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$784+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Northern Ireland to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Northern Ireland (GBNIR) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Round-trip from

$784
(Trip.com)
From Northern Ireland to Seattle/Tacoma Intl
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Find flight deals from Northern Ireland to Seattle

Best flights from Northern Ireland to Seattle
Discover carefully curated flight deals from Northern Ireland to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.

This Trip.com deal was found by Cheapflights users on 12/17. 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.
Fri 5/99:05 amBFS - SEA
2 stops19h 35mMultiple Airlines
Fri 5/307:00 pmSEA - BFS
2 stops30h 20mMultiple Airlines
Deal found 12/17$784
This Voliamo deal was found by Cheapflights users on 12/17. 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 Voliamo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:30 amBHD - SEA
1 stop17h 25mKLM
Thu 5/295:35 pmSEA - BHD
1 stop19h 40mKLM
Deal found 12/17$860
This ChecknFly deal was found by Cheapflights users on 12/17. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:30 amBHD - SEA
2 stops24h 55mAir France
Thu 5/295:35 pmSEA - BHD
1 stop19h 45mAir France
Deal found 12/17$873
This Virgin Atlantic deal was found by Cheapflights users on 12/17. 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.
Thu 5/86:30 amBHD - SEA
2 stops24h 55mVirgin Atlantic
Thu 5/295:35 pmSEA - BHD
1 stop19h 45mVirgin Atlantic
Deal found 12/17$885
This Delta deal was found by Cheapflights users on 12/17. 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.
Thu 5/86:30 amBHD - SEA
2 stops20h 04mDelta
Thu 5/299:50 amSEA - BHD
2 stops23h 05mDelta
Deal found 12/17$899
This Voliamo deal was found by Cheapflights users on 12/17. 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 Voliamo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/98:05 pmBHD - SEA
1 stop23h 30mFinnair
Fri 5/3011:20 amSEA - BHD
2 stops38h 50mFinnair
Deal found 12/17$912
This British Airways deal was found by Cheapflights users on 12/17. 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.
Wed 5/216:50 amBHD - SEA
1 stop12h 45mBritish Airways
Fri 5/303:04 pmSEA - BHD
2 stops19h 11mBritish Airways
Deal found 12/17$936
This Trip.com deal was found by Cheapflights users on 12/17. 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.
Fri 5/97:00 amBHD - SEA
2 stops21h 40mMultiple Airlines
Fri 5/307:00 pmSEA - BHD
2 stops17h 25mMultiple Airlines
Deal found 12/17$799

Find flights from Northern Ireland to Seattle within your budget

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 December 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Fri 5/9

9:05 am-8:40 pm

2 stops19h 35m

Seattle/Tacoma Intl

Fri 5/30

7:00 pm-9:20 am

2 stops30h 20m

$784

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 5/9

7:00 am-8:40 pm

2 stops21h 40m

Seattle/Tacoma Intl

Fri 5/30

7:00 pm-8:25 pm

2 stops17h 25m

$799

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

6:30 am-3:55 pm

1 stop17h 25m

Seattle/Tacoma Intl

Thu 5/29

5:35 pm-9:15 pm

1 stop19h 40m

$860

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

6:30 am-11:25 pm

2 stops24h 55m

Seattle/Tacoma Intl

Thu 5/29

5:35 pm-9:20 pm

1 stop19h 45m

$873

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

6:30 am-11:25 pm

2 stops24h 55m

Seattle/Tacoma Intl

Thu 5/29

5:35 pm-9:20 pm

1 stop19h 45m

$885

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/8

6:30 am-6:34 pm

2 stops20h 04m

Seattle/Tacoma Intl

Thu 5/29

9:50 am-4:55 pm

2 stops23h 05m

$899

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 5/9

8:05 pm-11:35 am

1 stop23h 30m

Seattle/Tacoma Intl

Fri 5/30

11:20 am-10:10 am

2 stops38h 50m

$912

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 5/21

6:50 am-11:35 am

1 stop12h 45m

Seattle/Tacoma Intl

Fri 5/30

3:04 pm-6:15 pm

2 stops19h 11m

$936

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

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.

Travel insights for flights from Northern Ireland to Seattle

Get recent, data-driven insights about flights from Northern Ireland to Seattle including ideal travel times, pricing trends, and more.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated December 18, 2024.
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Virgin Atlantic
7.5
Good
668 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,504 reviews
Delta
8.0
Very good
8,604 reviews

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Crew

8.6

Entertainment

7.9

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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.

  • What is the cheapest month to book a flight from Northern Ireland to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Seattle (average of $238). Flying from Northern Ireland to Seattle in July is currently the most expensive (average of $411). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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