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 55m. 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.

$281+ 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 September 12, 2026.

Tue 10/203:30 pm -

1 stop4h 55m

Sat 10/246:10 am -

2 stops8h 40m

Deal found 9/11

$603

Sun 11/299:15 am -

1 stop6h 30m

Sun 11/2910:10 pm -

1 stop10h 27m

Deal found 9/8

$700

Fri 10/239:05 am -

1 stop5h 17m

Fri 10/306:11 am -

2 stops8h 36m

Deal found 9/8

$709

Wed 11/183:25 pm -

1 stop4h 45m

Sun 11/224:30 pm -

1 stop5h 22m

Deal found 9/7

$720

Wed 11/183:25 pm -

1 stop4h 45m

Sun 11/226:10 am -

2 stops8h 37m

Deal found 9/7

$810

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 September 12, 2026.

Thu 10/223:30 pm -

1 stop4h 55m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$281

Thu 10/225:55 pm -

3 stops47h 18m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/9

$314

Sun 10/253:25 pm -

1 stop4h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/10

$377

Sun 9/276:10 am -

2 stops28h 35m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$398

Tue 9/2210:05 am -

1 stop5h 20m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/12

$440

Sun 9/275:40 am -

1 stop9h 45m

Wed 12/3112:00 am -

Nonstop0h 00m

Deal found 9/7

$498

Find flight deals from London to Dulles Intl

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$603 (Air Canada)
One-way from	$281 (Air Canada)

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

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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 10/22

3:30 pm-8:25 pm

1 stop4h 55m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$281

LondonWashington, D.C.

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

YXUIAD

London

Thu 10/22

5:55 pm-5:13 pm

3 stops47h 18m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$314

Quickest round-trip

LondonWashington, D.C.

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

YXUIAD

London

Sun 10/25

3:25 pm-8:10 pm

1 stop4h 45m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$377

LondonWashington, D.C.

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

YXUIAD

London

Sun 9/27

6:10 am-10:45 am

2 stops28h 35m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$398

LondonWashington, D.C.

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

YXUIAD

London

Tue 9/22

10:05 am-3:25 pm

1 stop5h 20m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$440

LondonWashington, D.C.

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

YXUIAD

London

Sun 9/27

5:40 am-3:25 pm

1 stop9h 45m

Washington, D.C. Dulles Intl

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$498

LondonWashington, D.C.

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

YXUIAD

London

Tue 10/20

3:30 pm-8:25 pm

1 stop4h 55m

Washington, D.C. Dulles Intl

Sat 10/24

9:55 am-2:50 pm

1 stop4h 55m

$603

LondonWashington, D.C.

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

YXUIAD

London

Sun 11/29

9:15 am-3:45 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Sun 11/29

10:10 pm-8:37 am

1 stop10h 27m

$700

LondonWashington, D.C.

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

YXUIAD

London

Fri 10/23

9:05 am-2:22 pm

1 stop5h 17m

Washington, D.C. Dulles Intl

Fri 10/30

6:11 am-2:47 pm

2 stops8h 36m

$709

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Sorted by cheapest first

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 55m. 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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$281+ 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 10/22. 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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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 September 12, 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 September 12, 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 September 12, 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 September 12, 2026.

Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated September 12, 2026 and is based on user searches.

Discover last-minute flight deals from London to Dulles Intl. Data last updated September 12, 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 September 12, 2026.

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

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

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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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 September 12, 2026.

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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

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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 September 12, 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 September 12, 2026.

Last-minute flights from London to Dulles Intl
Discover last-minute flight deals from London to Dulles Intl. Data last updated September 12, 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 September 12, 2026.