I don’t know about most of their routes but likely most of their long hauls.
Only 20% of their fleet today are 757s and 767s (and they are the largest operator for both), but they are also the largest operator for the Bombardier/Airbus A220 — my favorite short haul plane, which is an engineering marvel and a new design.
A lot of the MDs were from the Northwest Airlines days which they merged with. I used to fly NWA and the cabins were never inspiring but the points never expired and were among the best in the industry.
Only 20% of their fleet today are 757s and 767s (and they are the largest operator for both), but they are also the largest operator for the Bombardier/Airbus A220 — my favorite short haul plane, which is an engineering marvel and a new design.
A lot of the MDs were from the Northwest Airlines days which they merged with. I used to fly NWA and the cabins were never inspiring but the points never expired and were among the best in the industry.
https://en.m.wikipedia.org/wiki/Delta_Air_Lines_fleet