How do I get Price Alerts for flights from Belfast City Airport to Seattle?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Belfast City Airport from Seattle . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How can I save money on flights from Belfast City Airport to Seattle with momondo?

By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

How does momondo find its flight prices?

We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

When did momondo last update prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport?

Prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How old do you have to be to fly from Belfast City Airport to Seattle/Tacoma Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast City Airport to Seattle/Tacoma Intl Airport.

What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

£554 Cheap Flights from Belfast City Airport to Seattle in 2025/26

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Find the cheapest flights from Belfast City Airport to Seattle

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09:15 - 13:14BHD-SEA

35h 59m2 stops

14:04 - 16:05SEA-BHD

42h 01m2 stops

£628American Airlines

Find Deal

Wed, 21 Jan - Sun, 25 Jan

09:15 - 16:55BHD-SEA

15h 40m1 stop

14:04 - 10:40SEA-BHD

36h 36m2 stops

£629American Airlines

Find Deal

Wed, 21 Jan - Sun, 25 Jan

06:35 - 13:14BHD-SEA

38h 39m2 stops

14:04 - 16:05SEA-BHD

42h 01m2 stops

£640American Airlines

Find Deal

Wed, 21 Jan - Sun, 25 Jan

09:05 - 11:30BHD-SEA

34h 25m1 stop

08:04 - 14:15SEA-BHD

22h 11m2 stops

£654American Airlines

Find Deal

Thu, 29 Jan - Mon, 2 Feb

09:05 - 16:55BHD-SEA

15h 50m1 stop

08:04 - 14:15SEA-BHD

22h 11m2 stops

£655American Airlines

Find Deal

Thu, 29 Jan - Mon, 2 Feb

06:35 - 16:55BHD-SEA

18h 20m1 stop

08:04 - 10:20SEA-BHD

18h 16m2 stops

£657British Airways

Find Deal

Wed, 21 Jan - Sun, 25 Jan

11:25 - 16:55BHD-SEA

13h 30m1 stop

08:04 - 10:20SEA-BHD

18h 16m2 stops

£658British Airways

Find Deal

Wed, 21 Jan - Sun, 25 Jan

09:05 - 22:20BHD-SEA

21h 15m2 stops

08:04 - 10:40SEA-BHD

18h 36m2 stops

£659American Airlines

Find Deal

Thu, 29 Jan - Mon, 2 Feb

17:20 - 11:50BHD-SEA

26h 30m1 stop

14:10 - 16:50SEA-BHD

18h 40m2 stops

£1,263Multiple Airlines

Find Deal

Sun, 21 Dec - Sun, 4 Jan

17:20 - 11:50BHD-SEA

26h 30m1 stop

15:10 - 16:50SEA-BHD

17h 40m1 stop

£1,353KLM

Find Deal

Sun, 21 Dec - Sun, 4 Jan

KLM flights from Belfast City Airport to Seattle

Our best KLM deals on Belfast City Airport to Seattle flight tickets

KLM

21 Dec

BHD17:20Belfast City

26h 30m

1 stop

SEA11:50Seattle/Tacoma Intl

4 Jan

SEA15:10Seattle/Tacoma Intl

17h 40m

1 stop

BHD16:50Belfast City

£1,353

Find similar

KLM

21 Dec

BHD06:30Belfast City

20h 06m

2 stops

SEA18:36Seattle/Tacoma Intl

4 Jan

SEA14:10Seattle/Tacoma Intl

18h 40m

2 stops

BHD16:50Belfast City

£1,363

Find similar

American Airlines flights from Belfast City Airport to Seattle

Our best American Airlines deals on Belfast City Airport to Seattle flight tickets

American Airlines

21 Jan

BHD09:15Belfast City

35h 59m

2 stops

SEA13:14Seattle/Tacoma Intl

25 Jan

SEA14:04Seattle/Tacoma Intl

42h 01m

2 stops

BHD16:05Belfast City

£628

Find similar

American Airlines

21 Jan

BHD09:15Belfast City

15h 40m

1 stop

SEA16:55Seattle/Tacoma Intl

25 Jan

SEA14:04Seattle/Tacoma Intl

36h 36m

2 stops

BHD10:40Belfast City

£629

Find similar

American Airlines

21 Jan

BHD06:35Belfast City

38h 39m

2 stops

SEA13:14Seattle/Tacoma Intl

25 Jan

SEA14:04Seattle/Tacoma Intl

42h 01m

2 stops

BHD16:05Belfast City

£640

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Belfast City Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/1

09:15-13:14

2 stops35h 59m

Seattle/Tacoma Intl

Sun 25/1

14:04-16:05

2 stops42h 01m

£628

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/1

09:15-16:55

1 stop15h 40m

Seattle/Tacoma Intl

Sun 25/1

14:04-10:40

2 stops36h 36m

£629

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/1

06:35-13:14

2 stops38h 39m

Seattle/Tacoma Intl

Sun 25/1

14:04-16:05

2 stops42h 01m

£640

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 29/1

09:05-11:30

1 stop34h 25m

Seattle/Tacoma Intl

Mon 2/2

08:04-14:15

2 stops22h 11m

£654

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 29/1

09:05-16:55

1 stop15h 50m

Seattle/Tacoma Intl

Mon 2/2

08:04-14:15

2 stops22h 11m

£655

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/1

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Sun 25/1

08:04-10:20

2 stops18h 16m

£657

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Wed 21/1

11:25-16:55

1 stop13h 30m

Seattle/Tacoma Intl

Sun 25/1

08:04-10:20

2 stops18h 16m

£658

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 29/1

09:05-22:20

2 stops21h 15m

Seattle/Tacoma Intl

Mon 2/2

08:04-10:40

2 stops18h 36m

£659

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 21/12

17:20-11:50

1 stop26h 30m

Seattle/Tacoma Intl

Sun 4/1

14:10-16:50

2 stops18h 40m

£1,263

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Sun 21/12

17:20-11:50

1 stop26h 30m

Seattle/Tacoma Intl

Sun 4/1

15:10-16:50

1 stop17h 40m

£1,353

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Belfast City Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Belfast City Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap Belfast City Airport to Seattle (BHD to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Belfast City Airport to Seattle

Direct flights	None

There are no direct flights from Belfast City Airport to Seattle. There are no popular flight routes from Belfast City Airport to Seattle.

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How far is Belfast City to Seattle/Tacoma Intl by plane?
The distance between Belfast City and Seattle/Tacoma Intl is about 4463.4 mi. By plane, this route typically takes 13h 30m.
When did momondo last update prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Belfast City Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How old do you have to be to fly from Belfast City Airport to Seattle/Tacoma Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Belfast City Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

How do I get Price Alerts for flights from Belfast City Airport to Seattle?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Belfast City Airport from Seattle. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Belfast City Airport to Seattle with momondo?
By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.
How does momondo find its flight prices?
We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Fife

Renton

SeaTac

Why use momondo?

Why should I use momondo to find a flight deal from Belfast to Seattle?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Belfast to Seattle . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Belfast to Seattle with flexible booking policies on momondo?

All flight searches from Belfast to Seattle on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Belfast to Seattle?

Once all potential Belfast to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Belfast to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Belfast to Seattle flights. All you need is a valid email address and we will do the rest; it is that quick and easy.