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Cheap flights from Seattle to Northern Ireland from £343

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 26/7. 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
20 mai — 27 mai1
1 adult
ma. 20/5
ma. 27/5

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

The best pricing can be found in the month of April. Prices to Northern Ireland from Seattle average £820. You can even find prices in April for less than £820, as users have found deals to Northern Ireland from as low as £569. The month of June appears to be one of the more expensive times to travel to Northern Ireland from Seattle. Flying in the targeted month can save you up to 40%.

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Northern Ireland as you normally would.

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 849,850 searches. Data last updated 15 mai 2024.
Consider these cheap American Airlines flights we've found departing from Seattle to Northern Ireland. Be sure to come back soon if the deals available don't appeal to you at this time.
ma. 5/813:30SEA - BHD
1 stop15h 20mAmerican Airlines
ma. 16/913:50BHD - SEA
1 stop29h 45mAmerican Airlines
Deal found 14/5£511
ma. 5/813:29SEA - BHD
2 stops19h 56mAmerican Airlines
ma. 16/912:20BHD - SEA
1 stop31h 15mAmerican Airlines
Deal found 14/5£514
to. 10/1007:37SEA - BHD
2 stops19h 23mAmerican Airlines
fr. 1/1106:50BHD - SEA
2 stops23h 02mAmerican Airlines
Deal found 15/5£531
lø. 7/911:33SEA - BHD
2 stops19h 32mAmerican Airlines
lø. 21/906:50BHD - SEA
1 stop12h 45mAmerican Airlines
Deal found 15/5£594
ma. 5/813:29SEA - BHD
2 stops19h 56mAmerican Airlines
ma. 19/809:50BHD - SEA
2 stops20h 06mAmerican Airlines
Deal found 14/5£598
lø. 24/813:26SEA - BHD
2 stops19h 24mAmerican Airlines
sø. 1/906:50BHD - SEA
2 stops23h 06mAmerican Airlines
Deal found 15/5£602
lø. 10/813:26SEA - BHD
2 stops18h 59mAmerican Airlines
lø. 24/816:15BHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 15/5£630
lø. 10/813:26SEA - BHD
2 stops17h 39mAmerican Airlines
lø. 24/806:50BHD - SEA
2 stops20h 30mAmerican Airlines
Deal found 15/5£638
fr. 4/1011:33SEA - BHD
2 stops18h 07mAmerican Airlines
ti. 8/1009:45BHD - SEA
2 stops19h 26mAmerican Airlines
Deal found 14/5£716

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 849,850 searches. Data last updated 15 mai 2024.
Some of the best deals we've found on British Airways flights travelling from Seattle to Northern Ireland. Ensure the flight price, dates, time, and airline match your criteria before you book.
to. 10/1019:40SEA - BHD
1 stop11h 55mBritish Airways
fr. 1/1106:50BHD - SEA
1 stop17h 55mBritish Airways
Deal found 15/5£515
to. 10/1019:40SEA - BHD
1 stop14h 00mBritish Airways
fr. 1/1106:50BHD - SEA
2 stops20h 38mBritish Airways
Deal found 15/5£523
ma. 5/806:03SEA - BHD
2 stops22h 47mBritish Airways
ma. 16/918:30BHD - SEA
2 stops32h 22mBritish Airways
Deal found 14/5£546
ma. 5/813:30SEA - BHD
1 stop15h 20mBritish Airways
ma. 19/819:30BHD - SEA
2 stops29h 35mBritish Airways
Deal found 14/5£557
fr. 4/1019:40SEA - BHD
1 stop14h 30mBritish Airways
ti. 8/1006:35BHD - SEA
1 stop13h 00mBritish Airways
Deal found 13/5£568
fr. 4/1019:40SEA - BHD
1 stop14h 30mBritish Airways
ti. 8/1013:40BHD - SEA
1 stop29h 55mBritish Airways
Deal found 14/5£569
lø. 24/813:50SEA - BHD
1 stop12h 20mBritish Airways
sø. 1/911:20BHD - SEA
2 stops18h 36mBritish Airways
Deal found 15/5£598
lø. 14/919:40SEA - BHD
1 stop15h 15mBritish Airways
lø. 28/918:55BHD - SEA
1 stop30h 50mBritish Airways
Deal found 15/5£610
fr. 4/1011:33SEA - BHD
2 stops19h 52mBritish Airways
ti. 8/1006:35BHD - SEA
1 stop19h 10mBritish Airways
Deal found 13/5£653

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 849,850 searches. Data last updated 15 mai 2024.
Check out some of the best flight deals from Seattle to Northern Ireland in 2024. More deals are always being added, so be sure to check back regularly.
to. 10/1019:40SEA - BHD
1 stop11h 55mBritish Airways
fr. 1/1106:50BHD - SEA
1 stop17h 55mBritish Airways
Deal found 15/5£515
to. 10/1019:40SEA - BHD
1 stop14h 00mBritish Airways
fr. 1/1106:50BHD - SEA
2 stops20h 38mBritish Airways
Deal found 15/5£523
to. 10/1007:37SEA - BHD
2 stops19h 23mAmerican Airlines
fr. 1/1106:50BHD - SEA
2 stops23h 02mAmerican Airlines
Deal found 15/5£531
ti. 29/1019:45SEA - BHD
1 stop13h 55mBritish Airways
sø. 3/1109:40BHD - SEA
1 stop15h 05mBritish Airways
Deal found 15/5£547
ti. 29/1013:39SEA - BHD
2 stops20h 01mAmerican Airlines
sø. 3/1115:05BHD - SEA
1 stop33h 40mAmerican Airlines
Deal found 15/5£551
ti. 29/1006:00SEA - BHD
2 stops21h 40mAmerican Airlines
sø. 3/1105:35BHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 15/5£559
fr. 4/1019:40SEA - BHD
1 stop14h 30mBritish Airways
ti. 8/1013:40BHD - SEA
1 stop29h 55mBritish Airways
Deal found 14/5£569
lø. 7/911:33SEA - BHD
2 stops19h 32mAmerican Airlines
lø. 21/906:50BHD - SEA
1 stop12h 45mAmerican Airlines
Deal found 15/5£594
fr. 4/1006:30SEA - BHD
2 stops26h 20mDelta
ti. 8/1017:20BHD - SEA
1 stop25h 15mDelta
Deal found 14/5£596

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 849,850 searches. Data last updated 15 mai 2024.
Some of the best available deals we've found on one-way flights from Seattle to Northern Ireland. Users in need of a round-trip flight from Seattle to Northern Ireland instead should update the search form at the top of page.
fr. 26/718:15SEA - BFS
2 stops40h 50mMultiple Airlines
Deal found 15/5£343
ti. 28/509:35SEA - BHD
3 stops48h 05mMultiple Airlines
Deal found 14/5£413
ti. 28/509:35SEA - BHD
3 stops48h 05mMultiple Airlines
Deal found 15/5£441
ti. 28/521:40SEA - BFS
3 stops57h 40mMultiple Airlines
Deal found 15/5£446
ti. 28/521:40SEA - BFS
3 stops56h 55mMultiple Airlines
Deal found 14/5£448
fr. 26/718:10SEA - BHD
1 stop14h 40mDelta
Deal found 15/5£465
fr. 26/711:30SEA - BHD
2 stops21h 20mDelta
Deal found 15/5£469
ti. 28/520:14SEA - BHD
2 stops39h 46mMultiple Airlines
Deal found 14/5£525
ti. 28/520:14SEA - BHD
2 stops39h 46mMultiple Airlines
Deal found 14/5£530

Find flights from Seattle to Northern Ireland within your budget

Customise 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 849,850 searches. Data last updated 15 mai 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£511 - £808

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 5/8

1 stop15h 20m

Belfast City

ma. 16/9

1 stop29h 45m

£511

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 5/8

2 stops19h 56m

Belfast City

ma. 16/9

1 stop31h 15m

£514

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

to. 10/10

1 stop11h 55m

Belfast City

fr. 1/11

1 stop17h 55m

£515

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

to. 10/10

1 stop14h 00m

Belfast City

fr. 1/11

2 stops20h 38m

£523

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

to. 10/10

2 stops19h 23m

Belfast City

fr. 1/11

2 stops23h 02m

£531

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 5/8

2 stops22h 47m

Belfast City

ma. 16/9

2 stops32h 22m

£546

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 5/8

1 stop15h 20m

Belfast City

ma. 19/8

2 stops29h 35m

£557

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

fr. 4/10

2 stops26h 20m

Belfast City

ti. 8/10

1 stop25h 15m

£596

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

ma. 5/8

2 stops26h 50m

Belfast Intl

ma. 16/9

3 stops22h 11m

£808

Flights are sorted by cheapest first

Deals found on 14/5

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 15 mai 2024.
Read through reviews of airlines operating flights from Seattle to Northern Ireland, such as American Airlines, British Airways and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
10,691 reviews
Check prices

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Boarding

8.2

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.

Delta
8.0
Very Good
10,691 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Boarding

8.2

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.

American Airlines
7.3
Good
14,535 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Boarding

8.2

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.

Lufthansa
7.0
Good
7,665 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Boarding

8.2

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.

British Airways
6.8
Okay
6,837 reviews
Delta
8.0
Very Good
10,691 reviews
Check prices

Overall

8.0

Comfort

7.9

Entertainment

8.0

Food

7.4

Boarding

8.2

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?

    Located just 11.4 mi from the city center, Seattle/Tacoma Intl (SEA) is the airport most travelers will use when flying to Northern Ireland from Seattle.

  • Can I find flights from Seattle to Northern Ireland for under £600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Northern Ireland for under £600. The cheapest flight booked recently is on American Airlines for just £511, but on average you can expect to pay £586.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at £465. British Airways flights start at £541 while deals on American Airlines start at £545 one-way.

  • What does SEA to BFS mean?

    This is defined as Seattle/Tacoma Intl Airport (SEA) and Belfast Intl Airport (BFS). Codes like Belfast Intl Airport are often used to just call airports uniquely. Belfast City Airport (BHD), Londonderry Eglinton Airport (LDY) are other airports near this flight route and their unique identifiers/IATA codes.

  • 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 holiday 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 15/5.

See more FAQs

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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
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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers 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?

Deals for Seattle to Northern Ireland flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights simply makes it quick and affordable to book flights from Seattle to Northern Ireland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes! Cheapflights helps users easily find flights from Seattle to Northern Ireland with no change fees.

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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