You really are counting on a lot of things to go your way. First, tsa I would say you have 75 percent odds of being allowed thru , I would give you 60 percent odds of being allowed to board then you are at the mercy of the fa to either find a spot or to get it valet checked which can be done if you can get someone to do it which would be a favor. If you want to try make sure it is wrapped such that it will survive the underside of the plane because chances are that is where it will end up.