Boeing 737 family
The Boeing 737 line on this site has eleven variants. Length runs from the 737-200 to the 737 MAX 9, a spread of 38.1 ft (38.0%). Five different wingspans appear across the line. Maximum takeoff weight grows by 68.6% from the lightest variant to the heaviest. The variants spread over Design Group III and Approach Categories C and D.
The 737-200 has the shortest length, the lowest maximum takeoff weight and the shortest wingspan among the 39 Boeing types. The 737-500 has the shortest wheelbase among the 39 Boeing types. The 737-700 has the 2nd-most US flight-plan operations in FY2024 of the 352 types on this site with an FY2024 count. The 737-700 has the 4th-largest fleet on the US register in Design Group III (77 types, 69 with a registration count). Among the 80 families on this site, the line has the most variants, the most US flight-plan operations in FY2024 and the 5th-widest range of wingspans.
Every variant, shortest first
| Variant | Wingspan | Length | Tail height | Max. takeoff weight | Codes |
|---|---|---|---|---|---|
| Boeing 737-200 | 93.0 ft | 100.2 ft | 36.8 ft | 115,500 lb | III-C |
| Boeing 737-500 | 94.8 ft | 101.8 ft | 36.3 ft | 136,000 lb | III-C |
| Boeing 737-600 | 117.4 ft | 102.5 ft | 41.7 ft | 144,500 lb | III-C |
| Boeing 737-300 | 102.4 ft | 109.6 ft | 36.3 ft | 139,500 lb | III-C |
| Boeing 737-700 | 117.4 ft | 110.3 ft | 41.6 ft | 154,500 lb | III-C |
| Boeing 737 MAX 7 | 117.8 ft | 116.7 ft | 41.0 ft | 177,000 lb | III-D |
| Boeing 737-400 | 94.8 ft | 119.6 ft | 36.3 ft | 150,000 lb | III-C |
| Boeing 737-800 | 117.4 ft | 129.5 ft | 41.4 ft | 174,200 lb | III-D |
| Boeing 737 MAX 8 | 117.8 ft | 129.7 ft | 40.3 ft | 181,200 lb | III-D |
| Boeing 737-900 | 117.4 ft | 138.2 ft | 41.4 ft | 187,700 lb | III-D |
| Boeing 737 MAX 9 | 117.8 ft | 138.3 ft | 40.8 ft | 194,700 lb | III-D |
Boeing 737-600
The Boeing 737-600 has the 2nd-tallest tail in Design Group III (77 types), and the 5th-highest wingspan-to-length ratio among the 176 jets on this site. Within the 11-variant Boeing 737 line it has the tallest tail. Its wingspan stops 0.6 ft short of the 118 ft line where Design Group IV begins. The 737-600 also has the 3rd-shortest length and the 2nd-shortest wheelbase among the 39 Boeing types, and the 3rd-lowest FAA reference approach speed among the 39 Boeing types (the input for its Approach Category).
Boeing 737 MAX 7
The Boeing 737 MAX 7 has the joint 3rd-highest FAA reference approach speed among the 77 types in Design Group III (the input for its Approach Category). Its wingspan stops 0.2 ft short of the 118 ft line where Design Group IV begins. The FAA lists it in two approach categories, C and D, from reference speeds of 140 to 145 kt.
Boeing 737 MAX 8
The Boeing 737 MAX 8 has the joint 3rd-highest FAA reference approach speed among the 77 types in Design Group III (the input for its Approach Category). Its wingspan stops 0.2 ft short of the 118 ft line where Design Group IV begins. The FAA lists it in two approach categories, C and D, from reference speeds of 140 to 145 kt. The 737 MAX 8 also has the 2nd-narrowest main gear and the 3rd-most US flight-plan operations in FY2024 among the 39 Boeing types.
Boeing 737-900
The Boeing 737-900 has the joint 4th-tallest tail in Design Group III (77 types), and the 5th-highest maximum takeoff weight in Design Group III (77 types, 76 with a published figure). Its wingspan stops 0.6 ft short of the 118 ft line where Design Group IV begins. The FAA lists it in two approach categories, C and D, from reference speeds of 140 to 149 kt. The 737-900 also has the 2nd-highest FAA reference approach speed among the 77 types in Design Group III (the input for its Approach Category).
Source: FAA Aircraft Characteristics Database, October 2024 release. How we measure.