The main risk of flying after breast augmentation, or really any surgical procedure, is the possible development of blood clots in the legs, which could then travel to the lungs. Any surgery performed using a general anesthetic, as most breast augmentations are, raises the risk of blood clots. The best way for you to minimize this risk is to walk often after surgery, beginning on the day of the surgery itself. If you are taking a short flight, and have been walking frequently from the start, the risks are fairly low. If the flight is more than an hour or so, then you should absolutely plan to do some walking during the flight as well to promote circulation. Above all, you must discuss this with your own plastic surgeon.You shouldn't worry about sutures coming out as a result of flying. If you fly within a few weeks of the surgery, be sure to avoid heavy lifting or other strenuous activities.