Scuba Diving Tank
Scuba tanks are only allowed on planes if completely empty with the valve open or regulator removed; pressurized tanks are prohibited entirely.
Carry-on
Allowed with conditions
Checked
Allowed with conditions
Carry-on details
Allowed with conditions. A scuba tank may travel in carry-on only if it is completely empty of compressed gas, with the valve left open (or the valve/regulator assembly removed) so it's clearly visible to a TSA officer that there's no pressure inside. In practice, most divers check the tank instead because of its size and weight.
Checked-bag details
Allowed with conditions. The same rule applies in checked baggage: the tank must be fully empty and visibly de-pressurized, with the valve open or disconnected. A pressurized or even partially-filled tank is treated as hazardous material and is not allowed in checked baggage at all.
Special instructions
Never fly with a pressurized or partially-filled tank — it's regulated as hazardous material once it holds gas above roughly 29 psig, and it will be refused at check-in or security. Have your tank emptied at a dive shop before your trip and leave the valve open for inspection. Airline-specific policies on carrying dive tanks vary, so confirm with your carrier ahead of time.
FAQ
- Can I fly with a full scuba tank?
- No. Pressurized or partially-filled tanks are treated as hazardous material and aren't allowed on planes at all, in carry-on or checked baggage. The tank must be completely empty with the valve open before you fly.
- How do I prove my scuba tank is empty at security?
- Leave the valve open, or remove the regulator/valve assembly entirely, so airline staff or the TSA officer can visually confirm there's no residual pressure.
Related items
Sources: FAA — PackSafe (Hazardous Materials), TSA — What Can I Bring? · Last verified: 2026-07-30
Final decision rests with the security officer at the checkpoint.