Originally Posted by cmhua777
It all depends on where you are going. JFK is just about always the cheapest to LHR, or for that matter Europe, but never the cheapest to NRT. Try LAX/SFO if you are going west over the Pacific. This logic makes perfect sense when you consider the distance flown.
Although you are technically right, JFK-NRT is actually not that much further than LAX-NRT because the planes fly more over the artic region than "straight-line" across the middle of the pacific. I think that JFK-Beijing(PEK) is actually only 600 or so miles longer than LAX-PEK.
And of course, as you all know, distance isn't the main consideration (albeit it is important) as say BOS-LGA fares are just as expensive as BOS-FLL or BOS-LAS many times.