Delta plans fleet growth with Boeing 737 Max 10 and 787-10 to boost efficiency

Delta Air Lines is set to continue its long-running fleet modernization and upgauging effort with the introduction of Boeing's 737 Max 10 and 787-10 aircraft. The airline plans to replace older, smaller jets with these larger, more capable models to achieve improved operational efficiency and increased passenger capacity, executives confirmed during a quarterly earnings call in July 2026. This approach follows more than a decade of strategic upgrades replacing regional jets and aging McDonnell Douglas models with newer aircraft.

The 737 Max 10 will mark the first step in this new phase. Originally ordered in 2022 with deliveries expected to start in 2025, certification delays have pushed the aircraft's arrival to 2027. Delta CEO Ed Bastian indicated that the airline anticipates receiving up to 27 Max 10s in that year. The Max 10, seating roughly 190 passengers in a two-class configuration, will replace smaller Boeing 717s and 757s currently in the Delta fleet, offering better capacity and efficiency for domestic routes.

Boeing has signaled that the Max 10's certification will closely follow that of the Max 7, with the latter possibly being approved by the U.S. Federal Aviation Administration imminently. Other U.S. carriers like Alaska Airlines, American Airlines, and United Airlines have also invested in the Max 10 to upgrade their fleets, underscoring the type's anticipated impact on the industry. Canadian carrier WestJet is expected to be the first to take delivery of the Max 10 overall.

Looking further ahead, Delta plans to integrate 30 Boeing 787-10 aircraft starting in 2031. These widebody jets will primarily replace Delta's existing Boeing 767s—both the 300ER and 400ER variants—especially on transatlantic operations. Commercial chief Joe Esposito emphasized the efficiency gains, highlighting that the 787-10 offers a larger premium seating proportion and notably greater cargo capacity compared to the 767 models.

Delta's 767 fleet currently seats between 216 and 238 passengers, depending on the model, while the 787-10 can accommodate up to 375 passengers in a typical two-class layout. The shift to the 787-10 will boost the premium cabin capacity from approximately 30 percent on the 767 to over 50 percent, supporting Delta's margin and revenue goals in competitive transatlantic markets. The additional cargo capability also adds a significant revenue dimension.

This fleet transition continues Delta’s established strategy that began in the mid-2010s with the replacement of 50-seat regional jets by Boeing 717s. The upgauging trend accelerated in the 2020s with the substitution of McDonnell Douglas MD-88s and MD-90s by Airbus A321 and A321neo aircraft. Industry observers note that Delta’s efficiency-driven fleet evolution has positioned it as the leading network carrier by margin in the United States.

Delta’s plan represents a carefully paced modernization focused on maximizing efficiency and passenger experience while addressing market demand changes. The phased introduction of the Max 10 and the delayed but impactful arrival of the 787-10 reflect strategies that balance immediate fleet needs with long-term network planning. These steps offer Delta flexibility to phase out older models cost-effectively without disrupting capacity.