What airline uses the A321 the most?
American Airlines is the largest operator of the Airbus A321 with 302 examples in its fleet. DidYouKnow | American Airlines is the world’s largest operator of the Airbus A321, with over 290 of the type, including CEO, NEO and XLR variants.IndiGo operates the Airbus A320 CEO & NEO, the A321 NEO and the ATR 72-600 aircraft.