Airplane paths

Hey all,
Is there anyway to create a path for an airplane to follow in game? I have a major airport on my route and would like to have air traffic and some airplanes moving in the background. Does anyone know how to make a path or if I can modify the path that's in game to do that?
Thanks!
Ken
Is there anyway to create a path for an airplane to follow in game? I have a major airport on my route and would like to have air traffic and some airplanes moving in the background. Does anyone know how to make a path or if I can modify the path that's in game to do that?
Thanks!

Ken