Water Bottle
An empty water bottle is allowed in carry-on; a filled one is not, but can be filled after security.
Carry-on
Allowed with conditions
Checked
Allowed
Carry-on details
Allowed empty. An empty reusable water bottle can go through security in carry-on without issue — fill it at a water fountain or refill station after the checkpoint. A filled bottle counts as a liquid over 3.4 oz and will need to be emptied or surrendered at security.
Checked-bag details
Allowed filled or empty in checked baggage, with no liquid restriction.
Special instructions
Empty your bottle completely before the security checkpoint if traveling with it in carry-on.
Related rules
FAQ
- Can I bring a full water bottle through airport security?
- No — a filled water bottle counts as a liquid over the 3.4 oz limit. Bring it empty and fill it at a water fountain or refill station past the checkpoint.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-07-29
Final decision rests with the security officer at the checkpoint.