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Cheap flights from Seattle to Belfast from £281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Belfast departing on 26/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
18:50 - 18:00SEA-BHD
15h 10m1 stop
British Airways Logo
06:45 - 11:30BHD-SEA
12h 45m1 stop
£495British Airways
Find Deal
Thu, 4 Dec - Fri, 12 Dec
Finnair Logo
08:30 - 14:15SEA-BHD
21h 45m2 stops
Finnair Logo
11:30 - 16:55BHD-SEA
13h 25m1 stop
£499Finnair
Find Deal
Wed, 3 Dec - Fri, 12 Dec
British Airways Logo
18:50 - 07:30SEA-BHD
28h 40m1 stop
British Airways Logo
17:35 - 16:55BHD-SEA
31h 20m1 stop
£501British Airways
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Virgin Atlantic Logo
07:20 - 21:00SEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
17:20 - 11:50BHD-SEA
26h 30m1 stop
£512Virgin Atlantic
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Delta Logo
21:59 - 16:50SEA-BHD
34h 51m2 stops
Delta Logo
06:30 - 11:50BHD-SEA
13h 20m1 stop
£513Delta
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Virgin Atlantic Logo
07:20 - 21:00SEA-BHD
29h 40m2 stops
Virgin Atlantic Logo
17:20 - 20:00BHD-SEA
34h 40m2 stops
£520Virgin Atlantic
Find Deal
Wed, 3 Dec - Sun, 7 Dec
Delta Logo
07:10 - 21:00SEA-BHD
29h 50m2 stops
Delta Logo
17:20 - 14:59BHD-SEA
29h 39m2 stops
£520Delta
Find Deal
Wed, 3 Dec - Thu, 11 Dec
Multiple Airlines Logo
14:35 - 19:35SEA-BHD
21h 00m2 stops
Multiple Airlines Logo
07:25 - 17:00BHD-SEA
17h 35m2 stops
£581Multiple Airlines
Find Deal
Thu, 20 Nov - Thu, 27 Nov
Multiple Airlines Logo
13:35 - 14:15SEA-BHD
16h 40m1 stop
Multiple Airlines Logo
11:25 - 00:49BHD-SEA
20h 24m2 stops
£585Multiple Airlines
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Sat, 7 Mar - Tue, 17 Mar
KLM Logo
15:00 - 16:50SEA-BHD
17h 50m1 stop
KLM Logo
06:30 - 15:54BHD-SEA
17h 24m2 stops
£666KLM
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Thu, 20 Nov - Thu, 27 Nov

Delta flights from Seattle to Belfast City Airport

Our best Delta deals on Seattle to Belfast City Airport flight tickets
Delta
3 Dec
SEA21:59Seattle/Tacoma Intl
34h 51m
2 stops
BHD16:50Belfast City
7 Dec
BHD06:30Belfast City
13h 20m
1 stop
SEA11:50Seattle/Tacoma Intl
£513
Find similar
Delta
3 Dec
SEA07:10Seattle/Tacoma Intl
29h 50m
2 stops
BHD21:00Belfast City
11 Dec
BHD17:20Belfast City
29h 39m
2 stops
SEA14:59Seattle/Tacoma Intl
£520
Find similar
Delta
3 Dec
SEA07:10Seattle/Tacoma Intl
29h 50m
2 stops
BHD21:00Belfast City
12 Dec
BHD17:20Belfast City
48h 05m
2 stops
SEA09:25Seattle/Tacoma Intl
£524
Find similar

British Airways flights from Seattle to Belfast City Airport

Our best British Airways deals on Seattle to Belfast City Airport flight tickets
British Airways
4 Dec
SEA18:50Seattle/Tacoma Intl
15h 10m
1 stop
BHD18:00Belfast City
12 Dec
BHD06:45Belfast City
12h 45m
1 stop
SEA11:30Seattle/Tacoma Intl
£495
Find similar
British Airways
3 Dec
SEA18:50Seattle/Tacoma Intl
28h 40m
1 stop
BHD07:30Belfast City
7 Dec
BHD17:35Belfast City
31h 20m
1 stop
SEA16:55Seattle/Tacoma Intl
£501
Find similar
British Airways
3 Dec
SEA18:50Seattle/Tacoma Intl
28h 40m
1 stop
BHD07:30Belfast City
11 Dec
BHD17:45Belfast City
25h 45m
1 stop
SEA11:30Seattle/Tacoma Intl
£502
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Seattle to Belfast City Airport 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, momondo users made 279,928 searches. Data last updated 17 October 2025.
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

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 4/12

18:50-18:00

1 stop15h 10m

Belfast City

Fri 12/12

06:45-11:30

1 stop12h 45m

£495

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

08:30-14:15

2 stops21h 45m

Belfast City

Fri 12/12

11:30-16:55

1 stop13h 25m

£499

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

18:50-07:30

1 stop28h 40m

Belfast City

Sun 7/12

17:35-16:55

1 stop31h 20m

£501

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

07:20-21:00

2 stops29h 40m

Belfast City

Sun 7/12

17:20-11:50

1 stop26h 30m

£512

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

21:59-16:50

2 stops34h 51m

Belfast City

Sun 7/12

06:30-11:50

1 stop13h 20m

£513

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

07:20-21:00

2 stops29h 40m

Belfast City

Sun 7/12

17:20-20:00

2 stops34h 40m

£520

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 3/12

07:10-21:00

2 stops29h 50m

Belfast City

Thu 11/12

17:20-14:59

2 stops29h 39m

£520

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 20/11

14:35-19:35

2 stops21h 00m

Belfast City

Thu 27/11

07:25-17:00

2 stops17h 35m

£581

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

13:35-14:15

1 stop16h 40m

Belfast City

Tue 17/3

11:25-00:49

2 stops20h 24m

£585

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 20/11

15:00-16:50

1 stop17h 50m

Belfast City

Thu 27/11

06:30-15:54

2 stops17h 24m

£666

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Seattle to Belfast City Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Seattle/Tacoma Intl to Belfast City?

Aer Lingus, Virgin Atlantic, and American Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Belfast City

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

Direct flights

None
There are no direct flights from Seattle to Belfast City Airport. There are no popular flight routes from Seattle to Belfast City Airport.
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  • 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 12h 55m.

  • 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.

Travelling to a place near Belfast?

Book flights to Belfast if you plan to visit one of these locations
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.

An easier way to manage your Belfast City Airport trip

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