Home / Photos / Fastest of the Fast: A Look at Speedy Aircraft Photos Fastest of the Fast: A Look at Speedy Aircraft By September 10, 2013 Get a quick glance at some of the fastest aircraft in their class.Cessna TTx Top speed: 235 knots Masks need to be on at 25,000 feet. Eurocopter X3 Top speed: 255 knots Is this the future of vertical flight? Piaggio Avanti II Top speed: 400 knots Tri-surface fuel miser is fastest turboprop. Bombardier Global 6000 Top speed: Mach .89 Jet becomes 6,000 nm cruiser at slower speeds. Boeing 747 Top speed: Mach .92 After nearly 50 years, this jumbo still wows. Cessna Citation X Top speed: Mach .935 Midsize speedster will nudge G650 by a hair. Concorde Top speed: Mach 2.04 The civil speed king is no longer flying. North American X-15A-2 Top speed: Mach 6+ Hourly operating costs are classified. Aurora We would tell you how fast, but the NSA might be reading. More From Photos A Fond Memory: Sun 'n Fun Aerospace Expo 2023 Gallery: The Evolution of Van's Aircraft Gallery: Tails on Display at Oshkosh Gallery: Wednesday at Oshkosh Photos: <i>FLYING</i> Honors Award Winners at Adventure Party First Look: Supernal's Air Taxi Passenger Cabin