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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £477

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 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 7 November 2025.

Round-trip from

£545

One-way from

£477
3/12-10/12
  • 3/12-10/12
  • 5 total stops
  • 47h 20m total
  • Belfast to Washington, D.C.
Search Deals
British Airways
  • British Airways
  • 12/1
  • 1 total stop
  • 11h 20m total
  • Belfast to Washington, D.C.
Search Deals

Find 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 7 November 2025.

Wed 3/1214:15BHD - IAD
3 stops30h 00mMultiple Airlines
Wed 10/1222:30IAD - BHD
2 stops17h 20mMultiple Airlines
Deal found 5/11£545
Wed 3/1206:30BHD - IAD
1 stop14h 35mVirgin Atlantic
Wed 10/1218:05IAD - BHD
1 stop21h 55mVirgin Atlantic
Deal found 5/11£699
Thu 20/1111:05BHD - IAD
1 stop13h 50mAmerican Airlines
Mon 24/1117:29IAD - BHD
2 stops15h 46mAmerican Airlines
Deal found 5/11£742
Wed 19/1106:35BHD - IAD
1 stop18h 20mBritish Airways
Sun 23/1121:45IAD - BHD
1 stop14h 05mBritish Airways
Deal found 5/11£745
Thu 20/1110:40BHD - IAD
1 stop14h 15mBritish Airways
Sun 23/1113:58IAD - BHD
2 stops15h 22mBritish Airways
Deal found 5/11£775
Wed 19/1106:30BHD - IAD
2 stops34h 01mDelta
Sun 23/1112:11IAD - BHD
2 stops27h 49mDelta
Deal found 5/11£870
Thu 20/1110:35BHD - IAD
2 stops13h 55mBritish Airways
Mon 24/1121:00IAD - BHD
2 stops14h 05mBritish Airways
Deal found 5/11£896
Fri 14/1106:45BHD - IAD
1 stop13h 50mBritish Airways
Wed 19/1118:20IAD - BHD
1 stop9h 50mBritish Airways
Deal found 5/11£962
Fri 14/1106:45BHD - IAD
1 stop13h 50mBritish Airways
Sun 23/1121:45IAD - BHD
1 stop10h 30mBritish Airways
Deal found 5/11£992

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 7 November 2025.
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

Belfast City

Fly to

Dulles Intl

Route

Depart

Return

Price

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

14:15-15:15

3 stops30h 00m

Washington, D.C. Dulles Intl

Wed 10/12

21:45-19:20

1 stop16h 35m

£642

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 10/12

17:03-16:50

2 stops18h 47m

£699

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 3/12

06:30-16:05

1 stop14h 35m

Washington, D.C. Dulles Intl

Wed 10/12

18:05-21:00

1 stop21h 55m

£699

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

06:35-15:35

1 stop14h 00m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-16:05

1 stop13h 20m

£742

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 19/11

06:35-19:55

1 stop18h 20m

Washington, D.C. Dulles Intl

Sun 23/11

13:58-10:20

2 stops15h 22m

£745

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

11:05-19:55

1 stop13h 50m

Washington, D.C. Dulles Intl

Mon 24/11

21:45-14:15

1 stop11h 30m

£745

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Thu 20/11

10:40-19:55

1 stop14h 15m

Washington, D.C. Dulles Intl

Sun 23/11

13:58-10:20

2 stops15h 22m

£775

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 19/11

06:30-11:31

2 stops34h 01m

Washington, D.C. Dulles Intl

Sun 23/11

12:11-21:00

2 stops27h 49m

£870

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 14/1

09:15-15:35

1 stop11h 20m

£477

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 12/1

09:15-15:35

1 stop11h 20m

£477

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 14 results
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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.

Cheapflights Insights

Everything you need to know about your flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport

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

Find hourly flight availability from Belfast City 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 7 November 2025.

One of the essential ways to save on airfare from Belfast City Airport to Washington, D.C. Dulles Intl Airport is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 36% on airfare.

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?

    Delta, Virgin Atlantic, and American Airlines can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 14h. Your travel time can differ by up to 35m. 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
Woodbridge
Arlington
Alexandria
College Park

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 Baltimore flights
Belfast City to Reagan-National 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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