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

There are many flights that can get you from London, Ontario to Washington, D.C. Dulles Intl Airport in 4h 45m. Fly via Air Canada to get the fastest option. Airlines will cover a distance of 341 mi.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London, Ontario to Washington, D.C. Dulles Intl Airport as you normally would.

Most accurate provider : When it comes to deals on London, Ontario-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on London, Ontario-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London, Ontario-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?

Located just 5.3 mi from the city center, London is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from London. Booking flights from London (YXU) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 0 different airlines.

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

Yes. In addition to deals on London to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from London to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Dulles Intl.

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

Yes. Cheapflights offers flight deals from London 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.

$180+ Cheap Flights from London, ON to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from London to Dulles Intl

Cheapest

Best

Last-minute

One-way

Cheapest flights from London to Dulles Intl
Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Thu 11/1910:00 am -

2 stops13h 43m

Thu 11/263:58 pm -

1 stop25h 02m

Deal found 10/22

$438

Thu 11/193:25 pm -

1 stop4h 45m

Thu 11/264:30 pm -

1 stop3h 57m

Deal found 10/22

$534

Mon 11/233:25 pm -

1 stop4h 45m

Mon 11/304:30 pm -

1 stop3h 57m

Deal found 10/25

$629

Mon 11/2310:15 am -

3 stops28h 48m

Mon 11/3011:20 am -

3 stops18h 15m

Deal found 10/25

$645

Wed 11/253:25 pm -

1 stop4h 45m

Sat 11/284:30 pm -

1 stop3h 57m

Deal found 10/24

$698

Sat 11/213:25 pm -

1 stop4h 45m

Sat 11/284:30 pm -

1 stop3h 57m

Deal found 10/24

$704

Best flights from London to Dulles Intl
Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Thu 11/193:25 pm -

1 stop4h 45m

Thu 11/264:30 pm -

1 stop3h 57m

Deal found 10/22

$534

Mon 11/2310:15 am -

3 stops28h 48m

Mon 11/3011:20 am -

3 stops18h 15m

Deal found 10/25

$645

Thu 12/175:30 am -

2 stops11h 52m

Sat 1/210:09 pm -

1 stop10h 28m

Deal found 10/23

$761

Mon 11/233:25 pm -

2 stops9h 05m

Mon 11/309:55 am -

1 stop4h 47m

Deal found 10/25

$689

Wed 11/253:25 pm -

1 stop4h 45m

Sat 11/289:55 am -

2 stops10h 32m

Deal found 10/24

$706

Mon 11/163:25 pm -

1 stop4h 45m

Wed 11/189:55 am -

1 stop4h 47m

Deal found 10/22

$709

Last-minute flights from London to Dulles Intl
Discover last-minute flight deals from London to Dulles Intl. Data last updated October 26, 2026 and is based on user searches.

Thu 11/1910:00 am -

2 stops13h 43m

Thu 11/263:58 pm -

1 stop25h 02m

Deal found 10/22

$438

Thu 11/193:25 pm -

1 stop4h 45m

Thu 11/264:30 pm -

1 stop3h 57m

Deal found 10/22

$534

Sat 11/213:25 pm -

1 stop4h 45m

Sat 11/284:30 pm -

1 stop3h 57m

Deal found 10/24

$704

Mon 11/233:25 pm -

1 stop4h 45m

Mon 11/304:30 pm -

1 stop3h 57m

Deal found 10/25

$629

Mon 11/2310:15 am -

3 stops28h 48m

Mon 11/3011:20 am -

3 stops18h 15m

Deal found 10/25

$645

Wed 11/253:25 pm -

1 stop4h 45m

Sat 11/284:30 pm -

1 stop3h 57m

Deal found 10/24

$698

Find flight deals from London to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$438 (Kiwi.com)
One-way from	$248 (Booking.com)

Provider with most accurate pricing for London-Washington, D.C. Dulles Intl flight deals.

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Provider most trusted by Cheapflights users for London-Washington, D.C. Dulles Intl flights.

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From London to Washington, D.C. Dulles Intl

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One-way flight from London to Washington, D.C. Dulles Intl

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Thu 12/10

10:00 am-8:28 pm

1 stop10h 28m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$180

Quickest round-trip

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 12/7

3:20 pm-8:10 pm

1 stop4h 50m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$345

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 11/29

10:15 am-2:49 pm

3 stops52h 34m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$387

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Thu 11/19

3:25 pm-8:10 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Thu 11/26

4:30 pm-8:27 pm

1 stop3h 57m

$534

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 11/23

10:15 am-3:03 pm

3 stops28h 48m

Washington, D.C. Dulles Intl

Mon 11/30

11:20 am-5:35 am

3 stops18h 15m

$645

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 11/23

3:25 pm-12:30 am

2 stops9h 05m

Washington, D.C. Dulles Intl

Mon 11/30

9:55 am-2:42 pm

1 stop4h 47m

$689

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Wed 11/25

3:25 pm-8:10 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Sat 11/28

9:55 am-8:27 pm

2 stops10h 32m

$706

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 11/16

3:25 pm-8:10 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Wed 11/18

9:55 am-2:42 pm

1 stop4h 47m

$709

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Thu 12/17

5:30 am-5:22 pm

2 stops11h 52m

Washington, D.C. Dulles Intl

Sat 1/2

10:09 pm-8:37 am

1 stop10h 28m

$761

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

Sorted by cheapest first

Compare providers for flights from London to Dulles Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Dulles Intl in October.

Provider	Price Accuracy	Trust Score*
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy2 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on London, Ontario-Washington, D.C. Dulles Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-Washington, D.C. Dulles Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-Washington, D.C. Dulles Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on London, Ontario-Washington, D.C. Dulles Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London, Ontario-Washington, D.C. Dulles Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from London to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from London with our price prediction graph.

YXU-IAD

Estimated round-trip 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

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?
Located just 5.3 mi from the city center, London is the airport most travelers will use when flying to Washington, D.C. Dulles Intl from London. Booking flights from London (YXU) to Washington, D.C. Dulles Intl should be relatively easy as there are 0 daily outbound flights to Washington, D.C. Dulles Intl from 0 different airlines.
How long is the flight from London, Ontario to Washington, D.C. Dulles Intl Airport?
There are many flights that can get you from London, Ontario to Washington, D.C. Dulles Intl Airport in 4h 45m. Fly via Air Canada to get the fastest option. Airlines will cover a distance of 341 mi.
Can I find deals for flights from London to Dulles Intl that include hotel bookings?
Yes. In addition to deals on London to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Dulles Intl.
Can I find deals for business class flights from London to Dulles Intl?
Yes. Cheapflights offers flight deals from London 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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$180+ Cheap flights from London, ON (YXU) to Dulles Intl (IAD)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from London to Dulles Intl with Cheapflights

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2. Select your favorite providers

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Cheap flight deals from London to Dulles Intl

Cheapest flights from London to Dulles IntlExplore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Best flights from London to Dulles IntlDiscover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated October 26, 2026 and is based on user searches.

Discover last-minute flight deals from London to Dulles Intl. Data last updated October 26, 2026 and is based on user searches.

One-way flights from London to Dulles IntlSearch for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.

Find flight deals from London to Dulles Intl

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Most trusted provider

Round-trip from

One-way from

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Washington, D.C. Dulles Intl Airport that are best for you.

Compare providers for flights from London to Dulles Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Dulles Intl in October.

Best time to book a flight from London to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from London with our price prediction graph.

Related info for your journey

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?

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

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

How can I find direct flights from London to Dulles Intl?

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

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

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Alternative routes for London to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

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

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 October 26, 2026.

Search flights from London to Dulles Intl by cabin class

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

London and Dulles Intl flights

Browse other London and Dulles Intl flight options. Last updated on October 26, 2026.

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Cheapest flights from London to Dulles Intl
Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 26, 2026.

Best flights from London to Dulles Intl
Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 26, 2026.

Last-minute flights from London to Dulles Intl
Discover last-minute flight deals from London to Dulles Intl. Data last updated October 26, 2026 and is based on user searches.

One-way flights from London to Dulles Intl
Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated October 26, 2026.