Cheap flights from Seattle (SEA) to Northern Ireland from $425

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 19 — May 261

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 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 2,632,958 searches. Data last updated May 14, 2024.
Check out some of the cheapest American Airlines 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.
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/39:40 amBHD - SEA
1 stop15h 05mAmerican Airlines
Deal found 5/13$695
Tue 10/291:39 pmSEA - BHD
2 stops21h 56mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops24h 17mAmerican Airlines
Deal found 5/13$705
Sat 9/711:33 amSEA - BHD
2 stops19h 32mAmerican Airlines
Sat 9/214:15 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 5/13$750
Sat 9/76:36 amSEA - BHD
2 stops19h 34mAmerican Airlines
Sat 9/219:40 amBHD - SEA
2 stops19h 31mAmerican Airlines
Deal found 5/13$760
Sat 8/101:26 pmSEA - BHD
2 stops17h 39mAmerican Airlines
Sat 8/244:15 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 5/13$795
Sat 8/101:26 pmSEA - BHD
2 stops17h 39mAmerican Airlines
Sat 8/246:50 amBHD - SEA
2 stops20h 30mAmerican Airlines
Deal found 5/13$805
Fri 10/411:33 amSEA - BHD
2 stops18h 07mAmerican Airlines
Tue 10/89:45 amBHD - SEA
2 stops19h 26mAmerican Airlines
Deal found 5/13$910
Sat 8/1011:38 pmSEA - BHD
2 stops27h 52mAmerican Airlines
Sun 8/185:35 pmBHD - SEA
2 stops33h 45mAmerican Airlines
Deal found 5/14$966
Sat 8/1011:38 pmSEA - BHD
2 stops29h 22mAmerican Airlines
Sun 8/185:35 pmBHD - SEA
2 stops33h 45mAmerican Airlines
Deal found 5/13$972

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 2,632,958 searches. Data last updated May 14, 2024.
Have a look at some of the cheapest available British Airways flights departing from Seattle and landing in Northern Ireland. Check back soon if you're not seeing flights that suit your needs.
Tue 10/292:35 pmSEA - BHD
1 stop13h 05mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/13$690
Fri 10/41:30 pmSEA - BHD
1 stop16h 10mBritish Airways
Tue 10/86:35 amBHD - SEA
1 stop13h 00mBritish Airways
Deal found 5/12$718
Sat 9/147:40 pmSEA - BHD
1 stop13h 10mBritish Airways
Sat 9/289:40 amBHD - SEA
2 stops19h 31mBritish Airways
Deal found 5/13$755
Sat 9/147:40 pmSEA - BHD
1 stop13h 10mBritish Airways
Sat 9/284:15 pmBHD - SEA
1 stop33h 30mBritish Airways
Deal found 5/13$770
Fri 10/411:33 amSEA - BHD
2 stops19h 52mBritish Airways
Tue 10/86:35 amBHD - SEA
1 stop19h 10mBritish Airways
Deal found 5/13$825
Sat 9/77:40 pmSEA - BHD
1 stop12h 45mBritish Airways
Sat 9/216:50 amBHD - SEA
1 stop12h 45mBritish Airways
Deal found 5/13$873
Sun 5/261:40 pmSEA - BHD
1 stop15h 20mBritish Airways
Sun 6/26:50 amBHD - SEA
2 stops24h 15mBritish Airways
Deal found 5/13$902
Sun 5/2611:59 pmSEA - BHD
2 stops24h 56mBritish Airways
Sun 6/26:50 amBHD - SEA
2 stops24h 15mBritish Airways
Deal found 5/13$907
Sun 5/261:40 pmSEA - BHD
1 stop15h 20mBritish Airways
Sun 6/27:35 pmBHD - SEA
1 stop30h 10mBritish Airways
Deal found 5/13$978

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 2,632,958 searches. Prices were last updated on May 14, 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.
Sun 5/261:40 pmSEA - BHD
1 stop15h 20mBritish Airways
Sun 6/26:50 amBHD - SEA
2 stops24h 15mBritish Airways
Deal found 5/13$902
Sun 5/2611:59 pmSEA - BHD
2 stops24h 56mBritish Airways
Sun 6/26:50 amBHD - SEA
2 stops24h 15mBritish Airways
Deal found 5/13$907
Sun 5/261:40 pmSEA - BHD
1 stop15h 20mBritish Airways
Sun 6/27:35 pmBHD - SEA
1 stop30h 10mBritish Airways
Deal found 5/13$978
Sun 5/267:00 amSEA - BFS
2 stops30h 00mMultiple Airlines
Sun 6/27:45 amBFS - SEA
3 stops20h 35mMultiple Airlines
Deal found 5/13$1,198
Sun 5/265:50 amSEA - BFS
3 stops31h 10mMultiple Airlines
Sun 6/27:45 amBFS - SEA
3 stops20h 35mMultiple Airlines
Deal found 5/13$1,229
Sun 5/267:00 amSEA - BHD
2 stops30h 10mMultiple Airlines
Sun 6/27:10 amBHD - SEA
3 stops21h 10mMultiple Airlines
Deal found 5/13$1,314
Thu 6/201:30 pmSEA - BHD
1 stop13h 30mBritish Airways
Fri 7/58:05 pmBHD - SEA
2 stops31h 16mBritish Airways
Deal found 5/14$1,315
Thu 6/201:25 pmSEA - BHD
2 stops16h 05mBritish Airways
Fri 7/58:05 pmBHD - SEA
2 stops34h 23mBritish Airways
Deal found 5/14$1,335
Sun 5/267:00 amSEA - BFS
2 stops30h 00mMultiple Airlines
Sun 6/27:05 amBFS - SEA
2 stops17h 56mMultiple Airlines
Deal found 5/13$1,345

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 2,632,958 searches. Data last updated May 14, 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 10/292:35 pmSEA - BHD
1 stop13h 05mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/13$690
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/39:40 amBHD - SEA
1 stop15h 05mAmerican Airlines
Deal found 5/13$695
Tue 10/291:39 pmSEA - BHD
2 stops21h 56mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops24h 17mAmerican Airlines
Deal found 5/13$705
Fri 10/41:30 pmSEA - BHD
1 stop16h 10mBritish Airways
Tue 10/86:35 amBHD - SEA
1 stop13h 00mBritish Airways
Deal found 5/12$718
Sat 9/711:33 amSEA - BHD
2 stops19h 32mAmerican Airlines
Sat 9/214:15 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 5/13$750
Sat 9/147:40 pmSEA - BHD
1 stop13h 10mBritish Airways
Sat 9/289:40 amBHD - SEA
2 stops19h 31mBritish Airways
Deal found 5/13$755
Sat 9/76:36 amSEA - BHD
2 stops19h 34mAmerican Airlines
Sat 9/219:40 amBHD - SEA
2 stops19h 31mAmerican Airlines
Deal found 5/13$760
Sat 9/147:40 pmSEA - BHD
1 stop13h 10mBritish Airways
Sat 9/284:15 pmBHD - SEA
1 stop33h 30mBritish Airways
Deal found 5/13$770
Sat 8/101:26 pmSEA - BHD
2 stops17h 39mAmerican Airlines
Sat 8/244:15 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 5/13$795

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 2,632,958 searches. Data last updated May 14, 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 5/13$425
Fri 7/2611:00 pmSEA - BHD
2 stops34h 20mMultiple Airlines
Deal found 5/13$457
Sat 7/62:51 pmSEA - BFS
3 stops56h 49mMultiple Airlines
Deal found 5/13$464
Fri 7/2611:00 pmSEA - BFS
3 stops36h 35mMultiple Airlines
Deal found 5/13$466
Sat 7/62:51 pmSEA - BHD
3 stops45h 54mMultiple Airlines
Deal found 5/13$497
Tue 5/285:50 amSEA - BHD
3 stops31h 20mMultiple Airlines
Deal found 5/13$511
Tue 5/289:35 amSEA - BHD
3 stops48h 05mMultiple Airlines
Deal found 5/14$523
Tue 5/289:40 pmSEA - BFS
3 stops56h 55mMultiple Airlines
Deal found 5/14$558
Sat 7/67:40 amSEA - BHD
2 stops29h 05mMultiple Airlines
Deal found 5/13$563

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 2,632,958 searches. Data last updated May 14, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$690 - $1,198

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

1 stop13h 05m

Belfast City

Sun 11/3

1 stop15h 05m

$690

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops21h 40m

Belfast City

Sun 11/3

1 stop15h 05m

$695

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops21h 56m

Belfast City

Sun 11/3

2 stops24h 17m

$705

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 10/4

1 stop16h 10m

Belfast City

Tue 10/8

1 stop13h 00m

$718

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/7

2 stops19h 32m

Belfast City

Sat 9/21

1 stop27h 15m

$750

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/14

1 stop13h 10m

Belfast City

Sat 9/28

2 stops19h 31m

$755

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 10/4

2 stops19h 15m

Belfast City

Tue 10/8

1 stop31h 30m

$809

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 10/4

2 stops25h 30m

Belfast City

Tue 10/8

2 stops37h 00m

$876

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Sun 5/26

2 stops30h 00m

Belfast Intl

Sun 6/2

3 stops20h 35m

$1,198

Flights are sorted by cheapest first

Deals found on 5/13

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 14, 2024.
Get a feel of what it's like to fly with American Airlines, British Airways and Lufthansa 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.
8.0
Very good
10,706 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

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.

8.0
Very good
10,706 reviews
8.0
Very good
10,706 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

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.

7.3
Good
14,561 reviews
8.0
Very good
10,706 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

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.

7.0
Good
7,666 reviews
8.0
Very good
10,706 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

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.

6.8
Okay
6,837 reviews
8.0
Very good
10,706 reviews

Boarding

8.2

Food

7.4

Comfort

7.9

Entertainment

8.0

Overall

8.0

Crew

8.6

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 $690, but on average you can expect to pay $821.

  • 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 5/13.

See more FAQs

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

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 2,632,958 searches. Data last updated May 14, 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

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.

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.

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