My understanding based on what I have read is that people with Ebola have gotten on airplanes and flown to other places, this is not the same as saying that transmission of the virus now occurs via droplet by air from one person to another.
I have not read that a person who was previously uninfected became infected after air travel with a sick individual. If this is the case it should be the top breaking headline in every world news outlet.
If you read “The Hot Zone”, one of the main fears was a mutation that could make ebola airborne.
Foxnews reported this morning that the US Doctor who self-diagnosed caught it from someone on the airplane from Nigeria to Liberia.
Beyond that its all speculation. Perhaps the infected person sneezed on him, threw up on him, or bled on him. It would still have to have gotten into his bloodstream through a cut, eyes, or mouth.
Other medical personnel are catching it from patients they are treating. Perhaps its a little easier to catch than they admit.