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Cheap flights from Seattle to Belfast from £305

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 20/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Find the cheapest flights from Seattle to Belfast

Cheap return flights

These are some of the best return flight deals from Seattle to Belfast that have been recently found on momondo from popular airlines, departing in the coming months.
 Logo
10:00 - 18:35SEA-BFS
24h 35m3 stops
 Logo
15:05 - 22:16BFS-SEA
39h 11m3 stops
Wed, 11 Jun - Wed, 18 Jun
 Logo
07:05 - 16:40SEA-BFS
25h 35m3 stops
 Logo
06:10 - 15:03BFS-SEA
40h 53m3 stops
Thu, 12 Jun - Thu, 19 Jun
 Logo
15:45 - 15:00SEA-BFS
15h 15m2 stops
 Logo
09:00 - 17:50BFS-SEA
16h 50m2 stops
Tue, 10 Jun - Tue, 17 Jun
 Logo
15:45 - 15:00SEA-BFS
15h 15m2 stops
 Logo
09:00 - 20:40BFS-SEA
19h 40m2 stops
Tue, 10 Jun - Tue, 17 Jun
 Logo
10:00 - 18:35SEA-BFS
24h 35m3 stops
 Logo
15:05 - 22:16BFS-SEA
39h 11m3 stops
Wed, 11 Jun - Wed, 18 Jun
Aer Lingus Logo
19:35 - 19:25SEA-BHD
15h 50m2 stops
Aer Lingus Logo
07:00 - 17:50BHD-SEA
18h 50m2 stops
£756Aer Lingus
Find Deal
Tue, 3 Jun - Tue, 10 Jun
British Airways Logo
20:20 - 19:25SEA-BHD
15h 05m1 stop
British Airways Logo
06:35 - 11:10BHD-SEA
12h 35m1 stop
£835British Airways
Find Deal
Tue, 3 Jun - Tue, 10 Jun
British Airways Logo
06:20 - 10:35SEA-BHD
20h 15m2 stops
British Airways Logo
06:35 - 11:10BHD-SEA
12h 35m1 stop
£861British Airways
Find Deal
Tue, 3 Jun - Tue, 10 Jun
Aer Lingus Logo
19:35 - 19:55SEA-BHD
16h 20m2 stops
Aer Lingus Logo
10:10 - 17:50BHD-SEA
15h 40m2 stops
£876Aer Lingus
Find Deal
Thu, 12 Jun - Thu, 19 Jun
Delta Logo
09:50 - 16:55SEA-BHD
23h 05m2 stops
Delta Logo
06:30 - 15:50BHD-SEA
17h 20m1 stop
£3,351Delta
Find Deal
Wed, 25 Jun - Sun, 6 Jul

Aer Lingus flights from Seattle to Belfast

Our best Aer Lingus deals on Seattle to Belfast flight tickets
Aer Lingus
3 Jun
SEA19:35Seattle/Tacoma Intl
15h 50m
2 stops
BHD19:25Belfast City
10 Jun
BHD07:00Belfast City
18h 50m
2 stops
SEA17:50Seattle/Tacoma Intl
Aer Lingus
12 Jun
SEA19:35Seattle/Tacoma Intl
16h 20m
2 stops
BHD19:55Belfast City
19 Jun
BHD10:10Belfast City
15h 40m
2 stops
SEA17:50Seattle/Tacoma Intl
Aer Lingus
16 Jun
SEA19:35Seattle/Tacoma Intl
14h 05m
2 stops
BHD17:40Belfast City
19 Jun
BHD06:45Belfast City
19h 05m
2 stops
SEA17:50Seattle/Tacoma Intl

British Airways flights from Seattle to Belfast

Our best British Airways deals on Seattle to Belfast flight tickets
British Airways
30 Apr
SEA13:30Seattle/Tacoma Intl
16h 00m
1 stop
BHD13:30Belfast City
12 May
BHD18:30Belfast City
24h 40m
1 stop
SEA11:10Seattle/Tacoma Intl
British Airways
30 Apr
SEA13:30Seattle/Tacoma Intl
16h 00m
1 stop
BHD13:30Belfast City
10 May
BHD19:00Belfast City
31h 20m
1 stop
SEA18:20Seattle/Tacoma Intl
British Airways
2 May
SEA13:35Seattle/Tacoma Intl
17h 55m
2 stops
BHD15:30Belfast City
12 May
BHD19:30Belfast City
23h 40m
1 stop
SEA11:10Seattle/Tacoma Intl

See travel insights to Belfast from

How to get the cheapest flight ticket from Seattle to Belfast

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?

British Airways and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Belfast

Cheap Seattle to Belfast flight deals and tips

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

Best price found

£305

Fastest flight time

13h 05m

Direct flights

None

Airports in Belfast

2 airports
The best one-way flight to Belfast from Seattle in the past 72 hours is £305. The best return flight deal from Seattle to Belfast found on momondo in the last 72 hours is £623.
The fastest flight from Seattle to Belfast takes 13h 05m
There are no direct flights from Seattle to Belfast. Popular non-direct routes for this connection are Seattle/Tacoma Intl Airport - Belfast Intl Airport and Seattle/Tacoma Intl Airport - Belfast City Airport.
There are 2 airports near Belfast: Belfast Intl (BFS), Belfast City (BHD)

  • How far is Seattle/Tacoma Intl to Belfast by plane?

    Seattle/Tacoma Intl and Belfast are 4463.0 mi apart from one another. 13h 05m is a normal flight duration for this route.

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

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

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

    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.

  • What documentation or ID do you need to fly to Belfast?

    The travel and health documents you'll need for your trip to Belfast may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Belfast. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.


Why use momondo?

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

Finding the right flight to Belfast from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Belfast quick and easy, saving you time and money.

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

Flights from Seattle to Belfast with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo provides multiple filters to help you find the best flight to Belfast from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Belfast, momondo offers a useful price alert feature which will track prices for flights to Belfast from Seattle and alert you when they change.


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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 12.2 mi from Belfast