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Dulles Intl

$260+ Cheap flights from Northern Ireland to Dulles Intl (IAD)

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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
Jul 26 — Aug 21
Sun 7/26
Sun 8/2
1 adult, Economy
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Cheap flight deals from Northern Ireland to Dulles Intl

Cheapest flights from Northern Ireland to Dulles Intl
Explore the most affordable flight options available from Northern Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 26, 2026.

This Virgin Atlantic deal was found by Cheapflights users on 6/23. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:50 am
BHD
-
IAD
1 stop10h 45m
Virgin Atlantic
Thu 9/105:40 pm
IAD
-
BHD
1 stop18h 15m
Virgin Atlantic
Deal found 6/23$260
This Mytrip deal was found by Cheapflights users on 6/23. 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.
Thu 9/36:10 am
BFS
-
IAD
2 stops18h 10m
Multiple Airlines
Thu 9/108:30 pm
IAD
-
BFS
2 stops17h 50m
Multiple Airlines
Deal found 6/23$718
This Expedia deal was found by Cheapflights users on 6/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/26:30 am
BHD
-
IAD
1 stop14h 25m
British Airways
Tue 9/89:30 pm
IAD
-
BHD
1 stop12h 50m
British Airways
Deal found 6/21$734
This British Airways deal was found by Cheapflights users on 6/24. 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 9/57:05 am
BHD
-
IAD
1 stop17h 35m
British Airways
Tue 9/810:25 pm
IAD
-
BHD
1 stop11h 55m
British Airways
Deal found 6/24$785
This Mytrip deal was found by Cheapflights users on 6/21. 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 9/25:55 am
BFS
-
IAD
3 stops38h 15m
Multiple Airlines
Tue 9/811:20 pm
IAD
-
BFS
2 stops16h 45m
Multiple Airlines
Deal found 6/21$810
This British Airways deal was found by Cheapflights users on 6/24. 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 10/77:40 pm
BHD
-
IAD
2 stops28h 10m
British Airways
Sun 10/117:15 pm
IAD
-
BHD
1 stop10h 15m
British Airways
Deal found 6/24$831
This Mytrip deal was found by Cheapflights users on 6/23. 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 9/25:30 pm
BHD
-
IAD
3 stops30h 50m
Multiple Airlines
Thu 9/108:30 pm
IAD
-
BHD
2 stops17h 10m
Multiple Airlines
Deal found 6/23$833
This Mytrip deal was found by Cheapflights users on 6/25. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/97:10 am
BFS
-
IAD
2 stops17h 10m
Multiple Airlines
Sun 8/168:30 pm
IAD
-
BFS
2 stops20h 00m
Multiple Airlines
Deal found 6/25$906
This Mytrip deal was found by Cheapflights users on 6/23. 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 9/29:35 pm
BFS
-
IAD
2 stops27h 00m
Multiple Airlines
Thu 9/109:45 pm
IAD
-
BFS
2 stops17h 50m
Multiple Airlines
Deal found 6/23$931
This Mytrip deal was found by Cheapflights users on 6/21. 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.
Fri 6/267:20 am
BFS
-
IAD
3 stops18h 53m
Multiple Airlines
Thu 7/28:18 am
IAD
-
BFS
3 stops20h 22m
Multiple Airlines
Deal found 6/21$1,498

Find flight deals from Northern Ireland to Dulles Intl

Keep the following information in mind while searching for Northern Ireland to Dulles Intl flight deals. Data was last updated June 26, 2026.

Round-trip from

$260
(Virgin Atlantic)
From Northern Ireland to Washington, D.C. Dulles Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Northern Ireland to Dulles Intl 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 June 26, 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 9/3

9:50 am-11:26 pm

2 stops18h 36m

Washington, D.C. Dulles Intl

Thu 9/10

5:40 pm-4:55 pm

1 stop18h 15m

$262

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 9/2

9:50 am-12:34 am

2 stops19h 44m

Washington, D.C. Dulles Intl

Thu 9/10

5:40 pm-4:55 pm

1 stop18h 15m

$262

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 9/3

6:10 am-7:20 pm

2 stops18h 10m

Washington, D.C. Dulles Intl

Thu 9/10

8:30 pm-7:20 pm

2 stops17h 50m

$718
Quickest round-trip

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 9/2

9:50 am-12:34 am

2 stops19h 44m

Washington, D.C. Dulles Intl

Tue 9/8

5:40 pm-9:20 am

1 stop10h 40m

$785

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 9/5

7:05 am-7:40 pm

1 stop17h 35m

Washington, D.C. Dulles Intl

Tue 9/8

5:34 pm-6:55 pm

2 stops20h 21m

$788

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 9/2

5:55 am-3:10 pm

3 stops38h 15m

Washington, D.C. Dulles Intl

Tue 9/8

11:20 pm-9:05 pm

2 stops16h 45m

$810

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 10/7

7:40 pm-6:50 pm

2 stops28h 10m

Washington, D.C. Dulles Intl

Sun 10/11

7:15 pm-10:30 am

1 stop10h 15m

$831

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 9/2

9:35 pm-7:35 pm

2 stops27h 00m

Washington, D.C. Dulles Intl

Thu 9/10

9:45 pm-8:35 pm

2 stops17h 50m

$931

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 7/15

10:25 am-3:10 pm

3 stops33h 45m

Washington, D.C. Dulles Intl

Thu 7/16

8:30 pm-5:45 pm

2 stops16h 15m

$1,437

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 8/9

1:30 pm-3:45 pm

2 stops31h 15m

Washington, D.C. Dulles Intl

Sun 8/16

9:45 am-6:25 pm

3 stops27h 40m

$1,485

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/23

Showing 1-10 of 23 resultsSorted by cheapest first
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Best time to book a flight from Northern Ireland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Northern Ireland 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 Northern Ireland to Washington, D.C. Dulles Intl Airport
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 Northern Ireland to Dulles Intl. 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 Northern Ireland to Washington, D.C. Dulles Intl Airport?

    A quick flight from Northern Ireland to Washington, D.C. Dulles Intl Airport can take about 17h 35m. Virgin Atlantic provides one of the quickest options available for as low as $785. Airlines will cover a distance of 3390 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to Dulles Intl 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

Traveling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Alexandria
Arlington
Tysons
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Falls Church
Laurel
Fredericksburg
Hanover
Chantilly
Manassas
Waldorf
Silver Spring
Largo
Clinton

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