The Boeing 747 is one of the fastest commercial aircraft in the sky, typically cruising at Mach 0.85 to 0.86. For the newest model, the 747-8i, this translates to a ground speed of approximately 570 mph (917 km/h) at a cruising altitude of 35,000 feet. Under the right conditions, with a strong tailwind (jet stream), a 747 can reach ground speeds exceeding 700 mph, occasionally approaching the sound barrier relative to the ground. In 2026, the 747-8 holds the distinction of being the fastest wide-body jet in service, slightly outpacing the Boeing 787 and Airbus A350, which typically cruise around Mach 0.85. This speed is one reason why the 747 was chosen for Air Force One; the two new presidential 747-8s (VC-25B) undergoing final testing in 2026 are designed to maintain high-speed "sprint" capabilities while carrying the massive weight of advanced defense and communications equipment.