Boeing 737
The Boeing 737 is an American narrow-body aircraft produced by Boeing at its Renton factory in Washington. Developed to supplement the Boeing 727 on short and thin routes, the twinjet retained the 707 fuselage width and six abreast seating but with two underwing Pratt & Whitney JT8D low-bypass turbofan engines. Envisioned in 1964, the initial 737-100 made its first flight in April 1967 and entered service in February 1968 with Lufthansa. The lengthened 737-200 entered service in April 1968, and evolved through four generations, offering several variants for 85 to 215 passengers.
Summary from Wikipedia, photo via Wikimedia Commons, licensed under CC BY-SA.
- Manufacturer
- Boeing
- Category
- Airliners
- US-registered
- 2,841
FAA registry models
Airlines operating the Boeing 737
- Southwest Airlines754
- United Airlines465
- Ryanair458
- Alaska Airlines228
- American Airlines210
- Delta Air Lines208
- Air China143
- WestJet127
- Qantas74
- SunExpress64
- Spicejet39
- Boeing38
- Aeroflot Russian Airlines36
- Blue Air33
- Lucky Air31
Airlines with the most registered Boeing 737 airframes (FAA + international registries) — registered airframes, not necessarily in active service, updated August 10, 2026.
Reference and training only. Specifications vary by variant — consult the manufacturer and the official documents.