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.

£624 Cheap Flights from Belfast City Airport to Seattle in 2025/26

1 adult

0 bags

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Belfast City Airport to Seattle

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:30 - 11:45BHD-SEA

13h 15m1 stop

15:00 - 16:50SEA-BHD

17h 50m1 stop

£624KLM

Find Deal

Tue, 4 Nov - Wed, 12 Nov

06:30 - 16:54BHD-SEA

18h 24m2 stops

15:00 - 16:50SEA-BHD

17h 50m1 stop

£632KLM

Find Deal

Tue, 4 Nov - Wed, 12 Nov

06:30 - 16:54BHD-SEA

18h 24m2 stops

14:02 - 16:50SEA-BHD

18h 48m2 stops

£647KLM

Find Deal

Tue, 4 Nov - Wed, 12 Nov

10:40 - 11:30BHD-SEA

32h 50m1 stop

19:50 - 18:35SEA-BHD

15h 45m1 stop

£656American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

11:05 - 16:55BHD-SEA

13h 50m1 stop

19:50 - 18:35SEA-BHD

15h 45m1 stop

£657American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

06:35 - 16:55BHD-SEA

18h 20m1 stop

13:48 - 14:15SEA-BHD

17h 27m2 stops

£657American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

10:40 - 23:07BHD-SEA

20h 27m2 stops

07:00 - 18:35SEA-BHD

28h 35m2 stops

£660American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

11:05 - 23:07BHD-SEA

20h 02m2 stops

07:00 - 14:15SEA-BHD

24h 15m2 stops

£660American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

09:05 - 12:28BHD-SEA

35h 23m2 stops

13:48 - 14:15SEA-BHD

17h 27m2 stops

£662American Airlines

Find Deal

Thu, 5 Mar - Mon, 9 Mar

KLM flights from Belfast City Airport to Seattle

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

KLM

4 Nov

BHD06:30Belfast City

13h 15m

1 stop

SEA11:45Seattle/Tacoma Intl

12 Nov

SEA15:00Seattle/Tacoma Intl

17h 50m

1 stop

BHD16:50Belfast City

£624

Find similar

KLM

4 Nov

BHD06:30Belfast City

18h 24m

2 stops

SEA16:54Seattle/Tacoma Intl

12 Nov

SEA15:00Seattle/Tacoma Intl

17h 50m

1 stop

BHD16:50Belfast City

£632

Find similar

KLM

4 Nov

BHD06:30Belfast City

18h 24m

2 stops

SEA16:54Seattle/Tacoma Intl

12 Nov

SEA14:02Seattle/Tacoma Intl

18h 48m

2 stops

BHD16:50Belfast City

£647

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

5 Mar

BHD10:40Belfast City

32h 50m

1 stop

SEA11:30Seattle/Tacoma Intl

9 Mar

SEA19:50Seattle/Tacoma Intl

15h 45m

1 stop

BHD18:35Belfast City

£656

Find similar

American Airlines

5 Mar

BHD11:05Belfast City

13h 50m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA19:50Seattle/Tacoma Intl

15h 45m

1 stop

BHD18:35Belfast City

£657

Find similar

American Airlines

5 Mar

BHD06:35Belfast City

18h 20m

1 stop

SEA16:55Seattle/Tacoma Intl

9 Mar

SEA13:48Seattle/Tacoma Intl

17h 27m

2 stops

BHD14:15Belfast City

£657

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

Tue 4/11

06:30-11:45

1 stop13h 15m

Seattle/Tacoma Intl

Wed 12/11

15:00-16:50

1 stop17h 50m

£624

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 4/11

06:30-16:54

2 stops18h 24m

Seattle/Tacoma Intl

Wed 12/11

15:00-16:50

1 stop17h 50m

£632

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Tue 4/11

06:30-16:54

2 stops18h 24m

Seattle/Tacoma Intl

Wed 12/11

14:02-16:50

2 stops18h 48m

£647

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

10:40-11:30

1 stop32h 50m

Seattle/Tacoma Intl

Mon 9/3

19:50-18:35

1 stop15h 45m

£656

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

11:05-16:55

1 stop13h 50m

Seattle/Tacoma Intl

Mon 9/3

19:50-18:35

1 stop15h 45m

£657

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

06:35-16:55

1 stop18h 20m

Seattle/Tacoma Intl

Mon 9/3

13:48-14:15

2 stops17h 27m

£657

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

10:40-23:07

2 stops20h 27m

Seattle/Tacoma Intl

Mon 9/3

07:00-18:35

2 stops28h 35m

£660

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

11:05-23:07

2 stops20h 02m

Seattle/Tacoma Intl

Mon 9/3

07:00-14:15

2 stops24h 15m

£660

BelfastSeattle

BHD - SEA

BHDSEA

Belfast City

Thu 5/3

09:05-12:28

2 stops35h 23m

Seattle/Tacoma Intl

Mon 9/3

13:48-14:15

2 stops17h 27m

£662

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.

Search flight deals

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 15m.
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.