project headed by aviation historian Geoffrey Arend, the mural was rededicated in 1980. In 1986, Pan Am restarted flights at the MAT with the purchase of New York Air's shuttle service between Boston, New York City, and Washington, D.C. In 1991, Delta Air Lines bought the Pan Am Shuttle and subsequently started service from the MAT on September 1. In 1995, the MAT was designated as a historic landmark. A $7 million restoration was completed in time for the airport's 65th anniversary of commercial flights on December 2, 2004. On December 9, 2017, JetBlue and Alaska Airlines relocated to the MAT, while Delta consolidated all Delta Shuttle flights to Terminal C. On October 27, 2018, Alaska Airlines ended all service from LaGuardia Airport, leaving JetBlue as the terminal's only tenant. On April 28, 2021, Spirit Airlines started operating its Fort Lauderdale-bound flights from Terminal A. On July 20, 2021, JetBlue announced that they will be relocating from the MAT to Terminal B, a move they completed on July 9, 2022, with the relocation of Boston flights to Terminal B. On March 29, 2022, all flights operated by Spirit Airlines now operate out of the MAT. On September 13 of that year, Frontier Airlines moved all of its flights to Terminal A. Terminal B Terminal B serves many airlines, and it functions as a large hub for American Airlines. In 2017, work started on the first of two new concourses, which replaced the old A, B, C, and D concourses. The new terminal was designed by Hellmuth, Obata + Kassabaum. In 2020, the new Terminal B headhouse opened with a bridge connecting it to the completed Eastern Concourse. On January 27, 2022, a second bridge was completed, connecting Terminal B's headhouse to the Western Concourse. In 2022, the old Terminal B was demolished. On October 31, 2021, JetBlue moved to Terminal B (except for flights to Boston), as the airline wanted to make connections easier with American Airlines due to the "Northeast Alliance" between them. JetBlue's Boston flights moved to Terminal B on July 9, 2022. Headhouse Floorplans: Western Concourse (Gates 11–31) In 2020, 8 gates at Terminal B's new Western Concourse opened (24–31). An additional 4 gates (19, 20, 22, and 23) were opened on December 15, 2021, along with a new American Airlines Admirals Lounge. With the opening of these new gates, the old concourse D, the last of