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

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

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.

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).

What are the most popular routes from Washington, D.C. to London, Ontario?

The most popular route from Washington, D.C. to London, Ontario is Washington, D.C. Dulles Intl - London. You may also consider Baltimore/Washington - London or Washington, D.C. Reagan-National - London.

What is the cheapest day to fly round-trip from Washington, D.C. to London, Ontario?

Flights from Washington, D.C. to London, Ontario are found to be more expensive on Friday. This shouldn't discourage you from searching as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London, Ontario.

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

One of the essential ways to save on airfare from Washington, D.C. to London, Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 23% on airfare.

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

London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to London. 0 airlines have flights to London from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to London should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.

Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Washington, D.C. to London?

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

Can I find deals for business class flights from Washington, D.C. to London?

Yes. Cheapflights offers flight deals from Washington, D.C. 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.

$300+ Flights from Washington, D.C. to London, ON

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Cheap flight deals from Washington, D.C. to London

Round-trip from	$479 (Mytrip)
One-way from	$300 (Kiwi.com)

From Washington, D.C. (WAS) to London

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One-way flight from Washington, D.C. (WAS) to London

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Find flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Fri 8/155:45 amBWI - YXU

2 stops23h 29mMultiple Airlines

Fri 8/226:00 amYXU - BWI

2 stops24h 54mMultiple Airlines

Deal found 7/1

$479

Thu 7/3111:58 amIAD - YXU

3 stops33h 02mMultiple Airlines

Thu 8/76:00 amYXU - IAD

3 stops30h 31mMultiple Airlines

Deal found 7/1

$661

Fri 8/156:45 pmIAD - YXU

1 stop10h 29mWestJet

Fri 8/226:00 amYXU - IAD

1 stop11h 54mWestJet

Deal found 7/1

$720

Thu 8/146:15 amBWI - YXU

2 stops8h 47mUnited Airlines

Thu 8/216:15 amYXU - BWI

2 stops11h 14mUnited Airlines

Deal found 6/30

$731

Mon 7/1410:20 amIAD - YXU

1 stop4h 42mAir Canada

Thu 7/179:55 amYXU - IAD

1 stop3h 47mAir Canada

Deal found 6/30

$754

Thu 7/3111:00 amDCA - YXU

1 stop6h 07mAir Canada

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mAir Canada

Deal found 7/1

$775

Thu 8/146:35 amIAD - YXU

2 stops8h 27mUnited Airlines

Thu 8/219:55 amYXU - IAD

1 stop6h 15mUnited Airlines

Deal found 6/30

$785

Thu 8/147:25 amDCA - YXU

2 stops7h 37mUnited Airlines

Thu 8/216:15 amYXU - DCA

2 stops6h 44mUnited Airlines

Deal found 6/30

$800

Thu 7/3111:10 amDCA - YXU

2 stops10h 17mMultiple Airlines

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mMultiple Airlines

Deal found 7/1

$861

Fri 8/296:00 amDCA - YXU

2 stops13h 09mWestJet

Tue 9/26:00 amYXU - DCA

2 stops14h 47mWestJet

Deal found 7/1

$1,337

Best flights from Washington, D.C. to London
Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 2, 2025.

Fri 8/155:45 amBWI - YXU

2 stops23h 29mMultiple Airlines

Fri 8/226:00 amYXU - BWI

2 stops24h 54mMultiple Airlines

Deal found 7/1

$479

Fri 8/156:45 pmIAD - YXU

1 stop10h 29mWestJet

Fri 8/226:00 amYXU - IAD

1 stop11h 54mWestJet

Deal found 7/1

$720

Thu 8/146:15 amBWI - YXU

2 stops8h 47mUnited Airlines

Thu 8/216:15 amYXU - BWI

2 stops11h 14mUnited Airlines

Deal found 6/30

$731

Mon 7/1410:20 amIAD - YXU

1 stop4h 42mAir Canada

Thu 7/179:55 amYXU - IAD

1 stop3h 47mAir Canada

Deal found 6/30

$754

Thu 7/3111:58 amIAD - YXU

3 stops33h 02mMultiple Airlines

Thu 8/76:00 amYXU - IAD

3 stops30h 31mMultiple Airlines

Deal found 7/1

$661

Thu 7/3111:00 amDCA - YXU

1 stop6h 07mAir Canada

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mAir Canada

Deal found 7/1

$775

Thu 8/146:35 amIAD - YXU

2 stops8h 27mUnited Airlines

Thu 8/219:55 amYXU - IAD

1 stop6h 15mUnited Airlines

Deal found 6/30

$785

Thu 8/147:25 amDCA - YXU

2 stops7h 37mUnited Airlines

Thu 8/216:15 amYXU - DCA

2 stops6h 44mUnited Airlines

Deal found 6/30

$800

Thu 7/3111:10 amDCA - YXU

2 stops10h 17mMultiple Airlines

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mMultiple Airlines

Deal found 7/1

$861

Fri 8/296:00 amDCA - YXU

2 stops13h 09mWestJet

Tue 9/26:00 amYXU - DCA

2 stops14h 47mWestJet

Deal found 7/1

$1,337

Last-minute flights from Washington, D.C. to London
Discover last-minute flight deals from Washington, D.C. to London. Data last updated July 2, 2025 and is based on user searches.

Mon 7/76:00 amBWI - YXU

3 stops23h 14mMultiple Airlines

Mon 7/149:45 pmYXU - BWI

2 stops32h 20mMultiple Airlines

Deal found 6/30

$788

Mon 7/75:20 pmBWI - YXU

2 stops15h 57mUnited Airlines

Mon 7/145:45 pmYXU - BWI

2 stops16h 18mUnited Airlines

Deal found 6/30

$966

Mon 7/72:55 pmDCA - YXU

2 stops14h 19mWestJet

Mon 7/148:00 pmYXU - DCA

2 stops23h 44mWestJet

Deal found 6/30

$1,441

Mon 7/712:45 pmIAD - YXU

2 stops30h 24mWestJet

Mon 7/148:00 pmYXU - IAD

2 stops15h 50mWestJet

Deal found 6/30

$1,441

Mon 7/1410:20 amIAD - YXU

1 stop4h 42mAir Canada

Thu 7/179:55 amYXU - IAD

1 stop3h 47mAir Canada

Deal found 6/30

$754

Thu 7/3111:58 amIAD - YXU

3 stops33h 02mMultiple Airlines

Thu 8/76:00 amYXU - IAD

3 stops30h 31mMultiple Airlines

Deal found 7/1

$661

Thu 7/3111:00 amDCA - YXU

1 stop6h 07mAir Canada

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mAir Canada

Deal found 7/1

$775

Thu 7/3111:10 amDCA - YXU

2 stops10h 17mMultiple Airlines

Thu 8/75:45 pmYXU - DCA

1 stop4h 42mMultiple Airlines

Deal found 7/1

$861

Thu 8/146:15 amBWI - YXU

2 stops8h 47mUnited Airlines

Thu 8/216:15 amYXU - BWI

2 stops11h 14mUnited Airlines

Deal found 6/30

$731

Thu 8/146:35 amIAD - YXU

2 stops8h 27mUnited Airlines

Thu 8/219:55 amYXU - IAD

1 stop6h 15mUnited Airlines

Deal found 6/30

$785

Thu 8/147:25 amDCA - YXU

2 stops7h 37mUnited Airlines

Thu 8/216:15 amYXU - DCA

2 stops6h 44mUnited Airlines

Deal found 6/30

$800

Fri 8/155:45 amBWI - YXU

2 stops23h 29mMultiple Airlines

Fri 8/226:00 amYXU - BWI

2 stops24h 54mMultiple Airlines

Deal found 7/1

$479

One-way flights from Washington, D.C. to London
Search for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated July 2, 2025.

Sat 11/158:30 pmBWI - YXU

2 stops22h 42mMultiple Airlines

Deal found 7/2

$300

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Fri 8/15

5:45 am-5:14 am

2 stops23h 29m

London

Fri 8/22

6:00 am-6:54 am

2 stops24h 54m

$479

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 7/31

11:58 am-9:00 pm

3 stops33h 02m

London

Thu 8/7

6:00 am-12:31 pm

3 stops30h 31m

$661

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 8/15

6:45 pm-5:14 am

1 stop10h 29m

London

Fri 8/22

6:00 am-5:54 pm

1 stop11h 54m

$720

BaltimoreLondon

BWI - YXU

BWIYXU

Baltimore/Washington

Thu 8/14

6:15 am-3:02 pm

2 stops8h 47m

London

Thu 8/21

6:15 am-5:29 pm

2 stops11h 14m

$731

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Mon 7/14

10:20 am-3:02 pm

1 stop4h 42m

London

Thu 7/17

9:55 am-1:42 pm

1 stop3h 47m

$754

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 7/31

11:00 am-5:07 pm

1 stop6h 07m

London

Thu 8/7

5:45 pm-10:27 pm

1 stop4h 42m

$775

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 8/14

6:35 am-3:02 pm

2 stops8h 27m

London

Thu 8/21

9:55 am-4:10 pm

1 stop6h 15m

$785

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 8/14

7:25 am-3:02 pm

2 stops7h 37m

London

Thu 8/21

6:15 am-12:59 pm

2 stops6h 44m

$800

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Thu 7/31

11:10 am-9:27 pm

2 stops10h 17m

London

Thu 8/7

5:45 pm-10:27 pm

1 stop4h 42m

$861

Washington, D.C.London

DCA - YXU

DCAYXU

Washington, D.C. Reagan-National

Fri 8/29

6:00 am-7:09 pm

2 stops13h 09m

London

Tue 9/2

6:00 am-8:47 pm

2 stops14h 47m

$1,337

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 11 results

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. 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. to London

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing London

Read reviews from past customers who have flown United Airlines, WestJet, and Air Canada from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,861 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

8,861 reviews

United Airlines

7.4

Good

8,861 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

2,912 reviews

United Airlines

7.4

Good

8,861 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

7.1

Good

9,669 reviews

United Airlines

7.4

Good

8,861 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.?
London (YXU), located 5.3 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to London. 0 airlines have flights to London from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to London should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. per day.
What are the most popular routes from Washington, D.C. to London, Ontario?
The most popular route from Washington, D.C. to London, Ontario is Washington, D.C. Dulles Intl - London. You may also consider Baltimore/Washington - London or Washington, D.C. Reagan-National - London.
Can I find deals for flights from Washington, D.C. to London that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to London.
Can I find deals for business class flights from Washington, D.C. to London?
Yes. Cheapflights offers flight deals from Washington, D.C. 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.

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$300+ Cheap flights from Washington, D.C. (WAS) to London, ON (YXU)

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 11/15. Fares are subject to change and may not be available on all flights or dates of travel.

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Find flight deals from Washington, D.C. to London

Cheapest flights from Washington, D.C. to LondonExplore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Washington, D.C. to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. with our price prediction graph.

Cheapflights Insights

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

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated July 2, 2025.

Read reviews from past customers who have flown United Airlines, WestJet, and Air Canada from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. 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.?

What are the most popular routes from Washington, D.C. to London, Ontario?

Can I find deals for flights from Washington, D.C. to London that include hotel bookings?

How can I find direct flights from Washington, D.C. to London?

Can I find deals for business class flights from Washington, D.C. to London?

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Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 2, 2025.