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Cheap flights from Northern Ireland to Seattle from £611

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — SEA
23 Dec — 30 Dec1
1 adult

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 18 December 2024.

Round-trip from

£611
9/5-30/5
  • 9/5-30/5
  • 4 total stops
  • 39h 05m total
  • Northern Ireland to Seattle
Search Deals

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 stopovers in mind to ensure you get the best travel experience. Data last updated 18 December 2024.

Fri 9/507:00BHD - SEA
2 stops21h 40mMultiple Airlines
Fri 30/519:00SEA - BHD
2 stops17h 25mMultiple Airlines
Deal found 18/12£611
Thu 8/506:30BHD - SEA
1 stop17h 25mKLM
Thu 29/517:35SEA - BHD
1 stop19h 40mKLM
Deal found 17/12£677
Thu 8/506:30BHD - SEA
2 stops24h 55mAir France
Thu 29/517:35SEA - BHD
1 stop19h 45mAir France
Deal found 17/12£687
Thu 8/506:30BHD - SEA
2 stops24h 55mVirgin Atlantic
Thu 29/517:35SEA - BHD
1 stop19h 45mVirgin Atlantic
Deal found 17/12£698
Thu 8/506:30BHD - SEA
1 stop13h 10mDelta
Thu 29/509:50SEA - BHD
2 stops23h 05mDelta
Deal found 18/12£701
Fri 9/520:05BHD - SEA
1 stop23h 30mFinnair
Fri 30/511:20SEA - BHD
2 stops38h 50mFinnair
Deal found 17/12£718
Wed 21/506:50BHD - SEA
1 stop12h 45mBritish Airways
Fri 30/515:04SEA - BHD
2 stops19h 11mBritish Airways
Deal found 17/12£737
Fri 9/509:05BFS - SEA
2 stops19h 35mMultiple Airlines
Fri 30/519:00SEA - BFS
2 stops30h 20mMultiple Airlines
Deal found 17/12£617

Find flights from Northern Ireland to Seattle within your budget

Customise 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 858,174 searches. Data last updated 18 December 2024.

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Fly to

Any airport

Route

Depart

Return

Price

BelfastSeattle

BFS - SEA

BFSSEA

Belfast Intl

Fri 9/5

09:05-20:40

2 stops19h 35m

Seattle/Tacoma Intl

Fri 30/5

19:00-09:20

2 stops30h 20m

£617

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/5

07:00-20:40

2 stops21h 40m

Seattle/Tacoma Intl

Fri 30/5

19:00-20:25

2 stops17h 25m

£629

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-15:55

1 stop17h 25m

Seattle/Tacoma Intl

Thu 29/5

17:35-21:15

1 stop19h 40m

£677

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-23:25

2 stops24h 55m

Seattle/Tacoma Intl

Thu 29/5

17:35-21:20

1 stop19h 45m

£687

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-23:25

2 stops24h 55m

Seattle/Tacoma Intl

Thu 29/5

17:35-21:20

1 stop19h 45m

£697

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 8/5

06:30-18:34

2 stops20h 04m

Seattle/Tacoma Intl

Thu 29/5

09:50-16:55

2 stops23h 05m

£708

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Fri 9/5

20:05-11:35

1 stop23h 30m

Seattle/Tacoma Intl

Fri 30/5

11:20-10:10

2 stops38h 50m

£718

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/5

06:50-11:35

1 stop12h 45m

Seattle/Tacoma Intl

Fri 30/5

15:04-18:15

2 stops19h 11m

£737

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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 return 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.

What is the cheapest time of day to fly from NIR to SEA?

Find hourly flight availability from Northern Ireland to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2024.

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

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 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 18 December 2024.
Delta
8.0
Very Good
8,604 reviews
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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
Check prices

Entertainment

7.9

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

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?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Northern Ireland. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • 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 holiday 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 £622). Flying from Northern Ireland to Seattle in July is currently the most expensive (average of £845). 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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Alternative routes for Northern Ireland to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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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 Northern Ireland to Seattle?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Northern Ireland to Seattle. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to Seattle from Northern Ireland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

Can Cheapflights notify me if prices for flights from Northern Ireland to Seattle become cheaper?

Yes! Start tracking prices for Northern Ireland to Seattle flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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