Hello @jodev68, My PMR is in remission but when it was active I didn't do any long distance traveling. There is another similar discussion that you might want to join to learn what others have shared:
-- Traveling with PMR: https://connect.mayoclinic.org/discussion/traveling-with-pmr/

I'm not sure but I think @dadcue has mentioned traveling outside of the country and may have some travel related suggestions when you have PMR.