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Cheap flights from Northern Ireland to Washington, D.C. Dulles Intl Airport from £335

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 12/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Dulles Intl
Explore the most affordable flight options available from Northern Ireland to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 June 2026.

Wed 2/906:30
BHD
-
IAD
1 stop14h 25m
British Airways
Tue 8/921:30
IAD
-
BHD
1 stop12h 50m
British Airways
Deal found 21/6£554
Tue 27/1008:45
BHD
-
IAD
1 stop11h 50m
British Airways
Fri 30/1022:45
IAD
-
BHD
1 stop11h 30m
British Airways
Deal found 20/6£567
Wed 2/909:50
BHD
-
IAD
2 stops19h 44m
Virgin Atlantic
Tue 8/917:40
IAD
-
BHD
1 stop10h 40m
Virgin Atlantic
Deal found 21/6£593
Sat 5/907:05
BHD
-
IAD
1 stop17h 35m
British Airways
Tue 8/922:25
IAD
-
BHD
1 stop11h 55m
British Airways
Deal found 19/6£595
Wed 2/905:55
BFS
-
IAD
3 stops38h 15m
Multiple Airlines
Tue 8/923:20
IAD
-
BFS
2 stops16h 45m
Multiple Airlines
Deal found 21/6£612
Fri 17/716:25
BFS
-
IAD
2 stops27h 45m
Multiple Airlines
Thu 23/720:30
IAD
-
BFS
2 stops20h 10m
Multiple Airlines
Deal found 17/6£891
Mon 27/720:35
BFS
-
IAD
3 stops29h 51m
Multiple Airlines
Fri 31/717:15
IAD
-
BFS
2 stops18h 15m
Multiple Airlines
Deal found 19/6£906
Fri 17/706:30
BFS
-
IAD
2 stops17h 30m
Multiple Airlines
Fri 24/718:15
IAD
-
BFS
2 stops22h 00m
Multiple Airlines
Deal found 17/6£999
Fri 26/607:20
BFS
-
IAD
3 stops18h 53m
Multiple Airlines
Thu 2/708:18
IAD
-
BFS
3 stops20h 22m
Multiple Airlines
Deal found 21/6£1,132

Find flight deals from Northern Ireland to Dulles Intl

Keep the following information in mind while searching for Northern Ireland to Dulles Intl flight deals. Data was last updated 21 June 2026.

Round-trip from

£554

One-way from

£335
British Airways
  • British Airways
  • 2/9-8/9
  • 2 total stops
  • 27h 15m total
  • Northern Ireland to Washington, D.C.
Search Deals
14/8
  • 14/8
  • 3 total stops
  • 54h 50m total
  • Northern Ireland to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Dulles Intl 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 21 June 2026.
Use the filters below to find and compare flights from Northern Ireland to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

09:50-00:34

2 stops19h 44m

Washington, D.C. Dulles Intl

Tue 8/9

17:40-09:20

1 stop10h 40m

£593

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 5/9

07:05-19:40

1 stop17h 35m

Washington, D.C. Dulles Intl

Tue 8/9

17:34-18:55

2 stops20h 21m

£595

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 2/9

05:55-15:10

3 stops38h 15m

Washington, D.C. Dulles Intl

Tue 8/9

23:20-21:05

2 stops16h 45m

£612

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 27/10

08:45-20:30

2 stops15h 45m

Washington, D.C. Dulles Intl

Fri 30/10

22:00-17:15

2 stops15h 15m

£620

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 7/10

19:40-18:50

2 stops28h 10m

Washington, D.C. Dulles Intl

Sun 11/10

19:15-10:30

1 stop10h 15m

£631

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 17/7

16:25-15:10

2 stops27h 45m

Washington, D.C. Dulles Intl

Thu 23/7

20:30-21:40

2 stops20h 10m

£891

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 27/7

20:35-21:26

3 stops29h 51m

Washington, D.C. Dulles Intl

Fri 31/7

17:15-16:30

2 stops18h 15m

£906

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Fri 17/7

06:30-19:00

2 stops17h 30m

Washington, D.C. Dulles Intl

Fri 24/7

18:15-21:15

2 stops22h 00m

£999
Cheapest one-way

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 12/8

16:45-15:10

3 stops51h 25m

£335

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Wed 12/8

21:00-15:10

3 stops47h 10m

£337

Flights are sorted by cheapest return flights first.

Deals found on 16/6

Showing 1-10 of 25 resultsSorted by cheapest first
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Best time to book a flight from Northern Ireland to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Northern Ireland 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 Northern Ireland to Washington, D.C. Dulles Intl Airport
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 Northern Ireland to Dulles Intl. 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 Northern Ireland to Washington, D.C. Dulles Intl Airport?

    Airlines like Virgin Atlantic and British Airways fly from Northern Ireland to Washington, D.C. Dulles Intl Airport in about 17h 35m. The time it takes to get you to your destination can typically vary by up to 2h 09m. The distance from Northern Ireland to Washington, D.C. Dulles Intl Airport is about 3390 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Northern Ireland to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Northern Ireland to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Northern Ireland to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Northern Ireland to Dulles Intl.

  • Can I find deals for business class flights from Northern Ireland to Dulles Intl?

    Yes. Cheapflights offers flight deals from Northern Ireland to Dulles Intl 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

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Gaithersburg
Woodbridge
Alexandria
Sterling

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Northern Ireland to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Heathrow to Baltimore flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Stansted to Dulles Intl flights
Gatwick to Reagan-National flights
Gatwick to Baltimore flights
Luton to Dulles Intl flights
Manchester to Dulles Intl flights
Manchester to Baltimore flights
Birmingham to Dulles Intl flights
Manchester to Reagan-National flights
Edinburgh to Dulles Intl flights
Birmingham to Reagan-National flights
Birmingham to Baltimore flights
London City to Baltimore flights
Edinburgh to Baltimore flights
Newcastle upon Tyne to Dulles Intl flights
Luton to Baltimore flights
Newcastle upon Tyne to Baltimore flights
Edinburgh to Reagan-National flights
Newcastle upon Tyne to Reagan-National flights
Stansted to Baltimore flights
London City to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Glasgow Intl to Baltimore flights
Glasgow Intl to Reagan-National flights
Leeds to Dulles Intl flights
Bristol to Dulles Intl flights
Liverpool to Baltimore flights
Leeds to Baltimore flights
Bristol to Baltimore flights
Belfast Intl to Dulles Intl flights
Southampton to Dulles Intl flights
Belfast City to Baltimore flights
Southend to Dulles Intl flights
Southampton to Baltimore flights
Belfast Intl to Baltimore flights
Aberdeen to Dulles Intl flights
Leeds to Reagan-National flights
Newquay to Baltimore flights
Exeter to Dulles Intl flights
Bristol to Reagan-National flights
Norwich to Baltimore flights
Norwich to Reagan-National flights
Inverness to Reagan-National flights
Inverness to Dulles Intl flights
Aberdeen to Baltimore flights

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

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Can Cheapflights find flights from Northern Ireland to Dulles Intl with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Northern Ireland to Dulles Intl flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Northern Ireland to Dulles Intl become cheaper?

Yes, Cheapflights offers price alerts on Northern Ireland to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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