United Airlines plans to offer daily passenger flights from Everett's Paine Field airport starting next year.
The airline announced Thursday that six daily flights from the airport north of Seattle to its hubs in Denver and San Francisco will begin fall 2018.
In May, Alaska Airlines also announced that it would begin offering daily flights out Paine Field next fall.
Paine Field was the Seattle area's first commercial airport before it was replaced by Seattle Tacoma International airport in 1946.
Propeller Airports is developing a two-gate passenger terminal at the Snohomish County airport in a public-private partnership with the county.
United Airlines will add service to Paine Field-Snohomish County airport near Seattle in 2018, joining Alaska Airlines in returning commercial air service to the airport. That accounts for almost all of the 16 daily flights that Propeller CEO Brett Smith has said he expects his two-gate terminal will be able to handle, given typical turn times. A 2012 Federal Aviation Administration decision capped daily flights at almost two dozen. "Our focus is now entirely on getting the terminal built and open".
United has not yet specified the types of aircraft it would fly out of Paine Field, which now sees more than 300 flights per day, 96 percent of which come from general aviation and aerospace activity.
United's announcement comes almost 80 years after it operated the first commercial flight from Paine Field in 1939.
In those early days, Boeing Field in Seattle was the main regional airport. The airport now plays host to the largest building in the world by volume, used to manufacture numerous Boeing aircraft, from the 747 to the 787, among others. It's also home to a major aviation maintenance facility and several flight schools.
Paine Field is now dominated by one of two Boeing aircraft manufacturing plants.
Citing noise and traffic concerns, nearby residents in the city of Mukilteo, which adjoins the Paine Field runway, long opposed commercial flights at the airfield.
Propeller has agreed to limit the number of commercial flights to a maximum of 22 per day and to restrict commercial air operations to the hours from 7 a.m.to 6 p.m.