TSA Rules · Updated October 4, 2026
Can You Bring a Water Bottle on a Plane?
Yes. Any bottle passes the checkpoint once it is empty: metal, glass, or plastic, any size. Full bottles do not. Empty it before the line, fill it at the gate.
The rules
Carry-on essentials
Move through the airport fast and keep everything in its place from gate to gate.
Every bottle, one look
| Bottle situation | Carry-on | Checked | The rule |
|---|---|---|---|
| Empty bottle, any material | Yes | Yes | Size and material unrestricted once empty |
| Full or partially full | No | Yes | Liquid over 3.4oz cannot pass the checkpoint |
| Frozen solid water | Yes | Yes | Passes while rock solid; slush follows liquid rules |
| Filter or infuser bottle | Yes | Yes | Fine empty; the filter stays in |
The official word
Straight from TSA
“Each passenger may carry liquids, gels and aerosols in travel-size containers that are 3.4 ounces or 100 milliliters.”
TSA Liquids Rule · verified July 2026
Before the checkpoint
Three calls that matter
Refill stations sit past security in every major US airport. The bottle only needs to be empty for ten minutes.
Fully frozen water is a solid and passes screening. If it melts into slush in line, liquid rules apply.
Forgot to empty it? Finish it before the bin. A full bottle will not make it through.
FAQ
Quick answers
Can you bring an empty water bottle through TSA?
Can you bring a metal or glass water bottle?
Does frozen water count as a liquid?
Can you bring a full water bottle in checked luggage?
Sources: TSA: the liquids rule · TSA: What Can I Bring · Reviewed July 2026