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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £419

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
10 May — 17 May1
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 10 April 2026.

Wed 24/607:00
BHD
-
IAD
2 stops20h 15m
Multiple Airlines
Sun 28/623:20
IAD
-
BHD
2 stops16h 15m
Multiple Airlines
Deal found 9/4£611
Tue 23/613:45
BHD
-
IAD
1 stop11h 35m
American Airlines
Tue 11/820:19
IAD
-
BHD
2 stops16h 16m
American Airlines
Deal found 8/4£631
Wed 24/610:05
BHD
-
IAD
1 stop12h 20m
British Airways
Sun 28/620:22
IAD
-
BHD
2 stops35h 33m
British Airways
Deal found 7/4£636
Mon 6/715:20
BHD
-
IAD
1 stop31h 05m
Multiple Airlines
Mon 21/1218:20
IAD
-
BHD
1 stop11h 20m
Multiple Airlines
Deal found 6/4£645
Mon 4/519:35
BHD
-
IAD
1 stop29h 45m
Multiple Airlines
Mon 11/522:25
IAD
-
BHD
1 stop12h 05m
Multiple Airlines
Deal found 7/4£658
Thu 7/506:30
BHD
-
IAD
1 stop15h 55m
British Airways
Mon 11/522:25
IAD
-
BHD
1 stop12h 05m
British Airways
Deal found 7/4£659

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 10 April 2026.

Round-trip from

£611

One-way from

£419
24/6-28/6
  • 24/6-28/6
  • 4 total stops
  • 36h 30m total
  • Belfast to Washington, D.C.
Search Deals
29/8
  • 29/8
  • 3 total stops
  • 31h 05m 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 10 April 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

Tue 23/6

13:45-20:20

1 stop11h 35m

Washington, D.C. Dulles Intl

Tue 11/8

20:19-17:35

2 stops16h 16m

£631

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 24/6

06:30-15:50

1 stop14h 20m

Washington, D.C. Dulles Intl

Sun 28/6

20:22-12:55

2 stops35h 33m

£640

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 4/5

19:35-20:20

1 stop29h 45m

Washington, D.C. Dulles Intl

Mon 11/5

22:25-15:30

1 stop12h 05m

£658

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 7/5

06:30-17:25

1 stop15h 55m

Washington, D.C. Dulles Intl

Mon 11/5

22:25-15:30

1 stop12h 05m

£659

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 30/9

06:30-20:20

1 stop18h 50m

Washington, D.C. Dulles Intl

Sun 4/10

17:40-10:30

1 stop11h 50m

£666
Cheapest one-way

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 29/8

17:10-19:15

3 stops31h 05m

£419

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 9/5

07:00-19:20

2 stops41h 20m

£447
Fastest single journey

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 29/8

07:05-19:40

1 stop17h 35m

£648

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sat 9/5

16:15-15:45

1 stop28h 30m

£704

Flights are sorted by cheapest return flights first.

Deals found on 9/4

Sorted by cheapest first

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?

    American Airlines and British Airways can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 11h 35m. Your travel time can differ by up to 2h 45m. 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
Arlington
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 City to Reagan-National flights
Belfast Intl to Baltimore flights
Belfast Intl to Dulles Intl 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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