You should wait at least 4 weeks before flying and take medications before flying to prevent blood clots in your legs that can travel to your lungs and cause death. Lifting luggage after a tummy tuck can compromise results and increase the risk of bleeding. Ideally, you should wait until you are healed and recovered before flying, that is about 6-8 weeks. By this time, your incision and muscle tightening will be well healed.