CP
I have had both hips replaced. first one in 2004, the next in 2012.
I was flying for Delta in '04, and went back to the line at 5 weeks.
Flying corporate now, went back at 4 weeks in '12.
I think my surgeon is excellent, and that might have something to do with the rapid recovery. If I am not too late in responding to your request for info, I would work on upper body strength a bit so that those first couple days you find it easier getting into and out of chairs (and the toilet).
The new hips are excellent. Amazing how nice it is to be able to put your socks on without pain.
Best of luck to you