Delta Air Lines will launch daily non-stop flights from London Heathrow Airport to Seattle Tacoma International Airport on March 29 2014.
The airline said it was unveiling the plans "in anticipation" of receiving antitrust immunity later this year for its joint venture with Virgin Atlantic.
Tickets will be available for purchase July 27.
Through its trans-Atlantic joint venture with Air France-KLM, Delta already offers non-stop services from Seattle to Paris and Amsterdam.
With the new service to Heathrow, Delta will operate flights to eight non-stop international destinations from Seattle.
In December 2012, Delta and Virgin Atlantic announced Delta’s plans to acquire 49% of Virgin Atlantic.
Last month, the pair one unconditional clearance from the European Commission and the US
Department of Justice to proceed with the investment transaction, and the carriers are awaiting US Department of Transportation approval of antitrust immunity.
