The Boeing 737-900 is the largest member of the 737 Next Generation (NG) family, introduced to provide increased seating capacity for high-density routes. Launched in 1997 and first delivered to Alaska Airlines in 2001, the 737-900 extended the fuselage even further than the 737-800 but initially had limitations on range and passenger load due to lack of additional exits.

To address these issues, Boeing later introduced the 737-900ER (Extended Range) with design improvements that allowed it to compete more directly with the Airbus A321. Though less common than other 737 variants, the -900 and -900ER brought enhanced flexibility to fleet planning.

Key Specifications (737-900)

• Crew: 2 (Pilots).
• Capacity: Up to 220 passengers (737-900ER with high-density configuration).
• Length: 42.11 m (138 ft 2 in).
• Wingspan: 35.79 m (117 ft 5 in) with winglets.
• Height: 12.55 m (41 ft 2 in).
• Max Takeoff Weight (MTOW): ~85,139 kg (187,700 lb).
• Engines: 2 × CFM International CFM56-7B turbofans.
• Cruise Speed: Mach 0.785 (~840 km/h or 521 mph).
• Range: ~5,925 km (3,680 mi) for the -900ER.
• Ceiling: 41,000 ft (12,500 m).

Notable Features

• Longest fuselage of any 737 model prior to the 737 MAX 10.
• Initially limited in capacity due to door configuration; improved with the 737-900ER.
• Shares systems and cockpit layout with other 737 NG variants for fleet commonality.
• Offers strong economics on high-demand, medium-range routes.
• Less commonly ordered than the 737-800 but appreciated for its passenger volume.

Operators & Usage

• Operated by Alaska Airlines, Delta Air Lines, United Airlines, Korean Air, Lion Air, and others.
• Over 500 737-900 and -900ER aircraft produced.
• Some have been retired in favor of 737 MAX 9 and Airbus A321neo models.
• The 737-900ER remains in service for airlines needing additional seating without switching aircraft families.