Delta Air Lines has placed an order for 30 more Airbus A321neo planes to help meet its future fleet needs.

The new aircraft are in addition to the 125 A321neos that the carrier has already bought, bringing the total number of A321neos on order to 155.

“Adding these aircraft strengthens Delta’s commitment to replacing older fleets with more sustainable, efficient jets, and offering the best customer experience in the industry,” said Mahendra Nair, Delta senior vice president, fleet.

“Delta appreciates the extensive partnership with the Airbus team in support of our strategic growth plans, and we look forward to continuing to work together throughout the recovery and beyond.”

The next-generation Pratt & Whitney PW1100G turbofan engines will power Delta's A321neos.