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Northern Ireland

$626+ Cheap flights from Dulles Intl (IAD) 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
Aug 23 — Aug 301
Sat 8/23
Sat 8/30
1 adult, Economy
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Cheap flight deals from Dulles Intl to Northern Ireland

Keep the following information in mind while searching for Dulles Intl to Northern Ireland flight deals. Data was last updated August 18, 2025.

Round-trip from

$632
(British Airways)

Popular in

June

Cheapest in

February

Average price

$618
From Washington, D.C. Dulles Intl to Northern Ireland
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($217 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Dulles Intl to Northern Ireland

Cheapest flights from Dulles Intl to Northern Ireland
Explore the most affordable flight options available from Dulles Intl to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

This Ovago deal was found by Cheapflights users on 8/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/306:20 pmIAD - BHD
1 stop14h 35mBritish Airways
Fri 12/126:45 amBHD - IAD
1 stop13h 50mBritish Airways
Deal found 8/16$626
This British Airways deal was found by Cheapflights users on 8/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/126:20 pmIAD - BHD
1 stop10h 55mBritish Airways
Sun 11/1612:10 pmBHD - IAD
1 stop32h 25mBritish Airways
Deal found 8/17$632
This Ovago deal was found by Cheapflights users on 8/18. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/145:50 pmIAD - BHD
1 stop10h 15mBritish Airways
Sun 9/218:05 pmBHD - IAD
2 stops27h 46mBritish Airways
Deal found 8/18$636
This Ovago deal was found by Cheapflights users on 8/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/610:45 pmIAD - BHD
1 stop29h 20mBritish Airways
Sat 12/206:00 pmBHD - IAD
1 stop26h 35mBritish Airways
Deal found 8/17$637
This FlightHub deal was found by Cheapflights users on 8/16. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/11:58 pmIAD - BHD
2 stops15h 42mBritish Airways
Sat 12/136:00 pmBHD - IAD
2 stops27h 30mBritish Airways
Deal found 8/16$641
This FlightHub deal was found by Cheapflights users on 8/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2610:40 pmIAD - BHD
1 stop14h 35mBritish Airways
Mon 9/297:30 pmBHD - IAD
2 stops28h 21mBritish Airways
Deal found 8/17$655
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/15:50 pmIAD - BFS
3 stops23h 10mMultiple Airlines
Wed 10/87:25 amBFS - IAD
3 stops42h 25mMultiple Airlines
Deal found 8/17$661
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/265:00 pmIAD - BFS
3 stops24h 35mMultiple Airlines
Mon 9/299:55 pmBFS - IAD
3 stops46h 25mMultiple Airlines
Deal found 8/17$664
This Mytrip deal was found by Cheapflights users on 8/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3010:20 pmIAD - BFS
3 stops19h 50mMultiple Airlines
Tue 10/77:25 amBFS - IAD
3 stops36h 55mMultiple Airlines
Deal found 8/16$668
This Mytrip deal was found by Cheapflights users on 8/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:30 pmIAD - BFS
3 stops21h 05mMultiple Airlines
Sun 9/219:00 pmBFS - IAD
3 stops47h 20mMultiple Airlines
Deal found 8/16$701

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl 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 August 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Northern Ireland that are best for you.

Fly from

Dulles Intl

Fly to

Northern Ireland

Route

Depart

Return

Price

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/12

6:20 pm-9:10 am

1 stop9h 50m

Belfast City

Sun 11/16

12:10 pm-3:35 pm

1 stop32h 25m

$632

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 9/14

5:50 pm-9:05 am

1 stop10h 15m

Belfast City

Sun 9/21

8:05 pm-6:51 pm

2 stops27h 46m

$636

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 9/6

10:45 pm-9:05 am

1 stop29h 20m

Belfast City

Sat 12/20

6:00 pm-3:35 pm

1 stop26h 35m

$637

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/19

10:40 pm-6:15 pm

1 stop14h 35m

Belfast City

Sun 9/21

8:05 pm-6:51 pm

2 stops27h 46m

$655

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 9/26

10:40 pm-6:15 pm

1 stop14h 35m

Belfast City

Mon 9/29

7:30 pm-6:51 pm

2 stops28h 21m

$655

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 10/1

5:50 pm-10:00 pm

3 stops23h 10m

Belfast Intl

Wed 10/8

7:25 am-8:50 pm

3 stops42h 25m

$661

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 9/26

5:00 pm-10:35 pm

3 stops24h 35m

Belfast Intl

Mon 9/29

9:55 pm-3:20 pm

3 stops46h 25m

$664

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Tue 9/30

10:20 pm-11:10 pm

3 stops19h 50m

Belfast Intl

Tue 10/7

7:25 am-3:20 pm

3 stops36h 55m

$668

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 9/19

8:30 pm-10:35 pm

3 stops21h 05m

Belfast Intl

Sun 9/21

9:00 pm-3:20 pm

3 stops47h 20m

$701

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Best time to book a flight from Dulles Intl to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Dulles Intl 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, D.C. Dulles Intl Airport to Northern Ireland
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated August 18, 2025.
Read reviews from past customers who have flown British Airways from Washington, D.C. Dulles Intl Airport to Northern Ireland. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,277 reviews

Food

6.3

Boarding

6.9

Overall

6.7

Comfort

6.7

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.
British Airways
6.7
Okay
7,277 reviews
British Airways
6.7
Okay
7,277 reviews

Food

6.3

Boarding

6.9

Overall

6.7

Comfort

6.7

Crew

7.6

Entertainment

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,May 2025

LAX - LHR

Entertainment system did not work. Seems like Wi-Fi should have been comped at hat point. Boarding at Marco Polo in Venice was terrible. Insisted on gate checking our bag but not others! Connection was confused and flight was very late.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl 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 Washington, D.C. Dulles Intl Airport to Northern Ireland?

    There are many flights that can get you from Washington, D.C. Dulles Intl Airport to Northern Ireland in 9h 50m. Fly via British Airways to get the fastest option. Airlines will cover a distance of 3390 mi.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Northern Ireland?

    Most travelers choose Washington, D.C. Dulles Intl - Belfast Intl, Washington, D.C. Dulles Intl - Belfast City or Washington, D.C. Dulles Intl - Campbeltown Machrihanish when deciding on the best route from Washington, D.C. Dulles Intl Airport to Northern Ireland.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl 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.

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

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland (average of $657). Flying from Washington, D.C. Dulles Intl Airport to Northern Ireland in June is currently the most expensive (average of $1,189). 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.

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Alternative routes for Dulles Intl to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Dulles Intl to Belfast Intl flights
Reagan-National to Inverness flights
Dulles Intl to Belfast City flights
Baltimore to Newcastle upon Tyne flights
Reagan-National to Belfast Intl flights
Reagan-National to Liverpool flights
Reagan-National to Belfast City flights
Reagan-National to Newcastle upon Tyne flights
Reagan-National to Leeds flights
Dulles Intl to Cardiff flights
Dulles Intl to Aberdeen flights
Baltimore to Leeds flights
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Baltimore to Aberdeen flights
Baltimore to Belfast City flights

Top airline flying from Dulles Intl to Northern Ireland

Discover the top airline that operate flights from Dulles Intl to Northern Ireland. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$620Average$847FlexibilityNo cancel feeOn-time70%

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