Remember that there are way, way more fatal car accidents than plane accidents. The pilot makes plenty of flights every single day back and forth, and so do the flight attendants. Sit back, try to relax, listen to music when you get to cruising altitude. I’m usually really afraid of heights, but somehow it’s different when I look out the window of a plane. If it bothers you, though, don’t look out the window. Read a book, etc. The flight will be over before you know it.