In researching, I have found that Delta is listing some strange ranges for it's 737-700/800 aircraft. The Boeing website says the max 2-class range is 3,115nm for the -800. Yet on the Delta website it lists it at 3,520 for a 2-class range? As well, Boeing lists the -700 (not the ER version) at 3,440 for 2-class range yet Delta has it listed much less at 2,789?I was thinking Boeings figures were at max weight but that would not explain the -700 range listed by Delta. Anyone know the whats and whys of this?

In your first example, it appears that Delta is quoting the -800 range in statute miles rather than nautical miles. That's typical in airline publications (schedules etc.) intended for the general public, rather than pilots. Most airline time tables that list the distance between city pairs show the distance in statute miles.Not sure why they list the -700 range as less than the Boeing figure.

Typo?Andrew

I wouldn't rely to much on Delta's info there always error....Carlitos Colon

That's also not taking into account their own ideas inside the airline's inner workings of what the "normal" range is, at what weight, and so on."Range" is complete rubbish, really. Range on a normal day, at a normal weight, with a normal pilot, flying a normal profile is X. Define 'normal' for every one of those. You can't, really...