The stretched original. The A321 adds 35 more seats to the A320 formula and remains one of the most commercially successful aircraft ever built.
✈ Scan Your Sky NowThe Airbus A321 is the stretched variant of the A320, with the fuselage extended by 6.93 metres to accommodate up to 220 passengers. It entered service in 1994 and quickly became popular with airlines needing extra capacity on high-demand short to medium-haul routes.
Despite being superseded by the A321neo on new orders, thousands of original A321s remain in active service worldwide. Lufthansa, American Airlines, and Turkish Airlines operate large fleets on routes ranging from busy domestic shuttles to medium-haul international services.
The A321 is the longest of the original A320 family — the fuselage is visibly stretched compared to an A320, giving it a sleek, elongated appearance in the air. If you see an A320 family aircraft and the fuselage looks unusually long relative to the wing, you are probably looking at an A321.
In the air the A321 has the same wing and engines as the A320. The length is the key distinguisher — particularly visible on approach when the aircraft is lower and slower.