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Official website of the Department of Homeland Security

Transportation Security Administration

CO2 Cartridge

Carry On Bags: 
Checked Bags: 

Except for personal medical oxygen cylinders, you can only carry an EMPTY compressed gas cylinder onboard a plane. To be permitted (in either carry-on or checked baggage), it must be clearly visible to the TSA officer that the cylinder is empty.


The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.