Glossary
Twin-Aisle
Definition: Twin-aisle is another term for wide-body aircraft, referring to the two passenger aisles that run the length of the cabin, allowing wider seating configurations and more spacious premium cabins.
The twin-aisle design is what enables the premium business class products that make long-haul flying comfortable. With two aisles, the cabin is wide enough for 1-2-1 seating configurations that give every business class passenger direct aisle access and space for a lie-flat bed.
Common twin-aisle configurations in business class include: 1-2-1 (reverse herringbone or herringbone), 1-1-1 (some first class products), and 2-2-2 (older business class layouts being phased out). The twin-aisle design also benefits economy passengers with more aisle access and faster boarding/deplaning.
Twin-aisle aircraft include the Boeing 777, 787 Dreamliner, 747, Airbus A330, A340, A350, and A380. When searching for business class flights, filtering by twin-aisle equipment ensures you’ll get the best available premium product on your route.