I was flying home from Sevilla with Austrian Airlines, and on their website they state, that it is not allowed to bring any camping stove, neither in hand- nor in checked luggage. I don't know if they actually check/enforce that, but I wanted to be on the safe side.
I ended up shipping the stove separately by post, the ladies in the post office told me that it is also not technically allowed, since it is also shipped by plane, but if there is no remainder of gasoline on it, and I tell them it's a tool or something it would probably be fine.
I figured I'd rather have a package with my stove sent back to Sevilla than miss the flight or have to throw it in the trash at the airport in the worst case.