"using the Concorde for comparison"

Concorde's Final Flight
Public DomainConcorde's Final Flight - Credit: Adrian Pingstone
Concorde was a supersonic passenger airliner, produced as part of an aviation treaty between Britain and France. It first flew in March 1969, was brought into service in 1976 and retired in 2003, as it was no longer economically viable. There were 20 aircraft in total, which made regular transatlantic flights, as well as shorter flights between and throughout Britain and France. The average speed of the Concorde was 2140 km/hour (1334mph), more than twice the speed of an average aeroplane. The average flight time to New York from London was 3.5 hours, as opposed to the average of 8 hours taken by a normal aircraft.