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$695+ Cheap flights from Northern Ireland to Seattle (SEA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
ene. 3 — ene. 101
sáb. 1/3
sáb. 1/10
1 adult, Economy
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Cheap 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 diciembre 4, 2025.

This Ovago deal was found by Cheapflights users on 12/3. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3111:25 amBHD - SEA
2 stops31h 34mMultiple Airlines
mié. 1/78:35 amSEA - BHD
2 stops17h 40mMultiple Airlines
Deal found 12/3$1,290
This British Airways deal was found by Cheapflights users on 12/3. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/319:15 amBHD - SEA
2 stops17h 14mBritish Airways
mié. 1/73:35 pmSEA - BHD
2 stops14h 40mBritish Airways
Deal found 12/3$2,414

Find 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 diciembre 4, 2025.

Round-trip from

$695
(American Airlines)
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 diciembre 4, 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

mié. 1/28

11:25 am-4:55 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/1

2:04 pm-10:40 am

2 stops36h 36m

$695

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 2/4

6:35 am-4:55 pm

1 stop18h 20m

Seattle/Tacoma Intl

dom. 2/8

2:04 pm-10:40 am

2 stops36h 36m

$695

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 1/28

6:35 am-4:55 pm

1 stop18h 20m

Seattle/Tacoma Intl

dom. 2/1

6:50 pm-4:50 pm

1 stop14h 00m

$733

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

mié. 2/4

11:25 am-4:55 pm

1 stop13h 30m

Seattle/Tacoma Intl

dom. 2/8

8:04 am-1:55 pm

2 stops21h 51m

$868

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

vie. 3/27

6:30 pm-6:00 pm

3 stops30h 30m

Seattle/Tacoma Intl

mié. 4/8

7:00 pm-8:15 pm

3 stops17h 15m

$1,038

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

vie. 1/9

10:00 am-7:17 pm

2 stops41h 17m

Seattle/Tacoma Intl

mar. 1/13

6:25 pm-6:50 pm

1 stop16h 25m

$1,094

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

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 30m. Fly via American Airlines or British Airways to get the fastest option. Northern Ireland and Seattle are separated by a distance of 4472 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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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