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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £331

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — IAD
21 Apr — 28 Apr1
1 adult

Find flight deals from Belfast City to Dulles Intl

One-way flights from Belfast City to Dulles Intl
Search for one-way flight options from Belfast City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 16 April 2025.

Tue 24/606:55BHD - IAD
2 stops37h 11mMultiple Airlines
Deal found 15/4£331
Mon 30/618:00BHD - IAD
2 stops30h 30mAer Lingus
Deal found 15/4£630
Tue 24/606:35BHD - IAD
1 stop18h 35mIberia
Deal found 15/4£731
Tue 24/606:35BHD - IAD
1 stop14h 15mBritish Airways
Deal found 15/4£733

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 16 April 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

Tue 24/6

06:55-15:06

2 stops37h 11m

£331

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Mon 30/6

18:00-19:30

2 stops30h 30m

£630

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 24/6

06:35-20:10

1 stop18h 35m

£731

BelfastWashington, D.C.

BHD - IAD

BHDIAD

Belfast City

Tue 24/6

06:35-15:50

1 stop14h 15m

£733

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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 16 April 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 16 April 2025.
Aer Lingus
7.0
Good
1,063 reviews
Check prices

Boarding

7.2

Comfort

7.0

Entertainment

6.7

Overall

7.0

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

BOS - DUB

Once on board the crew disappeared. Not a single coffee or tea offered during the entire flight. Food, with cup of water was almost inedible
Aer Lingus
7.0
Good
1,063 reviews
Aer Lingus
7.0
Good
1,063 reviews
Check prices

Boarding

7.2

Comfort

7.0

Entertainment

6.7

Overall

7.0

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

BOS - DUB

Once on board the crew disappeared. Not a single coffee or tea offered during the entire flight. Food, with cup of water was almost inedible
Iberia
7.0
Good
2,673 reviews
Aer Lingus
7.0
Good
1,063 reviews
Check prices

Boarding

7.2

Comfort

7.0

Entertainment

6.7

Overall

7.0

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

BOS - DUB

Once on board the crew disappeared. Not a single coffee or tea offered during the entire flight. Food, with cup of water was almost inedible
British Airways
6.6
Okay
6,765 reviews
Aer Lingus
7.0
Good
1,063 reviews
Check prices

Boarding

7.2

Comfort

7.0

Entertainment

6.7

Overall

7.0

Crew

7.9

Food

6.4

Reviews

1 / 20
4.0
Okay

Anonymous,Mar 2025

BOS - DUB

Once on board the crew disappeared. Not a single coffee or tea offered during the entire flight. Food, with cup of water was almost inedible

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.

  • What are the cheapest airlines to fly from Belfast City Airport to Washington, D.C. Dulles Intl Airport one-way?

    £630 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Iberia and British Airways, with prices starting from £731 and £733, respectively.

  • 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.
Belfast Intl to Baltimore flights
Belfast Intl to Dulles Intl flights
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Belfast City to Reagan-National flights

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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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