When flying, you usually expect to pay more for greater distance. Flying from San Francisco to Los Angeles is a lot cheaper than to Tokyo. However, it seems that there's a point at which you pay more the closer you get... I was on United's site and, just for the hell of it, priced out a flight from Oakland airport to San Francisco. I believe the distance between the two to be roughly 12 miles as the crow, I mean the jet, flies. Those are some very expensive miles, check it out:
