Which was the first jet airliner?

The first jet airliner was the De Havilland Comet, which made its maiden flight on July 27, 1949. It entered commercial service with British Overseas Airways Corporation (BOAC) in May 1952. The Comet was notable for its speed and range, revolutionizing air travel, although it faced early setbacks due to design flaws that led to accidents. Nonetheless, it paved the way for future jet airliners in the aviation industry.