Dear Marjorie, Good luck with your flight(s)! Last summer I flew from Boston to Chicago and then non-stop to Honolulu. I took food with me, plus water (in small bottles) -- and I don't have PD. I was very grateful for the food (sandwiches and home made brownies) and also for the water, since it alleviated the dehydration. Wish I could advise about PD, whether to talk to the airline, etc., but I can't. If you can get up and move around, I'd recommend doing as much as possible. On the Honolulu flight, coming and going, I walked around, did exercises in a space at the back, sat on the floor and stretched, etc., etc. It all helped. Best of luck, Delda White ([log in to unmask])