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Cheap flights from Northern Ireland to Washington, D.C. Dulles Intl Airport from £673

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — IAD
11 Aug — 18 Aug1
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 12 July 2026.

Wed 30/920:35
BHD
-
IAD
2 stops27h 15m
British Airways
Sun 4/1017:45
IAD
-
BHD
1 stop11h 45m
British Airways
Deal found 10/7£673
Fri 4/906:30
BHD
-
IAD
2 stops38h 00m
British Airways
Sun 6/922:25
IAD
-
BHD
1 stop11h 10m
British Airways
Deal found 10/7£681
Thu 6/821:05
BFS
-
IAD
3 stops28h 19m
Multiple Airlines
Wed 12/817:45
IAD
-
BFS
2 stops23h 35m
Multiple Airlines
Deal found 7/7£725
Sun 23/820:20
BFS
-
IAD
2 stops29h 15m
Multiple Airlines
Sun 30/820:30
IAD
-
BFS
2 stops19h 30m
Multiple Airlines
Deal found 9/7£762

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 12 July 2026.

Round-trip from

£673
British Airways
  • British Airways
  • 30/9-4/10
  • 3 total stops
  • 39h 00m 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 12 July 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

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Fri 4/9

09:35-20:20

1 stop15h 45m

Washington, D.C. Dulles Intl

Sun 6/9

22:25-14:35

1 stop11h 10m

£682
Fastest return journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 30/9

11:35-20:20

1 stop13h 45m

Washington, D.C. Dulles Intl

Sun 4/10

22:25-14:35

1 stop11h 10m

£682

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Thu 6/8

06:40-15:45

2 stops14h 05m

Washington, D.C. Dulles Intl

Wed 12/8

17:15-19:15

2 stops21h 00m

£732

BelfastWashington, D.C.

BFS - IAD

BFSIAD

Belfast Intl

Sun 23/8

20:20-20:35

2 stops29h 15m

Washington, D.C. Dulles Intl

Sun 30/8

20:30-21:00

2 stops19h 30m

£762

Flights are sorted by cheapest return flights first.

Deals found on 10/7

Sorted by cheapest first

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 British Airways fly from Northern Ireland to Washington, D.C. Dulles Intl Airport in about 15h 45m. 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.

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
Gaithersburg
Oxon Hill
Hanover
Woodbridge
Alexandria
Sterling

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

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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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