Oneworld alliance carrier Finnair is to open a new US gateway by operating services to Seattle from next year.
The airline is to fly from its Helsinki base three-times weekly with the transatlantic route commencing on 1 June.
Finnair says it will use Airbus A330s for the Seattle service.
The airline’s US network already includes Chicago, Los Angeles, New York and Dallas.
Finnair will also maintain US services from Stockholm Arlanda, with flights to New York and Los Angeles continuing to run in summer 2022.
The airline will use A350-900 twinjets on the Stockholm routes.
Finnair will increase the frequency of these services from May next year, operating daily to New York and four-times weekly to Los Angeles.