6. AIRBUS A340 500
Cruise Speed: Mach 0.83
Engines: 4
Originally envisioned as the 4-engine version of the Airbus original model A300 (hence the 4 in 340), A340 went on to become a highly successful design on its own. For a while, it held the title of the longest range commercial airliner, until Boeing 777-200LR, which was also more economical, which led Airbus to shut down the production in 2011, but there are plenty of them still in service. With a speed of Mach 0.83, it deserved a place on our list of fastest commercial passenger planes in the world today.