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Cheap flights from Seattle (SEA) to Northern Ireland from $338

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 9/16. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SEA — BFS
Jun 16 — Jun 231
From?
To?
Sun 6/16
Sun 6/23
1 adult, Economy
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What is the cheapest month to fly from Seattle to Northern Ireland?

Our data shows that April tends to be the cheapest month to fly to Northern Ireland from Seattle. Users have commonly found prices around $1,036 for the month, but tickets can be as low as $719. Due to multiple factors, prepare for potentially higher prices in June.

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

When flying from Seattle to Northern Ireland, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap Seattle to Northern Ireland flights in June & July 2024

Find cheap flight options from Seattle to Northern Ireland specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Prices were last updated on June 11, 2024.
The lowest fares we've come across on flights traveling from Seattle to Northern Ireland in June and July 2024. Check back soon for alternative fares.
Tue 7/91:30 pmSEA - BHD
1 stop15h 25mBritish Airways
Tue 7/167:30 pmBHD - SEA
2 stops34h 58mBritish Airways
Deal found 6/10$817
Tue 7/910:52 pmSEA - BHD
2 stops25h 58mBritish Airways
Tue 7/167:30 pmBHD - SEA
2 stops34h 58mBritish Airways
Deal found 6/10$822
Fri 7/121:26 pmSEA - BHD
2 stops20h 44mBritish Airways
Sun 7/216:05 pmBHD - SEA
2 stops35h 53mBritish Airways
Deal found 6/10$981
Fri 7/127:00 amSEA - BFS
2 stops22h 25mMultiple Airlines
Sun 7/2110:10 pmBFS - SEA
3 stops27h 12mMultiple Airlines
Deal found 6/10$1,024
Fri 7/125:50 amSEA - BFS
3 stops23h 35mMultiple Airlines
Sun 7/2110:10 pmBFS - SEA
3 stops27h 12mMultiple Airlines
Deal found 6/10$1,134
Tue 7/91:10 pmSEA - BHD
3 stops24h 00mMultiple Airlines
Tue 7/166:55 amBHD - SEA
3 stops23h 25mMultiple Airlines
Deal found 6/10$1,135
Tue 7/96:10 pmSEA - BHD
1 stop14h 40mKLM
Tue 7/165:20 pmBHD - SEA
1 stop24h 55mKLM
Deal found 6/10$1,168
Fri 7/1210:52 pmSEA - BHD
2 stops27h 18mBritish Airways
Sun 7/213:15 pmBHD - SEA
3 stops37h 38mBritish Airways
Deal found 6/10$1,182
Tue 7/911:40 amSEA - BHD
3 stops25h 30mMultiple Airlines
Tue 7/166:55 amBHD - SEA
2 stops35h 56mMultiple Airlines
Deal found 6/10$1,241

Seattle to Northern Ireland 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Northern Ireland in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
The lowest fares we've come across on flights traveling from Seattle to Northern Ireland in June and July 2024. Check back soon for alternative fares.
Tue 10/297:45 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Sun 11/39:40 amBHD - SEA
1 stop15h 05mAmerican Airlines
Deal found 6/10$595
Tue 10/291:39 pmSEA - BHD
2 stops21h 56mAmerican Airlines
Sun 11/33:05 pmBHD - SEA
1 stop33h 40mAmerican Airlines
Deal found 6/10$600
Tue 9/173:45 pmSEA - BHD
2 stops19h 10mAmerican Airlines
Tue 9/241:40 pmBHD - SEA
1 stop29h 55mAmerican Airlines
Deal found 6/9$601
Tue 10/2910:30 amSEA - BHD
2 stops20h 55mAmerican Airlines
Sun 11/35:35 amBHD - SEA
2 stops21h 53mAmerican Airlines
Deal found 6/10$610
Tue 9/173:45 pmSEA - BHD
2 stops17h 40mAmerican Airlines
Tue 9/246:35 amBHD - SEA
2 stops23h 08mAmerican Airlines
Deal found 6/9$611
Tue 9/177:40 pmSEA - BHD
1 stop13h 45mAmerican Airlines
Tue 9/244:20 pmBHD - SEA
1 stop27h 15mAmerican Airlines
Deal found 6/9$646
Sat 9/711:59 pmSEA - BHD
2 stops29h 01mBritish Airways
Sat 9/214:15 pmBHD - SEA
1 stop27h 15mBritish Airways
Deal found 6/10$679
Sat 9/711:59 pmSEA - BHD
2 stops25h 06mBritish Airways
Sat 9/216:50 amBHD - SEA
2 stops22h 53mBritish Airways
Deal found 6/10$689
Wed 8/147:20 amSEA - BHD
2 stops22h 05mBritish Airways
Tue 8/207:30 pmBHD - SEA
2 stops29h 35mBritish Airways
Deal found 6/10$690

One-way flights to Northern Ireland from Seattle

Search for one-way flight options from Seattle to Northern Ireland. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
Take a look at some of the best available options we've come across on one-way flights from Seattle to Northern Ireland. Users can also find round-trip Seattle to Northern Ireland flights by using the search form above.
Mon 9/163:50 pmSEA - BFS
2 stops32h 35mMultiple Airlines
Deal found 6/9$338
Mon 9/163:50 pmSEA - BHD
2 stops32h 25mMultiple Airlines
Deal found 6/9$377
Tue 9/179:37 amSEA - BFS
3 stops46h 13mMultiple Airlines
Deal found 6/9$411
Tue 9/179:37 amSEA - BHD
3 stops51h 08mMultiple Airlines
Deal found 6/9$422
Mon 9/165:50 amSEA - BFS
3 stops31h 40mMultiple Airlines
Deal found 6/9$435
Fri 7/2611:00 pmSEA - BFS
3 stops36h 35mMultiple Airlines
Deal found 6/10$469
Mon 9/163:50 pmSEA - BHD
3 stops20h 55mMultiple Airlines
Deal found 6/9$471
Tue 9/176:00 amSEA - BHD
2 stops25h 20mAmerican Airlines
Deal found 6/9$477
Fri 7/267:00 amSEA - BFS
2 stops22h 25mMultiple Airlines
Deal found 6/10$506

Find flights from Seattle to Northern Ireland within your budget

Customize 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 3,117,830 searches. Data last updated June 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$595 - $989

Route

Depart

Return

Price

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

1 stop13h 55m

Belfast City

Sun 11/3

1 stop15h 05m

$595

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops21h 56m

Belfast City

Sun 11/3

1 stop33h 40m

$600

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 9/17

2 stops19h 10m

Belfast City

Tue 9/24

1 stop29h 55m

$601

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Tue 10/29

2 stops20h 55m

Belfast City

Sun 11/3

2 stops21h 53m

$610

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/7

2 stops29h 01m

Belfast City

Sat 9/21

1 stop27h 15m

$679

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 9/7

2 stops25h 06m

Belfast City

Sat 9/21

2 stops22h 53m

$689

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 8/14

2 stops15h 35m

Belfast City

Tue 8/20

1 stop24h 55m

$769

Seattle/Tacoma IntlBelfast City

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 8/14

2 stops15h 35m

Belfast City

Tue 8/20

1 stop24h 55m

$770

Seattle/Tacoma IntlBelfast Intl

SEA - BFS

SEABFS

Seattle/Tacoma Intl

Tue 10/22

3 stops28h 40m

Belfast Intl

Wed 11/13

2 stops28h 20m

$989

Flights are sorted by cheapest first

Deals found on 6/10

No data available for this route at this time. Please check back soon.

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 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.

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 June 11, 2024.
Get a feel of what it's like to fly with American Airlines, KLM and British Airways from Seattle to Northern Ireland by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,277 reviews
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

KLM
7.9
Good
1,470 reviews
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Virgin Atlantic
7.6
Good
714 reviews
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,129 reviews
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Aer Lingus
7.2
Good
1,279 reviews
Delta
8.0
Very good
10,277 reviews

Comfort

7.9

Entertainment

8.0

Crew

8.6

Overall

8.0

Food

7.4

Boarding

8.2

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

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?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly out of when you book flights from Seattle to Northern Ireland.

  • Can I find flights from Seattle to Northern Ireland for under $600 on Cheapflights?

    Yes, there are multiple flights from Seattle to Northern Ireland for under $600. The cheapest flight booked recently is on American Airlines for just $595, but on average you can expect to pay $713.

  • What are the cheapest airlines to fly from Seattle to Northern Ireland one-way?

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $477. Aer Lingus flights start at $514 while deals on Virgin Atlantic start at $538 one-way.

  • What does SEA to BFS mean?

    Seattle/Tacoma Intl Airport is SEA and Belfast Intl Airport is BFS. These codes are created by the International Air Transport Association (IATA) and airlines use them to identify the departing and arrival airports in the flight routes they service. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Belfast City Airport (BHD), Londonderry Eglinton Airport (LDY).

  • Can I find deals for flights from Seattle to Northern Ireland that include extra baggage allowance?

    The amount of baggage you can bring on your Seattle to Northern Ireland flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Seattle to Northern Ireland with specific airlines?

    Yes, Cheapflights allows you to browse and filter Seattle to Northern Ireland flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • 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 vacation 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.

  • Can I find deals for flights from Seattle to Northern Ireland that allow pets onboard?

    Many airlines flying from Seattle to Northern Ireland offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Seattle to Northern Ireland?

    Yes, you can often find last-minute deals on Seattle to Northern Ireland flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Seattle to Northern Ireland flight deals updated?

    The Seattle to Northern Ireland flight deals you see on this page were last updated on 6/10.

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

    Currently, February is the cheapest month in which you can book a flight from Seattle to Northern Ireland (average of $641). Flying from Seattle to Northern Ireland in June is currently the most expensive (average of $1,214). 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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Top 2 airlines flying from Seattle to Northern Ireland

Discover the top 2 airlines that operate flights from Seattle to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 3,117,830 searches. Data last updated June 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$603Average$803FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$670Average$1,015FlexibilityNo cancel feeOn-time70%
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Search flights from Seattle to Northern Ireland by cabin class

Find flights from Seattle to Northern Ireland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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