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$245+ 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 11/16. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SEA
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$530
(Trip.com)

One-way from

$246
(Air Canada)
Provider with most accurate pricing for London-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for London-Seattle/Tacoma Intl flights.
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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 November 3, 2025.

This Trip.com deal was found by Cheapflights users on 11/2. 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.
Wed 12/178:10 pmYXU - SEA
1 stop21h 10mWestJet
Wed 12/243:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 11/2$530
This Air Canada deal was found by Cheapflights users on 11/2. 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 12/179:25 amYXU - SEA
1 stop15h 51mAir Canada
Wed 12/248:00 pmSEA - YXU
2 stops18h 05mAir Canada
Deal found 11/2$540
This Justfly.com deal was found by Cheapflights users on 11/2. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/118:10 pmYXU - SEA
2 stops23h 36mWestJet
Thu 12/183:10 pmSEA - YXU
1 stop12h 24mWestJet
Deal found 11/2$569
This Air Canada deal was found by Cheapflights users on 11/2. 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.
Thu 12/115:40 pmYXU - SEA
1 stop7h 36mAir Canada
Thu 12/188:10 amSEA - YXU
1 stop10h 11mAir Canada
Deal found 11/2$616
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/179:25 amYXU - SEA
1 stop15h 51mUnited Airlines
Wed 12/241:35 pmSEA - YXU
3 stops24h 30mUnited Airlines
Deal found 11/2$623
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/115:10 amYXU - SEA
2 stops19h 36mUnited Airlines
Thu 12/185:02 amSEA - YXU
2 stops24h 44mUnited Airlines
Deal found 11/2$663

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 November 3, 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

Wed 12/17

8:10 pm-2:20 pm

1 stop21h 10m

Seattle/Tacoma Intl

Wed 12/24

3:10 pm-6:34 am

1 stop12h 24m

$530

LondonSeattle

YXU - SEA

YXUSEA

London

Wed 12/17

9:25 am-10:16 pm

1 stop15h 51m

Seattle/Tacoma Intl

Wed 12/24

8:00 pm-5:05 pm

2 stops18h 05m

$540

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 4/28

9:25 am-7:18 pm

2 stops12h 53m

Seattle/Tacoma Intl

Wed 4/29

5:50 am-9:18 pm

2 stops12h 28m

$547

LondonPortland

YXU - PDX

YXUPDX

London

Sun 2/22

5:10 am-2:40 pm

2 stops12h 30m

Portland

Thu 2/26

7:00 pm-8:46 am

2 stops10h 46m

$592

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 4/28

9:25 am-10:18 pm

3 stops15h 53m

Seattle/Tacoma Intl

Wed 4/29

5:00 pm-8:43 am

2 stops12h 43m

$612

LondonSeattle

YXU - SEA

YXUSEA

London

Thu 12/11

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

Thu 12/18

8:10 am-9:21 pm

1 stop10h 11m

$616

LondonPortland

YXU - PDX

YXUPDX

London

Sun 2/22

9:25 am-10:59 pm

3 stops16h 34m

Portland

Thu 2/26

8:30 am-9:21 pm

2 stops9h 51m

$997

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 11/16

5:40 pm-10:16 pm

1 stop7h 36m

$245

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 11/16

8:10 pm-8:50 pm

2 stops27h 40m

$375

LondonSeattle

YXU - SEA

YXUSEA

London

Sun 11/16

5:15 am-8:51 pm

3 stops18h 36m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

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, May is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $92). Flying from London, Ontario to State of Washington in June is currently the most expensive (average of $249). 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 November 3, 2025.

It’s typically best to fly out from London, Ontario to State of Washington in the afternoon. Doing so could potentially save you 55% on the flight price compared to flying in the morning, which is usually more expensive.

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 15h 51m. Fly via WestJet, Air Canada, 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?

    $245 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 $375 and $628, 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, May is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $92). Flying from London, Ontario to State of Washington in June is currently the most expensive (average of $249). 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.

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