Unopened cans are allowed through TSA checkpoints in carry-on bags, but only if the contents are not prohibited

An unopened can passes through TSA security the same way an opened one does: the container itself is not the issue. What matters is what is inside. TSA does not ban cans because they are cans. TSA bans certain liquids, gels, and aerosols — and many canned foods fall into those categories.

If your unopened can holds a solid food (beans, vegetables, fruit), it will pass through security in your carry-on bag. If it holds a liquid or gel (soup, sauce, peanut butter, frosting), it will not, because those are subject to the 3.4-ounce liquid rule. The TSA officer at the checkpoint will not open your can to check. They will look at the label, ask what is inside if the label is unclear, and wave you through or ask you to put it in your checked bag.

Checked baggage has no liquid restrictions, so any unopened can can go there regardless of contents.

Key Takeaways

  • Unopened solid-food cans (beans, corn, fruit) are allowed in carry-on bags with no restrictions.
  • Unopened cans of liquids or gels (soup, peanut butter, frosting, sauces) must follow the 3.4-ounce liquid rule and will be confiscated if they exceed that size.
  • Any unopened can, regardless of contents, is allowed in checked baggage.
  • TSA officers determine what counts as a liquid or gel by looking at the label and the product's consistency, not by opening the can.

How TSA decides if a canned product is a liquid

TSA uses a straightforward test: if the product flows or spreads, it counts as a liquid or gel for security purposes. This includes anything thicker than a solid but thinner than a rock — peanut butter, frosting, hummus, and soup all count. Canned vegetables, beans, and fruit do not, because they are solids suspended in liquid that you drain before eating.

The label on the can usually makes this clear. A can labeled "black beans" or "peaches in syrup" will pass. A can labeled "tomato soup" or "refried beans" will not, because refried beans are a paste. If you are unsure, read the ingredient list or the product description. If the TSA officer is unsure, they may ask you what it is.

Size matters only for liquids and gels. A 15-ounce can of soup will be stopped at security because it exceeds 3.4 ounces. A 15-ounce can of corn will not be stopped, because corn is a solid.

What happens if your can is confiscated

If a TSA officer determines your unopened can is a prohibited liquid or gel, you have three choices: throw it away, go back to the ticket counter and check it, or leave it with the officer. Most travelers throw it away because going back to check a bag takes time and may cause you to miss your flight.

You cannot open the can at security and eat the contents to get around the rule. TSA will not allow that. Once a can is flagged, it is flagged.

If you want to bring a canned liquid product on your flight, pack it in your checked bag instead. There is no size limit for liquids in checked baggage.

Canned foods that will pass through security

Solid or semi-solid canned foods that are clearly not liquids will pass through carry-on security without issue. These include canned vegetables (corn, green beans, carrots), canned fruits (peaches, pineapple, mandarin oranges), canned beans (black beans, kidney beans, chickpeas), canned fish (tuna, salmon), and canned meat (chicken, ham).

The key is that these products are recognizable as solids. If you open the can, you will see distinct pieces of food, not a uniform paste or soup. TSA officers know the difference and will not hold you up over a can of green beans.

Canned foods that will not pass through security in carry-on

Canned products that are liquids, gels, or pastes will be stopped if they exceed 3.4 ounces. This includes canned soups, canned chili, canned peanut butter, canned frosting, canned hummus, canned refried beans, canned baby food, and canned pet food (if it is a paste or gel). Canned sauces, gravies, and spreads also count as liquids or gels.

If the can is 3.4 ounces or smaller, it may pass, though TSA officers have discretion and some may still stop it. A standard soup can is 10 to 15 ounces, so it will not pass. A small sample can might, but it is not worth the risk.

Bringing canned drinks through security

Canned beverages — soda, juice, beer, energy drinks, coffee — are liquids and subject to the 3.4-ounce rule. An unopened can of soda will be confiscated at security if it is larger than 3.4 ounces, which all standard cans are. You cannot bring a full can of soda through the checkpoint in your carry-on bag.

You can buy canned drinks after you pass through security, in the airport terminal. You can also pack canned drinks in your checked bag with no restrictions.

International flights and canned goods

TSA rules explore to flights departing from the United States. If you are flying internationally, the rules of the country you are departing from may differ. Most major airports follow similar liquid rules, but some are stricter. Check the security rules for your departure airport before you pack.

If you are connecting through a U.S. airport on an international flight, TSA rules explore at that connection point. If you buy a canned drink in a foreign airport and try to bring it through a U.S. checkpoint during a connection, it will be confiscated.

Frequently Asked Questions

Can I bring an unopened can of soup in my carry-on bag?

No. Canned soup is a liquid and exceeds the 3.4-ounce limit. TSA will confiscate it at security. You can pack it in your checked bag instead, where there is no size limit for liquids.

What if my unopened can is smaller than 3.4 ounces?

A liquid or gel product smaller than 3.4 ounces may pass through security, but TSA officers have discretion. A very small sample can of soup might pass, but a standard can will not. If you want to be certain, pack it in checked baggage.

Will TSA open my unopened can to check what is inside?

No. TSA will look at the label and ask you what is inside if the label is unclear. They will not open the can. If they cannot determine from the label whether it is a solid or liquid, they may ask you to describe the contents or may confiscate it to be safe.

Can I bring canned peanut butter through security?

No. Peanut butter is a gel and subject to the 3.4-ounce liquid rule. A standard jar or can of peanut butter will be confiscated. Pack it in your checked bag instead.

Are canned vegetables allowed in carry-on bags?

Yes. Canned vegetables like corn, green beans, and carrots are solids and are allowed in carry-on bags with no restrictions. TSA will not stop you over a can of vegetables.