About a year and half ago as a CFI, I just suddenly got the strange irrational fear of flying and esspecially going long distances from my home airport. It lasted about 6 mons. In fact I would not even take an airplane solo. In addition I was very nervous to fly with students that did not know how to land. I guess what happened, I got a middle ear infection from flying with water in my ear, and it cause to have vertigo while flying and get real nausious. Lucky I was with a student and we landed fine but, it scared me I guess. It took a while to snap out of it, then I went to the airlines and everything was fine. No more irrational fears. I have been to some long distance flights too LGA to XNA. That was a long one. Though keep in mind you can die in an airplane. Sometimes pushing back from the gate I'll think like "Hmmmm, is the last time push back from the gate?" But its all good.