Originally Posted by
ijgordon
Well, the difference on JFK-LHR and JFK-LAX is not that great, maybe a half hour. But the difference on LHR-JFK vs. LAX-JFK is huge, LHR is almost twice as long. LHR is 40% further by mileage.
Of my dozens if BIS on these routes...
JFK - LHR = ~3451 miles, varies between about 7 and 8 hours
JFK - LAX = ~2475 miles, varies between 5h45m and about 6h30m
LAX - JFK = ~2475 miles, varies between 4h20m and ~5h IME
JFK - LHR = ~3451 miles, varies between about 5h50 and 6h45m
It really comes down to the wind...vice distance...and only in extreme circumstances has LHR JFK taken almost 2x the LAX JFK flight.