Delta Air Lines, Inc. (NYSE: DAL) will order 10 additional A321 jets, bringing its total number of A321s on order from Airbus SE to 122.

The Atlanta-based carrier announced May 11 it agreed with Airbus SE to place an expanded order for 30 additional A321-200 aircraft and to defer 10 of the airline’s 25 A350-900 aircraft deliveries set for 2019-2020 by two to three years with additional delivery flexibility. The move is aimed at facilitating a quicker retirement of Delta’s MD-88 aircraft.

Delta…