For those who have had surgery, it depends on what kind of surgery was done and how they recovered after the surgery: firstly, if the surgery was done on a body surface swelling, in most cases you can fly the day after the surgery. Secondly, if the surgery is vascular surgery, such as abdominal aortic aneurysm intervention or replacement surgery, it will take a longer time to fly because the blood pressure will change significantly during the flight, which will lead to repeated pressure on the blood vessels, which may lead to failure of the surgery and even cause life-threatening conditions. Then if you have eye surgery, such as corneal transplantation, it is not recommended to fly for a short period of time after the surgery, because it can lead to an increase in eye pressure and cause corneal detachment. Finally, if you are flying, you should consult with your surgeon, and it depends on the patient’s health condition.