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Cheap flights from Washington, D.C. Dulles Intl Airport to Northern Ireland from £416

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/1. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — BFS
2 Jan — 9 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 3 December 2025.

Mon 1/1218:05IAD - BHD
1 stop21h 55mVirgin Atlantic
Mon 8/1206:30BHD - IAD
1 stop14h 35mVirgin Atlantic
Deal found 30/11£495
Mon 1/1217:59IAD - BHD
2 stops22h 01mDelta
Mon 8/1206:30BHD - IAD
1 stop14h 35mDelta
Deal found 30/11£498
Tue 30/1221:45IAD - BHD
1 stop14h 00mBritish Airways
Sun 4/120:25BHD - IAD
1 stop24h 10mBritish Airways
Deal found 30/11£876
Mon 1/1217:30IAD - BHD
2 stops22h 20mMultiple Airlines
Mon 8/1215:25BHD - IAD
3 stops32h 55mMultiple Airlines
Deal found 30/11£949
Mon 29/1217:05IAD - BHD
2 stops14h 45mMultiple Airlines
Sun 4/110:40BHD - IAD
1 stop33h 55mMultiple Airlines
Deal found 30/11£1,082
Sat 27/1221:45IAD - BHD
1 stop14h 00mBritish Airways
Sun 4/117:35BHD - IAD
1 stop27h 00mBritish Airways
Deal found 2/12£1,112
Sat 27/1217:05IAD - BHD
2 stops16h 00mAer Lingus
Sun 4/120:25BHD - IAD
2 stops48h 10mAer Lingus
Deal found 2/12£1,129
Sat 27/1217:05IAD - BHD
2 stops16h 00mMultiple Airlines
Sun 4/115:10BHD - IAD
1 stop29h 25mMultiple Airlines
Deal found 2/12£1,134
Wed 17/1217:05IAD - BFS
2 stops13h 15mMultiple Airlines
Thu 18/1214:45BFS - IAD
2 stops29h 50mMultiple Airlines
Deal found 3/12£1,313
Sat 27/1217:05IAD - BFS
2 stops24h 05mMultiple Airlines
Sun 4/123:05BFS - IAD
2 stops21h 30mMultiple Airlines
Deal found 2/12£1,365
Sat 20/1221:00IAD - BFS
2 stops16h 50mMultiple Airlines
Sun 4/123:05BFS - IAD
2 stops21h 30mMultiple Airlines
Deal found 1/12£1,769

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 3 December 2025.

Round-trip from

£416

Popular in

June

Cheapest in

February

Average price

£523
British Airways
  • British Airways
  • 21/1-28/1
  • 2 total stops
  • 25h 10m total
  • Washington, D.C. to Northern Ireland
Search Deals
Highest demand for flights based on searches. 19% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£26 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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 3 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

Tue 3/3

21:45-14:50

1 stop12h 05m

Belfast City

Wed 11/3

09:15-16:35

1 stop11h 20m

£433

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Tue 3/3

18:20-10:30

1 stop11h 10m

Belfast City

Tue 10/3

10:00-20:55

1 stop14h 55m

£433

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 2/3

18:20-10:40

1 stop11h 20m

Belfast City

Wed 11/3

09:15-16:35

1 stop11h 20m

£433

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 4/3

21:45-14:15

1 stop11h 30m

Belfast City

Mon 9/3

19:25-16:35

1 stop25h 10m

£433

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 4/3

21:45-14:15

1 stop11h 30m

Belfast City

Wed 11/3

11:25-20:55

1 stop13h 30m

£433

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Sun 1/3

18:20-10:20

1 stop11h 00m

Belfast City

Sun 8/3

06:30-15:35

1 stop14h 05m

£442

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Thu 5/3

21:45-16:40

1 stop13h 55m

Belfast City

Thu 12/3

10:40-20:55

1 stop14h 15m

£445

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Wed 11/2

18:20-10:15

1 stop10h 55m

Belfast City

Sun 15/2

06:30-15:35

1 stop14h 05m

£460

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Mon 2/3

18:20-10:40

1 stop11h 20m

Belfast City

Sun 8/3

10:40-20:55

1 stop14h 15m

£460

Washington, D.C.Belfast

IAD - BHD

IADBHD

Washington, D.C. Dulles Intl

Fri 27/2

18:20-10:30

1 stop11h 10m

Belfast City

Tue 10/3

08:45-16:35

1 stop11h 50m

£460

Flights are sorted by cheapest return flights first.

Deals found on 30/11

Showing 1-10 of 16 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 12h 05m. 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 Luton flights
Baltimore to Luton flights
Dulles Intl to Edinburgh flights
Reagan-National to Luton flights
Dulles Intl to Glasgow Intl flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Baltimore to Stansted flights
Baltimore to Glasgow Intl flights
Dulles Intl to Manchester flights
Baltimore to Manchester flights
Reagan-National to Stansted flights
Reagan-National to Manchester flights
Baltimore to London City flights
Dulles Intl to Newcastle upon Tyne flights
Dulles Intl to Southampton flights
Dulles Intl to Inverness flights
Dulles Intl to Leeds flights
Baltimore to Newcastle upon Tyne flights
Baltimore to Southampton flights
Dulles Intl to Birmingham flights
Dulles Intl to Liverpool flights
Dulles Intl to Bristol flights
Baltimore to Leeds flights
Baltimore to Cardiff flights
Baltimore to Birmingham flights
Dulles Intl to Cardiff flights

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