When I saw it, my thought was something like, "Huh. I guess he hiked to the nearest airport and bought a plane ticket to New Jersey. Wait - do I really think he had a credit card and passport with him? Wait - where did the plane land? And was there really enough time for the flight to happen?" And then I decided to just watch the movie.

Having had time to reflect, clearly the real answer is that he caught a ride in a passing TARDIS.