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Cheap flights from Belfast City Airport 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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
26 Jun — 3 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Belfast City to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Belfast City to Dulles Intl
Explore the most affordable flight options available from Belfast City to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 May 2026.

Mon 14/909:40
BHD
-
IAD
1 stop12h 45m
British Airways
Mon 21/922:25
IAD
-
BHD
1 stop12h 05m
British Airways
Deal found 21/5£747
Mon 14/909:40
BHD
-
IAD
1 stop12h 45m
Multiple Airlines
Mon 21/920:15
IAD
-
BHD
2 stops14h 15m
Multiple Airlines
Deal found 21/5£755
Wed 2/910:05
BHD
-
IAD
1 stop14h 35m
British Airways
Sun 6/918:24
IAD
-
BHD
2 stops19h 21m
British Airways
Deal found 22/5£812
Tue 23/606:30
BHD
-
IAD
1 stop16h 00m
American Airlines
Tue 11/822:25
IAD
-
BHD
1 stop11h 55m
American Airlines
Deal found 22/5£890
Tue 23/606:30
BHD
-
IAD
2 stops14h 15m
Multiple Airlines
Tue 11/817:45
IAD
-
BHD
1 stop10h 15m
Multiple Airlines
Deal found 22/5£1,000

Find flight deals from Belfast City to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Belfast City (BHD) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 27 May 2026.

Round-trip from

£812

One-way from

£335
British Airways
  • British Airways
  • 2/9-6/9
  • 3 total stops
  • 33h 56m total
  • Belfast to Washington, D.C.
Search Deals
31/8
  • 31/8
  • 2 total stops
  • 34h 53m total
  • Belfast to Washington, D.C.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast City 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 27 May 2026.
Use the filters below to find and compare flights from Belfast City Airport 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

Mon 14/9

09:40-17:25

1 stop12h 45m

Washington, D.C. Dulles Intl

Mon 21/9

22:25-15:30

1 stop12h 05m

£747

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 2/9

10:05-19:40

1 stop14h 35m

Washington, D.C. Dulles Intl

Sun 6/9

18:24-18:45

2 stops19h 21m

£812

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 14/9

09:50-22:59

2 stops18h 09m

Washington, D.C. Dulles Intl

Mon 21/9

13:00-09:20

2 stops15h 20m

£816

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 23/6

06:30-17:30

1 stop16h 00m

Washington, D.C. Dulles Intl

Tue 11/8

22:25-15:20

1 stop11h 55m

£890
Cheapest one-way

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 24/8

18:30-12:53

3 stops47h 23m

£362

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 31/8

08:50-15:10

3 stops35h 20m

£371

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 20/6

17:10-15:16

3 stops51h 06m

£385

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 17/8

09:50-19:35

3 stops38h 45m

£409

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 18/10

14:25-15:30

2 stops30h 05m

£440

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 13/7

16:10-19:00

3 stops31h 50m

£460

Flights are sorted by cheapest return flights first.

Deals found on 23/5

Showing 1-10 of 15 resultsSorted by cheapest first
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Best time to book a flight from Belfast City to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Belfast City 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.

Related info for your journey

Find useful and relevant information for your journey from Belfast City 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 Belfast City Airport to Washington, D.C. Dulles Intl Airport?

    British Airways and Virgin Atlantic can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 12h 45m. Your travel time can differ by up to 5h 24m. Airlines will cover a distance of 3390 mi. This flight may include one or multiple stops.

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

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

  • How can I find direct flights from Belfast City to Dulles Intl?

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

  • Can I find deals for business class flights from Belfast City to Dulles Intl?

    Yes. Cheapflights offers flight deals from Belfast City 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 Belfast City to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Belfast Intl to Baltimore flights
Belfast City to Reagan-National flights
Belfast City to Baltimore flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Belfast City to Dulles Intl?

Deals for Belfast City to Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Belfast City to Dulles Intl?

Millions of users choose and trust Cheapflights to book the best flight deals from Belfast City 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 Belfast City to Dulles Intl with no change fees?

Yes, we can. To see specific flights from Belfast City to Dulles Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Belfast City to Dulles Intl become cheaper?

Not ready to book yet? You can track prices for flights from Belfast City to Dulles Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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