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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £409

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 18/5. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
30 Mar — 6 Apr1
1 adult

Find flight deals from Belfast City to Dulles Intl

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 25 March 2025.

Wed 26/307:00BHD - IAD
2 stops17h 45mAer Lingus
Fri 28/321:45IAD - BHD
2 stops19h 05mAer Lingus
Deal found 25/3£5,019
Wed 26/317:20BHD - IAD
1 stop27h 25mMultiple Airlines
Fri 28/319:40IAD - BHD
2 stops17h 10mMultiple Airlines
Deal found 25/3£5,783

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 25 March 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

Sun 18/5

07:05-10:16

3 stops32h 11m

£409

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Sun 18/5

15:50-20:05

1 stop33h 15m

£679

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 22/7

09:35-17:35

1 stop13h 00m

£1,075

Flights are sorted by cheapest return flights first.

Deals found on 24/3

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 25 March 2025.

When flying from Belfast City Airport to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated 25 March 2025.
Finnair
7.6
Good
1,266 reviews
Check prices

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

Boarding

7.6

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2023

LHR - EWR

Waited about 90 minutes in passport control in Newark because there were only 2 gates open for much of the time with several hundred people in the line.
Finnair
7.6
Good
1,266 reviews
Finnair
7.6
Good
1,266 reviews
Check prices

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

Boarding

7.6

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2023

LHR - EWR

Waited about 90 minutes in passport control in Newark because there were only 2 gates open for much of the time with several hundred people in the line.
British Airways
6.6
Okay
6,712 reviews
Finnair
7.6
Good
1,266 reviews
Check prices

Entertainment

6.9

Crew

8.1

Food

6.7

Comfort

7.4

Boarding

7.6

Overall

7.6

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2023

LHR - EWR

Waited about 90 minutes in passport control in Newark because there were only 2 gates open for much of the time with several hundred people in the line.

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.

  • 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.

  • What is the cheapest month to book a flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport (average of £599). Flying from Belfast City Airport to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Belfast City Airport?

Book flights to Belfast City Airport if you plan to visit one of these locations
Silver Spring
Arlington
Woodbridge
College Park
Laurel
Tysons

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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.
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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.

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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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