Will they fit through the x-ray machine? Gotta get them past TSA first. I'm also wondering if they will fit in the overhead and if they do and you have a full flight will someone put something on top of your wheels. They definitely won't fit under the seat in front of you and it really depends if you are on US Airways mainline or a regional jet. They would probably fit in the overhead of an Airbus or Boeing, but if it's a regional jet there is a good chance you won't be able to carry them on board and then they will be at the mercy of the baggage handlers.