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

You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Belfast City Airport . 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 Seattle to Belfast City Airport with momondo?

With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.

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 Seattle/Tacoma Intl Airport to Belfast City Airport?

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Belfast City Airport.

What documentation or ID do you need to fly to Belfast City Airport?

The necessary travel and health documents for your Belfast City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£660 Cheap Flights from Seattle to Belfast City Airport in 2026/27

Find the cheapest flights from Seattle to Belfast

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

18:45 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

14h 05m1 stop London Heathrow

11:05 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

£660British Airways

Sun, 17 Jan - Thu, 21 Jan

19:00 - 20:30SEA Seattle/Tacoma Intl-BHD Belfast City

17h 30m2 stops Reykjavik Keflavik Intl London Gatwick

07:00 - 20:40BHD Belfast City-SEA Seattle/Tacoma Intl

21h 40m2 stops London Gatwick Reykjavik Keflavik Intl

£701Multiple Airlines

Sat, 10 Apr - Sat, 24 Apr

13:35 - 12:25SEA Seattle/Tacoma Intl-BHD Belfast City

14h 50m1 stop London Heathrow

07:05 - 11:35BHD Belfast City-SEA Seattle/Tacoma Intl

12h 30m1 stop London Heathrow

£718British Airways

Sat, 10 Apr - Sat, 24 Apr

20:20 - 19:20SEA Seattle/Tacoma Intl-BHD Belfast City

15h 00m1 stop London Heathrow

09:35 - 21:23BHD Belfast City-SEA Seattle/Tacoma Intl

19h 48m2 stops London Heathrow Dallas/Fort Worth

£729British Airways

Sat, 10 Apr - Sat, 24 Apr

14:39 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

18h 11m2 stops Chicago O'Hare Intl London Heathrow

06:30 - 11:25BHD Belfast City-SEA Seattle/Tacoma Intl

12h 55m1 stop London Heathrow

£843British Airways

Sun, 17 Jan - Thu, 21 Jan

15:44 - 16:50SEA Seattle/Tacoma Intl-BHD Belfast City

17h 06m2 stops Portland London Heathrow

07:00 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

17h 50m2 stops Edinburgh Turnhouse London Heathrow

£866British Airways

Sun, 17 Jan - Thu, 21 Jan

15:40 - 19:40SEA Seattle/Tacoma Intl-BHD Belfast City

20h 00m3 stops Reykjavik Keflavik Intl Kastrup Copenhagen Manchester

07:00 - 20:40BHD Belfast City-SEA Seattle/Tacoma Intl

21h 40m2 stops London Gatwick Reykjavik Keflavik Intl

£891Multiple Airlines

Sat, 10 Apr - Sat, 24 Apr

18:45 - 18:35SEA Seattle/Tacoma Intl-BHD Belfast City

15h 50m1 stop London Heathrow

17:50 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

31h 00m1 stop London Heathrow

£1,006British Airways

Mon, 11 Jan - Thu, 14 Jan

18:45 - 18:35SEA Seattle/Tacoma Intl-BHD Belfast City

15h 50m1 stop London Heathrow

17:50 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

31h 00m1 stop London Heathrow

£1,007British Airways

Mon, 11 Jan - Thu, 14 Jan

14:39 - 17:25SEA Seattle/Tacoma Intl-BHD Belfast City

18h 46m2 stops Chicago O'Hare Intl London Heathrow

11:05 - 16:50BHD Belfast City-SEA Seattle/Tacoma Intl

13h 45m1 stop London Heathrow

£1,189British Airways

Mon, 11 Jan - Thu, 14 Jan

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British Airways flights from Seattle to Belfast City Airport

Our best British Airways deals on Seattle to Belfast City Airport flight tickets

British Airways

17 Jan

SEA18:45Seattle/Tacoma Intl

14h 05m

1 stop

BHD16:50Belfast City

21 Jan

BHD11:05Belfast City

13h 45m

1 stop

SEA16:50Seattle/Tacoma Intl

£660

British Airways

17 Jan

SEA18:45Seattle/Tacoma Intl

14h 05m

1 stop

BHD16:50Belfast City

21 Jan

BHD11:05Belfast City

13h 45m

1 stop

SEA16:50Seattle/Tacoma Intl

£660

British Airways

17 Jan

SEA14:39Seattle/Tacoma Intl

18h 11m

2 stops

BHD16:50Belfast City

21 Jan

BHD06:30Belfast City

12h 55m

1 stop

SEA11:25Seattle/Tacoma Intl

£843

Finnair flights from Seattle to Belfast City Airport

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

Finnair

21 Feb

SEA10:38Seattle/Tacoma Intl

19h 12m

2 stops

BHD13:50Belfast City

28 Feb

BHD15:15Belfast City

33h 35m

1 stop

SEA16:50Seattle/Tacoma Intl

£4,281

Finnair

21 Feb

SEA18:45Seattle/Tacoma Intl

17h 25m

1 stop

BHD20:10Belfast City

28 Feb

BHD15:15Belfast City

33h 35m

1 stop

SEA16:50Seattle/Tacoma Intl

£4,584

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 17/1

18:45-16:50

1 stop14h 05m

Belfast City

Thu 21/1

11:05-16:50

1 stop13h 45m

£660

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/4

19:00-20:30

2 stops17h 30m

Belfast City

Sat 24/4

07:00-20:40

2 stops21h 40m

£701

Fastest return journey

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/4

13:35-12:25

1 stop14h 50m

Belfast City

Sat 24/4

07:05-11:35

1 stop12h 30m

£718

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/4

20:20-19:20

1 stop15h 00m

Belfast City

Sat 24/4

09:35-21:23

2 stops19h 48m

£729

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 17/1

14:39-16:50

2 stops18h 11m

Belfast City

Thu 21/1

06:30-11:25

1 stop12h 55m

£843

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sun 17/1

15:44-16:50

2 stops17h 06m

Belfast City

Thu 21/1

07:00-16:50

2 stops17h 50m

£866

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Sat 10/4

15:40-19:40

3 stops20h 00m

Belfast City

Sat 24/4

07:00-20:40

2 stops21h 40m

£891

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Mon 11/1

18:45-18:35

1 stop15h 50m

Belfast City

Thu 14/1

17:50-16:50

1 stop31h 00m

£1,006

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Mon 11/1

18:45-18:35

1 stop15h 50m

Belfast City

Thu 14/1

17:50-16:50

1 stop31h 00m

£1,007

SeattleBelfast

SEA Seattle/Tacoma Intl - BHD Belfast City

SEABHD

Seattle/Tacoma Intl

Mon 11/1

14:39-17:25

2 stops18h 46m

Belfast City

Thu 14/1

11:05-16:50

1 stop13h 45m

£1,189

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

When to book flights from Seattle to Belfast City Airport

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

Estimated return price

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

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

Best price found	£660
Fastest flight time	15h 50m
Direct flights	None

The best flight deal from Seattle to Belfast City Airport found on momondo in the last 72 hours is £660

The fastest flight from Seattle to Belfast City Airport takes 15h 50m

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

Search flight deals

Frequently asked questions about flying from Seattle to Belfast City Airport

How far is Seattle/Tacoma Intl to Belfast City by plane?
A flight from Seattle/Tacoma Intl to Belfast City will travel around 4463.4 mi. By plane, this route typically takes 15h 50m.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Belfast City Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Belfast City Airport are refreshed on a daily basis.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Belfast City Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Belfast City Airport.
What documentation or ID do you need to fly to Belfast City Airport?
The necessary travel and health documents for your Belfast City Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Seattle to Belfast City Airport

How do I get Price Alerts for flights from Seattle to Belfast City Airport?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Belfast City Airport. 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 Seattle to Belfast City Airport with momondo?
With “Price Forecast”, learn how soon you should book your flight in advance. Down to the day of week and time of day, our information can inform you on the ideal time to book to save on your travel. Our “Price Calendar” shows you at a quick glance when to book your travel for lower rates. By setting “Price Alerts” you can monitor changes in price and target the ideal time to book. Search for your trip destination by budget amount via our “Explore” feature. Whether you’re looking for ideas for your next travel adventure or cost-cutting tips, our “Discover” content is a great place to start.
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.

Newcastle

Bangor

Carrickfergus

Why use momondo?

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

It is quick and easy to find Seattle to Belfast flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Belfast that suits you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Belfast from Seattle.

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

Yes momondo offers price alerts on flights to Belfast from Seattle. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.