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Cheap flights from Northern Ireland to Washington, D.C. Dulles Intl Airport from £285

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 22/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
31 Aug — 7 Sep1
1 adult

Cheap 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 26 August 2025.

Round-trip from

£466

One-way from

£285
7/10-14/10
  • 7/10-14/10
  • 6 total stops
  • 60h 25m total
  • Northern Ireland to Washington, D.C.
Search Deals
22/9
  • 22/9
  • 3 total stops
  • 47h 20m total
  • Northern Ireland to Washington, D.C.
Search Deals

Find flight deals from Northern Ireland to Dulles Intl

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 26 August 2025.

Tue 7/1007:25BFS - IAD
3 stops36h 55mMultiple Airlines
Tue 14/1017:00IAD - BFS
3 stops23h 30mMultiple Airlines
Deal found 23/8£466
Thu 20/1111:05BHD - IAD
1 stop13h 50mAmerican Airlines
Mon 24/1116:34IAD - BHD
2 stops18h 31mAmerican Airlines
Deal found 22/8£565
Tue 14/1006:30BHD - IAD
2 stops17h 48mVirgin Atlantic
Mon 20/1017:25IAD - BHD
1 stop18h 30mVirgin Atlantic
Deal found 23/8£3,661
Tue 14/1009:35BHD - IAD
1 stop15h 40mAer Lingus
Mon 20/1022:45IAD - BHD
1 stop11h 55mAer Lingus
Deal found 23/8£3,707
Wed 15/1020:15BHD - IAD
1 stop24h 40mFinnair
Tue 21/1017:50IAD - BHD
1 stop11h 45mFinnair
Deal found 23/8£3,813
Sat 11/1010:15BHD - IAD
2 stops16h 55mMultiple Airlines
Sun 19/1022:45IAD - BHD
1 stop10h 55mMultiple Airlines
Deal found 23/8£4,131
Fri 17/1006:45BHD - IAD
2 stops17h 35mMultiple Airlines
Sun 19/1022:45IAD - BHD
1 stop10h 55mMultiple Airlines
Deal found 23/8£4,133
Sat 11/1010:15BHD - IAD
2 stops16h 55mMultiple Airlines
Sat 18/1022:50IAD - BHD
1 stop11h 15mMultiple Airlines
Deal found 23/8£4,159
Fri 17/1006:45BHD - IAD
2 stops17h 35mMultiple Airlines
Sat 18/1022:50IAD - BHD
1 stop11h 15mMultiple Airlines
Deal found 23/8£4,160
Thu 16/1018:50BHD - IAD
2 stops29h 30mMultiple Airlines
Sun 19/1022:45IAD - BHD
1 stop10h 55mMultiple Airlines
Deal found 23/8£4,242
Thu 16/1018:50BHD - IAD
2 stops29h 30mMultiple Airlines
Sat 18/1022:50IAD - BHD
1 stop11h 15mMultiple Airlines
Deal found 23/8£4,269

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 26 August 2025.
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

Northern Ireland

Fly to

Dulles Intl

Route

Depart

Return

Price

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Tue 7/10

07:25-15:20

3 stops36h 55m

Washington, D.C. Dulles Intl

Tue 14/10

17:00-21:30

3 stops23h 30m

£466

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

15:05-15:35

1 stop29h 30m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-14:15

1 stop11h 30m

£565

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

06:30-19:18

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 20/10

17:25-16:55

1 stop18h 30m

£3,661

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

06:30-19:18

2 stops17h 48m

Washington, D.C. Dulles Intl

Mon 20/10

17:10-16:55

2 stops18h 45m

£3,661

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 14/10

09:35-20:15

1 stop15h 40m

Washington, D.C. Dulles Intl

Mon 20/10

22:45-15:40

1 stop11h 55m

£3,707

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 15/10

20:15-15:55

1 stop24h 40m

Washington, D.C. Dulles Intl

Tue 21/10

17:50-10:35

1 stop11h 45m

£3,813

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Mon 22/9

21:00-15:20

3 stops47h 20m

£285

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 21/9

23:30-15:20

3 stops44h 50m

£287

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 21/9

07:05-18:24

2 stops40h 19m

£322

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sat 20/9

19:35-15:20

3 stops48h 45m

£335

Flights are sorted by cheapest return flights first.

Deals found on 23/8

Showing 1-10 of 14 results
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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

What is the cheapest time of day to fly from NIR to IAD?

Find hourly flight availability from Northern Ireland to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 26 August 2025.

When flying from Northern Ireland to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 American Airlines fly from Northern Ireland to Washington, D.C. Dulles Intl Airport in about 29h 30m. The time it takes to get you to your destination can typically vary by up to . The distance from Northern Ireland to Washington, D.C. Dulles Intl Airport is about 3390 mi.

  • 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.

  • What is the cheapest month to book a flight from Northern Ireland to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Northern Ireland to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Northern Ireland to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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
Woodbridge
Arlington
College Park
Laurel
Tysons

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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
Gatwick to Dulles Intl flights
London City to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to Baltimore flights
Gatwick to Reagan-National flights
Stansted to Dulles Intl flights
Luton to Dulles Intl flights
London City to Baltimore flights
Stansted to Baltimore flights
London City to Reagan-National flights
Luton to Baltimore flights
Edinburgh to Dulles Intl flights
Manchester to Dulles Intl flights
Manchester to Baltimore flights
Manchester to Reagan-National flights
Edinburgh to Baltimore flights
Edinburgh to Reagan-National flights
Glasgow Intl to Dulles Intl flights
Birmingham to Dulles Intl flights
Glasgow Intl to Baltimore flights
Glasgow Intl to Reagan-National flights
Birmingham to Baltimore flights
Birmingham to Reagan-National flights
Bristol to Dulles Intl flights
Bristol to Baltimore flights
Bristol to Reagan-National flights
Leeds to Dulles Intl flights
Cardiff to Baltimore flights
Newcastle upon Tyne to Dulles Intl flights
Cardiff to Reagan-National flights
Cardiff to Dulles Intl flights
Newcastle upon Tyne to Baltimore flights
Newcastle upon Tyne to Reagan-National flights
Southend to Dulles Intl flights
Belfast Intl to Dulles Intl flights
Southampton to Dulles Intl flights
Belfast City to Dulles Intl flights
Leeds to Reagan-National flights
Belfast City to Reagan-National flights
Grimsby to Dulles Intl flights
Southampton to Reagan-National flights
Southampton to Baltimore flights
Inverness to Reagan-National flights
Liverpool to Baltimore flights
Inverness to Baltimore flights
Grimsby to Reagan-National flights
Grimsby to Baltimore flights
Exeter to Dulles Intl flights

Top airline flying from Northern Ireland to Dulles Intl

Discover the top airline that operate flights from Northern Ireland to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 26 August 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£608Average£721FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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

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Why should you use Cheapflights to find cheap flight tickets from Northern Ireland to Dulles Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Northern Ireland to Dulles Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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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