Asking the difference between airline and corporate epitomises the question "how long is a piece of string". Over the years I have: paid for the fuel, catering, hotels, Jepps subs, medication for the boss and crew, maintenance away from base, airline tickets and god only knows what else using my credit cards. I have done or helped with the washing up, cleaning the aircraft and loading the baggage, planned and filed for the trip, organised ground transport and the list goes on and on. Having said that, I love it. I have always been reimbursed (except for one unfortunate freelance episode) and have enjoyed some fantastic relationships with owners/principles. I have operated on AOC where all was organised for me and private/corporate where the burden of responsibilty was far greater. Over thirty years no two jobs have been the same. You won't experience this in the airlines, be careful what you wish for.