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Dulles Intl

$388+ Cheap flights from Northern Ireland to Dulles Intl (IAD)

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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheap 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 septiembre 15, 2025.

Round-trip from

$671
(American Airlines)

One-way from

$388
(Kiwi.com)
From Northern Ireland to Washington, D.C. Dulles Intl
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One-way flight from Northern Ireland to Washington, D.C. Dulles Intl
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Find 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 septiembre 15, 2025.

This American Airlines deal was found by Cheapflights users on 9/13. 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.
jue. 11/2011:05 amBHD - IAD
1 stop13h 50mAmerican Airlines
lun. 11/2411:25 amIAD - BHD
2 stops21h 50mAmerican Airlines
Deal found 9/13$671
This KLM deal was found by Cheapflights users on 9/15. 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.
jue. 10/96:30 amBHD - IAD
1 stop14h 05mKLM
jue. 10/169:20 pmIAD - BHD
2 stops14h 35mKLM
Deal found 9/15$703
This TravelUp deal was found by Cheapflights users on 9/14. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/126:50 amBHD - IAD
1 stop18h 30mMultiple Airlines
dom. 10/191:09 pmIAD - BHD
2 stops17h 21mMultiple Airlines
Deal found 9/14$739
This TravelUp deal was found by Cheapflights users on 9/14. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 10/1211:00 amBHD - IAD
2 stops17h 53mBritish Airways
dom. 10/195:41 pmIAD - BHD
2 stops15h 59mBritish Airways
Deal found 9/14$745
This KLM deal was found by Cheapflights users on 9/15. 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.
vie. 10/106:30 amBHD - IAD
1 stop14h 05mKLM
dom. 10/125:25 pmIAD - BHD
1 stop22h 50mKLM
Deal found 9/15$772
This Mytrip deal was found by Cheapflights users on 9/14. 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.
jue. 10/304:15 pmBFS - IAD
3 stops33h 45mMultiple Airlines
jue. 11/65:30 pmIAD - BFS
2 stops23h 50mMultiple Airlines
Deal found 9/14$788
This Mytrip deal was found by Cheapflights users on 9/15. 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.
vie. 10/106:05 amBFS - IAD
2 stops21h 05mMultiple Airlines
dom. 10/128:30 pmIAD - BFS
2 stops18h 50mMultiple Airlines
Deal found 9/15$793
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/106:30 amBHD - IAD
2 stops21h 30mDelta
dom. 10/125:25 pmIAD - BHD
1 stop18h 30mDelta
Deal found 9/15$832
This Mytrip deal was found by Cheapflights users on 9/15. 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.
vie. 10/107:00 amBHD - IAD
2 stops20h 10mMultiple Airlines
dom. 10/128:30 pmIAD - BHD
2 stops18h 55mMultiple Airlines
Deal found 9/15$849

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 septiembre 15, 2025.
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

Northern Ireland

Fly to

Dulles Intl

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

jue. 11/20

11:05 am-7:55 pm

1 stop13h 50m

Washington, D.C. Dulles Intl

lun. 11/24

6:20 pm-10:40 am

1 stop11h 20m

$671

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

jue. 10/9

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

jue. 10/16

5:25 pm-9:15 pm

1 stop22h 50m

$714

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

dom. 10/12

6:50 am-8:20 pm

1 stop18h 30m

Washington, D.C. Dulles Intl

dom. 10/19

1:09 pm-11:30 am

2 stops17h 21m

$739

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

dom. 10/12

11:00 am-11:53 pm

2 stops17h 53m

Washington, D.C. Dulles Intl

dom. 10/19

5:41 pm-2:40 pm

2 stops15h 59m

$745

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

vie. 10/10

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

dom. 10/12

5:25 pm-9:15 pm

1 stop22h 50m

$772

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

vie. 10/10

6:05 am-10:10 pm

2 stops21h 05m

Washington, D.C. Dulles Intl

dom. 10/12

8:30 pm-8:20 pm

2 stops18h 50m

$793

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

vie. 10/10

6:30 am-11:00 pm

2 stops21h 30m

Washington, D.C. Dulles Intl

dom. 10/12

5:25 pm-4:55 pm

1 stop18h 30m

$832

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

jue. 10/30

6:30 am-7:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

jue. 11/6

7:40 pm-10:20 pm

2 stops21h 40m

$840

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

vie. 10/10

7:00 am-10:10 pm

2 stops20h 10m

Washington, D.C. Dulles Intl

dom. 10/12

8:30 pm-8:25 pm

2 stops18h 55m

$849

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

mar. 10/14

9:25 pm-3:20 pm

3 stops46h 55m

$388

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 12 results
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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 13h 50m. American Airlines provides one of the quickest options available for as low as $671. 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.

  • What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Dulles Intl Airport (average of $292). Flying from Northern Ireland to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Springfield
Gaithersburg
Fredericksburg
Linthicum Heights
Fairfax
Falls Church
Owings Mills
Manassas
Rockville
Hanover
Oxon Hill
Laurel
Towson
National Harbor
Dundalk

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Alternative routes for Northern Ireland to Dulles Intl

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