Cheap flights from Belfast to Seattle from $628

Travelers frequently search for route combinations, such as Belfast and New York, London, Edinburgh, Manchester, Antalya, Alicante, Enfidha, Tirana, Nottingham, Madrid, Barcelona, Málaga, Birmingham, New Delhi, Reykjavik, Glasgow, Milan, Paris, Warsaw, Tel Aviv.

Travelers frequently search for route combinations, such as Seattle and New York, Los Angeles, Mexico City, San Francisco, Guadalajara, Las Vegas, Phoenix, Calgary, Ontario, Denver, Chicago, San Diego, Washington, D.C., Dallas, Boston, Salt Lake City, Orlando, Houston, London, Honolulu.

Belfast is mainly served by Belfast International. But there are other airports nearby, including George Best Belfast City.

The main airport in Belfast is Belfast International. It is also served by Dublin, Isle of Man, Ireland West Airport Knock, Glasgow Prestwick, City of Derry, Donegal.

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

Currently, you can fly between Belfast and Seattle with Ryanair, easyJet, JetBlue Airways, Icelandair, Alaska Airlines.

If you don’t have specific dates for your trip between Belfast and Seattle, 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.

Traveling between Belfast and Seattle, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Belfast. The main one is Belfast International and other nearby airports include Dublin, Isle of Man, Ireland West Airport Knock, Glasgow Prestwick, City of Derry, Donegal