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Northern Ireland

$213+ Cheap flights from Washington to Northern Ireland

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BFS
Jan 27 — Feb 31
Tue 1/27
Tue 2/3
1 adult, Economy
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Cheap flight deals from Washington to Northern Ireland

Best flights from Washington to Northern Ireland
Discover carefully curated flight deals from Washington to Northern Ireland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 28, 2025.

This oojo deal was found by Cheapflights users on 12/26. 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.
Sat 3/76:50 pmSEA - BHD
1 stop13h 55mBritish Airways
Tue 3/1711:25 amBHD - SEA
1 stop13h 30mBritish Airways
Deal found 12/26$602
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:15 amSEA - BHD
2 stops19h 55mAmerican Airlines
Tue 3/1710:00 amBHD - SEA
2 stops20h 30mAmerican Airlines
Deal found 12/26$639
This American Airlines deal was found by Cheapflights users on 12/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/710:22 amSEA - BHD
2 stops16h 48mMultiple Airlines
Wed 3/189:15 amBHD - SEA
2 stops19h 39mMultiple Airlines
Deal found 12/26$639
This KLM deal was found by Cheapflights users on 12/28. 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.
Thu 4/163:18 pmPDX - BHD
2 stops17h 37mKLM
Sat 4/255:30 pmBHD - PDX
1 stop25h 40mKLM
Deal found 12/28$756
This British Airways deal was found by Cheapflights users on 12/25. 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.
Fri 2/206:50 pmSEA - BHD
1 stop14h 25mBritish Airways
Tue 2/2410:00 amBHD - SEA
1 stop14h 55mBritish Airways
Deal found 12/25$626
This American Airlines deal was found by Cheapflights users on 12/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/77:15 amSEA - BHD
2 stops19h 55mAmerican Airlines
Wed 3/189:15 amBHD - SEA
2 stops19h 39mAmerican Airlines
Deal found 12/27$639
This British Airways deal was found by Cheapflights users on 12/25. 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.
Fri 2/205:45 pmPDX - BHD
1 stop15h 30mBritish Airways
Tue 2/243:05 pmBHD - PDX
1 stop32h 50mBritish Airways
Deal found 12/25$626
This British Airways deal was found by Cheapflights users on 12/25. 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 2/46:50 pmSEA - BHD
1 stop31h 30mBritish Airways
Sun 2/85:35 pmBHD - SEA
1 stop31h 20mBritish Airways
Deal found 12/25$636
This British Airways deal was found by Cheapflights users on 12/26. 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.
Sat 3/71:35 pmSEA - BHD
1 stop13h 35mBritish Airways
Wed 3/1811:25 amBHD - SEA
2 stops20h 30mBritish Airways
Deal found 12/26$637
This oojo deal was found by Cheapflights users on 12/28. 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.
Thu 4/167:30 pmPDX - BHD
1 stop15h 15mBritish Airways
Sat 4/257:00 pmBHD - PDX
1 stop30h 40mBritish Airways
Deal found 12/28$771
This oojo deal was found by Cheapflights users on 12/27. 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.
Wed 1/145:45 pmPDX - BHD
1 stop12h 30mBritish Airways
Wed 1/215:40 pmBHD - PDX
2 stops34h 42mBritish Airways
Deal found 12/27$823
This British Airways deal was found by Cheapflights users on 12/25. 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.
Thu 2/1910:48 amPDX - BHD
2 stops24h 02mBritish Airways
Mon 2/239:15 amBHD - PDX
1 stop14h 40mBritish Airways
Deal found 12/25$831

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 December 28, 2025.

Round-trip from

$602
(oojo)

One-way from

$213
(oojo)

Popular in

December

Cheapest in

April

Average price

$1,583
From Washington to Northern Ireland
Search Deals
One-way flight from Washington to Northern Ireland
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($128 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($59 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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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 December 28, 2025.
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

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

6:50 pm-4:45 pm

1 stop13h 55m

Belfast City

Tue 3/17

11:25 am-5:55 pm

1 stop13h 30m

$602

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Fri 2/20

6:50 pm-5:15 pm

1 stop14h 25m

Belfast City

Tue 2/24

10:00 am-4:55 pm

1 stop14h 55m

$626

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Fri 2/20

5:45 pm-5:15 pm

1 stop15h 30m

Belfast City

Tue 2/24

3:05 pm-3:55 pm

1 stop32h 50m

$626

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Wed 2/4

6:50 pm-10:20 am

1 stop31h 30m

Belfast City

Sun 2/8

5:35 pm-4:55 pm

1 stop31h 20m

$636

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

1:35 pm-11:10 am

1 stop13h 35m

Belfast City

Wed 3/18

11:25 am-12:55 am

2 stops20h 30m

$637

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-11:10 am

2 stops19h 55m

Belfast City

Tue 3/17

10:00 am-11:30 pm

2 stops20h 30m

$639

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

10:22 am-11:10 am

2 stops16h 48m

Belfast City

Wed 3/18

9:15 am-9:54 pm

2 stops19h 39m

$639

SeattleBelfast

SEA - BHD

SEABHD

Seattle/Tacoma Intl

Sat 3/7

7:15 am-11:10 am

2 stops19h 55m

Belfast City

Wed 3/18

9:15 am-9:54 pm

2 stops19h 39m

$639

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 4/16

3:18 pm-4:55 pm

2 stops17h 37m

Belfast City

Sat 4/25

5:30 pm-11:10 am

1 stop25h 40m

$756

PortlandBelfast

PDX - BHD

PDXBHD

Portland

Thu 4/16

7:30 pm-6:45 pm

1 stop15h 15m

Belfast City

Sat 4/25

7:00 pm-5:40 pm

1 stop30h 40m

$771

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 20 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 KLM can get you from State of Washington to Northern Ireland in just under 13h 55m. Your travel time can differ by up to 3h 42m. There are 4472 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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