TSA Liquid Rules In 2026: Understanding 3-1-1 & Liquid Size For Carry-Ons

Traveling with liquids is poised to become significantly easier due to ongoing advancements in security technology and proposed regulatory changes aimed at alleviating the burdens faced by passengers.

The complexities of transporting liquids, such as the necessity of using approved containers that comply with size restrictions and the requirement to remove these items from carry-on bags during security screenings, have historically made the travel experience stressful.

Passengers frequently encounter lengthy delays at airport security checkpoints as they navigate these liquid regulations. Such delays not only risk missed flights but also contribute to increased anxiety levels among travelers. Furthermore, if any issues arise during the inspection of liquid items, passengers may face additional screenings, complicating their travel experience even further.

As these advancements and regulatory changes take shape, travelers can look forward to a more streamlined and less stressful journey. As discussions around enhancing airport security measures continue, the hope is to find solutions that maintain safety without the current inconvenience associated with liquid restrictions.

TSA 3-1-1 Rule And Who Needs To Follow This Rule?

The TSA’s regulations regarding liquid carry-ons stipulate that each container must not exceed 3.4 ounces. While this specific measurement may appear unusual, it’s designed to align TSA guidelines with international laws that permit a maximum of 100 milliliters (which equals 3.4 ounces) per container.

In the 3-1-1 rule, the “3” refers to the maximum limit of 3.4 ounces per container. All 3.4-ounce containers must fit within a clear, one-quart bag, representing the first “1.” Each passenger is allowed only one of these bags, which accounts for the second “1” in the 3-1-1 designation. Liquids that do not adhere to these guidelines will not be allowed through security and will be discarded or confiscated.

Carry-On Liquid Size

3: Each liquid container must be 3.4 ounces (100 milliliters) or less.
1: All liquid containers must fit into one quart-sized, clear, resealable plastic bag.
1: Each passenger is allowed one bag

TSA official Website

Maximum Size: Each liquid container must not exceed 3.4 ounces (100 milliliters).

The “3” in the 3-1-1 rule specifically pertains to the limit on the size of liquid containers that passengers can carry onto an airplane. Each container must not exceed 3.4 ounces, which translates to approximately 100 milliliters.

When considering how to pack these liquid items, it’s important to note that all 3.4-ounce containers must fit within a single, clear one-quart bag. This clear bag serves as a transparent barrier, allowing security personnel to inspect the contents easily without needing to open the bag.

The mention of “one-quart” refers to the total volume of the bag, which is roughly equal to 946 milliliters, providing enough space for multiple containers while adhering to the rules.

Only one clear quart-sized bag per passenger is allowed, as indicated by the final “1” in the 3-1-1 rule.

Note: This limitation applies to every passenger on the flight, thereby ensuring that everyone adheres to the same standards for carrying liquids.

Who Needs To Follow The 3-1-1 Liquid Rule?

Every traveler, regardless of age or destination, must adhere to the 3-1-1 rule when carrying liquids in their carry-on bags.

Passengers flying internationally must follow the 3-1-1 rule when departing from U.S. airports. However, some international airports may have different regulations, so it’s essential to check the specific rules for your destination.

Is the TSA 3-1-1 Rule Still in Effect in 2026?

Yes, the TSA’s 3-1-1 rule for liquids remains in effect for carry-on luggage at U.S. airports. This rule is a worldwide standard for aviation security and continues to apply at U.S. airports.

Travelers are encouraged to pack their liquids in accordance with this rule to facilitate a smooth security screening process at U.S. airports. The 3-1-1 rule is not only implemented by the TSA. Still, it is also recognized as a standard practice by many international airports, making it a vital guideline for both domestic and international travelers.

TSA Liquid Size In 2026

3.4 Ounces – That’s Carry-on Liquid Limit For Every Passenger

Each passenger is allowed to bring liquids in containers of 3.4 ounces or less. All containers must fit in one quart-sized bag. However, at airports with new CT scanners, you may not need to remove liquids from your bag, as TSA officers can clearly see through bags with the new machines.

The TSA (Transportation Security Administration) is quite strict about the quart-sized bag rule for carry-on liquids!

One Bag Per Person: Each traveler is allowed only one quart-sized bag. So, if you’re traveling with family, each person needs their bag. The bag must be a clear, quart-sized (approximately 1 liter) zip-top bag. This helps TSA screeners easily see the contents.

The “Is it a Liquid?” Checklist

If you can Squeeze it, Smear it, Pump it, or Pour it, it’s a liquid.

This includes:

• Spreads: Peanut butter, honey, jam, and hummus.
• Toiletries: Mascara, lip gloss, foundation, and liquid deodorant.
• Unexpected Items: Snow globes, gel-filled candles, and canned soups.

Exceptions to the TSA 3-1-1 Rule

There are three main categories where you can bring more than 3.4 ounces:

Medically Necessary Liquids: This includes insulin, saline, and prescription creams. You must declare these to the officer for separate screening.

Travelers should keep their medications in their original packaging, with labels, if possible. Remind them to declare these items to the officer immediately to avoid being flagged for a “bag search.”

Baby Food & Milk: Formula, breast milk, and baby food pouches are allowed in “reasonable quantities.”

You do not need to have the child with you to transport breast milk.

Frozen Liquids: If a liquid is frozen rock solid at the time of screening, it is treated as a solid. If it is slushy or melting, it will be confiscated.

If these packs are slushy or melting, they are subject to additional screening; they must be frozen solid to pass through as a “solid.”

TSA New Rules 2026 + Travel Checklist

The checkpoint experience has undergone significant changes in 2026 under the Trump administration.

New CT Scanners

At many major hubs (like Atlanta, O’Hare, and select London/UK airports), new 3D CT scanners allow you to keep your liquids inside your bag. However, unless you see a sign specifically stating otherwise, you must still remove your 3-1-1 bag.

The $45 ConfirmID Fee

As of February 1, 2026, if you arrive at the checkpoint without a REAL ID (the one with the star) or a valid passport, you will be required to pay a $45 fee to use the “ConfirmID” verification system. This process can take up to 30 minutes. Tip: Don’t let a liquid bag search add another 20 minutes to an already delayed process.

Travelers with disabilities or medical conditions can reach out to TSA Cares at (855) 787-2227 to ask for assistance at the TSA checkpoint.

The REAL ID regulation pertains to the REAL ID Act enacted in 2005, setting basic security requirements for state-issued driver’s licenses and ID cards. Individuals must present a REAL ID-compliant card, or another approved form of ID like a passport, to enter specific federal facilities, gain access to nuclear power plants, and board commercial flights under federal regulations. REAL ID-compliant cards generally display a gold star in the corner. A federal law, the REAL ID Act, was implemented by Congress in 2005 as an initiative to bolster national security based on recommendations from the 9/11 Commission. Minimum Standards: It establishes essential federal requirements for state-issued driver’s licenses and identification cards. Purpose: These regulations aim to improve identification security and deter terrorist activities. What if I don’t possess a REAL ID? Travelers can complete this process in advance via the TSA’s new ConfirmID program, which incurs a fee of $45. Passengers must present either a printed or electronic receipt to the TSA officer for identity verification at the airport checkpoint.

REAL ID enforcement will be rolled out in phases, meaning that while some airports may continue to accept standard driver’s licenses, others will require REAL ID, resulting in possible variations.

Did TSA Remove The Shoe Policy?

The standard practice of removing shoes at security checks is no longer in effect; however, passengers may still need to take them off depending on alarms or the specific regulations of certain airports.

As of 2026, travelers no longer need to take off their shoes at airport security checkpoints, regardless of their age, as the TSA has abolished its mandatory shoe removal policy.

While you can generally keep your shoes on, they may be asked to be removed for extra screening if an alarm goes off or if you are chosen for additional checks.

Recently Prohibited Items in Checked Luggage

Although TSA’s updated multi-layered security system permits more leniency in certain areas, checked luggage remains under strict regulation.

TSA has prohibited 3 new items from checked luggage: cordless curling and straightening irons that use gas cartridges, butane-filled curling and straightening irons, and extra gas cartridges for these devices.

Travelers who are unsure about particular items are encouraged by TSA to utilize the “What Can I Bring” tool available on TSA.gov, download the free MyTSA app, text “Travel” to AskTSA (275872), or message @AskTSA on X or Facebook Messenger.

How to Stay Informed About TSA Rule Changes

The Code of Federal Regulations states that these items may contain flammable hydrocarbon gases like butane, which pose a fire hazard in the cargo holds of aircraft.

Travelers may still carry one cordless, butane-powered hairstyling tool in their carry-on luggage for personal use, provided it is adequately protected in a safety case to prevent accidental activation. However, spare butane cartridges are entirely prohibited.

To prevent your luggage from being flagged as hazardous materials (HAZMAT), ensure all permitted hairstyling tools are securely packed and adhere to TSA regulations.

Cordless curling irons containing gas or butane cartridges are prohibited in checked luggage. A notable regulation that will take effect is the prohibition of cordless hair styling tools that operate on gas or butane cartridges in checked luggage.

Reasons for the Prohibition

Hazards of Lithium Batteries: Lithium batteries have the potential to overheat, ignite, and even explode, particularly when stored in a suitcase. The FAA has documented cases of these devices creating problems during flights.

Dangers of Butane Gas: Cordless tools that operate on butane gas or similar fuels present risks of leaks or unintentional ignition, which can result in fires.

You may pack your cordless hair styling devices, as long as they are powered by gas or lithium batteries, in your carry-on luggage instead of in checked bags.

What to Keep in Mind About These New TSA Rules

Differing airport policies

Be prepared for variations in security measures between airports, particularly during the rollout of these new policies.

Hidden compartment water bottles

Reusable bottles designed with secret compartments or opaque linings may lead to misunderstandings and could be confiscated.

Cannabis remains illegal under federal law and is banned on TSA-regulated flights, even in states where it’s legal. Avoid carrying cannabis to prevent legal issues.

TSA Travel Checklist 2026

Before You Pack

Clear out pockets before packing.

Know what’s allowed in carry-on vs checked bags.

Bring allowed liquids in 3.4 oz (100 ml) containers. Follow the 3-1-1 rule; it’s best to carry solid items such as soap bars.

Place liquids in one clear, quart-size bag per traveler.

Use a lock that security can open if needed.

Packing Tips

Pack heavier items first.

Put large electronics where they’re easy to access.

Don’t put prohibited items in your carry-on.

Firearms must be unloaded, locked in a hard case, and declared in checked luggage only.

Keep pets on a leash for screening.

Getting to the Airport

Arrive early so you’re not rushed.

Wear shoes you can remove easily.

Avoid belts, bulky jewelry, and metal pieces that set off scanners.

At the Security Line

Have your RealID and boarding pass ready.

Remove items from pockets.

Place your liquids bag in the bin/container.

Remove large electronics (laptops, tablets) and place them in their own bin.

During Screening

Watch your carry-on go through the X-ray.

Comply with the TSA agents/officers.

Stay nearby in case an officer needs to speak with you.

After screening, collect everything before walking away.

Final Reminders

• Keep essentials (RealID, wallet, phone) in an easy-to-reach place.
• Stay calm and ask TSA staff if you’re unsure about anything.

New Travel Rules To Know For 2026

In 2026, corporate travelers will encounter more rigorous identification regulations, changing airline policies, and fresh international entry mandates that necessitate thorough planning.

Being aware of developments such as REAL ID penalties, alterations in airline loyalty programs, and Europe’s new digital authorization processes can assist travelers in steering clear of delays, unforeseen charges, and lost advantages.

Lithium batteries are under heightened scrutiny. While spare lithium batteries have long been prohibited in checked baggage, airlines and regulators are now imposing stricter regulations on where these batteries can be stored during flights.

Airlines are increasingly mandating that battery packs stay with passengers instead of being placed in overhead compartments.

The key point: travelers should expect stricter enforcement and review specific airline guidelines before flying, particularly with international airlines.

Airline Specific Changes

On the airline side, the year 2026 brings significant changes that are set to reshape the travel experience amid ongoing operational pressures and the evolution of revenue strategies. One of the most notable developments involves Southwest Airlines, a prominent carrier in the U.S., known for its unique open seating policy.

Starting January 27, 2026, the airline will officially implement a transition to assigned seating and the use of numbered boarding groups. This shift is likely to impact how passengers select their seats and board the aircraft, promoting a more organized boarding process and potentially enhancing overall passenger satisfaction.

Airline Policies For Plus-Size Passengers

In addition to the seating changes, the airline has also introduced a new policy aimed at accommodating plus-size passengers. Under this policy, travelers who do not fit comfortably into a single seat are now required to purchase a second seat at full price. This decision has sparked considerable discussion and mixed reactions among passengers and advocacy groups.

The airline does, however, outline a specific provision regarding potential refunds; passengers may receive a refund for the additional seat purchased only if the flight departs with empty seats available. This aspect of the policy highlights the airline’s intention to balance inclusivity with business considerations and operational efficiency.

Rules For International Travellers To Europe

International travelers, especially those traveling to Europe, will face some of the most notable procedural changes in years. The European Travel Information and Authorization System (ETIAS) will soon be mandatory for visa-free travelers entering Schengen countries (refer to the map above).

The authorization fee is about $20 and is valid for three years, but it needs to be acquired prior to departure.

Are Lithium Batteries Allowed In Carry-Ons?

Lithium batteries can be carried in hand luggage but are prohibited in checked bags. Certain airlines now mandate that battery packs remain with the traveler rather than in overhead compartments.

What is the fee for noncompliance with the REAL ID?

The TSA charges a noncompliance fee of $45, which is applicable for 10 days. If travelers continue to fly without a Real ID after this timeframe, they may need to pay the fee once more.

Is TSA PreCheck no longer worth it?

For those who travel often or wish to make airport security more efficient, TSA PreCheck and CLEAR are excellent options. Here’s why they are beneficial: TSA PreCheck

✅ Bypass the Long Lines: Take advantage of the exclusive PreCheck lane, which is typically much shorter than the regular security lines.

TSA Travel Policy For Liquids – Frequently Asked Questions About TSA Liquids

When it comes to flying, there are strict regulations regarding the amount of liquids you can bring in your carry-on luggage. The Transportation Security Administration (TSA) allows travelers to carry containers with liquids, gels, and aerosols as long as each container does not exceed 3.4 ounces or 100 milliliters.

This means that if you’re pondering how many 3-oz bottles you can fit into your carry-on, the answer is generally around 7 or 8, depending on the specific size and shape of the bottles.

Under TSA guidelines, all these containers must fit inside a single quart-sized, clear, resealable plastic bag. The capacity of these bags typically allows for about 25 liquid ounces in total. If you try to bring more than this limit, you may find that you cannot seal the bag, and TSA agents will likely require you to discard excess items.

The TSA defines a liquid as any substance that is not solid and can flow, including gels, creams, pastes, and aerosols.

How Does TSA Define A Liquid?

So, when preparing for your flight, remember to keep those liquid essentials within the guidelines, allowing for a smoother security process and peace of mind while you travel.

Is Lotion Considered A Liquid By TSA?

Yes, lotion is indeed considered a liquid under the TSA’s 3-1-1 rule! According to the Transportation Security Administration, liquids, gels, and aerosols must adhere to specific guidelines when you’re traveling by air.

As the TSA explains, “Each passenger is allowed one bag of liquids, gels, and aerosols.” This means that if you want to take your favorite lotion on your trip, you need to ensure it’s in a container that meets these size requirements.

It’s always a good idea to check the lotion bottle before packing. If it’s larger than 3.4 ounces, you’ll need to leave it behind or transfer some into a smaller container.

Is Toothpaste A Liquid TSA?

Yes, toothpaste is considered a liquid under the TSA’s 3-1-1 rule!

As of 2025, the Transportation Security Administration defines liquids, gels, and aerosols as items that can spill or ooze. This means that your favorite toothpaste, whether it’s a gel or a paste, falls into this category.

You can definitely bring solid tablets in your carry-ons as they don’t count as a liquid. If you want to take your toothpaste on your travels, just make sure it’s in a container that meets these size requirements.

Is Mascara A Liquid TSA?

Yes, the Transportation Security Administration (TSA) classifies mascara as a liquid. Therefore, it must comply with the TSA’s 3-1-1 rule regarding liquids for carry-on bags.

Mascara is considered a liquid by the TSA because it is gel-based and can leak or spill.

Can I bring Spray Sunscreen on a Plane?

Yes, you can bring spray sunscreen on a plane!

Spray sunscreen is considered a liquid and must adhere to the 3-1-1 rule [3.4 ounces (100 milliliters) or smaller]. The nozzle should be covered in order to avoid any accidental spray.

• Make sure your spray sunscreen is in a container that meets the size requirement. If it’s larger than 3.4 ounces, you’ll need to leave it behind or transfer some into a smaller container.
• All your liquids, including sunscreen, must fit into a single quart-sized, clear, resealable plastic bag.
• While sunscreen is generally allowed, it’s always a good idea to check for any specific airline restrictions or regulations at your destination.

Is Deodorant a Liquid TSA?

Yes, deodorant is typically classified as a liquid by TSA regulations, especially if it is in spray or gel form.

Solid stick deodorants are generally allowed in carry-on luggage without restrictions.

Can You Bring A Deodorant On The Plane?

Yes, you can bring deodorant on a plane, but liquid or gel deodorants must comply with TSA’s 3-1-1 rule: containers must be 3.4 ounces (100 milliliters) or less and fit in a quart-sized bag.

Solid deodorants are generally allowed without restrictions.

Types of Deodorant Allowed

• Stick or Roll-On Deodorant: Generally allowed in your carry-on, but make sure it’s under 3.4 ounces (100 ml) if you’re bringing it in liquid form.
• Spray Deodorant: If it’s an aerosol, it must also comply with the 3.4-ounce limit and be packed in your checked luggage if it exceeds that size.
• Gel or Cream Deodorant: These can go in your carry-on as long as they meet the liquid restrictions.

Can You Bring Travel Size Hair Spray On A Plane?

Yes, you can bring travel-size hair spray on a plane, but it must comply with TSA’s 3-1-1 rule.

Can I take Alcohol In My Carry-on Baggage?

Yes, you can take alcohol in your carry-on baggage, but it must comply with TSA restrictions.

If the alcohol is over 24% alcohol by volume (ABV), it must not exceed 3.4 ounces; however, if it’s 24% ABV or less, you can bring larger quantities, but check your airline’s policies for limits.

Can You Bring Makeup and Other Beauty Products In Your Carry-Ons?

Yes, you can bring makeup and other beauty products in your carry-ons, but they must comply with TSA’s liquid regulations.

Firstly, many people mistakenly believe that certain makeup products, like concealer or foundation, do not qualify as liquids.

Item Type	Allowed in Carry-On?	Key Rules
Liquids, gels, creams (foundation, mascara, skincare)	✅ Yes	Max 3.4 oz / 100 ml per item, all in one clear quart-size (1 L) bag
Solids & powders (powder makeup, lipstick, eyeshadow)	✅ Yes	No size limits
Makeup tools (brushes, sponges, tweezers)	✅ Yes	No restrictions
Aerosols (setting spray, hairspray)	✅ Yes	Must follow liquid size limits
Large liquid containers (>100 ml)	❌ No	Must go in checked luggage
Medical/essential liquids	✅ Yes	Declare at security
Duty-free liquids	✅ Yes	Must be sealed with receipt

On another note, full-sized powder makeup products, such as blush, bronzer, and powder foundation, do not fall under TSA liquid regulations. Hence, you can pack these items freely in either your carry-on or your checked bag without any limitations.

Is Lipstick A Liquid TSA?

No, lipstick is generally not considered a liquid and is allowed without restrictions.

Can I fly with Aerosol Cans?

Yes, you can fly with aerosol cans under TSA rules (2026), but there are clear limits depending on where they’re packed:

Each aerosol container must be ≤ 3.4 oz (100 ml). Larger aerosols can go in checked bags, typically subject to limits (like size per container and overall quantity) and requiring protective caps.

Aerosol Cans You Cannot Carry

Some aerosol products are prohibited entirely (in any luggage), especially flammable or hazardous sprays such as:

• Spray paint
• WD-40 and other solvents
• Certain insecticide sprays
• Self-defense sprays (e.g., pepper spray)

What Type of Snacks Can You Bring In Your Carry-Ons?

Yes, you can bring snacks on a plane under TSA rules as of 2026.

Solid Snacks — Allowed

When it comes to solid snacks, there’s a wide variety you can bring on board without any specific size limitations in your carry-on:

• Chips, Crackers, Cookies: These are great for munching during your journey. Whether it’s a bag of potato chips or a box of cookies, feel free to pack them.
• Sandwiches, Wraps: You can also pack your favorite sandwiches and wraps. Just be mindful of any strong smells that might be off-putting to fellow passengers.
• Granola Bars, Nuts, Trail Mix: These options are not only healthy but also easy to pack and eat on the go.
• Candy, Chocolate: Satisfy your sweet tooth by bringing some candy or chocolate along for the ride.
• Fresh Fruit (for domestic flights): You can take along some fresh fruit, provided you’re flying domestically. Remember to choose options that are easy to eat.

Liquid or Spreadable Foods — Limited

Some snacks that are liquid or spreadable have restrictions due to security regulations:

• Yogurt, Pudding: These creamy delights are considered liquids and must be packed accordingly.
• Peanut Butter, Hummus: Your favorite spreadables count too. Just make sure they meet the 3-1-1 requirements.
• Dips, Sauces, Dressings: Any form of dip or sauce is also classified as a liquid, so keep that in mind when planning your snack bags.

For all the above items, they must be 3.4 ounces (100 ml) or smaller and fit within your quart-size liquids bag if they are part of your carry-on luggage. This ensures compliance with TSA regulations.

International Flights

While you might be allowed to bring food through security on international flights, it’s crucial to be aware of customs rules at your destination. Many countries have strict regulations regarding the import of fresh foods, such as fruits, meats, or dairy products. Make sure to check these regulations before packing any perishable items to avoid potential fines or food confiscation upon arrival.

Being well-informed about your airline’s policies is crucial to avoiding any last-minute surprises at the boarding gate. Remember, prohibited items remain off-limits. Despite some leniency with certain liquid items, flammable, sharp, or dangerous objects are strictly forbidden in carry-on luggage. This includes weapons, explosive materials, and sharp items like knives and scissors.

To ensure a smooth travel experience, always check the TSA’s prohibited items list before you pack. By keeping these essential points in mind, you can enhance your journey and enjoy a hassle-free trip for you and your family. Safe travels!