How fast can an AV8B fly?

The AV-8B Harrier II, a vertical/short takeoff and landing (V/STOL) aircraft used by the U.S. Marine Corps, has a maximum speed of approximately 540 knots (around 620 miles per hour or 1,000 kilometers per hour) at altitude. Its speed can vary based on factors such as weight, fuel load, and flight conditions. The Harrier is designed for close air support and can operate from smaller airfields and even aircraft carriers.