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$173+ Cheap flights from London, ON (YXU) to Washington

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated September 16, 2025.

Round-trip from

$263
(Trip.com)

One-way from

$173
(Air Canada)
From London to Washington
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One-way flight from London to Washington
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Find flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This Trip.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/88:10 pmYXU - SEA
1 stop21h 10mWestJet
Tue 1/273:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$263
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:10 pmYXU - SEA
1 stop21h 10mWestJet
Tue 1/273:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$264
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/78:10 pmYXU - SEA
1 stop21h 10mWestJet
Tue 1/273:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$270
This Air Canada deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/55:45 amYXU - SEA
2 stops11h 46mAir Canada
Tue 1/275:50 amSEA - YXU
2 stops12h 31mAir Canada
Deal found 9/14$274
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:10 pmYXU - SEA
2 stops17h 13mWestJet
Thu 1/293:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$276
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/178:10 pmYXU - SEA
1 stop21h 10mWestJet
Wed 12/33:10 pmSEA - YXU
1 stop25h 02mWestJet
Deal found 9/14$296
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/148:10 pmYXU - SEA
2 stops17h 13mWestJet
Mon 1/263:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$297
This FlightHub deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:10 pmYXU - SEA
1 stop21h 10mWestJet
Tue 12/163:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 9/14$303
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/168:10 pmYXU - SEA
2 stops17h 13mWestJet
Tue 12/23:10 pmSEA - YXU
1 stop25h 02mWestJet
Deal found 9/14$304
This Air Canada deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/35:40 pmYXU - SEA
1 stop7h 36mAir Canada
Sun 1/185:50 amSEA - YXU
2 stops12h 31mAir Canada
Deal found 9/14$305

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from London to Washington that are best for you.

Fly from

London

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 12/16

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Wed 1/28

5:50 am-9:21 pm

2 stops12h 31m

$274

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 12/14

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Sun 1/25

8:00 pm-5:05 pm

2 stops18h 05m

$305

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 12/4

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Wed 1/21

8:15 am-9:21 pm

1 stop10h 06m

$310

LondonSeattle

YXU - SEA

YXUSEA

London

Sat 11/29

9:25 am-10:06 pm

2 stops15h 41m

Seattle/Tacoma Intl

Tue 1/20

5:50 am-9:21 pm

2 stops12h 31m

$310

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 12/1

8:10 pm-2:20 pm

1 stop21h 10m

Seattle/Tacoma Intl

Mon 1/19

3:10 pm-6:34 am

1 stop12h 24m

$316

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 12/7

8:10 pm-2:20 pm

1 stop21h 10m

Seattle/Tacoma Intl

Thu 1/29

3:10 pm-6:34 am

1 stop12h 24m

$316

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 12/8

8:10 pm-2:20 pm

1 stop21h 10m

Seattle/Tacoma Intl

Thu 1/29

3:10 pm-6:34 am

1 stop12h 24m

$316

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 12/14

8:10 pm-2:20 pm

1 stop21h 10m

Seattle/Tacoma Intl

Sun 1/25

3:10 pm-6:34 am

1 stop12h 24m

$316

LondonSeattle

YXU - SEA

YXUSEA

London

Wed 12/10

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Fri 1/30

12:40 pm-5:05 pm

3 stops25h 25m

$335

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 12/1

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Tue 1/20

5:00 am-9:21 pm

2 stops13h 21m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 20 results
1
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Best time to book a flight from London to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from London 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 London to Washington

What is the cheapest month to book a flight from London, Ontario to State of Washington?

Currently, January is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $238). Flying from London, Ontario to State of Washington in June is currently the most expensive (average of $387). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from London to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

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

Related info for your journey

Find useful and relevant information for your journey from London to Washington. 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 from for flights from London to Washington?

    For a flight from London to Washington, you will be flying from London. London (YXU) is just 5.3 mi from the center of the city.

  • How long is the flight from London, Ontario to State of Washington?

    There are many flights that can get you from London, Ontario to State of Washington in 7h 36m. Fly via Air Canada, WestJet, or United Airlines to get the fastest option. London, Ontario and State of Washington are separated by a distance of 2000 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from London, Ontario to State of Washington one-way?

    $173 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on WestJet and United Airlines, with prices starting from $191 and $212, respectively.

  • Can I find deals for flights from London to Washington that include hotel bookings?

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

  • How can I find direct flights from London to Washington?

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

  • Can I find deals for business class flights from London to Washington?

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

  • What is the cheapest month to book a flight from London, Ontario to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $238). Flying from London, Ontario to State of Washington in June is currently the most expensive (average of $387). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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