How long is the flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport?

KLM and Delta can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 11h 15m. Your travel time can differ by up to 5h 31m. Airlines will cover a distance of 3390 mi. This flight may include one or multiple stops.

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.

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).

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

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.

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.

£374+ Cheap Flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Belfast City to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest

Best

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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 12 October 2026.

Thu 29/1007:15 -

2 stops16h 15m

Tue 3/1119:40 -

2 stops19h 50m

Deal found 8/10£533

Thu 5/1107:00 -

2 stops16h 30m

Thu 12/1119:40 -

2 stops16h 40m

Deal found 8/10£633

Thu 29/1009:40 -

1 stop11h 15m

Tue 3/1112:30 -

2 stops15h 40m

Deal found 8/10£644

Thu 26/1117:15 -

1 stop27h 40m

Thu 3/1212:35 -

2 stops15h 35m

Deal found 12/10£645

Thu 26/1109:40 -

2 stops16h 46m

Thu 3/1218:20 -

2 stops17h 15m

Deal found 12/10£651

Thu 5/1106:30 -

1 stop14h 10m

Thu 12/1121:45 -

1 stop14h 10m

Deal found 8/10£684

Thu 26/1109:50 -

2 stops13h 40m

Thu 3/1219:40 -

3 stops32h 30m

Deal found 12/10£783

Thu 5/1108:50 -

2 stops15h 47m

Thu 12/1118:05 -

1 stop11h 50m

Deal found 8/10£787

Find flight deals from Belfast City to Dulles Intl

Round-trip from	£533
One-way from	£374

29/10-3/11
4 total stops
36h 05m total
Belfast to Washington, D.C.

Search Deals

3/4-31/12
3 total stops
33h 40m total
Belfast to Washington, D.C.

Search Deals

Cheapflights Fare Finder

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

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Sat 3/4

14:20-19:00

3 stops33h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£374

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Sat 3/4

07:05-19:15

2 stops17h 10m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£470

Fastest return journey

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Sat 3/4

07:05-15:50

1 stop13h 45m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£483

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 29/10

07:15-19:30

2 stops16h 15m

Washington, D.C. Dulles Intl

Tue 3/11

19:40-20:30

2 stops19h 50m

£533

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 29/10

09:40-16:55

1 stop11h 15m

Washington, D.C. Dulles Intl

Tue 3/11

12:30-09:10

2 stops15h 40m

£644

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 26/11

09:40-15:55

1 stop11h 15m

Washington, D.C. Dulles Intl

Thu 3/12

17:45-16:35

1 stop17h 50m

£645

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 26/11

09:40-21:26

2 stops16h 46m

Washington, D.C. Dulles Intl

Thu 3/12

18:20-16:35

2 stops17h 15m

£651

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 21/1

20:00-16:20

2 stops25h 20m

Washington, D.C. Dulles Intl

Mon 25/1

19:14-18:35

2 stops18h 21m

£710

BelfastWashington, D.C.

BHD Belfast City - IAD Washington, D.C. Dulles Intl

BHDIAD

Belfast City

Thu 28/1

15:25-16:20

2 stops29h 55m

Washington, D.C. Dulles Intl

Mon 1/2

16:13-16:05

2 stops18h 52m

£710

Flights are sorted by cheapest return flights first.

Deals found on 10/10

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.

BHD-IAD

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

How long is the flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport?
KLM and Delta can get you from Belfast City Airport to Washington, D.C. Dulles Intl Airport in just under 11h 15m. Your travel time can differ by up to 5h 31m. 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.

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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.

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Cheap flights from Belfast City Airport to Washington, D.C. Dulles Intl Airport from £374

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/4. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Belfast City to Dulles Intl

Cheapest flights from Belfast City to Dulles IntlExplore 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 12 October 2026.

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 12 October 2026.

Best flights from Belfast City to Dulles IntlDiscover carefully curated flight deals from Belfast City to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Discover carefully curated flight deals from Belfast City to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Last-minute flights from Belfast City to Dulles IntlDiscover last-minute flight deals from Belfast City to Dulles Intl. Data last updated 12 October 2026 and is based on user searches.

Discover last-minute flight deals from Belfast City to Dulles Intl. Data last updated 12 October 2026 and is based on user searches.

One-way flights from Belfast City to Dulles IntlSearch for one-way flight options from Belfast City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

Search for one-way flight options from Belfast City to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 12 October 2026.

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Best time to book a flight from Belfast City to Dulles Intl

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Related info for your journey

How long is the flight from Belfast City Airport to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Belfast City to Dulles Intl that include hotel bookings?

How can I find direct flights from Belfast City to Dulles Intl?

Can I find deals for business class flights from Belfast City to Dulles Intl?

Travelling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Belfast City to Dulles Intl

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Complete your trip to Dulles Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to District of Columbia

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Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 12 October 2026.

Search flights from Belfast City to Dulles Intl by cabin class

Find flights from Belfast City to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Belfast City and Dulles Intl flights

Browse other Belfast City and Dulles Intl flight options. Last updated on 12 October 2026.

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How does Cheapflights help users find flights from Belfast City to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from Belfast City to Dulles Intl?

Can Cheapflights find flights from Belfast City to Dulles Intl with no change fees?

Can Cheapflights notify me if prices for flights from Belfast City to Dulles Intl become cheaper?

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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 12 October 2026.

Best flights from Belfast City to Dulles Intl
Discover carefully curated flight deals from Belfast City to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 October 2026.

Last-minute flights from Belfast City to Dulles Intl
Discover last-minute flight deals from Belfast City to Dulles Intl. Data last updated 12 October 2026 and is based on user searches.

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 12 October 2026.