Approx. 900 km/h or 560 mph at cruising altitude.
The A380 has a cruising speed of Mach 0.85 (about 900 km/h or 560 mph at cruising altitude), its maximum design speed is Mach 0.96.
35,000ft is the typical cruising altitude.
The cruising altitude of Boeing 747 is 30,000 feet.
35,000ft (A380-800, initial cruise altitude). The service ceiling (maximum altitude) of this aircraft is 43,000 ft.
The cruising altitude of a 747 depends on weather conditions, weight of the aircraft, and the amount of traffic on the other flight levels. Its average cruising altitude is around 33,000 feet.
The Airbus A380 maximum cruising speed is Mach 0.88 (670 mph). Long distance cruising speed is typically M0.85 (650 mph). max cruising speed = .85 MACH max design speed = .96 MACH
The A380 has a service maximum of 43,000 ft.
During IFR flight, ATC will dictate cruising altitude.
Cruising altitude is an economical height for an aircraft to fly. It is also a choice made in view of other aircraft routes.
About Mach 0.84 for an A380 or Mach 0.80 for an A320
We will fly a VFR flight heading 245 - what is a legal cruising altitude?