I have the same problem but with my left hip. I can't understand why it is just my left hip and never the right one.
I have to stop every hour for some minutes to get rid of it. At the same time I am not surprised.
People like me that fly a lot of long distance knows about the problems of spending a too long time in a flight chair. Your body is completely sour after 24 hours of flying and there is really a problem sitting. It hurts!
The chairs are damn nice compared to our bikes and they still give people aches and circulation problems.
The recommendation is to get out of the chair and do some exorcise quite often. It helps but the longer you go the more often you have to get up.
We are much worse of on our bikes. There will never be a bike that is as comfortable as a chair in the business class.
Young people will always be able to punish there bodies a bit more than us old folks.
Also think about what you do if you sit in a cinema or a meeting. You change your position at least every five minutes. Why do we believe that we should be able to sit in the same position for hours on a motorbike? I have accepted that I have to take a break once an hour to relax and maybe do a simple exorcise to be able to drive another hour. But his is only during days of traveling 10 -12 hours.
If you are very fit it will always help, no matter if you are in your business class seat or on your bike.