(Redirected from Seat configurations of the Airbus A380). The A380-800 layout with 519 seats displayed. The Airbus A380 has two full-length decks of 49.90 m (163 ft 8 in), though the upper deck has a slightly reduced usable length due to the curvature of the front fuselage and the front staircase. The main deck measures 6.58 m (21 ft 7 in) in width and the upper deck 5.92 m (19 ft 5 in).