Toothpaste is allowed through TSA security in both carry-on and checked bags

You can bring toothpaste through TSA checkpoints. The rule is straightforward: toothpaste counts as a gel or paste, which means it falls under the 3-1-1 liquid rule. Each container must be 3.4 ounces (100 milliliters) or smaller. A standard travel-size tube of toothpaste is usually 1 ounce or less, so most tubes you buy fit the limit without any problem.

If you are packing toothpaste in your carry-on bag, it must go in a single quart-sized clear plastic bag along with your other liquids and gels. You remove this bag at the security checkpoint and place it in the bin for screening. Toothpaste in checked luggage has no size limit — you can pack a full-size tube or multiple tubes without restriction.

The confusion often comes from the word "gel." Toothpaste is a gel or paste, not a liquid, but TSA treats it the same way for screening purposes. The 3.4-ounce limit applies to anything that flows, spreads, or is squeezable — that includes toothpaste, shampoo, conditioner, lotion, and similar products.

Key Takeaways

  • Travel-size toothpaste (3.4 ounces or smaller) goes in your carry-on bag inside the quart-sized clear plastic bag with other liquids and gels.
  • Full-size toothpaste tubes have no size limit in checked baggage and do not need to go in a plastic bag.
  • The 3-1-1 rule applies to toothpaste because it is a gel or paste, even though it is not technically a liquid.
  • TSA officers screen the plastic bag containing toothpaste at the checkpoint, so have it ready to remove from your carry-on.

How the 3-1-1 rule works for toothpaste

The 3-1-1 rule has three parts: containers must be 3.4 ounces or smaller, all containers go in one quart-sized bag, and you bring one bag per person. Toothpaste falls into this rule because it is a gel or paste. A standard travel-size toothpaste tube is usually 0.85 ounces to 1.5 ounces, which means it passes the size test.

When you pack your carry-on, place the toothpaste tube in the clear plastic bag along with your other gels and liquids — shampoo, conditioner, lotion, sunscreen, and similar items. Solid items like deodorant sticks, solid perfume, or a toothbrush do not go in the bag. At the checkpoint, remove the bag from your carry-on and place it in the security bin so the officer can screen it separately.

If your toothpaste tube is larger than 3.4 ounces, you cannot bring it in your carry-on. You can pack it in your checked bag instead, where there is no size limit. Many travelers pack a full-size tube in checked luggage and a travel-size tube in carry-on to have toothpaste available at both ends of the trip.

What happens if your toothpaste exceeds the size limit

If you arrive at the checkpoint with a toothpaste tube larger than 3.4 ounces in your carry-on bag, TSA will not let it through. The officer will ask you to either place it in checked baggage (if you are checking a bag) or discard it. You cannot keep it with you on the plane.

To avoid this situation, check the size of your toothpaste before you pack. Most tubes sold as "travel size" or "TSA-approved" are already under the limit. If you are unsure, measure the ounces on the packaging or ask at the store. Buying a travel-size tube before your trip is simpler than trying to figure it out at security.

Toothpaste in checked baggage has no restrictions

Checked baggage follows different rules than carry-on. You can pack toothpaste of any size in a checked bag — a full-size tube, multiple tubes, or even a bulk pack. There is no 3.4-ounce limit and no need to place it in a plastic bag. straightforward pack it normally in your luggage.

The only consideration is that toothpaste tubes can leak if they are not sealed properly or if the cap comes loose during handling. To prevent a mess, make sure the cap is tight and consider placing the tube in a small plastic bag or a toiletries pouch inside your checked luggage. This protects your other belongings if the tube does leak.

Other toiletries that follow the same rule as toothpaste

Many common toiletries are treated the same way as toothpaste under the 3-1-1 rule. Shampoo, conditioner, body wash, lotion, sunscreen, and liquid deodorant all count as gels or liquids and must be 3.4 ounces or smaller in carry-on bags. Toothpaste is not unique — it is straightforward one item in a larger category.

Items that do not count as liquids or gels include solid deodorant sticks, bar soap, solid perfume, a toothbrush, floss, and mouthwash tablets. These can go in your carry-on without size limits or the plastic bag. If you are unsure whether something is a liquid or gel, ask yourself whether it would flow or spread if the container tipped over. If yes, it probably falls under the 3-1-1 rule.

Frequently Asked Questions

Can I bring an electric toothbrush through TSA?

Yes. An electric toothbrush is a solid item, not a liquid or gel, so it has no size limit and does not need to go in the plastic bag. Pack it in your carry-on or checked bag. The battery is allowed in carry-on luggage. If you are concerned about the battery, place the toothbrush in a protective case to prevent accidental set up during the flight.

What if my toothpaste tube says "3.4 oz" but looks bigger?

Trust the label on the package, not how big it looks. TSA uses the stated volume, not the physical size of the tube. If the label says 3.4 ounces or 100 milliliters, it meets the limit. Tubes are often shaped to look larger than they are because of the packaging design.

Do I need to remove toothpaste from my bag at security?

Yes. You must remove the quart-sized plastic bag containing your toothpaste and other liquids and gels from your carry-on and place it in the security bin. The officer needs to screen it separately. This is part of the standard screening process at every checkpoint.

Can I bring toothpaste on a domestic flight and an international flight?

The TSA 3-1-1 rule applies to all flights departing from the United States, whether domestic or international. However, some countries have different rules for items arriving in their airports. If you are traveling internationally, check the rules of your destination country. For carry-on bags on the return flight, follow the rules of the country you are departing from.

Is whitening toothpaste treated differently than regular toothpaste?

No. Whitening toothpaste, gel toothpaste, and regular toothpaste all follow the same 3.4-ounce limit in carry-on bags. The active ingredients do not change the TSA classification. Pack it the same way you would pack any other toothpaste.