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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £223

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
13 Nov — 20 Nov1
1 adult
1 adult, Economy

Find 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 14 October 2025.

Thu 27/1119:40IAD - BFS
2 stops21h 40mMultiple Airlines
Thu 4/1206:30BFS - IAD
2 stops17h 00mMultiple Airlines
Deal found 13/10£447
Wed 12/1118:05IAD - BHD
1 stop21h 55mDelta
Sun 16/1106:30BHD - IAD
1 stop14h 35mDelta
Deal found 13/10£491
Thu 27/1119:40IAD - BHD
2 stops20h 10mMultiple Airlines
Thu 4/1207:00BHD - IAD
2 stops16h 30mMultiple Airlines
Deal found 13/10£492
Wed 26/1119:40IAD - BFS
2 stops15h 30mMultiple Airlines
Wed 3/1207:55BFS - IAD
2 stops15h 35mMultiple Airlines
Deal found 12/10£514
Wed 26/1118:05IAD - BHD
1 stop17h 45mMultiple Airlines
Sun 30/1117:20BHD - IAD
1 stop27h 45mMultiple Airlines
Deal found 12/10£604
Wed 26/1119:21IAD - BHD
2 stops16h 29mKLM
Sun 30/1117:20BHD - IAD
1 stop27h 45mKLM
Deal found 12/10£608
Fri 26/1218:05IAD - BHD
1 stop21h 55mKLM
Tue 6/117:20BHD - IAD
2 stops30h 22mKLM
Deal found 12/10£642
Wed 26/1116:30IAD - BHD
3 stops19h 55mMultiple Airlines
Wed 3/1207:25BHD - IAD
3 stops36h 50mMultiple Airlines
Deal found 11/10£650
Mon 20/1022:20IAD - BHD
2 stops17h 30mMultiple Airlines
Sun 26/1018:00BHD - IAD
2 stops31h 05mMultiple Airlines
Deal found 13/10£657
Sat 18/1013:30IAD - BFS
2 stops27h 35mMultiple Airlines
Thu 23/1006:00BFS - IAD
2 stops34h 45mMultiple Airlines
Deal found 13/10£768

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 14 October 2025.

Round-trip from

£447

One-way from

£223

Popular in

June

Cheapest in

February
27/11-4/12
  • 27/11-4/12
  • 4 total stops
  • 38h 40m total
  • Washington, D.C. to Northern Ireland
Search Deals
15/11
  • 15/11
  • 3 total stops
  • 34h 40m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£102 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
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 14 October 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 - BFS

IADBFS

Washington, D.C. Dulles Intl

Thu 27/11

19:40-22:20

2 stops21h 40m

Belfast Intl

Thu 4/12

06:30-18:30

2 stops17h 00m

£447

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

21:45-16:40

1 stop13h 55m

Belfast City

Wed 11/3

12:25-20:55

1 stop12h 30m

£479

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

09:05-16:35

1 stop11h 30m

£479

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 3/4

17:50-08:50

1 stop10h 00m

Belfast City

Wed 8/4

10:00-20:10

1 stop15h 10m

£490

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-21:00

1 stop21h 55m

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

18:05-21:00

1 stop21h 55m

Belfast City

Sun 16/11

06:30-16:05

1 stop14h 35m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 12/11

18:05-21:00

1 stop21h 55m

Belfast City

Sun 16/11

06:30-16:05

1 stop14h 35m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 27/11

18:05-16:50

1 stop17h 45m

Belfast City

Thu 4/12

06:30-16:05

1 stop14h 35m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 26/11

18:05-16:50

1 stop17h 45m

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

£491

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 27/11

15:35-21:00

2 stops24h 25m

Belfast City

Thu 4/12

06:30-16:05

1 stop14h 35m

£495

Flights are sorted by cheapest return flights first.

Deals found on 13/10

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 13h 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.

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

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