I'm 6'4 and I flew once to see family back home. It was a nightmare. I don't think I ever was able to settle well enough into my seat since my knees were always getting bumped (no fault of the fellow passengers when they pack us in like sardines). I'll never fly again. They'd have to sedate me to get me to fly. It's just too cramped. I've been on greyhound buses that are roomier.