Make sure it's empty, clean, and packed in checked lugage. Don't ask, don't tell. Last time I flew they took the empty canister but didn't mind the stove (they never saw they pump, which they proably wouldn't like either). For all the flights on the trip after that I didn't say a word, when the counter people asked if I had a stove I sid no, figuring if they found it I'd just tell them I assumed they meant a gas canister. At the checked luggage security stations we went through (the new federal peeps) they saw the stove but didn't care. I think the airlines themselves see the greatest liability, the security people don't see it as a risk. Of course they are fully in their right to keep you from flying with them. Have fun, good luck.