The Aerospatiale Concorde was the first and to date, only supersonic commercial airliner. Design began in the 1950's for this 92 to 128 passenger aircraft with it's first flight taking place in 1969.
Although it was capable of flying at a speed of over Mach 2 (1,354mph) it was not a commercial success and only 14 aircraft flew with British Airways and Air France. Many major airlines were interested in Concorde however, as 17 airlines had signed contracts for over 100 aircraft. These were subsequentially cancelled due to noise and environmental concerns.