I agree with everything that Sage said. Espescially about traveling wth someone. I've flown like 25 times (or over) and it's only happened once, and it was a little kid. I did jump up and run, and told the flight attendant I was having a panick attack, why I was (it was embarassing but...), she told me I HAD to be seated (seat belt signs were on), and luckily there was an extra seat on the plane, and I sat there for the remainder of time.
I always take Ativan when I fly. 2mg knocks me out and keeps me a LOT calmer about people getting sick, than me in my total sobriety.
I also ALWAYS travel with an IPod in case I need to block out unncessary sounds.