Couple of questions about BOS-LHR-BOS
Hi and thanks.
Was curious about the following:
When flying from BOS to LHR,
Can you tell me what dictates the flight path taken?
For example... when we flew BOS-LHR (Oct 17th) we took a path that led us up and over coming within 350 miles from Iceland at 39,000 feet (AA B777)
On the way home (Oct 25th) we took the same plane straight across at 32,000 feet the whole way until hitting land on the US side...
I was under the impression that higher was more effecient so if time permits could someone comment on what would cause the differences? Both planes were fairly full.
Thanks for any feedback.