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Cheap flights from Seattle to Belfast from £300

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 4/5. 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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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Seattle to Belfast.
British Airways Logo
20:20 - 20:45SEA-BHD
16h 25m1 stop
British Airways Logo
19:30 - 11:10BHD-SEA
23h 40m1 stop
£611British Airways
Find Deal
Wed, 30 Apr - Mon, 12 May
American Airlines Logo
13:35 - 15:30SEA-BHD
17h 55m2 stops
American Airlines Logo
15:50 - 11:35BHD-SEA
27h 45m1 stop
£628American Airlines
Find Deal
Fri, 2 May - Sun, 11 May
Delta Logo
07:10 - 21:15SEA-BHD
30h 05m2 stops
Delta Logo
17:25 - 11:40BHD-SEA
26h 15m1 stop
£711Delta
Find Deal
Sun, 4 May - Mon, 12 May
Delta Logo
07:10 - 21:15SEA-BHD
30h 05m2 stops
Delta Logo
17:25 - 18:50BHD-SEA
33h 25m2 stops
£719Delta
Find Deal
Sun, 4 May - Mon, 12 May
 Logo
15:45 - 17:20SEA-BHD
17h 35m2 stops
 Logo
07:05 - 00:10BHD-SEA
25h 05m3 stops
Thu, 15 May - Thu, 22 May
KLM Logo
14:10 - 21:15SEA-BHD
23h 05m1 stop
KLM Logo
06:30 - 11:40BHD-SEA
13h 10m1 stop
£727KLM
Find Deal
Thu, 15 May - Thu, 22 May
KLM Logo
14:10 - 21:15SEA-BHD
23h 05m1 stop
KLM Logo
06:30 - 16:08BHD-SEA
17h 38m2 stops
£734KLM
Find Deal
Thu, 15 May - Thu, 22 May
Aer Lingus Logo
18:45 - 19:55SEA-BHD
17h 10m2 stops
Aer Lingus Logo
18:15 - 16:59BHD-SEA
30h 44m2 stops
£745Aer Lingus
Find Deal
Tue, 15 Jul - Tue, 22 Jul
Aer Lingus Logo
18:45 - 20:55SEA-BHD
18h 10m2 stops
Aer Lingus Logo
18:00 - 16:59BHD-SEA
30h 59m2 stops
£762Aer Lingus
Find Deal
Sun, 11 May - Sun, 18 May
 Logo
13:30 - 15:35SEA-BHD
18h 05m1 stop
 Logo
06:55 - 20:28BHD-SEA
21h 33m2 stops
Wed, 30 Apr - Mon, 12 May

British Airways flights from Seattle to Belfast

Our best British Airways deals on Seattle to Belfast flight tickets
British Airways
30 Apr
SEA20:20Seattle/Tacoma Intl
16h 25m
1 stop
BHD20:45Belfast City
12 May
BHD19:30Belfast City
23h 40m
1 stop
SEA11:10Seattle/Tacoma Intl
British Airways
4 May
SEA20:20Seattle/Tacoma Intl
14h 25m
1 stop
BHD18:45Belfast City
12 May
BHD19:30Belfast City
23h 40m
1 stop
SEA11:10Seattle/Tacoma Intl
British Airways
30 Apr
SEA20:20Seattle/Tacoma Intl
16h 25m
1 stop
BHD20:45Belfast City
11 May
BHD18:05Belfast City
25h 30m
1 stop
SEA11:35Seattle/Tacoma Intl

American Airlines flights from Seattle to Belfast

Our best American Airlines deals on Seattle to Belfast flight tickets
American Airlines
2 May
SEA13:35Seattle/Tacoma Intl
17h 55m
2 stops
BHD15:30Belfast City
11 May
BHD15:50Belfast City
27h 45m
1 stop
SEA11:35Seattle/Tacoma Intl
American Airlines
2 May
SEA13:35Seattle/Tacoma Intl
17h 55m
2 stops
BHD15:30Belfast City
11 May
BHD06:50Belfast City
17h 10m
2 stops
SEA16:00Seattle/Tacoma Intl
American Airlines
2 May
SEA20:20Seattle/Tacoma Intl
16h 25m
1 stop
BHD20:45Belfast City
11 May
BHD15:50Belfast City
27h 45m
1 stop
SEA11:35Seattle/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?

Aer Lingus, American Airlines, and Iberia 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

£300

Fastest flight time

12h 35m

Direct flights

None

Airports in Belfast

1 airport
The best one-way flight to Belfast from Seattle in the past 72 hours is £300. The best return flight deal from Seattle to Belfast found on momondo in the last 72 hours is £611.
The fastest flight from Seattle to Belfast takes 12h 35m
There are no direct flights from Seattle to Belfast. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - Belfast City Airport.
There is 1 airport near Belfast: 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. 12h 35m 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