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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £399

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 7/4. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
14 Dec — 21 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 14 November 2025.

Round-trip from

£761

One-way from

£399
British Airways
  • British Airways
  • 13/5-25/5
  • 2 total stops
  • 27h 55m total
  • Belfast to Washington, D.C.
Search Deals
7/4
  • 7/4
  • 3 total stops
  • 37h 25m 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 14 November 2025.

Thu 20/1106:35BHD - IAD
1 stop14h 00mAmerican Airlines
Mon 24/1114:16IAD - BHD
2 stops18h 59mAmerican Airlines
Deal found 12/11£960
Thu 20/1112:00BHD - IAD
2 stops12h 55mBritish Airways
Mon 24/1121:45IAD - BHD
2 stops13h 35mBritish Airways
Deal found 12/11£1,111

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 14 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 13/5

06:50-17:25

1 stop15h 35m

Washington, D.C. Dulles Intl

Mon 25/5

22:20-15:40

1 stop12h 20m

£761

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 13/5

06:50-20:20

1 stop18h 30m

Washington, D.C. Dulles Intl

Mon 25/5

17:47-12:55

2 stops14h 08m

£794

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 13/5

06:30-19:16

2 stops17h 46m

Washington, D.C. Dulles Intl

Mon 25/5

12:30-16:55

2 stops23h 25m

£802

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

13:50-20:20

1 stop11h 30m

Washington, D.C. Dulles Intl

Sun 5/4

17:40-13:05

1 stop14h 25m

£1,078

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Wed 1/4

11:05-20:20

2 stops14h 15m

Washington, D.C. Dulles Intl

Sun 5/4

17:40-11:30

1 stop12h 50m

£1,100

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 7/4

07:05-15:30

3 stops37h 25m

£399

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 1/12

08:00-14:35

3 stops35h 35m

£460

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 1/12

16:55-15:35

2 stops27h 40m

£528

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 1/12

11:30-15:35

1 stop33h 05m

£696

Flights are sorted by cheapest return flights first.

Deals found on 13/11

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 14 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?

    British Airways, American Airlines, and Delta can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 15h 35m. Your travel time can differ by up to 2h 55m. 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 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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