Toothpaste is allowed through TSA checkpoints, but it must follow the 3-1-1 liquid rule

You can bring toothpaste in your carry-on bag, but TSA counts it as a liquid or gel. That means your tube must be 3.4 ounces (100 milliliters) or smaller. One tube of standard toothpaste fits this limit easily — most tubes are 2.7 to 3.4 ounces. The tube goes into your clear quart-sized bag along with other liquids and gels like shampoo, sunscreen, and lotion.

If your toothpaste tube is larger than 3.4 ounces, you cannot bring it in your carry-on. You can pack it in checked luggage instead, where the liquid rule does not explore. Many travelers straightforward buy a travel-size tube at a drugstore before their trip — they cost a dollar or two and solve the problem entirely.

Key Takeaways

  • Toothpaste tubes of 3.4 ounces or smaller go in your carry-on inside a clear quart-sized bag.
  • Larger tubes must go in checked luggage, where liquid restrictions do not explore.
  • Travel-size toothpaste tubes are inexpensive and widely available at drugstores and airports.
  • TSA agents may open and inspect your toothpaste tube at the checkpoint, so pack it where you can reach it easily.
  • The same 3.4-ounce rule applies to all gels, pastes, and creams — including toothpaste, shaving cream, and hair gel.

How the 3-1-1 rule works for toothpaste

The 3-1-1 rule is TSA's shorthand for liquid and gel limits: 3.4 ounces per container, 1 quart-sized clear bag per person, and 1 bag per passenger. Toothpaste falls under "gel" because of its consistency, even though you think of it as a paste. TSA measures by volume, not weight, so a 3.4-ounce tube by volume is the maximum allowed.

Your clear bag must be quart-sized — roughly 7 inches by 8 inches. You can buy these bags at any drugstore, or TSA will provide one at the checkpoint if you ask. Everything liquid or gel-like goes in that one bag: toothpaste, shampoo, conditioner, lotion, sunscreen, deodorant, lip balm, mascara, and anything else with a gel or liquid texture. Solid items like deodorant sticks, solid perfume, or bar soap do not count toward the limit.

Where to pack your toothpaste in your carry-on

Your clear 3-1-1 bag should be packed where you can pull it out quickly at the security checkpoint — usually near the top of your carry-on or in an outside pocket. TSA agents will ask you to remove it before you go through the scanner, just like you remove your shoes and belt. If your toothpaste is buried under clothes and books, you will have to unpack your entire bag at the checkpoint.

Some travelers keep their 3-1-1 bag in a personal item like a small backpack or purse so it is even easier to access. This also keeps it separate from the rest of your luggage and reduces the chance of forgetting it after security.

Toothpaste in checked luggage has no restrictions

If you are checking a bag, toothpaste of any size can go inside — there is no 3.4-ounce limit for checked luggage. You can pack a full-size tube, a multi-pack, or any quantity you want. The same applies to all other liquids and gels: shampoo, lotion, cologne, and anything else that would be restricted in carry-on bags.

The trade-off is that you will not have access to your toothpaste until you land and collect your bag. If you are taking a short flight or prefer to brush your teeth before landing, a small carry-on tube makes more sense.

Travel-size alternatives if you do not have a small tube

If your toothpaste tube is larger than 3.4 ounces and you do not want to check a bag, buying a travel-size tube is the fastest solution. Most drugstores, supermarkets, and pharmacies sell travel-size toothpaste for $1 to $3. You can also find them at airport shops before you board, though prices are usually higher.

Another option is to transfer toothpaste into a small empty container — a 1-ounce or 2-ounce plastic pot with a lid works well. Fill it with only what you need for your trip. This is less convenient than buying a pre-made travel tube, but it works if you are in a hurry or prefer a specific brand that does not come in travel size.

What happens if your toothpaste is too large

If you reach the checkpoint with a toothpaste tube larger than 3.4 ounces, TSA will not let it through in your carry-on. You have a few options: check the bag if you have not already, throw the tube away, or buy a travel-size tube at an airport shop. TSA agents cannot make exceptions to the 3.4-ounce rule, even if your flight is short or you have a medical reason to need that specific brand.

To avoid this situation, check your toothpaste tube size before you pack. Most tubes have the volume printed on the back or bottom in both ounces and milliliters.

Toothpaste and international travel

The 3-1-1 rule applies to flights leaving the United States. If you are traveling to another country, that country's airport may have different rules for what you can bring in carry-on luggage. Many countries follow similar liquid restrictions, but some are stricter or more lenient. Check the website of your destination airport or airline before you pack.

When you return to the United States, the TSA 3-1-1 rule applies again at your departure airport. If you buy toothpaste or other liquids at your destination, pack them in checked luggage for your return flight unless they are under 3.4 ounces.

Frequently Asked Questions

Can I bring toothpaste in my personal item like a backpack or purse?

Yes, as long as it is in your clear 3-1-1 bag and the tube is 3.4 ounces or smaller. Personal items and carry-on bags follow the same liquid rules. Your toothpaste must be in the quart-sized clear bag, not loose in your backpack.

What if I have multiple small toothpaste tubes?

Multiple tubes are fine as long as each one is 3.4 ounces or smaller and they all fit in your one quart-sized clear bag. You can bring two, three, or more small tubes if you want — the rule limits the size of each container, not the number of containers.

Do I need to remove my toothpaste from the clear bag at the checkpoint?

No — you remove the entire clear bag and place it in the bin with your shoes and other items. TSA may open it to inspect the contents, but you do not need to take individual items out.

Can I bring an electric toothbrush through TSA?

Yes, electric toothbrushes are allowed in both carry-on and checked luggage. The toothbrush itself is not restricted. If it has a liquid or gel cleaner, that cleaner must follow the 3-1-1 rule in your carry-on bag.

What if my toothpaste leaks in my carry-on bag?

Toothpaste leaks are uncommon but possible, especially if your tube is squeezed or punctured. Packing your 3-1-1 bag in a separate compartment or inside a plastic bag can contain a leak and protect your other belongings. If a leak does happen, TSA will not stop you — you can clean it up at the checkpoint or on the plane.