Only in small servings: can you bring unopened drinks through TSA in your carry-on. Yes, but only if each container is 3.4 oz or less. A full soda can does not get a pass just because the seal is unbroken.
This trips up more travelers than almost any item on this list. A sealed can of Coke looks like the safest thing in a bag. TSA officers still pull thousands of them off the belt every week.
The carry-on rule
Every liquid in a carry-on bag has to be 3.4 oz or 100 ml or smaller. It also has to fit inside one clear, resealable quart bag. A 12 oz soda can and a full bottle of water are both over that limit.
It does not matter that the can is sealed at the factory. The rule reads the size on the label, not the seal. Small drink pouches under 3.4 oz, like a kids juice box, usually clear the checkpoint fine.
The full policy for every liquid sits on the TSA liquids rule page. It states the same 3.4 oz cap. The short version of can you bring unopened drinks through TSA past that size is no.
Buy your drink after security
The easiest fix skips carrying a full drink through the line at all. A beverage bought from a shop past the checkpoint has no size limit. It never has to clear the X-ray as a liquid you brought from home.
That is also why gate shops sell soda and coffee at a markup. You are paying to skip the argument entirely. It answers can you bring unopened drinks through TSA without any argument at the belt.
The checked bag rule
Checked bags carry any amount of any drink. A full case of soda travels fine. A stack of water bottles or a six pack does too.
TSA sets no size cap once a bag leaves the counter. The one real catch is pressure and cold. A carbonated drink may hiss or foam during rough handling.
A cold hold can push a full bottle to crack its own seal. Wrap cans in a sealed bag before you check them.
| Situation | Carry-on | Checked |
|---|---|---|
| Unopened 12 oz soda can | No, over 3.4 oz | Yes, no limit |
| Drink under 3.4 oz | Yes, in the quart bag | Yes, no limit |
| Duty free bottle in a sealed bag | Yes, with a recent receipt | Yes, no limit |
What actually happens at the checkpoint
Officers are consistent about full cans bought before the line. They get pulled. You either surrender the drink or step aside to finish it.
Empty bottles, drink powders and small juice pouches sail through without comment. The gray area is duty free.
TSA policy allows a sealed bag with a recent receipt to carry a duty free drink through a connecting US line. Forum reports show officers apply that rule unevenly. A bag that looks opened gets confiscated anyway.
International and duty free differences
Flying into the United States, most alcohol and other drinks bought duty free travel fine in a checked bag. The 3.4 oz carry-on cap only bites at a US security line. A bottle bought after landing and checked straight through skips the issue.
Outside the US, most countries run their own version of the 100 ml rule. A full drink bought before a screened connection can still get flagged the same way.
Practical packing
The simplest habit is an empty bottle. Fill it at a fountain or hand it to a barista after the line. A TakeToday collapsible water bottle folds flat in a bag until it has something in it.
A sturdier steel bottle works the same way for coffee or a cold drink. Check a liquids packer tool against your exact bottle first. Some tall bottles read as over 3.4 oz even half full.
A single quart bag holds every small drink and toiletry together. A screener checks it in one glance instead of pulling each item out.
If you are checking a case of soda or beer, a padded WineSkin bottle protector bag keeps a burst can from soaking the rest of the suitcase. A small snack from the same gate shop avoids the liquid question altogether.
See the full can I bring list for anything else in the same bag. The liquids in checked baggage page covers the hold side in more depth. The officer at the line has final say on anything unusual, drinks included.
The bottom line
So, can you bring unopened drinks through TSA? Only when each container holds 3.4 oz or less and fits the quart bag, or when you buy it past the line. Checked bags carry any amount of any drink, seal or no seal, aside from the ordinary risk of a can popping under pressure.
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