appear as a statement credit in your account within two months.

Cards typically offer reimbursement of only one fee once every four to five years. Check the terms and conditions of your card for the specific rules that apply. Note also that these cards only reimburse the application fee for a trusted traveler program. They don't automatically enroll you in the program or guarantee that you'll be accepted by the program. You still have to apply and go through the required screening, which in the case of TSA PreCheck and Global Entry includes an in-person appointment.

Aeroplan® Credit Card .

Bank of America® Premium Rewards® credit card

Capital One Venture X Rewards Credit Card .

Chase Sapphire Reserve® .

Citi® / AAdvantage® Executive World Elite Mastercard® .

Delta SkyMiles® Platinum American Express Card .

Delta SkyMiles® Reserve American Express Card .

IHG One Rewards Premier Business Credit Card .

IHG One Rewards Premier Credit Card .

Marriott Bonvoy Brilliant® American Express® Card .

The Platinum Card® from American Express .

Southwest® Rapid Rewards® Performance Business Credit Card .

United Club℠ Infinite Card .

United℠ Explorer Card .

United Quest℠ Card .

U.S. Bank Altitude™ Reserve Visa Infinite® Card .

Terms apply.

» SEE the best credit cards that pay for TSA PreCheck and Global Entry

Before you even make it to your departure gate, you have to clear a TSA checkpoint. This means you must adhere to the TSA liquid limit in order to make it through security.

Containers that are 3.4 ounces or less are allowed, but there are other rules to keep in mind as well.

Carry-on liquid limit

The TSA liquid rule — also known as the 3-1-1 rule (3 ounces, 1 bag per 1 person) — is straightforward: "You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item." Any liquids in larger containers will have to go into checked baggage (and are subject to overweight fees).

A basic clear, zip-top container qualifies as an eligible quart-size bag for passing through security.

The easiest way to manage the amount of fluids in your carry-on is to start with containers that are no larger than 3.4 ounces or 100 milliliters and your quart-sized bag.

The maximum carry-on liquid size and amount will depend on how much you can fit into your single quart-sized bag.

3-1-1 liquids rule exemptions

The 3-1-1 liquid rule has several exceptions if you're traveling with certain liquid medicines or baby food.

TSA allows larger amounts of certain medically necessary liquids, gels and aerosols in "reasonable quantities" for your trip. The amount allowed is not stated.

The only catch? You must declare the medication to TSA officers at the checkpoint for inspection, alongside any accessories associated with your medicine, such as freezer packs or syringes.

Labeling your medical items can help facilitate the screening process.

Formula and breast milk are considered medically necessary liquids, and thus exempt from the carry-on liquid limit. Water and juice for babies is also allowed in quantities greater than 3.4 ounces or 100 milliliters.

These child and infant nourishment items are allowed in carry-on baggage and do not need to fit within a quart-sized bag. You may also bring teethers that are gel- or liquid-filled and canned/jarred/processed baby food in your carry-on baggage.

» Learn more: 7 ways to avoid paying bag fees

Duty-free liquids

The final exemption to TSA liquid limits apply to duty-free liquids purchased during inbound international flights. It's important that these bags are secure and temper evident and stored in a transparent bag.

Be sure to keep the item's original receipt handy in case a TSA officer asks to see it.

» Learn more: Can you bring food through TSA?

The only flammables allowed in a carry-on are cigars, cigarettes, disposable and Zippo lighters, and dry batteries (like AAs or AAAs).

Camping and sports equipment

You can carry-on an air mattress with a built-in pump (by following special instructions), antlers, basketballs, footballs, baseballs, soccer balls, bike chains and bike pumps. Bicycle allowances vary by airline, but baseball bats, bear spray and bear bangers are never allowed — nor is aerosol insecticide.

Other items

There are some banned items, including knives, firearms and box cutters. A full list of which can be found on TSA’s website .

Still not sure if something you plan to carry-on is restricted? Send a photo to AskTSA on Twitter or Facebook Messenger to find out.

» Learn more: What foods you can bring on a plane

No matter which airline you fly with, first make sure you know what size carry-on you’re allowed to bring onboard and are familiar with (and prepared for) TSA’s carry-on restrictions, too. Then, you can expect a smoother and less stressful airport and airliner experience.

How to maximize your rewards

You want a travel credit card that prioritizes what’s important to you. Here are our picks for the best travel credit cards of 2024 , including those best for:

Flexibility, point transfers and a large bonus: Chase Sapphire Preferred® Card

No annual fee: Bank of America® Travel Rewards credit card

Flat-rate travel rewards: Capital One Venture Rewards Credit Card

Bonus travel rewards and high-end perks: Chase Sapphire Reserve®

Luxury perks: The Platinum Card® from American Express

Business travelers: Ink Business Preferred® Credit Card

Chase Sapphire Preferred Credit Card

1x-5x 5x on travel purchased through Chase Ultimate Rewards®, 3x on dining, select streaming services and online groceries, 2x on all other travel purchases, 1x on all other purchases.

60,000 Earn 60,000 bonus points after you spend $4,000 on purchases in the first 3 months from account opening. That's $750 toward travel when you redeem through Chase Ultimate Rewards®.

Chase Freedom Unlimited Credit Card

1.5%-6.5% Enjoy 6.5% cash back on travel purchased through Chase Travel; 4.5% cash back on drugstore purchases and dining at restaurants, including takeout and eligible delivery service, and 3% on all other purchases (on up to $20,000 spent in the first year). After your first year or $20,000 spent, enjoy 5% cash back on travel purchased through Chase Travel, 3% cash back on drugstore purchases and dining at restaurants, including takeout and eligible delivery service, and unlimited 1.5% cash back on all other purchases.

$300 Earn an additional 1.5% cash back on everything you buy (on up to $20,000 spent in the first year) - worth up to $300 cash back!

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2x-5x Earn unlimited 2X miles on every purchase, every day. Earn 5X miles on hotels and rental cars booked through Capital One Travel, where you'll get Capital One's best prices on thousands of trip options.

75,000 Enjoy a one-time bonus of 75,000 miles once you spend $4,000 on purchases within 3 months from account opening, equal to $750 in travel.

travel size liquid requirements

The TSA Liquid Limit You Need To Know For Airport Security

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Last Updated on November 1, 2021

There are actually three TSA liquid limits for fluids, gels, pastes, and creams packed in your carry-on bag.

These liquid limits are enforced by the TSA when going through airport security.

The limits are not about the moment that you step on the plane. They are about the moment your bags go through the scanners at the security checkpoint.

Liquids that you buy after the airport security checkpoint can be brought onto the plane without restrictions.

Let’s look at the checkpoint guidelines and the three limits.

The Liquids Limit – TSA Rules & Guidelines On Bringing Fluids On Planes

Transportation Security Administration’s official website outlines its liquid rules, but they don’t do a very good job of explaining why the liquids limits are in place.

The contents of your carry-on bag will be scanned by the x-ray machine. Crucially, the TSA cannot identify from the scanner whether liquids really are what they say they are on the label.

The x-ray scanners can detect weapons, but they can’t detect flammable liquids.

Any passenger’s liquids could be explosives in disguise. This is why they are a security threat and why the TSA liquid limits exist. They want to make sure nobody is bringing a lot of liquids on the plane, just in case.

Here are the three liquid limits that the TSA imposes.

TSA Liquid Limit 1 – Only Travel Size Containers

You must carry liquids, gels, and aerosols in a travel-size container.

Travel-size means bottles that are 3.4 oz or less. If you are thinking 3.4 ounce is a strange number it’s exactly 100 ml and that is the standard maximum size of carry-on liquids around the world.

Check this post if you want to get a feel for what 3.4 oz looks like .

It is the size of container that is important, not the amount of liquid in the the containers. So half empty tubes of toothpaste don’t qualify.

Generally, larger containers with more than 3.4 fluid ounces cannot be packed in carry-on luggage.

If you exceed the liquid limit TSA will confiscate it and throw it in the trash. Although, the TSA prefers to say you “voluntarily surrender” the liquid since you could, in theory, choose not to fly.

TSA Liquid Limit 2 – A Quart Size Bag

All your travel-size bottles must be packed in a one quart sized bag .

There are 32 ounces in a quart, but you won’t be able to pack 32 ounces of liquids in your hand luggage. The shape of the bottles makes it awkward to pack a Ziploc baggie to the maximum.

The total liquids limit for the TSA is probably around 25 ounces. That would be 7 or 8 travel-size bottles packed in a quart-size plastic baggie.

The TSA says a 6 x 9 inches Ziploc bag is quart-sized, but there are other bag shapes that are suitable.

Go ahead and adjust the dimensions of the ziploc bag to find out if it's quart-sized and TSA approved.

You could also buy a reusable “quart size” bag from amazon. Most of them are actually larger than one quart but everyone seems to be getting away with it .

TSA Liquid Limit 3 – Only One Quart Bag Per Passenger

The 3-1-1 TSA rules only permit one plastic quart bag per passenger , that’s another limit, it’s not one bag per carry-on suitcase. So you can’t get around the TSA liquid limits by bringing more than one carry-on.

The 3-1-1 Rule

We can now see why it’s called The 3-1-1 Liquids Rule. There are 3 TSA liquids limits.

  • Three point four ounces travel size bottles – the container size limit.
  • In a one quart size plastic bag – the plastic bag size limit.
  • And only one bag per passenger – the number of bags limit.

The TSA 3-1-1 rule is kinda confusing if you ask me. It should be called The 3.4 – 1 Rule but then that wouldn’t have been as catchy.

What does the TSA consider to be a liquid?

The TSA often says “If you can squeeze it, smear it, pump it, spread it, spray it, or spill it then it’s considered a liquid”.

That means that some items that you might not think are liquids are considered to be liquids by the TSA security officers.

A lot of travelers are caught out by spreads, creams, and gels. In the mind of the average person, something that doesn’t pour isn’t a liquid, but that’s not how the TSA defines it.

It can also matter whether the liquid is “flying solo” or is part of something.

For example, liquid food fillings that are part of solid food don’t count as liquids.

The classic example is peanut butter . Peanut butter in a jar is considered a liquid, whereas a PB&J sandwich is considered a solid.

And remember this from science class, frozen liquids become solids.

That’s true at the airport security checkpoint too.

Liquids that are restricted at room temperature become unrestricted if they are frozen solid. That means if a liquid is frozen the 3.4 oz limit does not apply. The challenge is getting the liquid to the airport while it is still frozen solid. The TSA will refuse to let it past if it is beginning to melt. Ice packs, coolers, and perhaps dry ice could help.

Some items that passengers get caught out by are gel packs, canned foods, snow globes, bug spray, and sunscreen.

Liquids That Are Never Allowed Through Security

There are some liquids that are never permitted on the plane even in travel-size bottles.

You cannot bring hazardous materials (Hazmat) flammable liquids on to the plane even in quantities smaller than 3.4 oz.

Examples are:

  • Aerosols that are not toiletries
  • Paint thinner
  • Lighter fluid
  • Lighter gas

Only travel-size aerosols that are toiletries are permitted in hand luggage. The definition of a toiletry is something that is sprayed on your skin. So aerosol deodorant is permitted, but aerosol air freshener is not.

Exemption To The TSA Liquids Limit

There are some liquids permitted in carry-on baggage in containers larger than 3.4 ounces

Liquid Foods For Babies & Infants

Feel free to bring water, juice, or soup for an infant.

You also don’t need to worry about breast milk or baby formula.

You simply put these items in a separate bin at for screening at the checkpoint.

When a child is able to walk through airport security unassisted by an adult they are no longer considered an infant and the exemption ceases to apply.

Medically Necessary Liquids

You can also pack reasonable quantities of medically necessary liquids in carry-on bags in containers larger than 3.4 oz.

Additional screening is required so place these liquids in a separate bin at the checkpoint.

You don’t need any documentation from your doctor.

Duty Free Alcohol

Duty free liquids that you have purchased after the checkpoint can be brought on to the plane.

If you have a connecting flight you should be able to bring the alcohol through the security checkpoint if it is in tamper evident bags.

Liquid Limits For Checked Baggage

Most toiletries that are limited in carry-ons are unlimited in checked bags.

The amount of shampoo, shower gel, and sun cream you pack in your checked bag is up to you.

Aerosols and flammable liquids still need special attention, as there are additional rules for these products .

Liquor that is above 24% ABV but less than 70% ABV is restricted to 5 liters maximum because it’s somewhat flammable. Liquor over 70% ABV is banned in both carry-on and checked luggage.

Take It To The Limit… One More Time

According to the Transportation Security Administration, liquids, gels, and aerosols packed in hand luggage can only be 3.4 ounces or less when going through the airport security checkpoint.

You must pack all your liquids in one quart-size bag.

You can only have one bag per passenger.

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Calling All Travelers: These Are the Official TSA Liquid Rules

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We've all fallen victim to TSA while traveling; here's a refresher so you don't make the same mistakes again.

TSA Liquid Rules:

According to the TSA website , these rules apply for liquids, aerosols, gels, creams, and pastes.

All liquids must be in a 3.4oz or smaller container. Your serums, creams, cleansers, and masks are too expensive to lose, so check their sizes and if they're too big, leave them at home or transfer them to a smaller container.

They have to be able to fit in a quart-size bag. Before you throw 10 containers of liquids into your carry-on, make sure that everything can fit in a quart-size bag. Think about what you really need for your trip, a la Marie Kondo , and remember you can always buy things once you arrive at your destination.

Powders must be in 12oz containers or smaller. TSA placed new restrictions on powders in 2018. Ensure that your makeup, protein powder, and baby powder are in containers within that range, or put them into a checked bag.

Travel-Size Beauty Essentials

The Littles™ Set

Drunk Elephant The Littles™ Set

Power Couple Kit

Sunday Riley Power Couple Kit

The Four Pack

Drybar The Four Pack

Truth Serum®

Ole Henrikson Truth Serum®

Facial Treatment Essence Mini

SK-II Facial Treatment Essence Mini

The Moisturizing Soft Cream

LA MER The Moisturizing Soft Cream

Rose Deep Hydration Toner

Fresh Rose Deep Hydration Toner

Santal 33 & AnOther 13 Set

LE LABO Santal 33 & AnOther 13 Set

Super Age-Correcting Collection

Kiehl's Since 1851 Super Age-Correcting Collection

Urban Environment Oil-Free Sunscreen

Shiseido Urban Environment Oil-Free Sunscreen

R+Co Television Perfect Hair Shampoo

R+Co Television Perfect Hair Shampoo

Suncare Sport Sunscreen Spray SPF 30

COOLA Suncare Sport Sunscreen Spray SPF 30

Anything else has to go into a checked bag. If you can't part with your full-size products, they have to go into a checked bag to avoid getting tossed into the TSA product graveyard. If you're looking to save money, share one checked bag with your whole group.

Only empty water bottles will pass the TSA checkpoint. If you bring a refillable water bottle, make sure it's empty before you approach security. You can fill it up after you go through the checkpoint or buy water in the terminal.

There are exemptions. If you use a medication that comes in liquid, aerosol, gel, cream, or paste form and the container is larger than 3.4oz, it's exempt from the above rules. Similarly, if you're carrying baby formula, breast milk, or other liquid foods for your child, these are also exempt.

Headshot of Sarah Madaus

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TSA Liquids Rule Explained: What Size Liquid Can You Bring on a Plane?

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What you can and can’t bring on a plane, including the amount allowed, can be very confusing for even the most experienced of flyers, especially when it comes to liquids.

According to TSA regulations, you are allowed to bring liquids in containers that don’t exceed 3.4oz/100ml in your carry on.

There are also limits when liquids are packed in your checked bags, which many people are not aware of, though the limits are much greater.

Table of Contents

  • 1.1 Carry on Bags
  • 1.2 Checked Bags
  • 2 No Differences For International Flights
  • 3 Airlines Follow TSA Regulations
  • 4 How to Pack Liquids for Flying
  • 5 You Will Be Able to Bring 7-8 Bottles in Your Carry On
  • 6.1 Carry On Bags
  • 6.2 Checked Bags
  • 7 A Loophole to Bring More Than 3.4 Oz/100ml On a Plane
  • 8 Exceptions to the 3-1-1 Rule
  • 9 Liquids That Are Forbidden
  • 10 Surprising Items That Qualify As Liquids
  • 11 What the 3-1-1 Rule Stands For
  • 12 Why the 3-1-1 Rule Exists

What Size Liquid Can You Take on a Plane?

Carry on bags.

The TSA has a rule in place called the 3-1-1 Rule .

The 3-1-1 Rule states that “each passenger may carry liquids, gels and aerosols in travel-size containers that are 3.4 ounces or 100 milliliters .”

These containers must also fit in a 1-quart sized, resealable bag.

You are required to take this bag out of your carry on and place it in a screening bin as you go through airport security.

Note that it is the size of the container itself and not how much liquid is in the container that matters.

So, if you have a bottle that contains just 1ml of liquid inside a 4oz container, it still won’t be allowed through.

Checked Bags

Not many passengers are aware that there are restrictions on the quantity of liquids you can pack in their checked bags.

According to the TSA:

  • A container must not exceed 0.5 kg (18 ounces) or 500 ml (17 fluid ounces).
  • The total aggregate quantity of your toiletry products must also not exceed 2 kg (70 ounces) or 2 L (68 fluid ounces).

No Differences For International Flights

Even though it may not be called the 3-1-1 rule worldwide, the rules remain the same if you’re flying internationally.

So regardless if you’re flying from or within Mexico, Canada, the UK, Europe or any other country, you are only allowed to pack liquids (as well as gels and aerosols) in containers that are no larger than 3.4oz/100ml in your carry on.

Airlines Follow TSA Regulations

All airlines follow TSA regulations .

So this means that regardless if you’re flying with Delta, Southwest, American Airlines, JetBlue, or any other regional or major air carrier worldwide, you are only allowed to bring liquids in containers that do not exceed 3.4oz/100ml in your carry on.

How to Pack Liquids for Flying

There are a few guidelines you should follow to make your next flight go as smoothly as possible.

  • Make sure that no container you want to bring is no larger than 3.4oz/100ml.
  • Buy travel-friendly products of your favorite products.
  • If the company doesn’t sell travel-friendly sizes, buy your own 3.4oz/100ml containers and transfer the liquids into them.
  • Consider packing non-liquid alternatives instead (you can bring a bar of soap on a plane on a plane , for example, with no restrictions. The same applies to sunscreen sticks ).
  • Share toiletry space with your travel partner, as the 3-1-1 Rule applies to each passenger.
  • Store your items in a clear bag that is no larger than 1 quart.
  • Use your checked luggage for liquids in larger containers.

You Will Be Able to Bring 7-8 Bottles in Your Carry On

In total, you can take 32 ounces (or 1 quart) of liquids on a plane.

But as the containers themselves will take up space in the single quart-sized bag, you won’t be able to take a full 32 ounces of liquids in your carry on.

You will be able to bring about 25 ounces in total, in 7 or 8 travel-sized 3.4oz/100ml containers onto a plane in your carry on.

How Many Ounces in Total Can You Take On a Plane?

Carry on bags.

As just mentioned, you can bring 32 ounces (or 1 quart of liquids on a plane), though it will more likely be 25 ounces in 7-8 bottles.

If liquids are packed in your checked bags, each container must not exceed 18 ounces or 17 fluid ounces).

The total aggregate quantity of your toiletry products must also not exceed 70 ounces or 68 fluid ounces.

A Loophole to Bring More Than 3.4 Oz/100ml On a Plane

There is a loophole that lets you bring more than 3.4oz/100ml of liquids on a plane, though it only works with very few items and under certain circumstances.

If you are traveling with a young child or baby, you can say that the item is for them.

Of course, this will only work for bringing a water bottle on a plane and not items like alcohol, coffee or tea . 

Exceptions to the 3-1-1 Rule

There are several exceptions to the 3-1-1 Rule.

The following items, if packed in your carry on bags, are allowed to exceed 3.4 oz/100ml:

  • Breast milk and formula
  • Liquid medication
  • Hand sanitizer
  • Jumbo disinfecting wipes
  • STEB items (secure, tamper-evident bags purchased at the airport)
  • Cough syrup
  • Gel-filled bras
  • Saline solution
  • Ice packs (must be frozen solid)

Liquids That Are Forbidden

There are several liquids that, even if under 3.4 oz/100ml, you are not allowed to bring on a plane in either your carry on or checked bags.

These items include:

  • Most flammable liquids ( you can bring nail polish on a plane , though)
  • Most toxic liquids
  • Aerosols that do not qualify as toiletries
  • Alcoholic Beverages over 70% ABV (140 proof)
  • Insecticide
  • Spray Paint
  • Spray Starch
  • Cooking Spray

Surprising Items That Qualify As Liquids

There are also items that you wouldn’t expect to count as liquids, but actually do.

  • Peanut butter
  • Hair mousse
  • Snow globes

What the 3-1-1 Rule Stands For

The 3-1-1 Rule stands for 3 ounces, 1 passenger, 1 quart-sized bag.

While the limit is actually 3.4 ounces instead of 3 ounces, we guess that 3.4-1-1 Rule didn’t have the same ring to it.

Why the 3-1-1 Rule Exists

The 3-1-1 Rule exists because terrorists have previously tried to sneak liquid explosives on a plane on more than one occasion.

While the rule is frustrating, it exists for the safety of passengers.

Ella Dunham

Ella Dunham, a Freelance Travel Journalist and Marketing Manager, boasts an impressive career spanning eight years in the travel and tourism sectors.

Honored as one of "30 Under 30" by TTG Media (the world’s very first weekly travel trade newspaper), a "Tour Operator Travel Guru" and "Legend Award" winner, Ella is also a Fellow of the Institute of Travel, a Member of the Association of Women Travel Executives, has completed over 250 travel modules, and hosts travel-focused segments on national radio shows where she provides insights on travel regulations and destinations.

Ella has visited over 40 countries (with 10 more planned this year).

Related Posts:

15 easy, breezy, beautiful TSA-approved health and beauty items

Tarah Chieffi

The Transportation Security Administration has applied the 3-1-1 rule for liquids in carry-on baggage since 2006. Under the 3-1-1 rule, travelers may bring liquids in containers that are 3.4 ounces or smaller ("3") in a clear quart-size plastic bag ("1") and each passenger is allowed only one plastic bag ("1").

TSA's 3-1-1 rule applies to liquids, creams, gels, pastes and aerosols. Health and beauty items that you may use every day at home like sunscreen, soap, lotion, hair products, makeup, shampoo and conditioner may not make the cut.

Rather than packing your entire skin care and hair care routine into a checked bag or crossing your fingers for decent-performing hotel toiletries, we've rounded up 15 health and beauty items that pass the TSA's 3-1-1 rule with flying colors. Some fall within the 3.4-ounce requirement and some aren't considered a liquid at all (yes, toothpaste tabs are a real thing).

CeraVe Moisturizing Cream

travel size liquid requirements

CeraVe Moisturizing Cream ($7.99) is a master of multitasking that can be used to relieve dryness on the face, hands and body. This dermatologist-developed cream is gentle enough that it won't irritate skin or clog pores and is long-lasting enough to help skin retain moisture for a full 24 hours. Keep it close by if you have a long flight in your future to combat the effects of dry air in flight.

Lush Toothpaste Tabs

travel size liquid requirements

There are a lot of reasons to love Lush Toothpaste Tabs ($12). They are primarily made with natural ingredients, have a minty orange flavor and come in a convenient recycled (and recyclable) container. When you are ready to brush, crunch one tablet up between your teeth and brush as usual with a wet toothbrush. You'll have minty-fresh breath and more space in your carry-on for liquids.

Rare Beauty Bronzer Stick

travel size liquid requirements

Rare Beauty Bronzer Stick's ($23) creamy (i.e., not considered a liquid by TSA) formula blends effortlessly into your skin, providing as little or as much face-sculpting, sun-kissed warmth as you want. Even better, you can use your fingers to blend this never-greasy, water-resistant bronzer and leave the bronzer brush at home.

Lush Shampoo Bar

travel size liquid requirements

This compact, solid Lush Shampoo Bar ($14.50) is exempt from the TSA liquids rule and better for the environment than purchasing miniature toiletries every time you travel. Just one Lush Shampoo Bar replaces up to three 250-millimeter bottles of liquid shampoo. This convenient alternative to traditional shampoo comes in a variety of scents, but we love that this citrus option adds volume and shine while it cleanses.

Subtl Makeup Stack

travel size liquid requirements

Each Subtl Makeup Stack ($12 and up) is a fully customizable "stack" of makeup pods that are space-saving, multifunctional and travel-ready. You can choose from pre-made stacks or design your own with products for face, eyes and lips, plus accessories like travel brushes, a makeup mirror and a brush cleaner.

Tula Glow & Get It Cooling & Brightening Eye Balm

travel size liquid requirements

Tula Glow & Get It Cooling & Brightening Eye Balm ($30) is made with probiotic extracts, caffeine and superfoods to combat puffiness and dark circles by hydrating and energizing post-red-eye-flight eyes. This eye balm also provides an instant cooling effect and helps to brighten the under-eye area.

Supergoop SPF Starter Kit

travel size liquid requirements

The Supergoop! SPF Starter Kit ($25, regularly $42.88) comes with three sun-protection products for the face and body in a convenient reusable pouch. Inside, you'll find Supergoop bestsellers that provide moisture and a dewy glow in TSA-compliant packaging that is 1 ounce or smaller.

Wander Beauty Baggage Claim Gold Eye Masks

travel size liquid requirements

Tired eyes are a common byproduct of long travel days. Keep a pair of Wander Beauty Baggage Claim Gold Eye Masks ($26) in your carry-on to rehydrate and invigorate dull, puffy eyes before you set out to explore your destination. If you feel so moved, snap a selfie of your "GoldenEye" moment — self-care never looked so good.

Neutrogena Makeup Remover Melting Balm

travel size liquid requirements

A good makeup-removing balm should be strong enough to take off even the most stubborn waterproof makeup without irritating skin. Neutrogena Makeup Remover Melting Balm ($10.87) easily melts away makeup and soothes skin with nourishing vitamin E. The 2-ounce package is TSA-compliant and small enough to fit in any carry-on.

Supergoop (Re)setting SPF Mineral Powder

travel size liquid requirements

If you've already done your makeup for the day, you don't want to ruin it by slathering on another layer of sunscreen. The solution you need is Supergoop (Re)Setting SPF Mineral Powder ($30). This 100% mineral powder provides skin with SPF 35 protection, while mattifying shine and setting makeup, and the all-in-one packaging is perfect for travel.

Gilette Venus Travel Razor

travel size liquid requirements

All disposable and cartridge razors are allowed in carry-on baggage per TSA guidelines, but the compact size and on-the-go storage case of the Gilette Venus Travel Razor ($14.99) make it more convenient for travel. This triple-blade razor with built-in moisturizers far surpasses any razor you will find in a hotel gift shop.

CeraVe Hydrating Makeup Removing Wipes

travel size liquid requirements

CeraVe Hydrating Makeup Removing Wipes ($9.97) cleanse and hydrate simultaneously without aggravating sensitive skin. These wipes are gentle enough for all skin types and are more convenient than balms or liquid makeup removers when you are on a flight or out and about.

Malin + Goetz Starter Kit

travel size liquid requirements

If you jump with joy every time you step into a hotel room with Malin + Goetz toiletries, you can now have a set of your very own. The Malin + Goetz Starter Kit ($33.91) comes with six, 1-ounce tubes of its fan-favorite products for cleansing and moisturizing from head to toe.

TSA-Approved Toiletry Kit

travel size liquid requirements

This TSA-Approved Toiletry Kit ($28.99, regular price $32.99) takes the guesswork out of packing TSA-approved toiletries. Organized into one convenient travel pouch, this 20-piece kit comes with everything you need for hair care, skin care, first aid and more. They even threw in some Tic Tacs for fresh breath.

Aesop Departure Travel Kit

travel size liquid requirements

The Aesop Departure Travel Kit ($79.99) comes with seven of Aesop's most popular items that smell great and perform well — two qualities you shouldn't need to sacrifice just because you are traveling. They are also convenient for use while in transit. The toothpaste and mouthwash keep your breath minty fresh, the moisturizers are soothing and hydrating, and the rinse-free hand wash doesn't even require water.

Bottom line

If you have a robust health and beauty routine, it may seem impossible to bring everything you need while sticking to the TSA's 3-1-1 guidelines for liquids. With these travel-friendly products, you'll have plenty of space for all of your favorite products and room leftover to try a few new ones.

The U.K. Ended Its Travel-Size Liquid Rule for Carry-Ons—Will the U.S. Do the Same?

By Jessica Puckett

Travelers seamless pattern. People going with luggage. Travel and transportation theme flat vector illustration.

Passing through airport security in the U.K. is about to get easier and more streamlined, as U.K. officials announced that the rule mandating liquids in carry-on bags be 100ml (3.4 ounces) or less will no longer be enforced, starting in June 2024. 

When the rule ends, passengers will be able to carry-on liquids measuring up to two liters in volume, the BBC reports . Additionally, passengers will no longer need to remove electronics from bags, such as laptops. Previously, major airports in the U.K., such as London Heathrow, were known for their stringent enforcements of the liquid rules.

In the U.S., similar policies are still in effect at airports around the country, with the TSA enforcing its so-called “ 3-1-1 ” liquid rule for carry-on bags: all liquids must be 3.4 ounces or less and fit in a single, one-quart clear bag. (Though there are  some exceptions to those rules.)

The more relaxed screening policies in the U.K. are possible thanks to new X-ray scanners that use computed tomography (CT) technology to produce more detailed, 3D images of luggage contents. (The technology is similar to a CT scan you might get at a hospital.) Most airports in the U.K. will need to upgrade their X-ray machines to the newer high-tech versions by June 2024. 

The same enhanced CT technology has been in use at U.S. airports for several years now, with the TSA rapidly expanding the scanners to dozens of airports nationwide. As of May 2022, the agency said it had deployed at least 402 CT units to 163 airports around the country. Over the summer, officials installed more of the scanners at additional airport checkpoints in anticipation of an uptick in air travelers, including at Billings Logan International Airport in Montana , Albany International Airport in New York, Buffalo Niagara International Airport in New York, Cincinnati/Northern Kentucky International Airport and Raleigh-Durham International Airport in North Carolina, the TSA  said in a release . 

With that in mind, will the TSA follow the U.K.’s lead and ditch its rules for carry-on liquids? Currently at U.S. security checkpoints with CT scanners, passengers already have somewhat more relaxed screening rules, as they aren’t required to remove their travel-size liquids, electronics, or food from their carry-on bags, according to the TSA. That was a precursor step to the new U.K. policy at  London City airport , which received CT scanners in November 2022 and announced that passengers no longer had to remove any items from their bags. 

But some industry analysts say scanning equipment is only one piece of the puzzle . “I believe that TSA and other aviation security organizations will study the results from the UK’s decision closely and carefully,” says Henry Harteveldt, an aviation expert and president of Atmosphere Research. “If behavioral profiling and other similar tools allow security organizations to potentially detect people who may pose a danger to airline crews and passengers, it may help reduce the need for measures such as the 100ml limit on liquids and the TSA’s 3-1-1 policy.”

Indeed, it seems U.S. officials plan to take it slow when considering any changes to the current TSA 3.4-oz liquid rule, which has been the international standard since it was implemented in 2006. “Computed Tomography technology produces 3-D images that can be rotated and combined with advanced detection algorithms to produce a substantial improvement in security screening,” Robert Carter Langston, TSA's press secretary, said in an emailed statement. “While we have them deployed at more checkpoints, we are years away from announcing a change to the current liquids rule.” 

Although U.S. passengers still need to pack travel-size liquids for the time being, that doesn’t mean that the security checkpoint hasn’t been seeing other improvements. Aside from rolling out more CT scanners, TSA has been deploying credential authentication technology: new ID scanners that don’t require passengers to show their boarding passes . Earlier in 2022, the agency also began accepting digital IDs from the Apple Wallet app at certain airports and testing an expansion of facial recognition to whisk travelers through even faster.

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Things you can't bring through airport security—and alternatives that are TSA-approved

travel size liquid requirements

— Recommendations are independently chosen by Reviewed’s editors. Purchases you make through the links below may earn us and our publishing partners a commission.

Traveling can be a lot of fun, but undoubtedly the least enjoyable part of any trip is navigating the airport. You may have to deal with layovers, delays and, yes, the Transportation Security Association’s (TSA) regulations that can throw a wrench in your packing.  

It can be a bit confusing figuring out what you can or can’t bring, especially as it relates to your toiletries. We’ll walk you through the basics and what you can—and should—pack in your carry-on for your next trip. 

Make smart choices without hours of googling. Subscribe to The Checklist newsletter for expert product advice and recommendations.  

What is the 3-1-1 rule?  

The 3-1-1 rule is the guideline that you must follow for your liquids to be allowed through security. Each liquid must be in a 3.2-oz or less container (3), all the containers must fit inside a 1-quart bag (1) and you can only bring one of these bags aboard with you (1). 

Learn more: Best travel insurance

►Related: Chaos at the airport! Pro strategies for surviving the next air travel meltdown

What can go through airport security with you  

A TSA-compliant bag  

When it comes to packing a TSA-compliant bag, the most important product you'll need is the bag itself. As per TSA-guidelines, the bag must be clear and be no bigger than one quart in capacity. Fortunately, this top-rated bag from Amazon fits the bill. With over 12,000 five-star reviews, buyers love bags by PACKISM for their sturdiness, size, value and ease-of-use. 

Travel-sized toothpaste  

Your dental health is important, so make sure to pack travel-sized toothpaste for your next trip.  Colgate is a widely trusted toothpaste brand that has several small sizes to choose from. A 1.4-ounce tube might be better for a longer trip, but a 0.88-ounce tube will allow you to fit more items in your quart bag. 

Travel-sized shampoo  

Shampoo is another vital toiletry to pack along for an extended trip. One well-reviewed shampoo to consider buying is Moroccanoil's moisturizing shampoo . It has over 15,000 five-star ratings, with buyers loving it because it leaves their hair feeling soft, moisturized and healthy. 

Travel-sized body wash  

Body wash is another one that often gets confiscated by TSA because of its size. Aveeno is a popular body wash brand available on Amazon that comes in just the right size for travel. Reviewers love it because it's nearly scentless and moisturizes skin well.  

Travel-sized deodorant  

Being squished next to someone on a long plane ride is bad enough; adding B.O. to the mix can make the situation a whole lot worse . Don't be that person. Instead, make sure you pack (and use ) quality deodorant for the plane ride. We also suggest making sure that deodorant is also anti-perspirant. Popular deodorant brands Degree and Invisible both offer their products in travel sizes. 

Refillable travel bottles  

Why limit yourself to brands with travel-sized containers. By using small, refillable containers, you can take your favorite brands of toiletries with you. Vonpril sells a four-pack of 2-oz, leak-proof, squeezable refillable containers that will meet your travel needs. Reviewers love that these bottles are easy to fill, easy to clean and sturdy. 

A pre-packaged travel kit  

There are several pre-packed TSA-compliant bags that you can buy ahead of your next trip to make packing a lot easier. Convenience Kits International offers their pre-packed bags in both Women’s and Men’s versions. Buyers of both say that these packs have all the essentials you'll need to enjoy your trip such as tooth paste, a tooth brush, deodorant and a comb. 

A refillable water bottle  

You can bring a water bottle through security at airports—so long as it’s empty. While a minor inconvenience, most airports have a water fountain or restaurants that offer water for you to fill up your bottle. If you're looking for a new reusable water bottle, we recommend checking out the best one we've tested , the Brita BB11 Premium Filtering Water Bottle . We love this water bottle because it opens with one hand, its strong filter keeps out scents and odors and its insulation keeps water cool for up to 24 hours. 

Carry-on luggage  

Your meticulous packing is all so that your necessities can fit in this—a carry on bag. If you're in the market for a new carry-on, we recommend our favorite , the Osprey Transporter Wheeled Carry-On . This lightweight carry-on features all-terrain wheels for smooth travel and a sturdy, retractable handle. For a less pricey option, we recommend our budget pick, the American Tourister Triumph NX 20" Spinner , which is spacious and easy to organize. 

Checked luggage  

What cannot fit (or isn't allowed) in your carry-on will have to go in checked luggage. The best checked luggage we've tested is the Travelpro Platinum Elite 29” Expandable Spinner thanks to its maneuverability, easy access and high-quality build. 

Still unsure about an item you plan to travel with? Visit TSA.gov for a complete list of what you can bring—and how to do so.  

The product experts at  Reviewed  have all your shopping needs covered. Follow Reviewed on  Facebook ,  Twitter ,  Instagram ,  TikTok  or  Flipboard  for the latest deals, product reviews, and more.

Prices were accurate at the time this article was published but may change over time.

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What Can I Bring?

Planning ahead and packing properly can facilitate the screening process and ease your travel experience at the airport. Know what you can pack in your carry-on and checked baggage before arriving at the airport by reviewing the lists below. Even if an item is generally permitted, it may be subject to additional screening or not allowed through the checkpoint if it triggers an alarm during the screening process, appears to have been tampered with, or poses other security concerns. Read about civil penalties for prohibited items .

  • Twitter: @AskTSA
  • Facebook Messenger:  www.fb.com/AskTSA
  • Apple Business Chat: AskTSA
  • Text Message: Text "Travel" to AskTSA (275-872)

The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.

Officers may ask you to power up your electronic device, including cell phones. Powerless devices will not be permitted onboard the aircraft. TSA does not read or copy information from your device.

travel size liquid requirements

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Airport 100ml liquid rule: when will the UK ban be lifted?

London city airport and teesside airports are the first to scrap 100ml liquid rule and the need to remove laptops for scanning.

travel size liquid requirements

T he 100ml liquid rule will continue at some of the busiest UK airports this summer because of a delay in the installation of the necessary equipment. The Department of Transport previously set a deadline of June 2024 for UK airports to introduce new 3D scanners that would end the need to remove liquids and laptops during pre-flight security checks. The 100ml liquid rule would also end, allowing passengers to bring bottles of up to two litres. But while smaller airports including Teesside and London City airport have already introduced the new technology, London Heathrow, Gatwick and Manchester are expected to miss the deadline.

Main photo: security notices at Luton Airport (Alamy)

Liquids and other items might soon no longer have to be removed from your baggage (Getty Images)

What are the current restrictions on liquids?

Most airports around the world have a limit on the amount of liquids you can take through airport security in your carry-on luggage. At the moment, the cap is one litre in most cases, split across containers with no more than 100ml of liquid, gel or cream inside. All of the liquids must be put inside a clear, resealable plastic bag that measures approximately 20cm x 20cm, and removed from your luggage to be scanned at airport security.

The rules were put into place in 2006, after the Metropolitan police foiled an al-Qaeda plot to bring down at least seven transatlantic flights using liquid explosives concealed in 500ml soft drinks bottles in August of that year. Immediately, authorities in the UK and US banned the carriage of all liquids except baby milk in hand luggage.

In November 2006, the ban was relaxed to allow for liquids, gels or creams in quantities of 100ml or less to be carried onboard as long as they were packed in a clear plastic bag and removed from luggage before screening. Within months, most other countries had followed suit, and a rule widely criticised as an overreaction had the immediate effect of creating long security queues at airports all over the world as passengers took extra time to unpack and repack hand luggage, and security staff were forced to make more manual inspections after scanning.

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When might the rules change.

The UK government believes the introduction of advanced computed tomography (CT) scanners will allow the restrictions on the carriage of liquids to be lifted, and the Department for Transport has given major airports including Heathrow, Gatwick, Stansted, Manchester, Newcastle and Edinburgh until 2024 to invest in the new technology — also known as 3D scanning.

The government confirmed in December 2022 that airports will have until June 2024 to upgrade their screening equipment and processes, meaning the 100ml liquid rule would be changed to two litres. In addition, the requirement to remove laptops from hand luggage would also be scrapped.

Teesside airport and London City airport were among the first to introduce the changes. Elsewhere, Shannon and Donegal airports in Ireland, which have 3D scanners in operation, have also lifted their bans.

However, Heathrow, Gatwick, Stansted and Manchester airports are behind schedule . While the technology has been installed in some security lanes already, it has not been implemented across the board. Gatwick says it expects to install the remaining scanners by the first three months of 2025, which is a similar time frame to Stansted and Manchester. Heathrow is also expecting to finish the installation in 2025.

The issue stems from the fact that introducing the scanners not only requires the purchase of expensive machines but also the reconfiguration of the security areas, including reinforcement of the floor in some cases due to the size and weight of the devices.

Nick Barton, chief executive of Birmingham airport, which is on track to meet the June deadline, told The Times : “The existing scanner is like a large domestic washing machine. The new machines are the size of a Ford Transit.”

Heathrow, Gatwick, Stansted and Manchester will be able to apply for an extension to the deadline but penalties haven’t been ruled out.

A Smiths Detection HI-SCAN unit at London Southend Airport (Getty Images)

How do 3D scanners work?

CT scanners such as the HI-SCAN 6040 CTiX — developed by London-based Smiths Detection and on trial at Heathrow since 2019 — use advanced x-ray technology to create layered 3D images that security staff can tilt and rotate to better identify the contents of cabin baggage. Coupled with the latest explosives-detection capabilities, the new scanners can detect a threat without the need for hand baggage to be unpacked, liquids to be limited to 100ml, or the use of clear plastic bags.

Will I still have to unpack my laptop at security?

Laptops, along with tablets, large cameras and any other electronic devices that currently need to be put on the belt in a separate tray can be left in your luggage where 3D scanners are in operation. In theory, this development, in conjunction with the end of the liquids ban, will greatly reduce the time taken for passengers to clear security.

Are there any other luggage restrictions?

Hand luggage allowances aside, there are a few other restrictions you should be aware of when going through airport security. Weapons are banned — but so is anything that might reasonably be confused for a weapon on an x-ray. That might include toy guns, swords and even something as innocuous as a snow globe. Hazardous materials fall into the same category.

Some destinations operate bio-secure rules, which means food items and certain toiletries (insect repellent for example) may also be restricted.

If you’re carrying a battery pack, make sure it’s suitable for air travel. The rules can vary between destinations and airlines but generally passengers are allowed to carry up to two spare lithium-ion batteries (101–160Wh) or lithium metal batteries (2-8 grams). If you have a suitcase with a built-in battery pack, this will need to be removed and taken as carry-on luggage.

Travellers will be able to keep their laptops and other electronics in their baggage when 3D scanning arrives (Getty Images)

Will biometric technology also speed up the airport experience?

It already has. The adoption of facial recognition technology at around 100 airports, including Beijing International, Tokyo’s Narita, Istanbul, Fort Lauderdale, Basel, Hamburg, Munich and Vienna, has driven down the time spent in queues both land and airside. The UK is a latecomer to the biometric revolution but in January 2023, Heathrow announced it was trialling facial recognition at Terminal 5. Airport bosses believe that biometrics will allow check-in, bag drop and boarding to be completed in less than 60 seconds per passenger, thus reducing the dependence on staff and increasing the time for airside shopping.

A British biometric passport (Alamy)

How does biometric technology work?

All you need is a biometric passport — which has an embedded chip containing unique identifiers such as face, fingerprint or iris data — and a boarding pass, and registration is quick and easy. The process can be completed at home, using a mobile phone to take a selfie, or at the airport, using self-service terminals that scan travel documents, take a high-resolution portrait and generate an encrypted biometric profile. Thereafter, bag drop, security, lounge access and boarding can be completed by simply glancing at facial recognition cameras at each barrier, thereby allowing fast-track progress from check-in to departure.

What is a biometric passport?

Easily identified by the gold camera logo on the cover, a biometric passport has a microchip embedded within it that contains identifying information such as your name, date of birth, fingerprints and facial and iris data. If your passport isn’t biometric then it’s probably out of date: every British passport issued since 2010 has the chip embedded.

• What happens if I miss my flight because of security queues? • Can I get a refund if my flight is cancelled?

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