I would never choose not to fly despite my fear of heights and general fear, my home country is only accessible by plane and to close it off due to my fears, to not be able to see my family, is not worth it.
It helps if you understand the way airplanes work (specifically all the safety mechanisms and the way each is designed with safety at a high priority)
Your chances of having a fatal accident in a car, or simply being on or near a road, are much higher than being a plane crash. So you should be more worried about going outside.
I have a horrendous fear of flying but managed to do 4 round trips in the space of a year although i m doubtful i ll ever make it out of Europe.
I find listening to music, shutting my eyes and generally doing my best to forget where i am is the only way I get through it. But like others have said you're more likely to die in a car crash so i suppose see it as the odds are in your favour.
Best thing to say after alien intervention prevented your fiery death.