I flew to another country to have my Gastric Sleeve done, I has it done on the Saturday morning and flew home on Tuesday morning. I had 2 connecting flights and a total of 14 hours travel time, all was ok just very tiring and uncomfortable. I booked special assistance to take me from the check in desk to the plane and also help me off which was great. I would also suggest taking a pillow/cushion for the plane, wether that is to prop behind the base of your back to support stomach or as I used it quite a lot for, to hold against my incisions whilst coughing due to the air conditioning on board. Overall it wasn't the worst experience and definitely doable.