Originally Posted by BenjaminNYC
Really? Interesting. Tell me more. They don't use their intl policies, do they? Something in between?
There is no policy of complimentary upgrades. For both DL and NW it's 7,500 miles for full coach (Y, B) fares and 15,000 on DL for B, M, H, Q or K fares and 17,500 miles on NW for other select coach fares (all but lowest).