Hi,
I have flown back home from Cleveland Clinic after surgery on two occasions. My wife accompanied me both times, and for the most part the flights were incident-free. We got assistance from the airport staff handling wheelchair support, and were amongst toe first to board the planes. No issues either time. However, I will say this, after they release you from the hospital, they strongly urge that you stay locally in Cleveland for the weekend as a precaution. (Usually when they release you on a Friday). Well, on one of my return flights, I think that they released e too early. After I got home, within 24 hrs I was rushed to a local hospital due to requiring more drainage of fluids, I was having a difficult time breathing. They actually released me a little early so I would be home for Christmas, instead of a hospital. I pushed that issue, so, that would mostly fall on me.
So, best advise from me, flying is fine, as long as you are not afraid to ask for assistance, and let them wheel you around. Just make sure you feel up to the flight and get the OK from the hospital releasing you.
Cheers,
Rob