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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £188

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Dulles Intl to Northern Ireland

Enter your travel dates to find the best prices.

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 12 December 2025.

Sat 27/1221:45IAD - BHD
1 stop14h 00mBritish Airways
Sun 4/120:25BHD - IAD
2 stops32h 39mBritish Airways
Deal found 11/12£1,094
Sat 27/1217:05IAD - BHD
2 stops14h 45mMultiple Airlines
Sun 4/120:25BHD - IAD
2 stops32h 39mMultiple Airlines
Deal found 10/12£1,296
Sat 27/1218:05IAD - BHD
1 stop17h 45mKLM
Sun 4/117:20BHD - IAD
1 stop27h 45mKLM
Deal found 11/12£1,335

Find 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 12 December 2025.

Round-trip from

£464

One-way from

£188
British Airways
  • British Airways
  • 5/3-12/3
  • 2 total stops
  • 25h 25m total
  • Washington, D.C. to Northern Ireland
Search Deals
4/2
  • 4/2
  • 3 total stops
  • 41h 35m total
  • Washington, D.C. to Northern Ireland
Search Deals

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 12 December 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

Thu 5/3

18:20-10:20

1 stop11h 00m

Belfast City

Thu 12/3

06:35-20:55

1 stop18h 20m

£464

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 8/1

21:45-16:40

1 stop13h 55m

Belfast City

Thu 22/1

10:40-19:55

1 stop14h 15m

£466

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 8/4

19:15-13:30

1 stop13h 15m

Belfast City

Sun 12/4

11:00-17:25

1 stop11h 25m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 16/3

22:45-14:15

1 stop11h 30m

Belfast City

Sun 22/3

20:25-16:35

1 stop24h 10m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/2

21:45-14:15

1 stop11h 30m

Belfast City

Sun 15/2

09:10-15:35

1 stop11h 25m

£481

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 4/3

18:20-10:15

1 stop10h 55m

Belfast City

Sun 8/3

17:35-16:35

1 stop27h 00m

£481

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

12:23-16:50

2 stops23h 27m

Belfast City

Thu 12/3

06:30-17:05

1 stop14h 35m

£500

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Mon 26/1

17:30-20:15

2 stops21h 45m

Belfast Intl

Mon 2/2

06:00-14:35

3 stops37h 35m

£521

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Sun 25/1

19:40-18:55

2 stops18h 15m

Belfast Intl

Sun 1/2

07:10-18:30

2 stops16h 20m

£535

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 8/1

22:20-21:05

1 stop17h 45m

Belfast Intl

Thu 22/1

06:15-08:40

2 stops31h 25m

£725

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 20 results
1
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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 11h. 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.

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