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Northern Ireland

$654+ Cheap flights from Washington to Northern Ireland

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
Mar 23 — Mar 301
Mon 3/23
Mon 3/30
1 adult, Economy
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Cheap flight deals from Washington to Northern Ireland

Cheapest flights from Washington to Northern Ireland
Explore the most affordable flight options available from Washington to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2026.

This oojo deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/67:30 pm
PDX
-
BHD
1 stop29h 30m
British Airways
Wed 4/158:35 pm
BHD
-
PDX
1 stop29h 05m
British Airways
Deal found 2/17$654
This Air France deal was found by Cheapflights users on 2/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/61:05 pm
PDX
-
BHD
1 stop19h 50m
Multiple Airlines
Wed 4/159:50 am
BHD
-
PDX
2 stops20h 26m
Multiple Airlines
Deal found 2/17$676
This British Airways deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:35 pm
SEA
-
BHD
1 stop12h 55m
British Airways
Mon 9/76:30 pm
BHD
-
SEA
1 stop25h 05m
British Airways
Deal found 2/19$707
This KLM deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/121:05 pm
PDX
-
BHD
1 stop12h 15m
KLM
Sat 4/185:30 pm
BHD
-
PDX
1 stop25h 40m
KLM
Deal found 2/16$711
This British Airways deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/261:35 pm
SEA
-
BHD
1 stop18h 05m
British Airways
Mon 9/77:35 pm
BHD
-
SEA
1 stop24h 00m
British Airways
Deal found 2/20$730
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:35 pm
SEA
-
BHD
1 stop12h 55m
British Airways
Tue 9/89:40 am
BHD
-
SEA
2 stops18h 22m
British Airways
Deal found 2/19$732
This FlightHub deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:35 pm
SEA
-
BHD
1 stop12h 55m
British Airways
Wed 9/96:30 am
BHD
-
SEA
2 stops24h 21m
British Airways
Deal found 2/19$733
This Cheapflightsfares deal was found by Cheapflights users on 2/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/161:35 pm
SEA
-
BHD
1 stop12h 35m
British Airways
Sun 4/266:30 am
BHD
-
SEA
1 stop13h 05m
British Airways
Deal found 2/18$735
This Mytrip deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/138:20 pm
SEA
-
BHD
1 stop28h 25m
British Airways
Mon 5/257:35 pm
BHD
-
SEA
1 stop24h 00m
British Airways
Deal found 2/19$745
This Cheapflightsfares deal was found by Cheapflights users on 2/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/291:35 pm
SEA
-
BHD
1 stop12h 30m
British Airways
Tue 9/89:40 am
BHD
-
SEA
1 stop16h 45m
British Airways
Deal found 2/19$755
This Cheapflightsfares deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/281:35 pm
SEA
-
BHD
1 stop20h 35m
British Airways
Tue 9/81:45 pm
BHD
-
SEA
1 stop12h 40m
British Airways
Deal found 2/20$765
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:50 am
SEA
-
BHD
2 stops23h 40m
British Airways
Tue 9/81:45 pm
BHD
-
SEA
1 stop12h 40m
British Airways
Deal found 2/20$766

Find flight deals from Washington to Northern Ireland

Keep the following information in mind while searching for Washington to Northern Ireland flight deals. Data was last updated February 21, 2026.

Round-trip from

$654
(oojo)
From Washington to Northern Ireland
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from 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, Cheapflights users made 2,558,603 searches. Data last updated February 21, 2026.
Use the filters below to find and compare flights from Washington to Northern Ireland that are best for you.

Fly from

Washington

Fly to

Northern Ireland

Route

Depart

Return

Price

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 4/6

7:30 pm-9:00 am

1 stop29h 30m

Belfast City

Wed 4/15

8:35 pm-5:40 pm

1 stop29h 05m

$654

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Mon 4/6

1:05 pm-4:55 pm

1 stop19h 50m

Belfast City

Wed 4/15

9:50 am-10:16 pm

2 stops20h 26m

$676

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Thu 4/16

1:35 pm-10:10 am

1 stop12h 35m

Belfast City

Sun 4/26

6:30 am-11:35 am

1 stop13h 05m

$735

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 5/13

8:20 pm-8:45 am

1 stop28h 25m

Belfast City

Mon 5/25

7:35 pm-11:35 am

1 stop24h 00m

$745

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sat 4/11

12:30 am-9:20 am

2 stops48h 50m

Belfast City

Sat 4/18

5:30 pm-11:10 am

1 stop25h 40m

$779

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

3:05 pm-4:50 pm

1 stop17h 45m

Belfast City

Wed 3/18

6:30 am-12:35 pm

1 stop13h 05m

$848

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 5/13

7:30 pm-7:50 pm

1 stop16h 20m

Belfast City

Sun 5/24

8:10 pm-9:51 pm

2 stops33h 41m

$853

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Wed 5/13

7:30 pm-7:50 pm

1 stop16h 20m

Belfast City

Sat 5/23

7:05 am-11:23 pm

2 stops24h 18m

$853

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 4/12

7:30 pm-8:50 am

1 stop29h 20m

Belfast City

Fri 4/17

7:35 pm-10:57 pm

2 stops35h 22m

$866

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Sun 4/12

1:05 pm-9:20 am

1 stop12h 15m

Belfast City

Fri 4/17

5:30 pm-11:10 am

1 stop25h 40m

$875

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/17

Showing 1-10 of 23 results
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Best time to book a flight from Washington to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Washington with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington to Northern Ireland
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Washington to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from State of Washington to Northern Ireland?

    British Airways and Delta can get you from State of Washington to Northern Ireland in just under 29h 30m. Your travel time can differ by up to 19h 20m. There are 4585 mi between State of Washington and Northern Ireland. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Washington to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Washington to Northern Ireland flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Northern Ireland.

  • Can I find deals for business class flights from Washington to Northern Ireland?

    Yes. Cheapflights offers flight deals from Washington to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Washington to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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