$650 Find Cheap Flights from Seattle to Northern Ireland

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Northern Ireland departing on 2/24. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Northern Ireland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Northern Ireland, 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 Seattle to Northern Ireland, as well as popular online travel agencies
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Flight Deals

Book Cheap Seattle to Northern Ireland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Northern Ireland 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Northern Ireland

Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
2:35 pm - 5:55 pmSEA-BFS
19h 20m2 stops
Multiple Airlines Logo
6:30 am - 5:00 pmBFS-SEA
18h 30m2 stops
$649Multiple Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
7:20 am - 9:00 pmSEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
6:30 am - 3:35 pmBHD-SEA
17h 05m2 stops
$650Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
7:20 am - 9:00 pmSEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
6:30 am - 11:50 amBHD-SEA
13h 20m1 stop
$688Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
7:20 am - 9:00 pmSEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
6:30 am - 3:35 pmBHD-SEA
17h 05m2 stops
$698Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7
Virgin Atlantic Logo
7:20 am - 9:00 pmSEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
5:20 pm - 11:50 amBHD-SEA
26h 30m1 stop
$740Virgin Atlantic
Find Deal
Wed, Dec 3 - Sun, Dec 7
Delta Logo
3:05 pm - 4:50 pmSEA-BHD
17h 45m1 stop
Delta Logo
5:20 pm - 11:50 amBHD-SEA
26h 30m1 stop
$755Delta
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Sat, Mar 7 - Tue, Mar 17
British Airways Logo
6:50 pm - 7:40 pmSEA-BHD
16h 50m1 stop
British Airways Logo
10:00 am - 5:55 pmBHD-SEA
14h 55m1 stop
$761British Airways
Find Deal
Fri, Mar 27 - Tue, Mar 31
British Airways Logo
2:35 pm - 10:30 amSEA-BHD
12h 55m1 stop
British Airways Logo
8:20 pm - 6:25 pmBHD-SEA
30h 05m1 stop
$773British Airways
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
7:50 pm - 5:15 pmSEA-BHD
14h 25m1 stop
American Airlines Logo
6:35 am - 11:08 pmBHD-SEA
24h 33m2 stops
$981American Airlines
Find Deal
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
7:50 pm - 5:15 pmSEA-BHD
14h 25m1 stop
American Airlines Logo
6:35 am - 11:08 pmBHD-SEA
24h 33m2 stops
$982American Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Seattle to Northern Ireland flights

Get data-powered insights and trends into flights from Seattle to Northern Ireland to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Seattle and Northern Ireland?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Seattle to Northern Ireland.

There is just one airline that flies from Seattle to Northern Ireland direct and that is British Airways. The best round-trip deal found from British Airways for the route is to Belfast Intl Airport (BFS) and costs $737.

Which airlines provide the cheapest flights from Seattle to Northern Ireland?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Seattle to Northern Ireland were found on Virgin Atlantic ($650) and Delta ($755).

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Good to know

Low seasonMarch
Cheapest flight$649
Best time to beat the crowds with an average 22% drop in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Seattle to Belfast Intl Airport

FAQs - booking Northern Ireland flights

  • How does KAYAK find such low prices on flights from Seattle to Northern Ireland?

    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 Seattle to Northern Ireland.

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

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

  • What is the Hacker Fare option on flights from Seattle to Northern Ireland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Seattle to Northern Ireland with an airline and back with another airline.

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

    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 from Seattle to Northern Ireland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Northern Ireland?

    The cheapest time of day to fly to Northern Ireland is generally in the afternoon, when round-trip flights cost $794 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Northern Ireland is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,000.

Reviews of the top airline flying from Seattle to Northern Ireland

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Northern Ireland. 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 Seattle to Northern Ireland? 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.
6.7
British AirwaysOverall score based on 7485 reviews
6.9Boarding
6.7Comfort
7.6Crew
6.3Food
6.4Entertainment
Airline reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

10.0 Excellentshamarcus, Oct 2025SEA - LHR
Read more British Airways reviews

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

I have always been pleased with their service. Would not change a thing

Seating and food was the worst we have experienced in 35 years of traveling for both personal and busines .

Economy seats felt more cramped than other flights we have taken.7 hr, painful sitting hours 6 and 7. Web site difficult to deal with. Originally put in for 1 special meal due to type 2. Meal was awful. Tried to change selection to standard for return flight, on app and website, unable to complete that action.

I was sleeping during dinner service, no one bothered to offer meal later, I remained hungry….until I got a morning sandwich!

Need to offer Better food from LAX to London Service from London to Delhi very delayed after take off.

Everything you need to know for your flight from Seattle to Northern Ireland

Information on your arrival and departure airports

Seattle (SEA)

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