The Boeing 777 comes in several variants—including the 777-200, 777-200ER (Extended Range), 777-300, 777-300ER, and the ultra long-range 777-200LR. Powered primarily by engines like the General Electric GE90, Rolls-Royce Trent 800, or Pratt & Whitney PW4000, it can achieve top cruising speeds around Mach 0.84 (approximately 560 mph or 900 km/h).