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Cheap flights from Belfast to Seattle from £273

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 6/9. 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.
BHD — SEA
12 May — 19 May1
1 adult
Sun 12/5
Sun 19/5

When is the cheapest time to fly from Belfast to Seattle (BFS - SEA)?

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

Cheap Delta flights from Belfast to Seattle

Explore cheap flight options specifically provided by Delta for the route between Belfast 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 876,769 searches. Data last updated 7 May 2024.
Peruse some of the lowest-priced Delta flights we've found from Belfast to Seattle. Make sure to check back often as deals are often changing.
Tue 4/617:20BHD - SEA
1 stop25h 00mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 6/5£638
Tue 4/617:20BHD - SEA
1 stop25h 00mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 7/5£639
Tue 4/617:20BHD - SEA
2 stops30h 54mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 6/5£643
Tue 4/617:20BHD - SEA
2 stops29h 58mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 7/5£644
Sun 1/917:20BHD - SEA
1 stop25h 05mDelta
Sat 7/918:10SEA - BHD
1 stop14h 40mDelta
Deal found 6/5£1,202

Cheap American Airlines flights from Belfast to Seattle

Explore cheap flight options specifically provided by American Airlines for the route between Belfast 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 876,769 searches. Data last updated 7 May 2024.
Have a look at some of the cheapest available American Airlines flights departing from Belfast and landing in Seattle. Deals frequently update to provide users with more options.
Wed 25/906:50BHD - SEA
1 stop18h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/5£584
Wed 25/906:50BHD - SEA
1 stop12h 45mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 6/5£585
Wed 25/909:50BHD - SEA
2 stops20h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/5£589
Wed 25/909:50BHD - SEA
2 stops20h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 6/5£590
Wed 25/906:50BHD - SEA
1 stop18h 55mAmerican Airlines
Sun 29/919:40SEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/5£614
Wed 25/909:50BHD - SEA
1 stop15h 55mAmerican Airlines
Sun 29/919:40SEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 6/5£615
Tue 4/609:45BHD - SEA
2 stops34h 46mAmerican Airlines
Tue 11/613:25SEA - BHD
2 stops20h 00mAmerican Airlines
Deal found 6/5£655
Tue 4/616:20BHD - SEA
2 stops35h 28mAmerican Airlines
Tue 11/613:25SEA - BHD
2 stops17h 55mAmerican Airlines
Deal found 7/5£656
Sun 1/917:35BHD - SEA
2 stops36h 21mAmerican Airlines
Sat 7/922:54SEA - BHD
2 stops28h 36mAmerican Airlines
Deal found 6/5£697

Cheap Belfast to Seattle flights in May & June 2024

Find cheap flight options from Belfast 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 876,769 searches. Prices were last updated on 7 May 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Tue 4/617:20BHD - SEA
1 stop25h 00mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 6/5£638
Tue 4/617:20BHD - SEA
1 stop31h 15mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 7/5£639
Tue 4/617:20BHD - SEA
2 stops30h 54mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 6/5£643
Tue 4/617:20BHD - SEA
2 stops29h 58mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 7/5£644
Tue 4/609:45BHD - SEA
2 stops34h 46mAmerican Airlines
Tue 11/613:25SEA - BHD
2 stops20h 00mAmerican Airlines
Deal found 6/5£655
Tue 4/606:35BHD - SEA
2 stops24h 30mAmerican Airlines
Tue 11/605:10SEA - BHD
2 stops26h 10mAmerican Airlines
Deal found 7/5£656
Sat 15/617:20BHD - SEA
1 stop25h 00mMultiple Airlines
Sat 17/818:10SEA - BHD
1 stop14h 40mMultiple Airlines
Deal found 6/5£808
Sat 15/617:20BHD - SEA
1 stop25h 00mKLM
Sat 17/815:15SEA - BHD
2 stops17h 35mKLM
Deal found 6/5£829
Sat 15/616:15BHD - SEA
2 stops35h 33mAmerican Airlines
Sat 17/806:00SEA - BHD
2 stops22h 20mAmerican Airlines
Deal found 6/5£852

Belfast to Seattle 2024 flight deals

Discover exclusive flight deals for travel between Belfast and Seattle in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 876,769 searches. Data last updated 7 May 2024.
These are some of the best deals we've found on flights to Seattle in 2024 at this time. More deals are always being added, so be sure to check back regularly.
Wed 25/906:50BHD - SEA
1 stop18h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/5£584
Wed 25/906:50BHD - SEA
1 stop12h 45mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 6/5£585
Wed 25/909:50BHD - SEA
2 stops20h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 5/5£589
Wed 25/909:50BHD - SEA
2 stops20h 55mAmerican Airlines
Sun 29/923:50SEA - BHD
2 stops25h 05mAmerican Airlines
Deal found 6/5£590
Wed 25/906:50BHD - SEA
1 stop18h 55mAmerican Airlines
Sun 29/919:40SEA - BHD
1 stop13h 55mAmerican Airlines
Deal found 5/5£614
Wed 25/909:50BHD - SEA
1 stop15h 55mAmerican Airlines
Sun 29/919:40SEA - BHD
1 stop15h 00mAmerican Airlines
Deal found 6/5£615
Tue 4/617:20BHD - SEA
1 stop25h 00mKLM
Tue 11/618:05SEA - BHD
1 stop14h 45mKLM
Deal found 6/5£638
Tue 4/617:20BHD - SEA
1 stop31h 15mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 7/5£639
Tue 4/617:20BHD - SEA
2 stops30h 54mDelta
Tue 11/618:05SEA - BHD
1 stop14h 45mDelta
Deal found 6/5£643

One-way flights to Seattle from Belfast

Search for one-way flight options from Belfast 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 876,769 searches. Data last updated 7 May 2024.
Take a look at some of the one-way flights we've detected from Belfast to Seattle. Users in need of a round-trip flight from Belfast to Seattle instead should update the search form at the top of page.
Fri 6/914:30BFS - SEA
2 stops57h 38mMultiple Airlines
Deal found 6/5£273
Fri 6/906:00BFS - SEA
3 stops42h 08mMultiple Airlines
Deal found 6/5£308
Fri 6/907:00BHD - SEA
3 stops33h 45mMultiple Airlines
Deal found 6/5£424
Fri 6/918:50BHD - SEA
2 stops33h 31mMultiple Airlines
Deal found 6/5£500
Fri 6/920:05BHD - SEA
1 stop29h 25mAer Lingus
Deal found 6/5£922

Find flights from Belfast to Seattle within your budget

Customise your flight search to find flights from Belfast 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 876,769 searches. Data last updated 7 May 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£584 - £829

Route

Depart

Return

Price

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 25/9

1 stop18h 55m

Seattle/Tacoma Intl

Sun 29/9

2 stops25h 05m

£584

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 25/9

1 stop12h 45m

Seattle/Tacoma Intl

Sun 29/9

2 stops25h 05m

£585

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 25/9

2 stops20h 55m

Seattle/Tacoma Intl

Sun 29/9

2 stops25h 05m

£589

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Wed 25/9

2 stops20h 55m

Seattle/Tacoma Intl

Sun 29/9

2 stops25h 05m

£590

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 4/6

1 stop25h 00m

Seattle/Tacoma Intl

Tue 11/6

1 stop14h 45m

£638

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 4/6

1 stop25h 00m

Seattle/Tacoma Intl

Tue 11/6

1 stop14h 45m

£639

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 4/6

2 stops30h 54m

Seattle/Tacoma Intl

Tue 11/6

1 stop14h 45m

£643

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 15/6

1 stop25h 00m

Seattle/Tacoma Intl

Sat 17/8

1 stop14h 40m

£808

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sat 15/6

1 stop25h 00m

Seattle/Tacoma Intl

Sat 17/8

2 stops17h 35m

£829

Flights are sorted by cheapest first

Deals found on 5/5

When is the cheapest time to fly from Belfast to Seattle?

Use this chart to determine the cheapest time to fly return from Belfast to Seattle. Price data was last updated on 5 May 2024.
Morning
Midday
Afternoon
Evening
All times are departure.
Travellers seeking maximum savings on their Belfast to Seattle flight should consider departing on Tuesday mornings when fares are most often at their lowest. Tuesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

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 7 May 2024.
Peruse reviews from past customers who have flown with Delta and American Airlines from Belfast to Seattle to help guide your decision. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.1
Very Good
10,810 reviews
Check prices

Food

7.4

Entertainment

8.0

Overall

8.1

Crew

8.6

Comfort

7.9

Boarding

8.2

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
8.1
Very Good
10,810 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Food

7.4

Entertainment

8.0

Overall

8.1

Crew

8.6

Comfort

7.9

Boarding

8.2

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
1,598 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Food

7.4

Entertainment

8.0

Overall

8.1

Crew

8.6

Comfort

7.9

Boarding

8.2

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
14,686 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Food

7.4

Entertainment

8.0

Overall

8.1

Crew

8.6

Comfort

7.9

Boarding

8.2

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.

Aer Lingus
7.2
Good
1,342 reviews
Delta
8.1
Very Good
10,810 reviews
Check prices

Food

7.4

Entertainment

8.0

Overall

8.1

Crew

8.6

Comfort

7.9

Boarding

8.2

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 Belfast 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 Belfast?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Belfast. On average, Seattle/Tacoma Intl has 0 inbound flights from Belfast per day from 1 airline. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • Can I find flights from Belfast to Seattle for under £600 on Cheapflights?

    Yes, there are multiple flights from Belfast to Seattle for under £600. The cheapest flight booked recently is on American Airlines for just £584, but on average you can expect to pay £696.

  • What does BFS to SEA mean?

    Great question - BFS to SEA just means Belfast Intl Airport to Seattle/Tacoma Intl Airport. Now you’ll know what these unique codes when you look for flights! Belfast City Airport (BHD), Glasgow Prestwick Airport (PIK), Londonderry Eglinton Airport (LDY), Isle of Islay Glenegedale Airport (ILY), Campbeltown Machrihanish Airport (CAL) are other airports near this flight route and their unique identifiers/IATA codes.

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

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

    Yes, Cheapflights allows you to browse and filter Belfast 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 Belfast to Seattle that include hotel bookings?

    Yes. In addition to deals on Belfast to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Belfast to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Belfast to Seattle.

  • Can I find deals for business class flights from Belfast to Seattle?

    Yes. Cheapflights offers flight deals from Belfast 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 Belfast to Seattle that allow pets onboard?

    Many airlines flying from Belfast 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 Belfast to Seattle?

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

    The Belfast to Seattle flight deals you see on this page were last updated on 7/5.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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

Belfast City to Seattle flights

Top airline flying from Belfast to Seattle

Discover the top airline that operate flights from Belfast to Seattle. 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 876,769 searches. Data last updated 7 May 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£560Average£642FlexibilityNo cancel feeOn-time70%
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Search flights from Belfast to Seattle by cabin class

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Belfast 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 Belfast to Seattle?

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Seattle from Belfast shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Belfast to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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