Boeing 737-7 Facing Launch Delays

Southwest Airlines’ first Boeing 737-7 faces further delays, with deliveries now expected near the end of 2026, as passenger operations are unlikely before 2027.

The type, which received FAA type certification on 3 August 2026, is cleared for deliveries; however, revised timelines have pushed the aircraft into a handover, facing delays because the stored aircraft is not immediately available.

737-7 debut coming in 2027 for Southwest

Southwest Airlines is positioned as the launch customer for the 737-8 and expects deliveries to begin around the end of 2026. Chief Financial Officer Tom Doxey reaffirmed this view, with delivery and entry into service expected in early 2027.

The timeline is a pushback from the coming months, when the aircraft received its certification in early August, and optimism was at an all-time high.

Southwest, like others, has waited years for the 737-7 and has instead been forced to remain patient through the plethora of delays for the smallest member of the 737 MAX family, as deadlines were repeatedly missed.

With an all-Boeing narrowbody fleet built around the 737, the smallest member of the new series, the 737-7 is intended to complement the existing 737-8s in service and provide a lower-capacity, longer-range option.

Additionally, delivering the new 737-7s will help facilitate the continued retirement of older 737NGs, a focus for the airline in recent years. Those renewal efforts are stalling because of persistent delays in acquiring new airframes from Boeing.

The outlook and adjusted fleet plans mean Southwest has not yet listed the 737-7 on its published schedule through March 2027, despite the model already having obtained approval. Flexibility around the aircraft’s service debut is vital, as work continues behind the scenes to get it ready.

27 Boeing 737-7s require more work, says Southwest

Southwest says Boeing has already been hard at work producing the 737-7s, with some airframes already years old because certification ran longer than expected. The U.S. carrier has 27 built and is now preparing them for delivery.

Crucially, however, these 27 aircraft were built before the FAA granted certification approval, which means they must be brought into the final certified configuration before delivery.

Even though certification was the hurdle between production and service, preparation work was another task, with the jets undergoing several updates to reach the final configuration.

The work, while routine and required for the also long-delayed flagship 777-9 product when it enters service in 2027, is time-consuming for the manufacturer. Because systems and documentation must meet the approved design and the jets produced in prior years, it’s a step-by-step process that can delay the debut.

What does this mean for Southwest?

Southwest’s schedule flexibility for the 737-7 allows ongoing reviews as it updates the airframes. Accessing these aircraft in early 2027 doesn’t present a significant change in circumstances.

Southwest has battled delays on the 737-7 for years and has managed with acquisitions, retainments and other fleet decisions. A couple of extra months to debut safely is not a financial burden, as years without certification would be.

After the FAA greenlit the Boeing 737-7, customers like Southwest, which are making final updates before bringing the type into service, can take a more comfortable outlook now that the biggest barrier has been removed.

The 737-7 is the smallest member of the 737 MAX family and the second-to-last derivative to need certification. Marketed as a type that can seat anywhere from 135 to 160 passengers in a two-class layout, with a range of just over 7,000 kilometers, its practical role within the network has become clear.

The first aircraft should be delivered by the end of 2026, as software work continues, and after a familiarisation period, the jet is expected to enter service in early 2027.