What was the first supersonic passenger airliner?

The first supersonic passenger airliner is the Concorde. This aircraft was developed in the 1960s as a joint venture between the United Kingdom and France, and it made its first flight in 1969. The Concorde was capable of flying at speeds over twice the speed of sound, specifically around Mach 2.04, allowing it to reduce transatlantic flight times significantly compared to subsonic airliners.

The aircraft was known for its distinctive delta wing shape, which was designed to handle the aerodynamic challenges of supersonic flight, and it operated commercially from 1976 until its retirement in 2003. The Concorde remains an iconic symbol of advanced aeronautical engineering and luxury travel, showcasing the peak of technology during its era.