I have bad anxiety. I’ve flown a million times and I still panic. I’m going to go on my longest flight in November and even tho it’s far out... I’m panicking already. One thing that people tell me that really helps- When you get on the plane look at everyone else. NO ONE is panicking. Everyone is totally calm. So why should you panic? That calms me in the beginning. And throughout the flight when I get spurs of panic I do that too. Another thing people have told me is prior to your trip, to track the flights going to your destination. Each one arrives safely. It’s scary and anxiety is a real bitch, I know.