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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £466

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/8. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
24 Aug — 31 Aug1
1 adult

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 19 August 2025.

Round-trip from

£467

Popular in

June

Cheapest in

February

Average price

£457
British Airways
  • British Airways
  • 12/11-16/11
  • 2 total stops
  • 25h 35m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£118 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

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 19 August 2025.

Mon 25/816:36IAD - BHD
2 stops18h 04mBritish Airways
Mon 8/918:30BHD - IAD
2 stops25h 30mBritish Airways
Deal found 18/8£466
Wed 12/1118:20IAD - BHD
1 stop9h 50mBritish Airways
Sun 16/1109:10BHD - IAD
1 stop15h 45mBritish Airways
Deal found 18/8£467
Sun 14/917:50IAD - BHD
1 stop10h 15mBritish Airways
Sun 21/920:05BHD - IAD
2 stops27h 46mBritish Airways
Deal found 18/8£470
Sat 6/922:45IAD - BHD
1 stop29h 20mBritish Airways
Sat 20/1218:00BHD - IAD
1 stop26h 35mBritish Airways
Deal found 17/8£471
Fri 26/922:40IAD - BHD
1 stop14h 35mBritish Airways
Mon 29/919:30BHD - IAD
2 stops28h 21mBritish Airways
Deal found 17/8£484
Thu 2/1022:20IAD - BFS
3 stops18h 20mMultiple Airlines
Thu 9/1009:25BFS - IAD
3 stops34h 55mMultiple Airlines
Deal found 18/8£484
Wed 1/1017:50IAD - BFS
3 stops23h 10mMultiple Airlines
Wed 8/1007:25BFS - IAD
3 stops42h 25mMultiple Airlines
Deal found 17/8£488
Fri 26/917:00IAD - BFS
3 stops24h 35mMultiple Airlines
Mon 29/921:55BFS - IAD
3 stops46h 25mMultiple Airlines
Deal found 18/8£490
Sat 15/1119:40IAD - BFS
2 stops15h 30mMultiple Airlines
Sat 22/1108:10BFS - IAD
2 stops15h 20mMultiple Airlines
Deal found 19/8£492
Fri 19/920:30IAD - BFS
3 stops21h 05mMultiple Airlines
Sun 21/921:00BFS - IAD
3 stops47h 20mMultiple Airlines
Deal found 16/8£518
Fri 19/922:40IAD - BHD
1 stop14h 35mBritish Airways
Sun 21/920:05BHD - IAD
1 stop24h 55mBritish Airways
Deal found 16/8£553

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 19 August 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 12/11

18:20-10:15

1 stop10h 55m

Belfast City

Sun 16/11

10:40-15:35

1 stop33h 55m

£467

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 14/9

17:50-09:05

1 stop10h 15m

Belfast City

Sun 21/9

20:05-18:51

2 stops27h 46m

£470

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sat 6/9

22:45-09:05

1 stop29h 20m

Belfast City

Sat 20/12

18:00-15:35

1 stop26h 35m

£471

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 2/10

22:20-21:40

3 stops18h 20m

Belfast Intl

Thu 9/10

09:25-15:20

3 stops34h 55m

£484

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 19/9

22:40-18:15

1 stop14h 35m

Belfast City

Sun 21/9

20:05-18:51

2 stops27h 46m

£484

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 26/9

22:40-18:15

1 stop14h 35m

Belfast City

Mon 29/9

19:30-18:51

2 stops28h 21m

£484

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Wed 1/10

17:50-22:00

3 stops23h 10m

Belfast Intl

Wed 8/10

07:25-20:50

3 stops42h 25m

£488

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 26/9

17:00-22:35

3 stops24h 35m

Belfast Intl

Mon 29/9

21:55-15:20

3 stops46h 25m

£490

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sat 15/11

19:40-16:10

2 stops15h 30m

Belfast Intl

Sat 22/11

08:10-18:30

2 stops15h 20m

£492

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Fri 19/9

20:30-22:35

3 stops21h 05m

Belfast Intl

Sun 21/9

21:00-15:20

3 stops47h 20m

£518

Flights are sorted by cheapest return flights first.

Deals found on 16/8

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 return 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.

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?

    British Airways can get you from Washington, D.C. Dulles Intl Airport to Northern Ireland in just under 10h 55m. Your travel time can differ by up to . Airlines will cover a distance of 3390 mi.

  • 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 holiday 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, January is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Northern Ireland (average of £67). Flying from Washington, D.C. Dulles Intl Airport to Northern Ireland in July is currently the most expensive (average of £90). 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

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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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Reagan-National to Edinburgh flights
Dulles Intl to Glasgow Intl flights
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Dulles Intl to Manchester flights
Reagan-National to Manchester flights
Baltimore to Manchester flights
Dulles Intl to Southampton flights
Dulles Intl to Birmingham flights
Dulles Intl to Newcastle upon Tyne flights
Dulles Intl to Leeds flights
Reagan-National to Luton flights
Baltimore to Newcastle upon Tyne flights
Dulles Intl to Liverpool flights
Baltimore to Birmingham flights
Dulles Intl to Inverness flights
Dulles Intl to Bristol flights
Baltimore to Leeds flights
Dulles Intl to Cardiff flights
Baltimore to Bristol flights
Baltimore to Cardiff flights
Dulles Intl to Aberdeen flights

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Not ready to book yet? You can track prices for flights from Dulles Intl to Northern Ireland on Cheapflights with our Price Alert feature and get notified when better prices are available.

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