Cheap flights from Seattle, WA to Donostia / San Sebastián, Spain

Travelers frequently search for route combinations, such as Seattle and Denver, Las Vegas, Mexico City, Orlando, Atlanta, Austin, London, Houston, Paris, Barcelona, Rome, Los Angeles, Phoenix, Washington, D.C., Detroit, Madrid, Dublin, Minneapolis, Cleveland, Guadalajara.

Travelers frequently search for route combinations, such as Donostia / San Sebastián and New York, Los Angeles, Barcelona, Madrid, San Francisco, Boston, Chicago, Prague, Amsterdam, Palma, Majorca, Lisbon, Dublin, Marrakesh, Tampa, Naples, Berlin, Zagreb, Porto, Denver, Dallas.

Seattle is mainly served by Seattle–Tacoma International. But there are other airports nearby, including Kenmore Air Harbor Seaplane Base, Boeing Field.

The main airport in Seattle is Seattle–Tacoma International. It is also served by Vancouver International, Portland International, Abbotsford International, Bellingham International, Paine Field Everett, Vancouver Harbour Flight Centre, Yakima Air Terminal, Victoria Inner Harbour SPB, Pangborn Memorial.

The main airport in Donostia / San Sebastián is San Sebastián. It is also served by Bilbao, Bordeaux–Mérignac, San Sebastián, Tarbes–Lourdes–Pyrénées, Santander, Biarritz Pays Basque, Pamplona, Zaragoza, Pau Pyrénées, Vitoria.

Yes, it's possible to combine different modes of transport between Seattle and Donostia / San Sebastián thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Seattle and Donostia / San Sebastián can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between Seattle and Donostia / San Sebastián with Alaska Airlines, Vueling, Iberia Airlines, WestJet, Volotea.

If you don’t have specific dates for your trip between Seattle and Donostia / San Sebastián, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.