Are There Liquid Restrictions For Carry On Bags? | TSA Rules

Carry-ons follow TSA’s 3-1-1 rule: containers up to 3.4 oz in one quart bag, with medical and baby exceptions.

You get to the checkpoint, unzip your bag, and there it is: shampoo, face wash, sunscreen, a half-full water bottle you forgot about. Liquid rules can feel picky, yet they’re predictable once you know the pattern.

This page lays out what you can bring, what gets flagged, and how to pack so you’re not repacking on the floor while the line inches forward.

Liquid Restrictions For Carry-On Bags On U.S. Flights

For most travelers, the rule is simple: liquids, gels, aerosols, creams, and pastes in your carry-on must be in containers of 3.4 ounces (100 mL) or less, and they must fit inside one clear quart-size bag.

TSA describes this as the “3-1-1” rule: 3.4 ounces per container, 1 quart-size bag, 1 bag per passenger. The full wording is on TSA’s Liquids, Aerosols, and Gels rule.

There are a few carve-outs. Items tied to health needs and items for infants and toddlers can go over 3.4 ounces in reasonable amounts for your trip. Those items may need extra screening, so you’ll want them easy to reach.

What “Carry-on” Means In Practice

“Carry-on” includes anything that passes the checkpoint with you: your roller bag, backpack, tote, camera bag, and the small pouch you forgot was stuffed in a side pocket.

If it’s with you at screening, it’s treated the same way. One person gets one quart bag, even if they have two bags.

Why The Quart Bag Part Matters

Most delays happen because items are scattered. A quart bag keeps liquids visible and keeps the officer from hunting through your clothes.

Use a sturdy, resealable bag that closes fully. A flimsy zipper that pops open is a fast path to a messy bin and a slower line.

What Counts As A Liquid At The Checkpoint

TSA applies the rule to more than drinks. If it can smear, spread, pour, spray, or ooze, treat it like a liquid item for packing.

Common Items That Surprise People

• Peanut butter, hummus, salsa, yogurt, and other spreadable foods
• Gel deodorant, hair gel, pomade, and styling cream
• Liquid makeup, lip gloss, mascara, and some skincare balms
• Wet wipes that are soaked, plus travel-size hand sanitizer
• Aerosol sunscreen, hairspray, and body spray

When you’re unsure, pack it like a liquid. That single choice saves the “Is this allowed?” moment at the belt.

Solid Items That Usually Don’t Trigger The Bag Rule

Bar soap, solid deodorant, powder makeup, and dry snacks usually skip the quart bag step. They can still get a second look if they clutter the X-ray view, so keep them neat.

How To Pack Liquids So Screening Stays Smooth

The goal isn’t to pack a perfect bag. It’s to pack a bag that opens fast, shows what it needs to show, and closes without drama.

Step 1: Pick The Right Containers

Start with containers that are labeled 3.4 oz (100 mL) or less. A bigger bottle with a little liquid left can still be treated as oversize because the container is oversize.

If you decant products, use leak-resistant travel bottles. Tight lids matter more than fancy branding.

Step 2: Build One Quart Bag That Actually Closes

Lay your items out first, then load the bag flat. Put taller bottles along the edges and smaller tubes in the middle.

Try closing the zipper before you leave home. If it takes two hands and a prayer, trim the kit.

Step 3: Stage The Bag For The Belt

Keep the quart bag near the top of your carry-on or in an outer pocket. You want a clean motion: unzip, pull, place.

Some lanes ask you to remove the bag, some don’t. If you can grab it fast, you’re ready either way.

Step 4: Stop Leaks Before They Start

Air pressure shifts can push liquid out of loose caps. Before you travel, wipe threads clean, tighten lids, and put tape over caps that love to spin.

If you’ve had a spill before, put that bottle inside a small snack bag. It adds a second seal and keeps your quart bag cleaner.

Common Carry-On Liquids And How To Pack Them

Use this table as a packing check. It’s built around how items tend to be treated at screening, plus the simplest way to avoid a slowdown.

Item	Counts Toward Quart Bag?	Packing Note
Shampoo, conditioner, body wash	Yes	Travel bottles ≤3.4 oz; keep upright in quart bag
Toothpaste	Yes	Small tube; cap tight so it won’t ooze
Sunscreen lotion	Yes	Choose a 3.4 oz tube; wipe the nozzle before packing
Aerosol sunscreen or hair spray	Yes	Travel size; pack where it won’t get crushed
Liquid makeup, mascara, lip gloss	Often yes	Group in one pouch inside quart bag for speed
Peanut butter, dips, creamy spreads	Yes	Pack small portions; treat as a gel item
Contact lens solution	Yes	Use travel bottle; keep with lenses so it’s easy to show
Hand sanitizer	Yes	Small bottle; put it where you can grab it mid-trip
Perfume or cologne	Yes	Atomizer or mini bottle; seal it in a small bag if it leaks
Wet wipes (moist)	Usually no	Keep the pack closed; don’t soak loose wipes

Exceptions That Let You Bring Larger Liquids

Life doesn’t always fit into 3.4 ounces. TSA allows certain larger liquid items in carry-ons when they’re tied to health needs or feeding a child.

Liquid Medication And Health-Related Items

Liquid meds can go over 3.4 ounces when they’re needed for your trip. Tell the officer you have them before screening starts, and keep them separate so you can hand them over without digging.

TSA keeps details on what’s treated as a health item, plus screening notes, on its Medical items page in What Can I Bring?.

Pack liquid meds in their original container when you can. If you use a dosing bottle or syringe, tuck it next to the product so the kit reads clean on X-ray.

Baby Formula, Breast Milk, And Toddler Drinks

Formula, breast milk, and toddler drinks can be carried in amounts that make sense for your trip. Keep them easy to reach and expect a short pause while they’re screened.

If you travel with ice packs or gel packs to keep milk cold, plan for extra screening time. Pack them together so the officer sees one clear “baby feeding kit,” not scattered pouches.

Duty-Free Liquids Bought After Security

Items you buy after the checkpoint don’t face the 3-1-1 limit at that point because you’re already past screening. If you have a connection, keep duty-free liquids sealed and keep the receipt handy.

Rules can shift by airport and airline, so treat duty-free as “easy until it isn’t.” If you’re cutting it close, choose smaller bottles.

When You’re Better Off Checking Liquids

If you want full-size shampoo, a big bottle of sunscreen, or a special drink for your destination, checked luggage is simpler. The carry-on rule is the main choke point.

Checking liquids isn’t a free pass. Use tight caps, pad glass, and put spill-prone items in sealed bags. A leaky bottle can ruin a whole suitcase.

Quick Fixes For The Most Common Slip-Ups

Most problems are small and fixable. Here are the ones that pop up again and again.

You Forgot A Water Bottle

Empty it before you reach the belt. If it’s half full, it can be taken. After you clear security, refill at a bottle station.

Your Quart Bag Is Overstuffed

Pull out what you can live without on the flight: extra lotion, backup hair product, that “just in case” face mask. Move it to checked luggage if you have it, or toss it if you don’t.

You Packed Two Small Bags Of Liquids

Combine them into one quart bag. Keep the second bag empty in case you need it later for leaks, but don’t present two bags at screening.

You Don’t Know If A Food Is A Liquid

Ask yourself one question: can it spread on a cracker? If yes, pack it in the quart bag or check it.

Checkpoint Moves That Save Time

This table lists common screening moments and the cleanest response. It’s not about being perfect. It’s about staying calm and keeping your stuff moving.

Situation	What To Do	What It Prevents
Officer asks about liquids	Hand over the quart bag right away	Extra rummaging through your carry-on
Oversize liquid med in your bag	Declare it before the bin goes in	A surprise secondary check after X-ray
Baby feeding kit flagged	Keep bottles and cooling packs together	Multiple small pulls from the belt
Toiletries look cluttered on X-ray	Group them in one clear bag, laid flat	A bag search to sort similar shapes
Aerosol can shows up	Make sure it’s travel size and packed in quart bag	Bin pull for size verification
Leaking bottle found in bin	Wipe it, reseal it, move it into a small extra bag	Spill on your electronics or boarding pass

Packing Checklist For Carry-On Liquids

Run this list once the night before you fly. It’s short on purpose.

• All liquids, gels, aerosols, creams, and pastes are in containers ≤3.4 oz (100 mL)
• All liquid items fit in one clear quart bag that closes easily
• The quart bag sits near the top of your carry-on for a fast pull
• Liquid meds and baby feeding items are packed together and easy to declare
• Caps are tight, threads are clean, and spill-prone bottles are double-bagged
• Any drink you carry in is empty before you enter the line

Are There Liquid Restrictions For Carry On Bags? In One Sentence

Yes, carry-on liquids are limited to 3.4-ounce containers in one quart bag, with larger allowances for liquid meds and baby feeding items when you declare them at screening.