Commercial jets are pressurized to 8,000ft elevation. This reduced cabin pressure causes all kinds of funky things to your body and especially joints. If you have preexisting body aches, arthritis, past injuries, inflammatory conditions or other auto-immune diseases it’s quite possibly exacerbating an underlying condition.

As others said, talk to a doctor or two.

Nothing is wrong with you. Flying sucks.

Choose an aisle or window seat to your preference, bearing in mind that one of the solutions to body soreness when airplane traveling is standing up for 10 mins every 30-40 mins.

If you can swing it, fly first class, since the seats are wider and you can more easily shift your body weight.

E: typo

Does it only happen on planes? Maybe it’s just stress from fear of flying?

If it also happens on trains or long car rides it might be bad posture.

I’m about to have this issue in about 10 hours. Are you older than 30? Cuz I really started feeling the pain after 30. I recently bought an awesome inflatable pillow that keeps my head upright, so I can maybe possibly sleep instead of just fidgeting and suffering through the whole flight. I feel your pain, internet stranger.

Also, constipation. It’s so hard to shit the day after flying. Most people don’t seem to have this issue.

You might have some issues with one of your intervertebral discs. Go do a checkup just to make sure. Might catch it before it evolves into a bigger problem.