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Dulles Intl

$968+ 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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
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 May 7, 2026.

This Mytrip deal was found by Cheapflights users on 5/5. 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 5/216:40 am
BFS
-
IAD
2 stops14h 05m
Multiple Airlines
Mon 5/255:15 pm
IAD
-
BFS
2 stops13h 00m
Multiple Airlines
Deal found 5/5$968
This Mytrip deal was found by Cheapflights users on 5/4. 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.
Mon 8/248:15 pm
BFS
-
IAD
3 stops47h 55m
Multiple Airlines
Sat 8/298:30 pm
IAD
-
BFS
2 stops18h 45m
Multiple Airlines
Deal found 5/4$982
This American Airlines deal was found by Cheapflights users on 5/5. 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.
Tue 6/236:30 am
BHD
-
IAD
1 stop14h 20m
American Airlines
Tue 8/1110:25 pm
IAD
-
BHD
1 stop11h 55m
American Airlines
Deal found 5/5$989
This British Airways deal was found by Cheapflights users on 5/4. 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 11/1111:25 am
BHD
-
IAD
1 stop13h 30m
British Airways
Sun 11/154:34 pm
IAD
-
BHD
2 stops21h 06m
British Airways
Deal found 5/4$994
This Mytrip deal was found by Cheapflights users on 5/5. 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 5/217:00 am
BHD
-
IAD
3 stops42h 29m
Multiple Airlines
Mon 5/259:55 am
IAD
-
BHD
3 stops25h 35m
Multiple Airlines
Deal found 5/5$1,086
This Mytrip deal was found by Cheapflights users on 5/2. 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.
Tue 6/168:10 pm
BFS
-
IAD
3 stops29h 19m
Multiple Airlines
Tue 6/238:18 am
IAD
-
BFS
3 stops25h 57m
Multiple Airlines
Deal found 5/2$1,094
This Mytrip deal was found by Cheapflights users on 5/2. 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 5/159:00 pm
BFS
-
IAD
2 stops23h 45m
Multiple Airlines
Sun 5/175:15 pm
IAD
-
BFS
2 stops15h 00m
Multiple Airlines
Deal found 5/2$1,133
This Mytrip deal was found by Cheapflights users on 5/4. 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 6/188:05 pm
BFS
-
IAD
2 stops29h 35m
Multiple Airlines
Thu 6/255:15 pm
IAD
-
BFS
2 stops17h 40m
Multiple Airlines
Deal found 5/4$1,251
This Mytrip deal was found by Cheapflights users on 5/5. 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 6/197:25 am
BFS
-
IAD
2 stops16h 35m
Multiple Airlines
Fri 6/265:15 pm
IAD
-
BFS
2 stops23h 00m
Multiple Airlines
Deal found 5/5$1,339

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 May 7, 2026.

Round-trip from

$968
(Mytrip)
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 May 7, 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.

BFS - IAD

BFSIAD

Belfast Intl

Thu 5/21

6:40 am-3:45 pm

2 stops14h 05m

Washington, D.C. Dulles Intl

Mon 5/25

5:15 pm-11:15 am

2 stops13h 00m

$968

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 6/23

6:30 am-3:50 pm

1 stop14h 20m

Washington, D.C. Dulles Intl

Tue 8/11

10:25 pm-3:20 pm

1 stop11h 55m

$989

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/21

7:00 am-3:45 pm

2 stops13h 45m

Washington, D.C. Dulles Intl

Mon 5/25

5:15 pm-4:30 pm

2 stops18h 15m

$994

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 6/16

8:10 pm-8:29 pm

3 stops29h 19m

Washington, D.C. Dulles Intl

Tue 6/23

8:18 am-3:15 pm

3 stops25h 57m

$1,094
Quickest round-trip

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 6/23

9:40 am-3:50 pm

1 stop11h 10m

Washington, D.C. Dulles Intl

Tue 8/11

9:30 pm-3:20 pm

1 stop12h 50m

$1,139

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 8/24

8:00 am-7:20 pm

2 stops16h 20m

Washington, D.C. Dulles Intl

Sat 8/29

11:20 pm-9:30 pm

2 stops17h 10m

$1,154

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/18

8:05 pm-8:40 pm

2 stops29h 35m

Washington, D.C. Dulles Intl

Thu 6/25

5:15 pm-3:55 pm

2 stops17h 40m

$1,251

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 6/19

7:25 am-7:00 pm

2 stops16h 35m

Washington, D.C. Dulles Intl

Fri 6/26

5:15 pm-9:15 pm

2 stops23h 00m

$1,339

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 6/18

6:30 am-5:30 pm

1 stop16h 00m

Washington, D.C. Dulles Intl

Thu 6/25

5:40 pm-6:45 pm

1 stop20h 05m

$1,361

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 5/21

9:50 am-12:51 am

2 stops20h 01m

Washington, D.C. Dulles Intl

Mon 5/25

6:10 pm-9:20 am

1 stop10h 10m

$1,373

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/5

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 14h 20m. American Airlines provides one of the quickest options available for as low as $989. Airlines will cover a distance of 3390 mi.

  • 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
Tysons
Owings Mills
Springfield
Arlington
Silver Spring
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Woodbridge
Hanover
Laurel
Largo
Upper Marlboro
Waldorf
Clinton
Hunt Valley
Cordova

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