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Cheap flights from Seattle to Northern Ireland from £495

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

Cheap flight deals from Seattle to Northern Ireland

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Northern Ireland (GBNIR). 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

£495
30/1-6/2
  • 30/1-6/2
  • 4 total stops
  • 32h 25m total
  • Seattle to Northern Ireland
Search Deals

Find flight deals from Seattle to Northern Ireland

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

Thu 30/114:35SEA - BFS
2 stops15h 05mMultiple Airlines
Thu 6/207:40BFS - SEA
2 stops17h 20mMultiple Airlines
Deal found 16/12£495
Tue 14/118:50SEA - BHD
1 stop13h 55mFinnair
Tue 21/106:35BHD - SEA
1 stop12h 45mFinnair
Deal found 15/12£601
Tue 14/113:35SEA - BHD
2 stops17h 20mBritish Airways
Tue 21/108:40BHD - SEA
1 stop16h 15mBritish Airways
Deal found 15/12£631
Tue 14/108:45SEA - BHD
2 stops24h 05mDelta
Tue 21/106:30BHD - SEA
2 stops17h 24mDelta
Deal found 15/12£647
Fri 31/113:35SEA - BHD
2 stops16h 40mAmerican Airlines
Fri 7/206:45BHD - SEA
1 stop12h 35mAmerican Airlines
Deal found 17/12£650
Fri 31/118:50SEA - BHD
1 stop14h 25mMultiple Airlines
Fri 7/206:45BHD - SEA
1 stop12h 35mMultiple Airlines
Deal found 17/12£641
Sun 16/220:00SEA - BHD
2 stops14h 40mAer Lingus
Thu 27/210:40BHD - SEA
2 stops20h 26mAer Lingus
Deal found 17/12£2,910
Mon 17/315:15SEA - BHD
1 stop18h 35mKLM
Tue 25/317:20BHD - SEA
1 stop26h 20mKLM
Deal found 17/12£3,221
Sun 16/322:55SEA - BHD
2 stops34h 55mVirgin Atlantic
Mon 24/317:20BHD - SEA
1 stop26h 20mVirgin Atlantic
Deal found 17/12£3,224

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

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Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBelfast

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Thu 30/1

14:35-13:40

2 stops15h 05m

Belfast Intl

Thu 6/2

07:40-17:00

2 stops17h 20m

£495

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 14/1

18:50-16:45

1 stop13h 55m

Belfast City

Tue 21/1

06:35-11:20

1 stop12h 45m

£601

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 14/1

13:35-14:55

2 stops17h 20m

Belfast City

Tue 21/1

08:40-16:55

1 stop16h 15m

£631

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 31/1

18:50-17:15

1 stop14h 25m

Belfast City

Fri 7/2

06:45-11:20

1 stop12h 35m

£641

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 14/1

08:45-16:50

2 stops24h 05m

Belfast City

Tue 21/1

06:30-15:54

2 stops17h 24m

£647

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 31/1

13:35-14:15

2 stops16h 40m

Belfast City

Fri 7/2

06:45-11:20

1 stop12h 35m

£650

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 16/2

20:00-18:40

2 stops14h 40m

Belfast City

Thu 27/2

10:40-23:06

2 stops20h 26m

£2,910

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Mon 17/3

15:15-16:50

1 stop18h 35m

Belfast City

Tue 25/3

17:20-12:40

1 stop26h 20m

£3,221

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sun 16/3

22:55-16:50

2 stops34h 55m

Belfast City

Mon 24/3

17:20-12:40

1 stop26h 20m

£3,224

Flights are sorted by cheapest return flights first.

Deals found on 16/12

Best time to book a flight from Seattle to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Seattle 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 Seattle to Northern Ireland

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

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

Currently, January is the cheapest month in which you can book a flight from Seattle to Northern Ireland (average of £67). Flying from Seattle to Northern Ireland in August is currently the most expensive (average of £90). 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.

Rainfall in Northern Ireland by month

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

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

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

If weather is an important factor for your trip to Northern Ireland, 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 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very Good
8,604 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very Good
8,604 reviews
Check prices

Comfort

7.9

Entertainment

7.9

Crew

8.6

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 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.

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

    Currently, January is the cheapest month in which you can book a flight from Seattle to Northern Ireland (average of £67). Flying from Seattle to Northern Ireland in August is currently the most expensive (average of £90). 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 Seattle to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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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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