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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £432

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/3. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
27 2월 — 6 3월1
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 28 1월 2026.

수 11/320:40
IAD
-
BFS
2 stops15h 30m
Multiple Airlines
수 18/307:55
BFS
-
IAD
2 stops15h 35m
Multiple Airlines
Deal found 26/1£432
수 4/318:20
IAD
-
BHD
1 stop9h 50m
British Airways
일 8/312:10
BHD
-
IAD
1 stop12h 45m
British Airways
Deal found 25/1£471
목 5/321:45
IAD
-
BHD
1 stop16h 05m
British Airways
목 12/309:05
BHD
-
IAD
1 stop11h 30m
British Airways
Deal found 26/1£473
화 25/821:30
IAD
-
BHD
1 stop13h 55m
British Airways
월 31/811:35
BHD
-
IAD
1 stop13h 45m
British Airways
Deal found 26/1£478
화 25/817:40
IAD
-
BHD
1 stop12h 05m
British Airways
화 1/913:45
BHD
-
IAD
1 stop10h 55m
British Airways
Deal found 27/1£481
화 27/118:05
IAD
-
BHD
1 stop17h 45m
KLM
일 1/217:20
BHD
-
IAD
1 stop27h 45m
KLM
Deal found 26/1£486
월 26/117:26
IAD
-
BHD
2 stops18h 24m
KLM
일 1/217:20
BHD
-
IAD
1 stop27h 45m
KLM
Deal found 26/1£489
목 2/419:15
IAD
-
BHD
1 stop20h 20m
British Airways
화 7/420:25
BHD
-
IAD
1 stop26h 00m
British Airways
Deal found 27/1£491
월 26/117:26
IAD
-
BHD
2 stops18h 24m
Delta
일 1/217:20
BHD
-
IAD
2 stops28h 26m
Delta
Deal found 26/1£497
화 25/817:40
IAD
-
BHD
1 stop18h 15m
Delta
수 2/909:50
BHD
-
IAD
2 stops18h 39m
Delta
Deal found 26/1£504
화 25/819:59
IAD
-
BHD
2 stops15h 56m
Multiple Airlines
화 1/917:30
BHD
-
IAD
1 stop27h 05m
Multiple Airlines
Deal found 26/1£529
화 25/819:59
IAD
-
BHD
2 stops15h 56m
Multiple Airlines
수 2/909:50
BHD
-
IAD
2 stops18h 39m
Multiple Airlines
Deal found 26/1£536

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 28 1월 2026.

Round-trip from

£398
11/3-18/3
  • 11/3-18/3
  • 4 total stops
  • 38h 40m 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 28 1월 2026.
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 - BFS

IADBFS

Washington, D.C. Dulles Intl

수 11/3

20:40-16:10

2 stops15h 30m

Belfast Intl

수 18/3

07:55-19:30

2 stops15h 35m

£432

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

수 4/3

18:20-09:10

1 stop9h 50m

Belfast City

일 8/3

12:10-20:55

1 stop12h 45m

£471

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

토 9/5

19:15-12:25

1 stop12h 10m

Belfast City

일 17/5

06:30-17:25

1 stop15h 55m

£478

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

토 2/5

17:40-10:05

1 stop11h 25m

Belfast City

토 9/5

07:05-17:25

1 stop15h 20m

£481

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

목 2/4

19:15-20:35

1 stop20h 20m

Belfast City

화 7/4

20:25-17:25

1 stop26h 00m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

월 16/3

22:45-14:15

1 stop11h 30m

Belfast City

일 22/3

20:25-16:35

1 stop24h 10m

£562

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

목 2/4

17:40-09:20

1 stop10h 40m

Belfast City

화 7/4

09:50-20:46

2 stops15h 56m

£584

Washington, D.C.Belfast

IAD - BFS

IADBFS

Washington, D.C. Dulles Intl

목 12/3

14:30-22:35

2 stops28h 05m

Belfast Intl

목 19/3

14:00-12:45

2 stops26h 45m

£595

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

목 5/3

21:45-20:30

1 stop17h 45m

Belfast City

목 12/3

06:35-20:30

2 stops17h 55m

£605

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

토 9/5

15:26-10:05

2 stops13h 39m

Belfast City

일 17/5

11:00-23:59

2 stops17h 59m

£613

Flights are sorted by cheapest return flights first.

Deals found on 26/1

Showing 1-10 of 12 results
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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 9h 50m. 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.
Dulles Intl to Heathrow flights
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Dulles Intl to London City flights
Baltimore to Gatwick flights
Reagan-National to Gatwick flights
Dulles Intl to Edinburgh flights
Dulles Intl to Luton flights
Dulles Intl to Glasgow Intl flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Baltimore to Luton flights
Baltimore to Glasgow Intl flights
Reagan-National to Luton flights
Dulles Intl to Manchester flights
Baltimore to Stansted flights
Baltimore to London City flights
Baltimore to Manchester flights
Reagan-National to Manchester flights
Reagan-National to Stansted flights
Dulles Intl to Southampton flights
Dulles Intl to Birmingham flights
Dulles Intl to Leeds flights
Dulles Intl to Newcastle upon Tyne flights
Dulles Intl to Inverness flights
Baltimore to Newcastle upon Tyne flights
Baltimore to Southampton flights
Baltimore to Birmingham flights
Baltimore to Leeds flights
Dulles Intl to Liverpool flights
Baltimore to Bristol flights
Dulles Intl to Bristol flights
Dulles Intl to Aberdeen flights

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How does Cheapflights help users find flights from Dulles Intl to Northern Ireland?

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