Cheap flights from Seattle (SEA) to Belfast from $562

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Belfast as you normally would.

If you book a flight to Belfast from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Seattle/Tacoma Intl to Belfast per day from 1 airline.

Some of our airline partners flying from Seattle/Tacoma Intl to Belfast have new flexible policies in place due to COVID-19. British Airways is one of the carriers where you may find flexible change policies. You can use our site to filter for airlines like British Airways with this kind of flexibility.

Yes, there are multiple flights from Seattle to Belfast for under $1,000. The cheapest flight booked recently is on American Airlines for just $999, but on average you can expect to pay $1,147.

While on average a flight from Seattle to Belfast is generally $1,301, our data shows the cheapest flight currently is $589. When looking at the most popular route, (Seattle/Tacoma Intl - Belfast Intl), you can expect to pay $693 for that flight.

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Seattle/Tacoma Intl Airport to Belfast Intl Airport flight would often be abbreviated as a SEA to BFS flight. Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL) are some additional IATA codes for airports related to your trip.