Fleet Information

Southwest Virtual Main Fleet


The 737-300 was launched in 1981 by both USAir and Southwest Airlines becoming the first model of the 737 Classic series. Southwest Airlines has a typical seating capacity of 137 passengers in a one class seating configuration. The 300 series remained in production until 1999 when the last aircraft was delivered to Air New Zealand on December 17th, 1999. Various modifications have been made to aircraft previously in service. The 737-300 can be retrofitted with Aviation Partners Boeing winglets. The 737-300 retrofitted with winglets is designated the -300SP (special performance). Used passenger -300 aircraft have also been converted to freighter versions.


The 737-500 was launched in 1987 by Southwest Airlines and entered service in 1990. The fuselage length of the 737-500 is similar to the 737-200 while incorporating the improvements of the 737 Classic series. It offered a modern and direct replacement of the 737-200, while also allowing longer routes with fewer passengers to be more economical than with the 737-300. Southwest Airlines has a typical seating capacity of 122 passengers in a one class seating configuration. The last -500 was delivered to All Nippon Airlines on July 26th,1999. The 737-500 has gained some popularity with Russian airlines, (Aeroflot-Nord, S7 Airlines, and Rossiya Airlines) all buying second-hand models of the aircraft to replace aging Soviet-built aircraft.


The 737-700 was the first of Next Generation series when launch customer Southwest Airlines ordered the variant in November 1993. The variant was based on the 737-300 and entered service in 1998. It replaced the 737-300 in Boeing's lineup, and its direct competitor is the A319. Although it typically seats 132 passengers in a two class cabin or 149 in an all economy configuration, Southwest utilizes a seating configuration of 137 similar to the 737-300 variant. Boeing delivered the 5,000th 737 to Southwest Airlines on February 13th, 2006.

Notable New Features of the 737NG Series:

  • Improved CFM56-7 turbofan engine, 7% more fuel efficient than the CFM56-3
  • Intercontinental range of over 3,000 nautical miles (5,556 km)
  • Increased fuel capacity and higher Maximum Takeoff Weight (MTOW)
  • Six-screen LCD glass cockpit with modern avionics, retaining crew commonality with previous generation 737
  • Passenger cabin improvements similar to those on the Boeing 777, featuring more curved surfaces and larger overhead bins than previous generation 737s. The Next Generation 737 interior was also adopted on the Boeing 757-300.
  • New airfoil section, increased wing span, area, and chord
  • Winglets on most models
  • Redesigned vertical stabilizer

Boeing 737 Specifications

Launch Year198119871998
Cockpit CrewTwo
Seating Capacity (SWA)137 (1 Class)122 (1 Class)137 (1 Class)
Length109 ft 7 in (33.4 m)101 ft 8 in (31.1 m)110 ft 4 in (33.6 m)
Wingspan94 ft 9 in (28.88 m)94 ft 8 in (28.9 m)117 ft 5 in (35.7 m)
Height36 ft 6 in (11.13 m)36 ft 5 in (11.1 m)41 ft 2 in (12.5 m)
Fuselage Width12 ft 4 in (3.76 m)
Fuselage Height13 ft 6 in (4.11 m)
Cabin Width11 ft 7 in (3.54 m)
Cabin Height7 ft 3 in (2.20 m)
Empty Weight72,100 lb (32,700 kg)68,860 lb (31,300 kg)84,100 lb (38,147 kg)
Maximum Take-off Weight138,500 lb (62,820 kg)133,210 lb (60,550 kg)154,500 lb (70,080 kg)
Maximum Landing Weight114,000 lb (51,700 kg)110,000 lb (49,895 kg)128,928 lb (58,604 kg)
Cargo Capacity822 ft³ (23.3 m³)822 ft³ (23.3 m³)966 ft³ (27.3 m³)
Takeoff Run at MTOW7,681 ft (2,300 m)8,249 ft (2,470 m)8,283 ft (2,480 m)
Service Ceiling37,000 ft (11,300 m)37,000 (11,300 m)41,000 ft (12,500 m)
Cruising Speed0.74 (485 mph, 780 km/h)0.785 (514 mph, 828 km/h)
Maximum Speed0.82 (544 mph, 876 km/h, 473 kts)
Range Fully Loaded2,270 nm (4,204 km)2,402 nm (4,444 km)3,365 nm (6,230 km)
Max. Fuel Capacity6,130 US gal (23,170 L)6,296 US gal (23,800 L)6,875 US gal (26,020 L)