Southwest Airlines plans to introduce the Boeing 737 MAX 7 into passenger service in March 2027, according to an internal rollout document obtained by View From The Wing. Deliveries are expected to start in December 2026, with the airline initially operating 27 already-built aircraft and newly manufactured examples arriving from February 2027. Before entering commercial service, each aircraft will undergo configuration work, maintenance and validation flights, including a simulated extended overwater operation lasting more than 3.5 hours.
The debut follows the Federal Aviation Administration's type certification of the MAX 7 on August 3, which cleared the way for deliveries to Southwest, the variant's launch customer. The aircraft will feature 150 Recaro seats, including designated extra-legroom seating, along with Starlink connectivity, in-seat power, larger overhead bins and three lavatories, up from two on Southwest's 737-700s. That is 13 more seats than the 137-seat 737-700, an increase of about 9.5%, while stopping at 150 seats avoids the additional flight attendant generally required in the United States for aircraft configured with 151 or more passenger seats.
Southwest intends to include the MAX 7 in its published schedules before the end of 2026, although the March 2027 introduction remains subject to change as operational preparations continue. The first 27 aircraft can gradually take over extended overwater missions currently flown by older 737-800s, such as Burbank-Honolulu, Phoenix-Hawaii and Las Vegas-Hawaii, freeing the 737-800s for reassignment elsewhere in the domestic network. The MAX 7 is also central to replacing Southwest's older 737-700s, many of which have been in service for about two decades.