Six airlines will switch locations on December 9 as New York’s LaGuardia International Airport prepares for a multi-billion dollar renovation project.

The moves include Jet Blue and Alaska Airlines switching from Terminal B to LaGuardia’s historic Marine Air Terminal, also known as Terminal A.

The Delta Shuttle will move from the Marine Air Terminal to Terminal C, thus consolidating all Delta operations in Terminals C and D.

Meanwhile American Airlines will consolidate its operations in Terminal B, ending all flights at Terminal C.

“Customers will know exactly which terminal to check-in to, they won’t have to travel far for their connections, and Admirals Club members can enjoy our upgraded club featuring one of the best views of New York City,” said Loretta Bove, American Airlines’ managing director of LGA Hub Operations.

A press release from the Port Authority of New York and New Jersey outlining the shifts said that “Consolidation of aircraft operations for American and Delta will help make airfield movements more efficient, helping to reduce on-the-ground delays. It also will improve the experience for passengers.”

“All of American’s customers, for example, will be dropped off, checked in and picked up at Terminal B regardless of where they are flying to or from.

“Delta Shuttle customers in Terminal C will have access to amenities that include a 7,600-square-foot Delta Sky Club, chef-driven restaurants, an expansive food hall, and upscale retail.”

Frontier and Spirit Airlines will also move flight operations from Terminal B to Terminal D. However, passengers will still have to check in at Terminal C.

The $8 billion renovation of LaGuardia will include a new AirTrain link to the New York subway system and the Long Island Rail Road as well as a replacement of the airport’s Terminal B. Delta has committed to replacing Terminals C and D.

“Consolidating our operation at LaGuardia is one of the first significant steps toward Delta’s future $3.9 billion, 37-gate facility as the airport moves ahead with its historic redevelopment into a completely rebuilt and unified 21st-century transit hub,” said Henry Kuykendall, Delta’s senior vice president of airport operations for the Northeast.