Fuselage Cross-Sections
Aircraft Sizing & Categories · 4 specs
Direct Answer
Commercial airliner fuselages are engineered around standardized interior cabin diameters that dictate cross-aisle seat arrangements: Single-Aisle Narrow-Body (3-3 seating, 3.5–3.7 m cabin) vs. Twin-Aisle Wide-Body (2-4-2, 3-3-3, or 3-4-3 seating, 5.3–6.5 m cabin).
Specs
| Narrow-Body Cabin Width | 3.53 m (11.6 ft, B737) to 3.70 m (12.1 ft, A320) |
| Wide-Body Cabin Width | 5.28 m (A330) to 5.86 m (B777) to 6.54 m (A380 main deck) |
| Standard Economy Seat Width | 17.0" to 18.5" (43.2–47.0 cm) |
| Standard Aisle Width | 18" to 20" (45.7–50.8 cm) |
Commercial Airliner Fuselage Comparison Matrix
| Aircraft Model | Exterior Fuselage Width | Interior Cabin Width | Standard Economy Cross-Section | Aisle Count |
|---|---|---|---|---|
| Airbus A220 | 3.50 m (11.5 ft) | 3.28 m (10.75 ft) | 2-3 (5-abreast) | 1 Aisle |
| Boeing 737 (NG/MAX) | 3.76 m (12.3 ft) | 3.53 m (11.6 ft) | 3-3 (6-abreast) | 1 Aisle |
| Airbus A320 family | 3.95 m (13.0 ft) | 3.70 m (12.1 ft) | 3-3 (6-abreast) | 1 Aisle |
| Boeing 767 | 5.03 m (16.5 ft) | 4.72 m (15.5 ft) | 2-3-2 (7-abreast) | 2 Aisles |
| Airbus A330 / A340 | 5.64 m (18.5 ft) | 5.28 m (17.3 ft) | 2-4-2 (8-abreast) | 2 Aisles |
| Airbus A350 XWB | 5.96 m (19.6 ft) | 5.61 m (18.4 ft) | 3-3-3 (9-abreast) | 2 Aisles |
| Boeing 787 Dreamliner | 5.77 m (18.9 ft) | 5.49 m (18.0 ft) | 3-3-3 (9-abreast) | 2 Aisles |
| Boeing 777 / 777X | 6.20 m (20.3 ft) | 5.86 m (19.2 ft) | 3-4-3 (10-abreast) | 2 Aisles |
| Boeing 747-400 / -8 | 6.50 m (21.3 ft) | 6.13 m (20.1 ft) | 3-4-3 (10-abreast) | 2 Aisles |
| Airbus A380-800 Main | 7.14 m (23.4 ft) | 6.54 m (21.45 ft) | 3-4-3 (10-abreast) | 2 Aisles |