The Sundrome, later TWA Domestic Terminal and Terminal 6, was one of several terminals at John F. Kennedy International Airport. It was designed by I. M. Pei & Partners (now Pei Cobb Freed & Partners). Opened in 1970, it was initially used by National Airlines. It had been occupied at various times by Trans World Airlines (domestic flights), Pan American World Airways, United Airlines (SFO and LAX transcon), ATA Airlines, Pan American Airways (1996-1998), Carnival Airlines and Vanguard Airlines. Most recently, from 1998–2008, Terminal 6 was the home of JetBlue Airways. It became vacant on October 22, 2008, when JetBlue moved to Terminal 5, and finally demolished in 2011.