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Cheap flights from Belfast to Seattle from £571

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight to Seattle departing on 18/4. 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
5 Mar — 12 Mar1
1 adult
Tue 5/3
Tue 12/3

Cheap flight deals from Belfast to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Belfast (BF1) 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 1 March 2024.

Round-trip from

£357
From Belfast to Seattle/Tacoma Intl

What is the cheapest day to fly round-trip from Belfast to Seattle?

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 3% on your flight compared to booking on days when demand is much higher.

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 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 936,534 searches. Data last updated 1 March 2024.
Peruse some of the lowest-priced American Airlines flights we've found from Belfast to Seattle. Make sure to check back often as deals are often changing.
Thu 18/406:35BHD - SEA
1 stop12h 55mAmerican Airlines
Mon 22/419:40SEA - BHD
1 stop11h 55mAmerican Airlines
Deal found 28/2£594
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops19h 34mAmerican Airlines
Deal found 28/2£602
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops17h 44mAmerican Airlines
Deal found 27/2£603
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 29/2£608
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 28/2£610
Thu 27/606:35BHD - SEA
1 stop12h 55mAmerican Airlines
Wed 17/713:30SEA - BHD
1 stop15h 55mAmerican Airlines
Deal found 29/2£1,326
Tue 2/706:35BHD - SEA
1 stop13h 00mAmerican Airlines
Wed 17/713:30SEA - BHD
1 stop15h 55mAmerican Airlines
Deal found 29/2£1,326
Thu 4/706:35BHD - SEA
1 stop12h 55mAmerican Airlines
Thu 18/713:30SEA - BHD
1 stop20h 10mAmerican Airlines
Deal found 29/2£1,333
Tue 2/706:35BHD - SEA
1 stop13h 00mAmerican Airlines
Thu 18/713:30SEA - BHD
1 stop20h 10mAmerican Airlines
Deal found 29/2£1,334

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 936,534 searches. Data last updated 1 March 2024.
Have a look at some of the cheapest available Delta flights departing from Belfast and landing in Seattle. Deals frequently update to provide users with more options.
Fri 8/317:20BHD - SEA
2 stops29h 25mDelta
Mon 11/309:38SEA - BHD
2 stops24h 12mDelta
Deal found 29/2£591
Fri 8/317:20BHD - SEA
2 stops33h 37mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 28/2£592
Thu 18/417:20BHD - SEA
2 stops31h 27mDelta
Mon 22/413:30SEA - BHD
2 stops19h 20mDelta
Deal found 29/2£597
Fri 8/317:20BHD - SEA
1 stop26h 45mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 29/2£689
Fri 8/317:20BHD - SEA
1 stop26h 45mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 28/2£691
Sun 30/617:20BHD - SEA
1 stop24h 55mDelta
Sun 14/718:10SEA - BHD
1 stop14h 40mDelta
Deal found 29/2£1,300
Sat 29/617:20BHD - SEA
2 stops28h 53mDelta
Sat 13/715:15SEA - BHD
2 stops17h 35mDelta
Deal found 29/2£2,491

Cheap Belfast to Seattle flights in March & April 2024

Find cheap flight options from Belfast to Seattle specifically for the months of March and April 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 936,534 searches. Prices were last updated on 1 March 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.
Fri 8/317:20BHD - SEA
2 stops29h 25mDelta
Mon 11/309:38SEA - BHD
2 stops24h 12mDelta
Deal found 29/2£591
Fri 8/317:20BHD - SEA
2 stops33h 37mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 28/2£592
Fri 8/320:15BHD - SEA
1 stop23h 10mMultiple Airlines
Mon 11/319:45SEA - BHD
1 stop15h 50mMultiple Airlines
Deal found 28/2£594
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops19h 34mAmerican Airlines
Deal found 28/2£602
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops17h 44mAmerican Airlines
Deal found 27/2£603
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 29/2£608
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 28/2£610
Fri 8/314:45BHD - SEA
1 stop28h 40mBritish Airways
Mon 11/319:45SEA - BHD
1 stop15h 50mBritish Airways
Deal found 28/2£618
Fri 8/320:15BHD - SEA
1 stop23h 10mBritish Airways
Mon 11/319:45SEA - BHD
1 stop13h 25mBritish Airways
Deal found 27/2£620

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 936,534 searches. Data last updated 1 March 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.
Thu 18/417:20BHD - SEA
1 stop24h 55mMultiple Airlines
Mon 22/413:30SEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 29/2£571
Thu 18/417:20BHD - SEA
1 stop24h 55mMultiple Airlines
Mon 22/418:10SEA - BHD
1 stop14h 40mMultiple Airlines
Deal found 28/2£572
Thu 18/417:20BHD - SEA
2 stops28h 52mMultiple Airlines
Mon 22/413:30SEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 29/2£579
Thu 18/417:20BHD - SEA
2 stops28h 52mMultiple Airlines
Mon 22/413:30SEA - BHD
1 stop19h 20mMultiple Airlines
Deal found 28/2£580
Fri 8/317:20BHD - SEA
2 stops29h 25mDelta
Mon 11/309:38SEA - BHD
2 stops24h 12mDelta
Deal found 29/2£591
Fri 8/317:20BHD - SEA
2 stops33h 37mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 28/2£592
Thu 18/406:35BHD - SEA
1 stop12h 55mAmerican Airlines
Mon 22/419:40SEA - BHD
1 stop11h 55mAmerican Airlines
Deal found 28/2£594
Thu 18/412:45BHD - SEA
1 stop13h 00mAmerican Airlines
Mon 22/419:40SEA - BHD
1 stop13h 45mAmerican Airlines
Deal found 27/2£594
Thu 18/417:20BHD - SEA
2 stops31h 27mDelta
Mon 22/413:30SEA - BHD
2 stops19h 20mDelta
Deal found 29/2£597

Belfast to Seattle flights leaving soon

Find last-minute flight options from Belfast to Seattle for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 936,534 searches. Data last updated 1 March 2024.
Have a look at some of the flights available from Belfast to Seattle departing last-minute. It's wise to confirm all flight details are correct before booking.
Fri 8/317:20BHD - SEA
2 stops29h 25mDelta
Mon 11/309:38SEA - BHD
2 stops24h 12mDelta
Deal found 29/2£591
Fri 8/317:20BHD - SEA
2 stops33h 37mDelta
Mon 11/315:20SEA - BHD
1 stop18h 30mDelta
Deal found 28/2£592
Fri 8/320:15BHD - SEA
1 stop23h 10mMultiple Airlines
Mon 11/319:45SEA - BHD
1 stop15h 50mMultiple Airlines
Deal found 28/2£594
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops19h 34mAmerican Airlines
Deal found 28/2£602
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Mon 11/313:36SEA - BHD
2 stops17h 44mAmerican Airlines
Deal found 27/2£603
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 29/2£608
Fri 8/306:50BHD - SEA
2 stops23h 29mAmerican Airlines
Sun 10/300:59SEA - BHD
2 stops26h 36mAmerican Airlines
Deal found 28/2£610
Fri 8/314:45BHD - SEA
1 stop28h 40mBritish Airways
Mon 11/319:45SEA - BHD
1 stop15h 50mBritish Airways
Deal found 28/2£618
Fri 8/320:15BHD - SEA
1 stop23h 10mBritish Airways
Mon 11/319:45SEA - BHD
1 stop13h 25mBritish Airways
Deal found 27/2£620

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 936,534 searches. Data last updated 1 March 2024.

Fly from

Any airport

Fly to

Any airport

Budget

£571 - £1,368

Route

Depart

Return

Price

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Thu 18/4

1 stop24h 55m

Seattle/Tacoma Intl

Mon 22/4

1 stop14h 40m

£571

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Thu 18/4

2 stops28h 52m

Seattle/Tacoma Intl

Mon 22/4

1 stop19h 20m

£579

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Thu 18/4

1 stop12h 55m

Seattle/Tacoma Intl

Mon 22/4

1 stop11h 55m

£594

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Thu 18/4

2 stops31h 27m

Seattle/Tacoma Intl

Mon 22/4

2 stops19h 20m

£597

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Thu 18/4

2 stops16h 00m

Seattle/Tacoma Intl

Mon 22/4

2 stops15h 55m

£740

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Tue 2/7

1 stop24h 55m

Seattle/Tacoma Intl

Mon 15/7

2 stops19h 15m

£1,289

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Sun 30/6

1 stop24h 55m

Seattle/Tacoma Intl

Sun 14/7

1 stop14h 40m

£1,300

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Mon 1/7

2 stops26h 00m

Seattle/Tacoma Intl

Tue 16/7

2 stops19h 15m

£1,319

Belfast CitySeattle/Tacoma Intl

BHD - SEA

BHDSEA

Belfast City

Mon 1/7

1 stop33h 45m

Seattle/Tacoma Intl

Mon 15/7

1 stop11h 55m

£1,368

Flights are sorted by cheapest first

Deals found on 29/2

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 25 February 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. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Seattle by month

Plan your trip from Belfast to Seattle by taking into account the cheapest months to travel. The average price of a one-way flight from Belfast to Seattle is currently £0 while a return flight costs £928. Price data was last updated on 25 February 2024.

Currently, December is the cheapest month in which you can book a flight from Belfast to Seattle (average of £570). Flying from Belfast to Seattle in July is currently the most expensive (average of £780). 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.

January

£481

February

£470

March

£490

April

£489

May

£511

June

£561

July

£617

August

£594

September

£543

October

£511

November

£466

December

£451

Temperature and rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average temperature and rainfall totals by month.

SEA

Temperature

5 - 19 °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 1 March 2024.
Peruse reviews from past customers who have flown with American Airlines, Delta and British Airways 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.
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

8.1
Very Good
11,818 reviews
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.8
Good
1,766 reviews
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.3
Good
15,571 reviews
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

7.1
Good
2,865 reviews
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

6.9
Okay
7,033 reviews
8.1
Very Good
11,818 reviews

Boarding

8.2

Overall

8.1

Comfort

7.9

Entertainment

8.1

Food

7.5

Crew

8.6

Reviews

1 / 10

It was a good experience other than a short delay.

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 Multiple Airlines for just £571, but on average you can expect to pay £1,150.

Are there last-minute flights available from Belfast to Seattle for under £600?

There are currently 11+ open flights from Belfast to Seattle within the next 7 days for less than £600.

What are the cheapest airlines flying from Belfast to Seattle round-trip?

American Airlines, at £594, was found to be the cheapest airline from Belfast to Seattle.Alternate airlines flying return to your destination include Delta and British Airways.

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.

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

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 936,534 searches. Data last updated 1 March 2024.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£530Average£637FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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.

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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