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Cheap flights from Washington to Northern Ireland from £195

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Northern Ireland departing on 1/5. 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

Enter your travel dates to find the best prices.
British Airways Logo
13:35 - 14:15
SEA
-
BHD
16h 40m1 stop
British Airways Logo
06:35 - 12:30
BHD
-
SEA
12h 55m1 stop
£446British Airways
Sat, 7 Mar - Tue, 17 Mar
British Airways Logo
18:50 - 17:15
SEA
-
BHD
14h 25m1 stop
British Airways Logo
10:00 - 16:55
BHD
-
SEA
14h 55m1 stop
£464British Airways
Fri, 20 Feb - Tue, 24 Feb
British Airways Logo
17:45 - 17:15
PDX
-
BHD
15h 30m1 stop
British Airways Logo
15:05 - 15:55
BHD
-
PDX
32h 50m1 stop
£464British Airways
Fri, 20 Feb - Tue, 24 Feb
British Airways Logo
13:35 - 10:30
SEA
-
BHD
12h 55m1 stop
British Airways Logo
06:35 - 11:30
BHD
-
SEA
12h 55m1 stop
£464British Airways
Fri, 20 Feb - Tue, 24 Feb
British Airways Logo
17:45 - 14:15
PDX
-
BHD
12h 30m1 stop
British Airways Logo
17:15 - 15:55
BHD
-
PDX
30h 40m1 stop
£464British Airways
Fri, 20 Feb - Tue, 24 Feb
British Airways Logo
18:50 - 16:45
SEA
-
BHD
13h 55m1 stop
British Airways Logo
08:45 - 22:13
BHD
-
SEA
20h 28m2 stops
£465British Airways
Sat, 7 Mar - Tue, 17 Mar
British Airways Logo
18:50 - 10:20
SEA
-
BHD
31h 30m1 stop
British Airways Logo
17:35 - 16:55
BHD
-
SEA
31h 20m1 stop
£471British Airways
Wed, 4 Feb - Sun, 8 Feb
British Airways Logo
13:35 - 11:10
SEA
-
BHD
13h 35m1 stop
British Airways Logo
11:25 - 00:55
BHD
-
SEA
20h 30m2 stops
£472British Airways
Sat, 7 Mar - Wed, 18 Mar
American Airlines Logo
07:15 - 11:10
SEA
-
BHD
19h 55m2 stops
American Airlines Logo
08:45 - 21:54
BHD
-
SEA
20h 09m2 stops
£473American Airlines
Sat, 7 Mar - Tue, 17 Mar
Multiple Airlines Logo
07:05 - 09:10
PDX
-
BHD
18h 05m2 stops
Multiple Airlines Logo
11:25 - 00:09
BHD
-
PDX
20h 44m2 stops
£618Multiple Airlines
Wed, 14 Jan - Wed, 21 Jan

British Airways flights from State of Washington to Northern Ireland

Our best British Airways deals on State of Washington to Northern Ireland flight tickets
British Airways
7 Mar
SEA13:35Seattle/Tacoma Intl
16h 40m
1 stop
BHD14:15Belfast City
17 Mar
BHD06:35Belfast City
12h 55m
1 stop
SEA12:30Seattle/Tacoma Intl
£446
Find similar
British Airways
20 Feb
SEA18:50Seattle/Tacoma Intl
14h 25m
1 stop
BHD17:15Belfast City
24 Feb
BHD10:00Belfast City
14h 55m
1 stop
SEA16:55Seattle/Tacoma Intl
£464
Find similar
British Airways
20 Feb
SEA13:35Seattle/Tacoma Intl
12h 55m
1 stop
BHD10:30Belfast City
24 Feb
BHD06:35Belfast City
12h 55m
1 stop
SEA11:30Seattle/Tacoma Intl
£464
Find similar

American Airlines flights from State of Washington to Northern Ireland

Our best American Airlines deals on State of Washington to Northern Ireland flight tickets
American Airlines
7 Mar
SEA07:15Seattle/Tacoma Intl
19h 55m
2 stops
BHD11:10Belfast City
17 Mar
BHD08:45Belfast City
20h 09m
2 stops
SEA21:54Seattle/Tacoma Intl
£473
Find similar
American Airlines
8 May
SEA12:54Seattle/Tacoma Intl
18h 36m
2 stops
BHD15:30Belfast City
26 May
BHD06:35Belfast City
17h 25m
2 stops
SEA16:00Seattle/Tacoma Intl
£553
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from State of Washington to Northern Ireland 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 28 December 2025.
Use the filters below to find and compare flights from Washington to Northern Ireland that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

13:35-14:15

1 stop16h 40m

Belfast City

Tue 17/3

06:35-12:30

1 stop12h 55m

£446

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 20/2

18:50-17:15

1 stop14h 25m

Belfast City

Tue 24/2

10:00-16:55

1 stop14h 55m

£464

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 20/2

17:45-17:15

1 stop15h 30m

Belfast City

Tue 24/2

15:05-15:55

1 stop32h 50m

£464

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 20/2

13:35-10:30

1 stop12h 55m

Belfast City

Tue 24/2

06:35-11:30

1 stop12h 55m

£464

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 20/2

17:45-14:15

1 stop12h 30m

Belfast City

Tue 24/2

17:15-15:55

1 stop30h 40m

£464

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

18:50-16:45

1 stop13h 55m

Belfast City

Tue 17/3

08:45-22:13

2 stops20h 28m

£465

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 4/2

18:50-10:20

1 stop31h 30m

Belfast City

Sun 8/2

17:35-16:55

1 stop31h 20m

£471

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

13:35-11:10

1 stop13h 35m

Belfast City

Wed 18/3

11:25-00:55

2 stops20h 30m

£472

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 7/3

07:15-11:10

2 stops19h 55m

Belfast City

Tue 17/3

08:45-21:54

2 stops20h 09m

£473

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 14/1

07:05-09:10

2 stops18h 05m

Belfast City

Wed 21/1

11:25-00:09

2 stops20h 44m

£618

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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See travel insights to Northern Ireland from

How to get the cheapest flight ticket from State of Washington to Northern Ireland

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 Washington to Northern Ireland?

British Airways and American Airlines are the most popular carriers operating from Washington to Northern Ireland

Cheap State of Washington to Northern Ireland flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Northern Ireland

Fastest flight time

12h 30m

Direct flights

None
The fastest flight from State of Washington to Northern Ireland takes 12h 30m
There are no direct flights from State of Washington to Northern Ireland. There are no popular flight routes from State of Washington to Northern Ireland.
Search flight deals

  • When did momondo last update prices for flights from Washington to Northern Ireland?

    Prices for flights from Washington to Northern Ireland were last updated today.

  • How old do you have to be to fly from Washington to Northern Ireland?

    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 Washington to Northern Ireland.

  • What documentation or ID do you need to fly to Northern Ireland?

    The travel and health documents required for your trip to Northern Ireland can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Northern Ireland. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Northern Ireland?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Northern Ireland for you.

Can I find flights from Washington to Northern Ireland with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Washington to Northern Ireland flights to just show those with flexible booking policies.

How can momondo help me find flights from Washington to Northern Ireland?

Once all potential Washington to Northern Ireland flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to Northern Ireland from Washington. 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 Northern Ireland trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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