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Cheap flights from Seattle to Belfast from £250

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 15/1. 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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Find the cheapest flights from Seattle to Belfast

Cheap return flights

Enter your travel dates to find the best prices.
British Airways Logo
18:50 - 16:45
SEA
-
BHD
13h 55m1 stop
British Airways Logo
12:25 - 17:55
BHD
-
SEA
12h 30m1 stop
£450British Airways
lø., 7 mar. - on., 18 mar.
British Airways Logo
07:15 - 14:15
SEA
-
BHD
23h 00m2 stops
British Airways Logo
11:25 - 17:55
BHD
-
SEA
13h 30m1 stop
£462British Airways
lø., 7 mar. - on., 18 mar.
British Airways Logo
07:15 - 14:15
SEA
-
BHD
23h 00m2 stops
British Airways Logo
06:35 - 21:54
BHD
-
SEA
22h 19m2 stops
£465British Airways
lø., 7 mar. - on., 18 mar.
British Airways Logo
18:50 - 19:15
SEA
-
BHD
16h 25m1 stop
British Airways Logo
10:00 - 16:55
BHD
-
SEA
14h 55m1 stop
£466British Airways
fr., 30 jan. - ti., 3 feb.
British Airways Logo
17:45 - 19:15
SEA
-
BHD
17h 30m2 stops
British Airways Logo
11:25 - 14:34
BHD
-
SEA
35h 09m2 stops
£615British Airways
fr., 30 jan. - ti., 3 feb.
British Airways Logo
19:50 - 16:05
SEA
-
BHD
13h 15m1 stop
British Airways Logo
06:45 - 17:55
BHD
-
SEA
18h 10m1 stop
£722British Airways
ma., 23 mar. - fr., 27 mar.
British Airways Logo
13:37 - 14:15
SEA
-
BHD
17h 38m2 stops
British Airways Logo
06:45 - 17:55
BHD
-
SEA
18h 10m1 stop
£757British Airways
ma., 23 mar. - fr., 27 mar.
Multiple Airlines Logo
14:35 - 21:10
SEA
-
BHD
22h 35m2 stops
Multiple Airlines Logo
07:25 - 14:19
BHD
-
SEA
38h 54m3 stops
£772Multiple Airlines
to., 19 feb. - to., 26 feb.
British Airways Logo
13:37 - 14:15
SEA
-
BHD
17h 38m2 stops
British Airways Logo
08:45 - 21:16
BHD
-
SEA
19h 31m2 stops
£774British Airways
ma., 23 mar. - fr., 27 mar.
British Airways Logo
13:37 - 14:15
SEA
-
BHD
17h 38m2 stops
British Airways Logo
08:45 - 21:16
BHD
-
SEA
19h 31m2 stops
£786British Airways
ma., 23 mar. - fr., 27 mar.

British Airways flights from Seattle to Belfast City Airport

Our best British Airways deals on Seattle to Belfast City Airport flight tickets
British Airways
7 Mar
SEA18:50Seattle/Tacoma Intl
13h 55m
1 stop
BHD16:45Belfast City
18 Mar
BHD12:25Belfast City
12h 30m
1 stop
SEA17:55Seattle/Tacoma Intl
£450
Find similar
British Airways
7 Mar
SEA07:15Seattle/Tacoma Intl
23h 00m
2 stops
BHD14:15Belfast City
18 Mar
BHD11:25Belfast City
13h 30m
1 stop
SEA17:55Seattle/Tacoma Intl
£462
Find similar
British Airways
7 Mar
SEA07:15Seattle/Tacoma Intl
23h 00m
2 stops
BHD14:15Belfast City
18 Mar
BHD06:35Belfast City
22h 19m
2 stops
SEA21:54Seattle/Tacoma Intl
£465
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 12 Desember 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

lø. 7/3

18:50-16:45

1 stop13h 55m

Belfast City

on. 18/3

12:25-17:55

1 stop12h 30m

£450

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lø. 7/3

07:15-14:15

2 stops23h 00m

Belfast City

on. 18/3

11:25-17:55

1 stop13h 30m

£462

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

lø. 7/3

07:15-14:15

2 stops23h 00m

Belfast City

on. 18/3

06:35-21:54

2 stops22h 19m

£465

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

fr. 30/1

18:50-19:15

1 stop16h 25m

Belfast City

ti. 3/2

10:00-16:55

1 stop14h 55m

£466

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

fr. 30/1

17:45-19:15

2 stops17h 30m

Belfast City

ti. 3/2

11:25-14:34

2 stops35h 09m

£615

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 23/3

19:50-16:05

1 stop13h 15m

Belfast City

fr. 27/3

06:45-17:55

1 stop18h 10m

£722

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 23/3

13:37-14:15

2 stops17h 38m

Belfast City

fr. 27/3

06:45-17:55

1 stop18h 10m

£757

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

to. 19/2

14:35-21:10

2 stops22h 35m

Belfast City

to. 26/2

07:25-14:19

3 stops38h 54m

£772

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 23/3

13:37-14:15

2 stops17h 38m

Belfast City

fr. 27/3

08:45-21:16

2 stops19h 31m

£774

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

ma. 23/3

13:37-14:15

2 stops17h 38m

Belfast City

fr. 27/3

08:45-21:16

2 stops19h 31m

£786

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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?

British Airways is the most popular carrier 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

Fastest flight time

12h 55m

Direct flights

None
The fastest flight from Seattle to Belfast City Airport takes 12h 55m
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

  • 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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