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Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 102,617
However, some airlines (such as DL) don't seem to follow any of the standard sources and you need to check the miles on their own website. Differences compared to the great circle routing calculations are not unusual, although the deviations are usually small. Also, the distances according to DL occasionally change, so you can't necessarily go by previous experience.