What is the top speed of the 747?

The top speed of the Boeing 747 itself is about 570 mph, and this flight maxed out at 825 mph. The difference between “ground speed” (zero bonus) and “air speed” (200+ mph bonus) is also why this speed, while technically faster than the speed of sound, didn't ever go supersonic.



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The Boeing 747-8i is a wide-body airliner that was developed by Boeing Commercial Airplanes. It has a maximum cruising speed of 614 mph (988 km/h), and it is currently one of the fastest airliners in service.

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The wings of a 747 are nowhere near strong enough to mount an engine capable of supersonic flight. Generally, engines used in aircraft like the Concorde or the F-22 are skinny and long. They also weigh quite a fair amount, further requiring a complete overhaul of the way the engines would be supported.

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This depends on the size of the plane, its efficiency, and how fast it's flying. A modern Boeing 747 can fly about 15,000 km (9,500 miles) when it's flying at 900 kmh (550 mph). This means it can fly non stop for almost 16 hours!

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The British-built Fairey Delta 2 (FD2) monoplane was filmed travelling at a blistering 1,811 km/h (1,132 mph) on 10 March 1956, making it the first aircraft to break the 1,000-mph barrier. This also secured it the world air-speed record, although that was surpassed by the McDonnell F-101A Voodoo on 12 December 1957.

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While it is possible for an A380 to operate on a single engine, it is not ideal as the aircraft would experience a decrease in speed, drag, and loss of altitude, making it crucial for the crew to restart the other engines or find a suitable airport for an emergency landing.

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The Boeing 777X was unveiled on March 13 in a private, employees-only event. The 777X is destined to serve as Boeing's new flagship and replace the iconic 747 jumbo jet. The 777X comes in two variants: the $410.2 million 777-8, and the $442.2 million 777-9.

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But after five decades, customer demand for the 747 eroded as Boeing and Airbus (AIR.PA) developed more fuel efficient two-engine widebody planes. When Boeing confirmed in July 2020 that it would end 747 production, it was already only producing at a rate of half an aircraft a month.

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