I have never taken my machine when I have flown, but I definitely would not put it in checked baggage. When we flew back from Hawaii last year, the airline left our luggage sitting out on the tarmac in the rain for 4 hours while they waited for our plane to have a mechanical problem fixed. Everything in it was ruined along with the luggage. All of the new clothes we had purchased for the cruise were ruined. Delta did pay for replacing everything, but it was a hassle. I would not leave my machine at their mercy!