Along with death and public speaking, the fear of flying is the most common phobia in America. The only thing is a slim portion of people are ever called upon to speak publicly and you won’t be around for your own death, but most people need to fly at least a few times in their lives.
The fear of flying is particularly tricky in that it manifests in many different ways (from mild anxiety to outright panic attack); it can come on at any point in a person’s life; or it can wax and wane in a person’s life depending on other coexisting factors.