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$532+ Cheap flights from Northern Ireland to Seattle (SEA)

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 2/16. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
nov. 19 — nov. 261
mié. 11/19
mié. 11/26
1 adult, Economy
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Find flight deals from Northern Ireland to Seattle

Cheapest flights from Northern Ireland to Seattle
Explore the most affordable flight options available from Northern Ireland to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on octubre 20, 2025.

This Trip.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/172:15 pmBHD - SEA
2 stops34h 45mMultiple Airlines
lun. 11/242:35 pmSEA - BHD
2 stops21h 55mMultiple Airlines
Deal found 10/18$757
This Trip.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/246:00 amBFS - SEA
1 stop18h 50mMultiple Airlines
lun. 12/87:20 pmSEA - BFS
1 stop18h 10mMultiple Airlines
Deal found 10/19$805
This TravelUp deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/246:35 amBHD - SEA
1 stop18h 20mBritish Airways
lun. 12/86:50 pmSEA - BHD
1 stop13h 15mBritish Airways
Deal found 10/19$822
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/176:30 amBHD - SEA
1 stop13h 15mDelta
lun. 11/249:43 amSEA - BHD
2 stops23h 07mDelta
Deal found 10/18$835
This Delta deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/246:30 amBHD - SEA
2 stops20h 11mDelta
lun. 12/87:15 amSEA - BHD
2 stops25h 35mDelta
Deal found 10/19$841
This TravelUp deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1311:05 amBHD - SEA
2 stops20h 13mBritish Airways
sáb. 11/226:50 pmSEA - BHD
1 stop16h 50mBritish Airways
Deal found 10/18$923
This KLM deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/126:30 amBHD - SEA
1 stop13h 20mKLM
vie. 1/911:25 amSEA - BHD
2 stops21h 25mKLM
Deal found 10/19$1,003
This Expedia deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1211:30 amBHD - SEA
1 stop13h 25mBritish Airways
vie. 1/96:50 pmSEA - BHD
1 stop14h 25mBritish Airways
Deal found 10/19$1,005
This Virgin Atlantic deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/126:30 amBHD - SEA
2 stops22h 05mVirgin Atlantic
vie. 1/97:20 amSEA - BHD
2 stops25h 30mVirgin Atlantic
Deal found 10/19$1,013
This Delta deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:30 amBHD - SEA
2 stops18h 30mDelta
sáb. 11/229:32 amSEA - BHD
2 stops23h 18mDelta
Deal found 10/18$1,014
This Kiwi.com deal was found by Cheapflights users on 10/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/1710:20 pmBFS - SEA
2 stops29h 30mMultiple Airlines
lun. 11/244:48 pmSEA - BFS
1 stop15h 27mMultiple Airlines
Deal found 10/18$1,026
This Mytrip deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/247:20 amBHD - SEA
2 stops22h 56mMultiple Airlines
lun. 12/85:50 amSEA - BHD
3 stops23h 45mMultiple Airlines
Deal found 10/19$1,136

Cheap flight deals from Northern Ireland to Seattle

Keep the following information in mind while searching for Northern Ireland to Seattle flight deals. Data was last updated octubre 20, 2025.

Round-trip from

$757
(Trip.com)

One-way from

$532
(Kiwi.com)
From Northern Ireland to Seattle/Tacoma Intl
Search Deals
One-way flight from Northern Ireland to Seattle/Tacoma Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Seattle 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 2,558,603 searches. Data last updated octubre 20, 2025.
Use the filters below to find and compare flights from Northern Ireland to Seattle that are best for you.

Fly from

Northern Ireland

Fly to

Seattle

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

lun. 11/17

2:15 pm-5:00 pm

2 stops34h 45m

Seattle/Tacoma Intl

lun. 11/24

2:35 pm-8:30 pm

2 stops21h 55m

$757

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

lun. 11/24

6:00 am-4:50 pm

1 stop18h 50m

Seattle/Tacoma Intl

lun. 12/8

7:20 pm-9:30 pm

1 stop18h 10m

$805

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

lun. 11/24

6:30 am-11:45 am

1 stop13h 15m

Seattle/Tacoma Intl

lun. 12/8

9:45 am-4:50 pm

2 stops23h 05m

$835

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

lun. 11/17

6:30 am-11:45 am

1 stop13h 15m

Seattle/Tacoma Intl

lun. 11/24

9:43 am-4:50 pm

2 stops23h 07m

$835

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

jue. 3/5

9:05 am-4:55 pm

1 stop15h 50m

Seattle/Tacoma Intl

lun. 3/9

1:48 pm-2:15 pm

2 stops17h 27m

$878

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

jue. 11/13

11:05 am-11:18 pm

2 stops20h 13m

Seattle/Tacoma Intl

sáb. 11/22

6:50 pm-7:40 pm

1 stop16h 50m

$923

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

lun. 11/17

10:20 pm-7:50 pm

2 stops29h 30m

Seattle/Tacoma Intl

lun. 11/24

4:48 pm-4:15 pm

1 stop15h 27m

$1,026

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

vie. 12/12

10:00 am-10:16 pm

3 stops44h 16m

Seattle/Tacoma Intl

vie. 1/9

2:00 pm-6:55 pm

2 stops20h 55m

$1,128

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

jue. 11/13

6:30 am-10:22 am

3 stops35h 52m

Seattle/Tacoma Intl

sáb. 11/22

11:55 am-7:55 pm

3 stops24h 00m

$1,203

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

lun. 2/16

2:15 pm-11:54 pm

2 stops41h 39m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 11 results
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Best time to book a flight from Northern Ireland to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Northern Ireland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Northern Ireland to Seattle
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Northern Ireland to Seattle. 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 into for flights to Seattle from Northern Ireland?

    If you book a flight to Seattle from Northern Ireland, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How long is the flight from Northern Ireland to Seattle?

    There are many flights that can get you from Northern Ireland to Seattle in 13h 15m. Fly via Delta to get the fastest option. Northern Ireland and Seattle are separated by a distance of 4472 mi.

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

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

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

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

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

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

See more FAQs

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