I'll be contacting the surgeon to see what he will say .. I'll let it develop (or not) over the next couple of days. I am prone to sinus issues so finding a time when I don't have some sort of issue can be a problem. I have had 4 friends who had surgery with this surgeon, all travelled and none had issues. I think your oxygen levels can be depleted when you are flying but unless you have underlying heart or lung issues, it shouldn't be an issue. They do monitor blood oxygen levels before, during and after surgery and if they have returned to normal, I'm not sure what the issue with flying is. I am scheduled to come back after one week.