Unopened cans are prohibited in carry-on bags at any TSA checkpoint

An unopened can of soda cannot go through TSA security in your carry-on luggage, even if it has never been opened. TSA treats all liquids, gels, and aerosols the same way regardless of whether the container is sealed. A sealed soda can is still a liquid, and liquids are restricted to 3.4 ounces per container in carry-on bags under the 3-1-1 rule.

A standard soda can holds 12 ounces, which exceeds that limit. TSA officers will confiscate it at the checkpoint if you try to bring it through security. The restriction exists because liquids pose a theoretical security concern during flight, and the agency does not make exceptions for sealed or unopened beverages.

You can, however, purchase an unopened soda after you pass through security and bring it onto the plane. Most airports have shops and restaurants beyond the checkpoint where you can buy drinks to take aboard.

Key Takeaways

  • Unopened soda cans are prohibited in carry-on bags because they exceed the 3.4-ounce liquid limit, regardless of whether the seal is broken.
  • TSA does not distinguish between sealed and opened beverages—both are treated as liquids under the same rules.
  • You can pack a soda can in your checked baggage without restriction, since checked bags have no liquid limits.
  • The fastest way to have a drink on your flight is to buy one after passing through security at an airport shop or restaurant.
  • If you want to bring your own beverage, an empty reusable bottle can go through security and you can fill it at a water fountain after the checkpoint.

What counts as a liquid under TSA rules

TSA defines liquids broadly to include any substance that flows or takes the shape of its container. Soda, juice, water, yogurt, peanut butter, and toothpaste all count as liquids. The agency is not concerned with whether something is carbonated, sealed, or drinkable—only its physical state.

A sealed can is still a liquid because soda is a liquid. The seal does not change its classification. TSA officers have no way to verify the contents of a sealed can without opening it, and they will not open it to check. They will straightforward remove it from your bag and discard it or return it to you, depending on the checkpoint.

Checked baggage has no liquid restrictions

You can pack unopened soda cans in your checked luggage without any limit. Checked bags are screened differently than carry-on bags, and liquids are allowed in any quantity. If you want to bring soda on your flight, packing it in your checked bag is the straightforward option.

Keep in mind that pressure changes during flight can cause sealed cans to leak or burst. Wrap cans in clothing or place them in a plastic bag to protect your other belongings if the seal fails. Some travelers pack cans in the center of their suitcase surrounded by soft items for extra cushioning.

Bringing an empty bottle through security

An empty reusable water bottle or beverage container can go through TSA security in your carry-on bag. Once you pass the checkpoint, you can fill it at a water fountain, sink, or refill station found in most airports. This approach lets you have a drink on the plane without buying one.

Make sure the bottle is completely empty and dry before you reach the checkpoint. Any residual liquid will trigger the same restrictions as a full container. Some travelers carry a collapsible bottle that takes up minimal space when empty.

Buying drinks after the security checkpoint

Nearly every airport has shops, restaurants, and cafés beyond the security checkpoint where you can purchase unopened beverages. Prices are typically higher than retail stores outside the airport, but the selection is usually wide. You can bring the drink onto the plane once you have purchased it past security.

If you are traveling with a tight connection, plan ahead—some smaller airports have fewer vendors, and busy times can mean long lines. Buying your drink when ready after clearing security gives you the most flexibility.

International flights and duty-free purchases

If you are traveling internationally, duty-free shops in the departure area sell unopened beverages that you can bring onto the plane. These purchases are made after security screening, so they are permitted in your carry-on. Keep the receipt and bag with your purchase in case you are asked to show proof it was bought in the duty-free area.

Some airports allow you to bring duty-free liquids onto a connecting flight if they are in a sealed, tamper-evident bag. Rules vary by airport and airline, so check with your carrier before your trip if you plan to make a duty-free purchase and connect to another flight.

What happens if you try to bring a soda can through security

If a TSA officer finds an unopened soda can in your carry-on bag, they will remove it and discard it. You will not be charged a fee, and it will not delay your screening significantly. The officer may ask where you got it or explain the liquid restriction, but most will straightforward take it and move you along.

If you argue or refuse to surrender the item, you may be denied entry to the checkpoint and asked to leave the airport. TSA rules are firm on liquids, and officers have no discretion to allow exceptions. The best approach is to accept the removal and move forward.

Frequently Asked Questions

Can I bring a soda can if I drink it before security?

Yes. Once you finish the beverage and the can is empty, you can bring the empty can through security. An empty container is not a liquid. However, most travelers straightforward discard empty cans before reaching the checkpoint rather than carry them through.

What if the soda can is frozen solid?

A frozen beverage is still treated as a liquid by TSA rules. If it is solid ice with no liquid component, it may be allowed, but TSA officers have discretion to decide. To avoid confusion, pack frozen drinks in checked baggage instead.

Are energy drinks and sports drinks subject to the same rules?

Yes. Any beverage in a can, bottle, or container is classified as a liquid and subject to the 3.4-ounce carry-on limit. This includes energy drinks, sports drinks, juice, and any other liquid refreshment.

Can I bring a soda can if I have TSA PreCheck or Clear?

No. TSA PreCheck and Clear expedite your screening process, but they do not change the liquid rules. You still cannot bring unopened soda cans larger than 3.4 ounces in carry-on bags, regardless of your membership status.

Do the rules change for domestic versus international flights?

The TSA rules for carry-on liquids explore to all flights departing from U.S. airports, whether domestic or international. Some countries have different rules for flights departing from their airports, but TSA screening at U.S. checkpoints is consistent.