HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Seattle (SEA) to Northern Ireland from $433

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/26. 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.
SEA — BFS
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

What is the cheapest month to fly from Seattle to Northern Ireland?

Our data shows that April tends to be the cheapest month to fly to Northern Ireland from Seattle. Users have commonly found prices around $1,037 for the month, but tickets can be as low as $719. Due to multiple factors, prepare for potentially higher prices in June.

When is the cheapest time to fly from Seattle to Northern Ireland (SEA - NIR)?

When flying from Seattle to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap British Airways flights from Seattle to Northern Ireland

Explore cheap flight options specifically provided by British Airways for the route between Seattle and Northern Ireland. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Check out some of the cheapest British Airways flights we've come across from Seattle to Northern Ireland. Come back soon if you're not finding the exact deal you're looking for.
Thu 10/107:40 pmSEA - BHD
1 stop11h 55mBritish Airways
Fri 11/16:50 amBHD - SEA
1 stop17h 55mBritish Airways
Deal found 5/15$651
Thu 10/107:40 pmSEA - BHD
1 stop14h 00mBritish Airways
Fri 11/16:50 amBHD - SEA
2 stops20h 38mBritish Airways
Deal found 5/15$661
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/16$691
Fri 10/47:40 pmSEA - BHD
1 stop14h 30mBritish Airways
Tue 10/84:20 pmBHD - SEA
1 stop27h 15mBritish Airways
Deal found 5/15$719
Sat 8/241:50 pmSEA - BHD
1 stop12h 20mBritish Airways
Sun 9/111:20 amBHD - SEA
2 stops18h 36mBritish Airways
Deal found 5/15$756
Sat 9/147:40 pmSEA - BHD
1 stop15h 15mBritish Airways
Sat 9/286:55 pmBHD - SEA
1 stop30h 50mBritish Airways
Deal found 5/15$771
Sat 8/241:50 pmSEA - BHD
1 stop14h 30mBritish Airways
Sun 9/16:50 amBHD - SEA
1 stop18h 55mBritish Airways
Deal found 5/15$868
Sat 9/77:40 pmSEA - BHD
1 stop12h 45mBritish Airways
Sat 9/216:50 amBHD - SEA
1 stop12h 45mBritish Airways
Deal found 5/15$874
Sat 8/101:26 pmSEA - BHD
2 stops17h 39mBritish Airways
Sun 8/187:40 pmBHD - SEA
1 stop23h 55mBritish Airways
Deal found 5/15$952

Cheap American Airlines flights from Seattle to Northern Ireland

Explore cheap flight options specifically provided by American Airlines for the route between Seattle and Northern Ireland. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Have a look at some of the cheapest available American Airlines flights departing from Seattle and landing in Northern Ireland. Check back soon if you're not seeing flights that suit your needs.
Thu 10/107:37 amSEA - BHD
2 stops19h 23mAmerican Airlines
Fri 11/16:50 amBHD - SEA
2 stops23h 02mAmerican Airlines
Deal found 5/15$671
Tue 10/291:39 pmSEA - BHD
2 stops20h 01mAmerican Airlines
Sun 11/33:05 pmBHD - SEA
1 stop33h 40mAmerican Airlines
Deal found 5/15$696
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 5/15$706
Sat 9/711:33 amSEA - BHD
2 stops19h 32mAmerican Airlines
Sat 9/216:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Deal found 5/15$751
Sat 8/241:26 pmSEA - BHD
2 stops19h 24mAmerican Airlines
Sun 9/16:50 amBHD - SEA
2 stops23h 06mAmerican Airlines
Deal found 5/15$761
Sat 8/101:26 pmSEA - BHD
2 stops18h 59mAmerican Airlines
Sat 8/244:15 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 5/15$796
Sat 8/101:26 pmSEA - BHD
2 stops17h 39mAmerican Airlines
Sat 8/246:50 amBHD - SEA
2 stops20h 30mAmerican Airlines
Deal found 5/15$806
Tue 5/281:22 pmSEA - BHD
2 stops20h 03mAmerican Airlines
Tue 6/46:35 amBHD - SEA
2 stops24h 30mAmerican Airlines
Deal found 5/16$930

Cheap Seattle to Northern Ireland flights in May & June 2024

Find cheap flight options from Seattle to Northern Ireland specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
The lowest fares we've come across on flights traveling from Seattle to Northern Ireland in May and June 2024. Check back soon for alternative fares.
Tue 5/286:10 pmSEA - BHD
1 stop14h 40mDelta
Tue 6/45:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/16$912
Tue 5/2812:00 pmSEA - BHD
2 stops20h 50mDelta
Tue 6/45:20 pmBHD - SEA
1 stop25h 00mDelta
Deal found 5/16$917
Tue 5/281:22 pmSEA - BHD
2 stops20h 03mAmerican Airlines
Tue 6/46:35 amBHD - SEA
2 stops24h 30mAmerican Airlines
Deal found 5/16$930

Seattle to Northern Ireland 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Northern Ireland in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
The lowest fares we've come across on flights traveling from Seattle to Northern Ireland in May and June 2024. Check back soon for alternative fares.
Thu 10/107:40 pmSEA - BHD
1 stop11h 55mBritish Airways
Fri 11/16:50 amBHD - SEA
1 stop17h 55mBritish Airways
Deal found 5/15$651
Thu 10/107:40 pmSEA - BHD
1 stop14h 00mBritish Airways
Fri 11/16:50 amBHD - SEA
2 stops20h 38mBritish Airways
Deal found 5/15$661
Thu 10/107:37 amSEA - BHD
2 stops19h 23mAmerican Airlines
Fri 11/16:50 amBHD - SEA
2 stops23h 02mAmerican Airlines
Deal found 5/15$671
Tue 10/297:45 pmSEA - BHD
1 stop13h 55mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/15$691
Tue 10/291:39 pmSEA - BHD
2 stops20h 01mAmerican Airlines
Sun 11/33:05 pmBHD - SEA
1 stop33h 40mAmerican Airlines
Deal found 5/15$696
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 5/15$706
Fri 10/47:40 pmSEA - BHD
1 stop14h 30mBritish Airways
Tue 10/84:20 pmBHD - SEA
1 stop27h 15mBritish Airways
Deal found 5/15$719
Sat 9/711:33 amSEA - BHD
2 stops19h 32mAmerican Airlines
Sat 9/216:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Deal found 5/15$751
Thu 10/312:30 amSEA - BHD
2 stops32h 20mDelta
Tue 10/85:20 pmBHD - SEA
1 stop31h 30mDelta
Deal found 5/15$753

One-way flights to Northern Ireland from Seattle

Search for one-way flight options from Seattle to Northern Ireland. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a look at some of the best available options we've come across on one-way flights from Seattle to Northern Ireland. Users can also find round-trip Seattle to Northern Ireland flights by using the search form above.
Fri 7/266:15 pmSEA - BFS
2 stops40h 50mMultiple Airlines
Deal found 5/15$433
Tue 5/289:35 amSEA - BHD
3 stops48h 05mMultiple Airlines
Deal found 5/16$519
Tue 5/289:35 amSEA - BHD
3 stops48h 05mMultiple Airlines
Deal found 5/15$557
Tue 5/289:40 pmSEA - BFS
3 stops57h 40mMultiple Airlines
Deal found 5/15$564
Fri 7/266:10 pmSEA - BHD
1 stop14h 40mDelta
Deal found 5/15$588
Fri 7/2611:30 amSEA - BHD
2 stops21h 20mDelta
Deal found 5/15$593
Tue 5/288:14 pmSEA - BHD
2 stops39h 46mMultiple Airlines
Deal found 5/14$663
Tue 5/281:30 pmSEA - BHD
1 stop13h 05mAmerican Airlines
Deal found 5/15$684
Tue 5/281:22 pmSEA - BHD
2 stops20h 03mAmerican Airlines
Deal found 5/15$689

Find flights from Seattle to Northern Ireland within your budget

Customize your flight search to find flights from Seattle to Northern Ireland that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$651 - $1,113

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/10

1 stop11h 55m

Belfast City

Fri 11/1

1 stop17h 55m

$651

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/10

1 stop14h 00m

Belfast City

Fri 11/1

2 stops20h 38m

$661

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/10

2 stops19h 23m

Belfast City

Fri 11/1

2 stops23h 02m

$671

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

1 stop15h 50m

Belfast City

Sun 11/3

1 stop15h 05m

$691

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops20h 01m

Belfast City

Sun 11/3

1 stop33h 40m

$696

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops21h 40m

Belfast City

Sun 11/3

2 stops21h 53m

$706

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/3

2 stops32h 20m

Belfast City

Tue 10/8

1 stop31h 30m

$753

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 10/4

2 stops19h 15m

Belfast City

Tue 10/8

1 stop31h 30m

$781

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/10

2 stops20h 55m

Belfast City

Fri 11/1

3 stops31h 16m

$1,113

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated May 16, 2024.
Get a feel of what it's like to fly with British Airways, American Airlines and Delta from Seattle to Northern Ireland by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,673 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,514 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

British Airways
6.8
Okay
6,829 reviews
Delta
8.0
Very good
10,673 reviews
Check prices

Entertainment

8.0

Boarding

8.2

Comfort

7.9

Food

7.4

Crew

8.6

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Northern Ireland?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Northern Ireland.

  • Can I find flights from Seattle to Northern Ireland for under $700 on Cheapflights?

    Yes, there are multiple flights from Seattle to Northern Ireland for under $700. The cheapest flight booked recently is on British Airways for just $651, but on average you can expect to pay $772.

  • What does SEA to BFS mean?

    Seattle/Tacoma Intl Airport is SEA and Belfast Intl Airport is BFS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Belfast City Airport (BHD), Londonderry Eglinton Airport (LDY).

  • Can I find deals for flights from Seattle to Northern Ireland that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Northern Ireland flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Northern Ireland with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Northern Ireland flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from Seattle to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Seattle to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Northern Ireland.

  • Can I find deals for business class flights from Seattle to Northern Ireland?

    Yes. Cheapflights offers flight deals from Seattle to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Seattle to Northern Ireland that allow pets onboard?

    Many airlines flying from Seattle to Northern Ireland offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Northern Ireland?

    Yes, you can often find last-minute deals on Seattle to Northern Ireland flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Northern Ireland flight deals updated?

    The Seattle to Northern Ireland flight deals you see on this page were last updated on 5/15.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Northern Ireland
See prices for flight routes from nearby airports that may be better suited for you.

Seattle to Heathrow flights
Seattle to Gatwick flights
Seattle to London City flights
Portland to Heathrow flights
Portland to Gatwick flights
Portland to London City flights
Seattle to Luton flights
Seattle to Edinburgh flights
Seattle to Glasgow Intl flights
Portland to Edinburgh flights
Portland to Luton flights
Spokane to Heathrow flights
Portland to Glasgow Intl flights
Seattle to Stansted flights
Seattle to Manchester flights
Seattle to Aberdeen flights
Seattle to Birmingham flights
Seattle to Belfast Intl flights
Spokane to Gatwick flights
Seattle to Belfast City flights
Portland to Stansted flights
Spokane to London City flights
Seattle to Inverness flights
Seattle to Cardiff flights
Portland to Manchester flights
Spokane to Glasgow Intl flights
Portland to Inverness flights
Portland to Belfast Intl flights
Spokane to Edinburgh flights
Seattle to Southampton flights
Portland to Aberdeen flights
Pasco to Heathrow flights
Seattle to Southend flights
Bellingham to Heathrow flights
Seattle to Leeds flights
Seattle to Liverpool flights
Seattle to Newquay flights
Spokane to Southampton flights
Spokane to Manchester flights
Portland to Leeds flights
Seattle to Darlington flights
Walla Walla to Heathrow flights
Portland to Southend flights
Seattle to Grimsby flights
Seattle to Bristol flights
Portland to Bristol flights
Seattle to Newcastle upon Tyne flights
Portland to Sumburgh/Shetland flights
Bellingham to Gatwick flights

Top 2 airlines flying from Seattle to Northern Ireland

Discover the top 2 airlines that operate flights from Seattle to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$641Average$805FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$667Average$1,022FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Orlando to Seattle flights
Orlando to Las Vegas flights
Houston to Seattle flights
Newark Airport to Punta Cana flights
New Jersey to Florida flights
Boston to Washington, D.C. flights
Pittsburgh to Las Vegas flights
Seattle to Anchorage flights
Los Angeles to Seoul flights
New York to Fort Lauderdale flights
Chicago to Denver flights
Seattle to Scotland flights

Search flights from Seattle to Northern Ireland by cabin class

Find flights from Seattle to Northern Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Northern Ireland?

Cheapflights helps you search for flights from Seattle to Northern Ireland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Northern Ireland?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Northern Ireland from Seattle.

Can Cheapflights find flights from Seattle to Northern Ireland with no change fees?

Certainly. Search results for flights to Northern Ireland from Seattle shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Seattle to Northern Ireland become cheaper?

Not ready to book yet? You can track prices for flights from Seattle to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines