Who decides you can fly
Your treating team decides when it is safe to fly, based on how your recovery is going rather than a fixed date. Before discharge they check your wound, breathing, blood count and pain control, and they give you a discharge summary and, where needed, a fit-to-fly letter for the airline.
Book flexible or changeable tickets for the journey home. Recovery is sometimes faster than planned and sometimes a few days slower, and changing a fixed ticket can be stressful.
Typical waiting times
The times below are general patterns many doctors and airlines use. Your own timing may be different.
After keyhole (laparoscopic) surgery, such as gallbladder removal or many bariatric operations, flying is often possible after about a week once you are eating and walking well. After open abdominal surgery, the wait is usually longer, often around ten days or more. After heart surgery, including bypass and valve surgery, teams commonly wait about ten to fourteen days, and after angioplasty a few days. After hip or knee replacement, many patients fly home after about two weeks, once they walk safely with support. After spine or brain surgery, the timing depends on the operation and is decided by the surgeon. After cataract surgery, short waits are usual, but after retina surgery with a gas bubble in the eye you must not fly until the gas has gone, which can take several weeks.
Preventing blood clots
Recent surgery and long flights both raise the risk of blood clots in the legs (deep vein thrombosis), which can travel to the lungs. Ask your doctor whether you need compression stockings or blood-thinning injections for the journey. Drink water, avoid alcohol and sleeping pills on the plane, flex your ankles often and walk the aisle when it is safe.
Get urgent help if you have swelling or pain in one calf, sudden breathlessness or chest pain, during the flight or in the weeks after.
Arranging the flight
Tell the airline in advance if you need a wheelchair at the airports, extra legroom, or to travel with medical equipment. Some airlines ask for their own medical form after recent surgery, so check before you book. An aisle seat makes it easier to get up and walk. Long journeys can be split with an overnight stop if your doctor advises it.
Carry your discharge summary, medicine list and enough medicine for the journey and the first weeks at home in your hand luggage.