look on martin lewis’s site. its called money saving expert.com. follow the links to travel and flights. its brilliant
I Need A Cheap Flight From London Gatwick To Cork Ireland From The 25jan To The 29 Jan?
February 8th, 2010Can Anybody Explain Why A Flight From Europe To The Usa Takes About 120 Minutes More Than From Usa To Europe?
February 8th, 2010The air current may play a role as was mentioned by the others, but I also believe that different routes that the planes follow may play a role.
See, all airlines have their own specific route, specific height that they fly so as to avoid mid air collisions.
So the planes heading to USA are following a different predetermined route, that takes them a few extra hours for the above mentioned reasons.