Do the crossword puzzle in the in-flight magazine. Basically, since the problem is in your imagination, you have to engage your imagination elsewhere. Now I believe I will never fly again. It is true that if you are in an airplane crash, the chances are good that you won't survive. In this sense, a car or even a pogo-stick can seem preferable.
Air accidents are very rare.
But most people say no, and they take the small chance that air travel entails. You have always survived before, and the odds are extremely good that you will survive again. You might want to prepare yourself for this moment with some meditation, prayer, or deep breathing exercise, whatever works for you. Or, you may want to ask your doctor for medication to take a half hour before departure. Catching a fear from someone else is indeed possible.