What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to London, Ontario?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to London, Ontario flight should consider departing on Friday afternoons when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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

It’s typically best to fly out from Washington, D.C. Dulles Intl Airport to London, Ontario at noon. Doing so could potentially save you 18% on the flight price compared to flying in the morning, which is usually more expensive.

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

Most trusted provider : When it comes to deals on Washington, D.C. Dulles Intl Airport-London, Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C. Dulles Intl Airport-London, Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

London (YXU) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to London. You should not have trouble finding flights to London from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights to the London airport from Washington, D.C. Dulles Intl. It is only a 5.3 mi journey from London (YXU) to London’s city center.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Dulles Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$475+ Flights from Washington, D.C. Dulles Intl Airport to London, ON

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2. Select your favorite providers

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3. Compare prices and book

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Cheap flight deals from Dulles Intl to London

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$625 (Air Canada)

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

Search Deals

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

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From Washington, D.C. Dulles Intl to London

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Find flight deals from Dulles Intl to London

Cheapest flights from Dulles Intl to London
Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Mon 6/96:45 pmIAD - YXU

1 stop10h 29mWestJet

Mon 6/166:00 amYXU - IAD

1 stop11h 54mWestJet

Deal found 4/22

$475

Mon 6/96:45 pmIAD - YXU

1 stop10h 29mMultiple Airlines

Mon 6/169:45 pmYXU - IAD

3 stops35h 52mMultiple Airlines

Deal found 4/22

$501

Tue 8/1210:34 pmIAD - YXU

2 stops18h 33mUnited Airlines

Sun 8/316:15 amYXU - IAD

2 stops23h 07mUnited Airlines

Deal found 4/22

$654

Thu 5/2210:25 amIAD - YXU

1 stop4h 38mAir Canada

Mon 5/269:55 amYXU - IAD

2 stops11h 09mAir Canada

Deal found 4/22

$696

Best flights from Dulles Intl to London
Discover carefully curated flight deals from Dulles Intl to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 22, 2025.

Mon 5/263:30 pmIAD - YXU

1 stop5h 58mMultiple Airlines

Wed 5/289:55 amYXU - IAD

1 stop3h 46mMultiple Airlines

Deal found 4/21

$625

Thu 5/2210:25 amIAD - YXU

1 stop4h 38mAir Canada

Mon 5/263:45 pmYXU - IAD

1 stop16h 09mAir Canada

Deal found 4/21

$659

Mon 5/266:00 amIAD - YXU

3 stops23h 14mWestJet

Wed 5/286:00 amYXU - IAD

1 stop11h 54mWestJet

Deal found 4/21

$733

Thu 6/510:15 pmIAD - YXU

2 stops16h 43mUnited Airlines

Thu 6/126:15 amYXU - IAD

2 stops23h 00mUnited Airlines

Deal found 4/21

$735

Last-minute flights from Dulles Intl to London
Discover last-minute flight deals from Dulles Intl to London. Data last updated April 22, 2025 and is based on user searches.

Thu 5/2210:25 amIAD - YXU

1 stop4h 38mMultiple Airlines

Mon 5/266:15 amYXU - IAD

1 stop5h 24mMultiple Airlines

Deal found 4/22

$652

Thu 5/2210:25 amIAD - YXU

1 stop4h 38mAir Canada

Mon 5/269:55 amYXU - IAD

2 stops11h 09mAir Canada

Deal found 4/22

$696

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 6/9

6:45 pm-5:14 am

1 stop10h 29m

London

Mon 6/16

6:00 am-5:54 pm

1 stop11h 54m

$475

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 6/9

6:45 pm-5:14 am

1 stop10h 29m

London

Mon 6/16

9:45 pm-9:37 am

3 stops35h 52m

$501

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Tue 8/12

10:34 pm-5:07 pm

2 stops18h 33m

London

Sun 8/31

6:15 am-5:22 am

2 stops23h 07m

$654

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 5/22

10:25 am-3:03 pm

1 stop4h 38m

London

Mon 5/26

9:55 am-9:04 pm

2 stops11h 09m

$696

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Compare providers for flights from Dulles Intl to London

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

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 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 Washington, D.C. Dulles Intl Airport-London, Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-London, Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-London, Ontario flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-London, Ontario flights, Cheapflights users trust eDreams the most. eDreams 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 Washington, D.C. Dulles Intl Airport-London, Ontario 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 Dulles Intl to London

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

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.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to London

Rainfall in London by month

In terms of precipitation, rainfall in London, Ontario ranges from 2.8 - 3.9 inches per month. January is typically the wettest month, when rainfall can reach 3.9 in. March is typically the driest time to visit London, Ontario when rainfall is around 2.8 in.

Temperature in London by month

If weather is an important factor for your trip to London, Ontario, 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 68.0 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 21.2 F).

Reviews of airlines servicing London

United Airlines

7.4

Good

8,683 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,683 reviews

United Airlines

7.4

Good

8,683 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

WestJet

7.2

Good

2,813 reviews

United Airlines

7.4

Good

8,683 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Air Canada

7.0

Good

9,180 reviews

United Airlines

7.4

Good

8,683 reviews

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

What airport do you fly into for flights to London from Washington, D.C. Dulles Intl?
London (YXU) is the airport you will fly into if you book a flight from Washington, D.C. Dulles Intl to London. You should not have trouble finding flights to London from Washington, D.C. Dulles Intl; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights to the London airport from Washington, D.C. Dulles Intl. It is only a 5.3 mi journey from London (YXU) to London’s city center.
Can I find deals for flights from Dulles Intl to London that include hotel bookings?
Yes. In addition to deals on Dulles Intl to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Dulles Intl to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to London.
Can I find deals for business class flights from Dulles Intl to London?
Yes. Cheapflights offers flight deals from Dulles Intl to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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Alternative routes for Dulles Intl to London

Dulles Intl to Pearson Intl flights

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Dulles Intl to Ottawa flights

Reagan-National to Ottawa flights

Reagan-National to Toronto Island flights

Baltimore to Toronto Island flights

Baltimore to Ottawa flights

Dulles Intl to Hamilton flights

Reagan-National to London flights

Baltimore to London flights

Dulles Intl to Sudbury flights

Reagan-National to Sault Ste Marie flights

Dulles Intl to Thunder Bay flights

Dulles Intl to Sault Ste Marie flights

Reagan-National to Thunder Bay flights

Baltimore to Windsor flights

Baltimore to Sault Ste Marie flights

Baltimore to Thunder Bay flights

Dulles Intl to Timmins flights

Reagan-National to Windsor flights

Baltimore to North Bay flights

Reagan-National to Hamilton flights

Dulles Intl to Kingston flights

Reagan-National to Kingston flights

Baltimore to Kingston flights

Complete your trip

London, Ontario car rentals

Toronto Pearson Intl Airport car rentals

Hamilton Airport car rentals

Toronto Region of Waterloo Intl Airport car rentals

London Airport car rentals

Sarnia Airport car rentals

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Ottawa car rentals

Windsor car rentals

Kitchener car rentals

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Niagara Falls car rentals

Top airline flying from Dulles Intl to London

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$264	Average$560	FlexibilityNo cancel fee	On-time67%

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$475+ Cheap flights from Dulles Intl (IAD) to London, ON (YXU)

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 6/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Dulles Intl to London with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Dulles Intl to London

Most accurate provider

Most trusted provider

Round-trip from

Find flight deals from Dulles Intl to London

Cheapest flights from Dulles Intl to LondonExplore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from Dulles Intl to London

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 Dulles Intl to London in April.

Best time to book a flight from Dulles Intl to London

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to London

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Dulles Intl to London

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

Top airline flying from Dulles Intl to London

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Dulles Intl to London
Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.