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BFS - SEA

Find cheap flights from Belfast Intl Airport to Seattle from £960

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Belfast Intl to Seattle departing on 15/6. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 12/6
Wed 19/6

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Belfast to Seattle, as well as popular online travel agencies
In the last 7 days, travellers have searched 41,771,603 times on KAYAK, and here's why:

Save 28% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Belfast Intl to Seattle (BFS-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Belfast Intl to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
07:10 - 20:21BFS-SEA
21h 11m2 stops
13:50 - 09:30SEA-BFS
35h 40m2 stops
£960
Find Deal
Sat, 15 Jun - Sat, 17 Aug
07:10 - 20:21BFS-SEA
21h 11m2 stops
13:50 - 09:30SEA-BFS
35h 40m2 stops
£1,278
Find Deal
Sat, 15 Jun - Sat, 17 Aug

Good to know - Cheap tickets from Belfast Intl Airport to Seattle

Cheapest flight

£960
Flight from Belfast Intl Airport to Seattle

When to book flights from Belfast Intl to Seattle

Are your dates flexible? Find out the best times to travel from Belfast Intl to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Belfast Intl Airport to Seattle flights

  • What is the cheapest flight from Belfast Intl Airport to Seattle?

    In the last 3 days, the lowest price for a flight from Belfast Intl Airport to Seattle was £1,203 for a return ticket.

  • Which aircraft models fly most regularly from Belfast Intl Airport to Seattle?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Belfast Intl Airport to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Belfast Intl Airport to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Belfast Intl Airport to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Belfast Intl Airport is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Belfast Intl Airport to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Seattle with an airline and back to Belfast Intl Airport with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Belfast Intl Airport to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Belfast Intl Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from Belfast Intl to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Belfast to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Belfast Intl to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
6.8
British AirwaysOverall score based on 6841 reviews
7.7Crew
6.8Comfort
7.0Boarding
6.5Entertainment
6.4Food
Airline reviews

I would have preferred something lighter for the second meal. Maybe a small sandwich .

8.0 ExcellentAnonymous, May 2024LHR - PHX
Read more about British Airways reviews

I would have preferred something lighter for the second meal. Maybe a small sandwich .

They cancelled our flight the morning of departure at 4:30am.

my original flight was cancelled the previous day, and i was rescheduled onto this flight, which left much earlier in the morning, impacting my previous evening and requiring me to get up much earlier in the morning to get to the airport online. This practice happens way way way too much, and it seems on every airline, though AA is probably the worst.

The crew was very attentive and kept busy serving a variety of treats!

Offered vegetable curry when it was actually tofu which I don’t care for.

The flight was good the crew excellent…but take off delayed three hours!!!

Both mine and my husband's chairs were broken. Also it took 2 hours to get our bags after our flight which was wild.

perhaps eye contact with the cabin crew, instead of abruptness and an impatience to serve.

Not enough trash pickups throughout the flight. Everything else was great.

Overall good, the gluten free food is very hit/miss though and you must tell them you have an allergy days in advance.

Belfast Intl Airport - Seattle Flights

Departure:

Belfast Intl Airport (undefined)United Kingdom

Destination:

Seattle (SEA)United States

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