in 2022, are reserved for Delta Air Lines. Concourse E is on the site where the eastern half of the original Terminal C was. Gates 81–84, 85A, 85B, and 89, in the original portion of Terminal D, are used for Delta Air Lines flights. The gates were formally numbered D1-D11. The Delta Sky Club in the old Terminal D near Gate 81 is still open. There is a temporary passageway to Concourse G that will allow passengers to enter the new Terminal C until the new Concourse F is completed. It will use Gates 80–89. Gates 92–98, in the new Concourse G, opened in 2019, are used for Delta Air Lines and Delta Connection flights. Former Terminals Terminal B (1964—2022) The Central Terminal Building (CTB) was originally six blocks long, and consisted of a four-story central section, two three-story wings, and four concourses (A, B, C, and D) with 40 aircraft gates. The $36 million facilities designed by Harrison and Abramovitz was dedicated on April 17, 1964. Delta and US Airways left the CTB in 1983 and 1992 respectively for their own dedicated terminals on the east side of the airport. The Port Authority and various airlines carried out a $340 million improvement project in the 1990s to expand and renovate the existing space. The terminal was replaced by the new Terminal B, with the final gates (Concourse D) and terminal already demolished in early 2022. Terminal C (1992—2022) The original Terminal C (formerly known as the East End Terminal and USAir Terminal) was a facility that opened September 12, 1992, at a cost of $250 million. Designed by William Nicholas Bodouva + Associates Architects and Planners, it housed part of Delta's operations at LaGuardia. On June 4, 2022, Terminal C's check-in and baggage claim areas were closed. The building was initially conceived in a 1989 agreement between the Port Authority and Texas Air Corporation (then-owner of Continental Airlines and Eastern Air Lines). When Eastern was forcibly bankrupted by Texas Air, its assets—including the new terminal's leases—were transferred to Continental. Continental never moved in, and in turn, sold the leases (along with most of its LaGuardia slots) to US Airways as part of a bankruptcy restructuring. Trump Shuttle, successor to the Eastern Air Shuttle, also occupied the terminal before becoming US Airways Shuttle. As a result of a slot-swap deal between Delta and US Airways, as of July 2012, Delta