Full glossary
cabin
Lie-Flat Seat
Lie-Flat Business Class Seat
Definition
A business-class seat that fully reclines to a flat bed for sleeping. Standard on modern wide-bodies, becoming standard on long-range narrow-bodies (A321XLR).
Why it matters
All US airline long-haul business is lie-flat now. Some older foreign-carrier business is still 'angled flat' (pseudo-flat at a slope). Confirm equipment before booking, older 767 and 777-200 aircraft on partners can have non-lie-flat business.
Related terms in cabin
First Class
The most-premium cabin available on long-haul international flights. Typically suite-style seating with sliding doors, separate beds, butler service, premium dining.
Business Class
Premium cabin on long-haul international flights. Lie-flat seats with all-aisle access on most modern wide-bodies. Replaced First Class on most carriers.
Premium Economy
Mid-tier cabin between economy and business on long-haul flights. Wider seats, more recline, separate cabin, but not lie-flat. Half the price of business in cash.
All-Aisle Access
Business-class seat configuration where every passenger can reach the aisle without climbing over another passenger.