Delta Air Lines has broken ground on a 37-gate terminal at New York LaGuardia Airport (LGA) that will replace two aging terminal facilities.

The price tag on the terminal is $4 billion, $3.4 billion of which will be covered by Delta—marking the largest investment in an airport facility in Delta’s history.
The construction is part of a larger redevelopment of LGA being carried out by the Port Authority of New York and New Jersey, which will cover $600 million of the Delta terminal’s cost. The Port Authority has given Delta a 50-year lease to manage the terminal the airline is building at the airport. Full completion of the upgrade to LGA is expected by 2021.

Delta’s new LGA terminal will feature four concourses. The 37 gates will be “flexibly sized” so they can accommodate the full range of aircraft in Delta’s fleet, the airline said. The terminal will also have a Delta Sky Club lounge, more general seating than the terminals it is replacing and 30% more concessions space than the current terminals.

Delta opened a $1.2 billion terminal at New York JFK International Airport in 2013.

Aaron Karp