Fear of flying is a very common phobia, with an estimated one in 10 people experiencing flight anxiety. Fear of heights and dogs is quite common too, but so are fears of buttons, balloons and frogs. I've treated people with fear of a hundred different things.
Phobias are irrational and very difficult to treat with conventional methods. Hypnosis works because it works on an unconscious level, removing the negative emotion from the cause and then scrambling the patterns of fear that you have created.
If fear is spoiling the quality of your life, there is help out there.