The US airline TWA Trans World Airlines was, like Pan Am, primarily a long-haul intercontinental airline. During the 1970s and 1980s TWA was also a major operator of the Boeing 747. It flew a total of around forty 747-100s, -200s and -SPs. Other widebodies flown by TWA were the Lockheed L-1011 Tristar and the Boeing 767.The airline was founded in 1925 as Western Air Express. After a merger with Transcontinental Air Transport (T-A-T) in 1930 it became Transcontinental and Western Air (T&WA). The name Trans World Airlines was adopted in 1950.