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Cheap flights from Seattle (SEA) to Northern Ireland from $434

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 5/27. 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 13 — May 201
From?
To?
Mon 5/13
Mon 5/20
1 adult, Economy
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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 2,749,864 searches. Data last updated May 8, 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.
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/7$691
Fri 10/47:40 pmSEA - BHD
1 stop14h 30mBritish Airways
Tue 10/84:20 pmBHD - SEA
1 stop27h 15mBritish Airways
Deal found 5/7$719
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mBritish Airways
Wed 6/126:15 pmBHD - SEA
1 stop25h 15mBritish Airways
Deal found 5/7$727
Tue 9/177:40 pmSEA - BHD
1 stop15h 15mBritish Airways
Sat 9/286:55 pmBHD - SEA
1 stop30h 50mBritish Airways
Deal found 5/7$744
Tue 9/1711:33 amSEA - BHD
2 stops23h 22mBritish Airways
Sat 9/286:55 pmBHD - SEA
1 stop30h 50mBritish Airways
Deal found 5/7$749
Fri 10/47:40 pmSEA - BHD
1 stop14h 30mBritish Airways
Tue 10/87:30 pmBHD - SEA
1 stop24h 05mBritish Airways
Deal found 5/6$759
Fri 10/411:33 amSEA - BHD
2 stops18h 07mBritish Airways
Tue 10/81:40 pmBHD - SEA
1 stop29h 55mBritish Airways
Deal found 5/7$826
Sat 8/107:40 pmSEA - BHD
1 stop15h 15mBritish Airways
Sun 8/187:40 pmBHD - SEA
2 stops31h 40mBritish Airways
Deal found 5/7$829
Sat 8/107:40 pmSEA - BHD
1 stop13h 10mBritish Airways
Sun 8/185:35 pmBHD - SEA
1 stop32h 10mBritish Airways
Deal found 5/7$947

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 2,749,864 searches. Data last updated May 8, 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.
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/35:35 amBHD - SEA
1 stop18h 10mAmerican Airlines
Deal found 5/7$696
Tue 10/291:39 pmSEA - BHD
2 stops21h 56mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 5/7$706
Tue 9/1711:33 amSEA - BHD
2 stops17h 22mAmerican Airlines
Sat 9/286:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Deal found 5/7$730
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mAmerican Airlines
Wed 6/129:50 amBHD - SEA
2 stops20h 07mAmerican Airlines
Deal found 5/7$737
Thu 7/48:00 amSEA - BHD
2 stops19h 00mAmerican Airlines
Sun 7/146:50 amBHD - SEA
2 stops23h 08mAmerican Airlines
Deal found 5/7$1,295

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 2,749,864 searches. Prices were last updated on May 8, 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.
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mBritish Airways
Wed 6/126:15 pmBHD - SEA
1 stop25h 15mBritish Airways
Deal found 5/7$727
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mAmerican Airlines
Wed 6/129:50 amBHD - SEA
2 stops20h 07mAmerican Airlines
Deal found 5/7$737
Wed 6/56:05 pmSEA - BHD
1 stop14h 45mDelta
Wed 6/125:20 pmBHD - SEA
1 stop31h 15mDelta
Deal found 5/7$776
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:55 pmBFS - SEA
3 stops32h 40mMultiple Airlines
Deal found 5/7$996
Wed 6/56:55 pmSEA - BHD
3 stops30h 35mMultiple Airlines
Wed 6/126:35 amBHD - SEA
3 stops22h 00mMultiple Airlines
Deal found 5/7$1,065
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/122:45 pmBFS - SEA
1 stop30h 25mMultiple Airlines
Deal found 5/7$1,118
Wed 6/57:00 amSEA - BHD
2 stops30h 10mMultiple Airlines
Wed 6/127:05 amBHD - SEA
3 stops33h 27mMultiple Airlines
Deal found 5/7$1,128
Wed 6/57:00 amSEA - BFS
2 stops24h 30mMultiple Airlines
Wed 6/127:05 amBFS - SEA
2 stops18h 35mMultiple Airlines
Deal found 5/7$1,299
Wed 6/262:15 pmSEA - BHD
1 stop16h 35mLufthansa
Thu 7/43:35 pmBHD - SEA
1 stop28h 40mLufthansa
Deal found 5/7$1,414

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 2,749,864 searches. Data last updated May 8, 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.
Wed 9/1811:33 amSEA - BHD
2 stops20h 02mAmerican Airlines
Wed 9/256:50 amBHD - SEA
1 stop18h 55mAmerican Airlines
Deal found 5/8$651
Wed 9/1811:33 amSEA - BHD
2 stops20h 02mAmerican Airlines
Wed 9/2511:50 amBHD - SEA
2 stops18h 55mAmerican Airlines
Deal found 5/8$661
Tue 10/297:45 pmSEA - BHD
1 stop15h 50mBritish Airways
Sun 11/39:40 amBHD - SEA
1 stop15h 05mBritish Airways
Deal found 5/7$691
Tue 10/296:00 amSEA - BHD
2 stops21h 40mAmerican Airlines
Sun 11/35:35 amBHD - SEA
1 stop18h 10mAmerican Airlines
Deal found 5/7$696
Tue 10/291:39 pmSEA - BHD
2 stops21h 56mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 5/7$706
Fri 10/47:40 pmSEA - BHD
1 stop14h 30mBritish Airways
Tue 10/84:20 pmBHD - SEA
1 stop27h 15mBritish Airways
Deal found 5/7$719
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mBritish Airways
Wed 6/126:15 pmBHD - SEA
1 stop25h 15mBritish Airways
Deal found 5/7$727
Tue 9/1711:33 amSEA - BHD
2 stops17h 22mAmerican Airlines
Sat 9/286:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Deal found 5/7$730
Wed 6/51:25 pmSEA - BHD
2 stops18h 10mAmerican Airlines
Wed 6/129:50 amBHD - SEA
2 stops20h 07mAmerican Airlines
Deal found 5/7$737

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 2,749,864 searches. Data last updated May 8, 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.
Mon 5/277:00 amSEA - BHD
2 stops30h 10mMultiple Airlines
Deal found 5/7$434
Wed 6/52:15 pmSEA - BHD
1 stop16h 35mLufthansa
Deal found 5/7$449
Tue 5/281:50 pmSEA - BHD
3 stops35h 15mMultiple Airlines
Deal found 5/7$455
Mon 5/277:00 amSEA - BHD
3 stops29h 55mMultiple Airlines
Deal found 5/7$462
Wed 10/162:15 pmSEA - BHD
1 stop16h 35mLufthansa
Deal found 5/7$468
Wed 10/1610:40 amSEA - BHD
2 stops20h 10mLufthansa
Deal found 5/7$469
Fri 7/2611:00 pmSEA - BFS
3 stops37h 10mMultiple Airlines
Deal found 5/7$477
Wed 6/57:00 amSEA - BFS
3 stops31h 00mMultiple Airlines
Deal found 5/7$493
Sun 5/261:50 pmSEA - BHD
2 stops35h 25mMultiple Airlines
Deal found 5/7$494

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 2,749,864 searches. Data last updated May 8, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$691 - $1,457

Route

Depart

Return

Price

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 stops21h 40m

Belfast City

Sun 11/3

1 stop18h 10m

$696

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops21h 56m

Belfast City

Sun 11/3

2 stops21h 53m

$706

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 10/4

1 stop14h 30m

Belfast City

Tue 10/8

1 stop27h 15m

$719

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 6/5

1 stop14h 45m

Belfast City

Wed 6/12

1 stop31h 15m

$776

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 10/3

2 stops32h 20m

Belfast City

Tue 10/8

1 stop25h 15m

$792

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 9/17

2 stops21h 20m

Belfast Intl

Sat 9/28

3 stops39h 38m

$951

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 6/26

1 stop16h 35m

Belfast City

Thu 7/4

1 stop28h 40m

$1,414

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 6/24

1 stop14h 45m

Belfast City

Tue 7/2

1 stop24h 55m

$1,457

Flights are sorted by cheapest first

Deals found on 5/7

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 8, 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
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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
8.1
Very good
10,810 reviews
Delta
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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.

KLM
7.9
Good
1,598 reviews
Delta
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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.

Air France
7.5
Good
1,779 reviews
Delta
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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
14,686 reviews
Delta
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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.

Iberia
7.1
Good
2,748 reviews
Delta
8.1
Very good
10,810 reviews
Check prices

Comfort

7.9

Boarding

8.2

Crew

8.6

Entertainment

8.0

Overall

8.1

Food

7.4

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 $691, but on average you can expect to pay $795.

  • What are the cheapest airlines to fly from Seattle to Northern Ireland one-way?

    To fly one-way, consider booking your trip with Lufthansa, which is currently one of the cheapest options available, starting at $449. Delta flights start at $598 while deals on British Airways start at $684 one-way.

  • 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 5/8.

See more FAQs

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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 2,749,864 searches. Data last updated May 8, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$642Average$926FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
British AirwaysCheapest$675Average$1,103FlexibilityNo cancel feeOn-time70%
Search British Airways flights
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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

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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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