A daily flight to London will operate year-round, while a Reykjavik route will be available during the “summer season.”

London and Reykjavik will be the fourth and fifth widebody international routes for Alaska from SEA, following Tokyo’s launch in May, service to Seoul coming in September, and the previously announced service to Rome coming in spring 2026.

Alaska Airlines is launching new nonstop flights from Seattle to London and Reykjavik, Iceland, beginning next spring.