HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from Northern Ireland to Seattle (SEA) from $790

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 9/25. 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.
BFS — SEA
May 24 — May 311
From?
To?
Fri 5/24
Fri 5/31
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

When is the cheapest time to fly from Northern Ireland to Seattle (NIR - SEA)?

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.

Cheap American Airlines flights from Northern Ireland to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Northern Ireland and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,621,518 searches. Data last updated May 19, 2024.
Find some of the cheapest American Airlines flights traveling from Northern Ireland to Seattle. Deals update often to give you more flight options matching your criteria
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/17$790
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/18$792
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/17$796
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/18$797
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/17$828
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 5/18$830

Cheap Delta flights from Northern Ireland to Seattle

Explore cheap flight options specifically provided by Delta for the route between Northern Ireland and Seattle. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,621,518 searches. Data last updated May 19, 2024.
Have a look at some of the cheapest available Delta flights departing from Northern Ireland and landing in Seattle. Check back soon if you're not seeing flights that suit your needs.
Sat 6/155:20 pmBHD - SEA
2 stops30h 30mDelta
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mDelta
Deal found 5/18$1,263
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mDelta
Sat 8/1711:55 amSEA - BHD
2 stops20h 55mDelta
Deal found 5/18$1,274
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mDelta
Sat 8/1711:50 amSEA - BHD
2 stops21h 00mDelta
Deal found 5/19$1,277
Sat 6/155:20 pmBHD - SEA
2 stops30h 30mDelta
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mDelta
Deal found 5/19$1,331

Cheap Northern Ireland to Seattle flights in May & June 2024

Find cheap flight options from Northern Ireland to Seattle specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,621,518 searches. Prices were last updated on May 19, 2024.
The lowest fares we've come across on flights traveling from Northern Ireland to Seattle in May and June 2024. Check back soon for alternative fares.
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mMultiple Airlines
Sat 8/171:30 pmSEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 5/18$1,247
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mMultiple Airlines
Sat 8/171:30 pmSEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 5/19$1,250
Sat 6/155:20 pmBHD - SEA
2 stops30h 30mDelta
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mDelta
Deal found 5/18$1,263
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mDelta
Sat 8/1711:55 amSEA - BHD
2 stops20h 55mDelta
Deal found 5/18$1,274
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mKLM
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mKLM
Deal found 5/19$1,277
Sat 6/155:20 pmBHD - SEA
2 stops28h 50mKLM
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mKLM
Deal found 5/19$1,314
Sat 6/155:20 pmBHD - SEA
2 stops32h 15mKLM
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mKLM
Deal found 5/18$1,327
Sat 6/155:20 pmBHD - SEA
2 stops30h 30mDelta
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mDelta
Deal found 5/19$1,331
Sat 6/157:10 amBFS - SEA
2 stops21h 11mMultiple Airlines
Sat 8/171:50 pmSEA - BFS
2 stops35h 40mMultiple Airlines
Deal found 5/19$1,607

Northern Ireland to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Northern Ireland and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,621,518 searches. Data last updated May 19, 2024.
The lowest fares we've come across on flights traveling from Northern Ireland to Seattle in May and June 2024. Check back soon for alternative fares.
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/17$790
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/18$792
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/17$796
Wed 9/256:50 amBHD - SEA
2 stops22h 21mAmerican Airlines
Sun 9/2911:50 pmSEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/18$797
Wed 9/2511:50 amBHD - SEA
1 stop13h 55mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/17$828
Wed 9/256:50 amBHD - SEA
1 stop12h 45mAmerican Airlines
Sun 9/297:40 pmSEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 5/18$830
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mMultiple Airlines
Sat 8/171:30 pmSEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 5/18$1,247
Sat 6/155:20 pmBHD - SEA
1 stop25h 00mMultiple Airlines
Sat 8/171:30 pmSEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 5/19$1,250
Sat 6/155:20 pmBHD - SEA
2 stops30h 30mDelta
Sat 8/173:15 pmSEA - BHD
2 stops17h 35mDelta
Deal found 5/18$1,263

One-way flights to Seattle from Northern Ireland

Search for one-way flight options from Northern Ireland to Seattle. 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 2,621,518 searches. Data last updated May 19, 2024.
Take a look at some of the one-way flights we've detected from Northern Ireland to Seattle. Users in need of a round-trip flight from Northern Ireland to Seattle instead should update the search form at the top of page.
Thu 10/316:55 amBHD - SEA
3 stops42h 05mMultiple Airlines
Deal found 5/18$1,266
Thu 10/317:10 amBHD - SEA
2 stops17h 50mMultiple Airlines
Deal found 5/18$1,963
Thu 10/316:45 amBHD - SEA
1 stop14h 45mMultiple Airlines
Deal found 5/18$2,756

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 2,621,518 searches. Data last updated May 19, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$790 - $1,314

Route

Depart

Return

Price

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop13h 55m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$790

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop12h 45m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$792

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

2 stops22h 21m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$796

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

2 stops22h 21m

Seattle/Tacoma Intl

Sun 9/29

2 stops25h 05m

$797

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop13h 55m

Seattle/Tacoma Intl

Sun 9/29

1 stop13h 55m

$828

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 9/25

1 stop12h 45m

Seattle/Tacoma Intl

Sun 9/29

1 stop15h 00m

$830

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 6/15

1 stop25h 00m

Seattle/Tacoma Intl

Sat 8/17

1 stop19h 20m

$1,247

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 6/15

2 stops30h 30m

Seattle/Tacoma Intl

Sat 8/17

2 stops17h 35m

$1,263

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 6/15

2 stops28h 50m

Seattle/Tacoma Intl

Sat 8/17

2 stops17h 35m

$1,314

Flights are sorted by cheapest first

Deals found on 5/17

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

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 May 19, 2024.
Read reviews from past customers who have flown American Airlines, Delta and KLM from Northern Ireland to Seattle. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,635 reviews
Check prices

Crew

8.6

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Delta
8.0
Very good
10,635 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Crew

8.6

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

KLM
7.9
Good
1,558 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Crew

8.6

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

American Airlines
7.3
Good
14,489 reviews
Delta
8.0
Very good
10,635 reviews
Check prices

Crew

8.6

Food

7.4

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

8.0

Reviews

1 / 10

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

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 flights from Northern Ireland to Seattle for under $800 on Cheapflights?

    Yes, there are multiple flights from Northern Ireland to Seattle for under $800. The cheapest flight booked recently is on American Airlines for just $790, but on average you can expect to pay $1,160.

  • What does BFS to SEA mean?

    This is defined as Belfast Intl Airport (BFS) and Seattle/Tacoma Intl Airport (SEA). Codes like Seattle/Tacoma Intl Airport are often used to just call airports uniquely. Belfast City Airport (BHD), Londonderry Eglinton Airport (LDY) are other airports near this flight route and their unique identifiers/IATA codes.

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

    The amount of baggage you can bring on your Northern Ireland to Seattle 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 Northern Ireland to Seattle with specific airlines?

    Yes, Cheapflights allows you to browse and filter Northern Ireland to Seattle 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 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.

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

    Many airlines flying from Northern Ireland to Seattle 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 Northern Ireland to Seattle?

    Yes, you can often find last-minute deals on Northern Ireland to Seattle 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 Northern Ireland to Seattle flight deals updated?

    The Northern Ireland to Seattle flight deals you see on this page were last updated on 5/19.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Heathrow to Seattle flights
Gatwick to Seattle flights
Heathrow to Portland flights
Gatwick to Portland flights
Manchester to Seattle flights
Luton to Seattle flights
Belfast Intl to Seattle flights
Luton to Portland flights
Edinburgh to Seattle flights
Stansted to Seattle flights
Birmingham to Seattle flights
Manchester to Portland flights
Belfast City to Seattle flights
Stansted to Portland flights
Glasgow Intl to Seattle flights
Leeds to Seattle flights
Bristol to Seattle flights
Glasgow Intl to Portland flights
Newcastle upon Tyne to Seattle flights
Southampton to Seattle flights
Birmingham to Portland flights
Heathrow to Spokane flights
Grimsby to Portland flights
Bristol to Portland flights
Manchester to Spokane flights
Edinburgh to Portland flights
Newquay to Seattle flights
Gatwick to Spokane flights
Birmingham to Spokane flights
Dallas to Austin flights
Los Angeles to Bangkok flights
New York John F Kennedy Intl Airport to San Francisco flights
Los Angeles to Istanbul flights
Las Vegas to Sacramento flights
San Francisco to San Diego flights
Seattle to Paris flights
New York to Milan flights
Minneapolis to Las Vegas flights
Los Angeles to Fort Lauderdale flights
USA to Japan flights
Northern Ireland to San Francisco flights

Search flights from Northern Ireland to Seattle by cabin class

Find flights from Northern Ireland to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers 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?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Northern Ireland today with Cheapflights!

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Northern Ireland to Seattle for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to Seattle from Northern Ireland? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines