Delta Air Lines will add the state-of-the-art Boeing 737 MAX aircraft to its fleet, as the airline continues to refresh its fleet to elevate the in-flight customer experience while improving fuel efficiency.

Delta is ordering the largest model in the MAX family, the 737-10, which will begin delivery in 2025. It will be powered by the next-generation LEAP-1B engines manufactured by CFM International, a company jointly owned by GE and Safran Aircraft Engines. The aircraft will be 20%-30% more fuel efficient than the retiring Delta planes it will replace, making the agreement an important step in Delta’s journey toward a sustainable future for aviation.

“The Boeing 737-10 will be an important addition to Delta’s fleet as we shape a more sustainable future for air travel, with an elevated customer experience, improved fuel efficiency and best-in-class performance,” said Ed Bastian, Delta’s chief executive officer. “These new aircraft provide superior operating economics and network flexibility, and the agreement reflects our prudent approach to deploying our capital.”