Concorde – Smithsonian National Air and Space Museum, Steven F. Udvar-Hazy Center, Chantilly, Virginia

So why did the supersonic Concorde have to retire? It all boiled down to money. In January 1976, the Concorde began flying to the United States. The Concorde would cruise at twice the speed of sound between 55,000 and 60,000 feet — so high that passengers could actually see the curvature of the Earth. Transatlantic flight time was half that of conventional jet aircraft, with the average flight taking less than four hours. Eventually, however, the Concorde became too expensive to operate. For instance, it was only capable of carrying 60 passengers from Paris to Washington, D.C. – 40 shy of its maximum capacity of 100. Furthermore, many of these flights operated at half full, making matters worse. By 2003, Concorde ticket costs averaged around $12,000, and needless to say not many people could afford that! With an average of one ton of fuel consumed per seat, the already small market for the Concorde gradually grew smaller. Routes were cut back, leaving London to New York and Paris to New York as the only routes. The unfortunate Concorde accident in 2000 added to the aircraft’s problems. Air France Concorde service ended on May 31, 2003, and British Airways ceased operations on October 24, 2003.