
Alaska Airlines Flights Between Seattle and London
Alaska Airlines today started selling tickets for one of its new routes. You can now book your flights from Seattle (SEA) to London (LHR). The carrier will offer daily, year-round service between Seattle and London Heathrow on board its widebody, long-haul 787 Dreamliner aircraft.
The first flight from Seattle to London Heathrow is scheduled for May 21, 2026, departing at 9:40 p.m. and landing at 3:05 p.m. (+1). The return flight departs from London Heathrow at 5:00 p.m. and lands in Seattle at 6:50 p.m.
Alaska will operate out of London Heathrow’s Terminal 3, which facilitates convenient connections to additional destinations across Europe and beyond on oneworld member airlines and other global partners.
Alaska says that guests traveling from the U.S. can now purchase airfares to London for as low as $699 roundtrip at alaskaair.com, just in time for summertime travel. But summer flights are currently priced way higher that that. You can also book using Atmos Rewards, but it will cost you 30,000 points one-way in Economy plus taxes and fees.
Alaska recently announced new service from Seattle to Rome which is now available for booking, along with new nonstop flights to Reykjavik, Iceland.


