The South Terminal, which cost , was initially dedicated on . The terminal was designed by Welton Becket and Associates. When it opened, the South Terminal had three piers: Pier G (for international flights, approximately at the same location as the present-day Boarding Area (B/A) A in the International Terminal), Pier F/FF (used by Trans World Airlines (TWA) and Western Airlines, later renamed B/A B), and Pier E (used by American Airlines; originally part of Terminal 2, approximately at the present-day B/A C). The three-level Rotunda A addition was completed in 1974 at the end of Pier G. When the North Terminal was completed in 1979, Pier G was renamed Pier A, with the other piers renamed in a counterclockwise direction proceeding from the new Pier A. International flights were moved to the rebuilt Central Terminal (Terminal 2) in 1983, and then to the new International Terminal in 2000.