The Boeing 737 is the classic member of the short-haul skies, a classic narrow-body series that has served as the mainstay of international aviation for over five decades. From the original "original Boeing 737" -100 and -200 with their cigar-shaped engines to the high-efficiency "Classic" and "Next Generation" (NG) series, the 737 has evolved through multiple generations to meet the ever-changing needs of the industry. Its low-to-the-ground design and versatile performance have made it a favorite for both major network carriers and budget airlines alike. The latest 737 MAX family continues this storied legacy, incorporating advanced LEAP-1B engines and "Advanced Technology" winglets to deliver great efficiency and range, ensuring the 737 remains a fixture at airports from the smallest regional strips to the world's busiest hubs.
Introduced in the late 1960s, the 737-200 is the original Boeing 737 model designed for short- to medium-haul routes. It features twin wing-mounted engines and became known for its rugged design, reliability, and ability to operate from shorter, even unpaved runways in remote areas.
| ICAO code | B732 |
| Engine type | JT8D |
| Length | 102 ft / 31.9 m |
| Wingspan | 94.9 ft / 28.88 m |
| Height | 34.6 ft / 10.55 m |
| MTOW | 107,000 lbs / 48.5 tons |
| Range | 1700 nm / 3,150 km |
| Max pax capacity | 130 |
The 737-300 launched the Classic series in the 1980s with improved CFM56 turbofan engines, offering better fuel efficiency, range, and noise reduction compared to earlier models. It seats about 130 passengers and became popular for both domestic and regional routes.
| ICAO code | B733 |
| Engine type | CFMI CFM-56 |
| Length | 109.6 ft / 33.41 m |
| Wingspan | 94.8 ft / 28.9 m |
| Height | 36.3 ft / 11.6 m |
| MTOW | 139,500 lbs / 63.3 tons |
| Range | 1600 nm / 2960 km |
| Max pax capacity | 140 |
The 737-400 is a stretched version of the -300, increasing capacity to around 150 passengers. It maintained the same wing and engine design but targeted higher-demand routes with more passengers.
| ICAO code | B734 |
| Engine type | CFMI CFM-56 |
| Length | 119.6 ft / 36.45 m |
| Wingspan | 94.8 ft / 28.9 m |
| Height | 36.3 ft / 11.6 m |
| MTOW | 150,000 lbs / 68 tons |
| Range | 2100 nm / 3,890 km |
| Max pax capacity | 159 |
The 737-500 is a shortened Classic variant designed to replace the aging 737-200, combining the smaller fuselage length with updated engines and avionics. It seats about 110-120 passengers and is well-suited for lower-demand short-haul flights, offering improved fuel efficiency and reliability.
| ICAO code | B735 |
| Engine type | CFMI CFM-56 |
| Length | 101.8 ft / 31.3 m |
| Wingspan | 94.8 ft / 28.9 m |
| Height | 36.3 ft / 11.6 m |
| MTOW | 136,000 lbs / 61.7 tons |
| Range | 1600 nm / 2960 km |
| Max pax capacity | 122 |
As the smallest member of the Next Generation (NG) family, the 737-600 replaces the 737-500 with a more modern design, featuring updated avionics, improved aerodynamics, and better fuel economy. It typically seats around 110 passengers.
| ICAO code | B736 |
| Engine type | CFMI CFM-56 |
| Length | 102.5 ft / 31.24 m |
| Wingspan | 112.6 ft / 34.32 m |
| Height | 41.7 ft / 12.71 m |
| MTOW | 144,500 lbs / 65.5 tons |
| Range | 3,200 nm / 5,930 km |
| Max pax capacity | 132 |
The 737-700 is a very popular NG model with seating for approximately 140 passengers. It combines improved fuel efficiency, range, and modern cockpit technology. Airlines widely use it for both short and medium-haul flights.
| ICAO code | B737 |
| Engine type | CFMI CFM-56 |
| Length | 110.3 ft / 33.62 m |
| Wingspan | 112.6 ft / 34.32 m |
| Height | 41.6 ft / 12.68 m |
| MTOW | 154,500 lbs / 70 tons |
| Range | 2500 nm / 4,630 km |
| Max pax capacity | 149 |
The 737-800 is the workhorse of the NG family, stretching the fuselage to accommodate about 160 passengers. It offers excellent fuel efficiency and reliability, making it one of the best-selling single-aisle jets worldwide.
| ICAO code | B738 |
| Engine type | CFMI CFM-56 |
| Length | 129.5 ft / 39.47 m |
| Wingspan | 112.6 ft / 34.32 m |
| Height | 41.4 ft / 12.62 m |
| MTOW | 174,200 lbs / 79 tons |
| Range | 2000 nm / 3,700 km |
| Max pax capacity | 189 |
The 737-900 is the largest Next Generation variant, designed to compete with larger narrowbodies and regional jets. It seats up to 180 passengers with a longer fuselage and advanced systems.
| ICAO code | B739 |
| Engine type | CFMI CFM-56 |
| Length | 138.2 ft / 42.12 m |
| Wingspan | 112.6 ft / 34.32 m |
| Height | 41.4 ft / 12.62 m |
| MTOW | 187,700 lbs / 85.1 tons |
| Range | 2745 nm / 5,080 km |
| Max pax capacity | 220 |
The MAX 7 is the smallest member of the 737 MAX family, designed as a modern replacement for the 737-700. It seats around 172 passengers and offers improved fuel efficiency and longer range.
| ICAO code | B37M |
| Engine type | CFMI LEAP-1 |
| Length | 116.7 ft / 35.57 m |
| Wingspan | 117.8 ft / 35.91 m |
| Height | 41 ft / 12.5 m |
| MTOW | 177,000 lbs / 80.3 tons |
| Range | 3,800 nm / 7,040 km |
| Max pax capacity | 172 |
The 737 MAX 8 is the most popular MAX variant, seating about 178 passengers. It combines extended range, enhanced fuel efficiency, and updated avionics to compete directly with the Airbus A320neo.
| ICAO code | B38M |
| Engine type | CFMI LEAP-1 |
| Length | 129.7 ft / 39.53 m |
| Wingspan | 117.8 ft / 35.91 m |
| Height | 40.3 ft / 12.28 m |
| MTOW | 181,200 lbs / 82.2 tons |
| Range | 3,500 nm / 6,480 km |
| Max pax capacity | 210 |
The MAX 9 is a stretched version of the MAX 8, offering around 193 seats and targeting higher-capacity routes. It retains the MAX family's fuel-saving technologies and range capabilities.
| ICAO code | B39M |
| Engine type | CFMI LEAP-1 |
| Length | 138.3 ft / 42.15 m |
| Wingspan | 117.8 ft / 35.91 m |
| Height | 40.8 ft / 12.44 m |
| MTOW | 194,700 lbs / 88.3 tons |
| Range | 3,300 nm / 6,110 km |
| Max pax capacity | 220 |
