Airbus A320neo Cabin Is Nearly a Foot Wider Than Boeing 737 MAX's Interior

Airbus’s A320neo family maintains a distinct advantage in cabin width compared to Boeing’s 737 MAX series, delivering more space to passengers in economy class. The A320neo’s cabin measures approximately 12 feet 2 inches internally, whereas the 737 MAX’s cabin is about 11 feet 7 inches wide. This near nine-inch difference allows for wider aisles, a slightly roomier passenger experience, and improved shoulder and head clearance within the airframe.

Originally introduced decades ago, the Boeing 737 design has remained fundamentally unchanged in fuselage diameter since its 1960s inception. While Boeing enhanced interior elements such as overhead bins and refined the cabin environment with the Sky Interior, the aircraft’s external fuselage width has stayed at roughly 12 feet 4 inches. Conversely, Airbus’s A320 family, dating from the 1980s, features a cross-section fuselage width of approximately 13 feet.

This sizable difference in width translates to practical benefits for passengers. On average, seats in A320s on low-cost carriers tend to be around 17.5 to 18 inches wide, compared to the Boeing 737’s typical 17 to 17.5 inches. Furthermore, the A320’s aisle width generally measures 19 to 20 inches, whereas the 737 offers around 18 to 19 inches. Airbus achieves this spaciousness with wider cabin sidewalls and less pronounced curvature, enhancing comfort by affording more shoulder and head room.

Range capabilities also differ between the narrowbodies. The A320neo’s variants, especially the A321XLR, boast ranges up to 4,700 nautical miles, surpassing the 3,800-nautical mile capability of the 737 MAX 7, and the 3,500-nautical mile capability typical of the MAX 8. These extended ranges strengthen Airbus’s position in long thin routes, complementing the cabin advantages.

In comparison to other narrowbodies, the A320 and the Boeing 737 remain the dominant players globally. Their six-abreast economy seating configuration contrasts with smaller regional jets such as the Embraer E-Jet’s four-abreast layout and the Airbus A220’s five-abreast setup. Notably, newer competitors like Russia’s MC-21 and China’s COMAC C919 offer even wider cabins than the A320, but geopolitical factors have complicated their adoption in Western markets.

Despite Airbus’s introduction of thinner sidewall panels in newer models to marginally increase cabin width, these changes haven’t significantly expanded passenger space on the A320 compared to the earlier A320ceo. Boeing, meanwhile, prepares to transition away from the 737 MAX with plans for a clean-sheet narrowbody design, potentially allowing meaningful cabin width improvements in the future.

The legacy design constraints of the Boeing 737, including its low ground clearance and airport infrastructure considerations, imposed limits on fuselage growth, leading to its narrower cabin relative to Airbus’s broader tube construction. This legacy influences seat width and cabin comfort on MAX aircraft today, especially on low-cost carriers where optimizing capacity often limits seat size.

With both airframers focusing on extending aircraft range and operational efficiency, passenger comfort resides partly in cabin dimensions determined long ago. The Airbus A320neo’s wider cabin and aisle provide a tangible advantage in passenger space within the competitive narrowbody sector, an advantage that Boeing’s upcoming successor aims to address with a fresh design approach.