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$314+ Cheap flights from London, ON (YXU) to Washington

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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SEA
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from London to Washington

Best flights from London to Washington
Discover carefully curated flight deals from London to Washington that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 21, 2025.

This WestJet deal was found by Cheapflights users on 12/20. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:10 pmYXU - SEA
1 stop21h 09mWestJet
Thu 3/53:10 pmSEA - YXU
1 stop12h 25mWestJet
Deal found 12/20$314
This Air Canada deal was found by Cheapflights users on 12/18. 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.
Mon 3/25:10 amYXU - SEA
2 stops12h 51mAir Canada
Wed 3/45:50 amSEA - YXU
2 stops12h 31mAir Canada
Deal found 12/18$529
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Tue 3/35:10 amYXU - SEA
3 stops15h 53mUnited Airlines
Thu 3/55:00 amSEA - YXU
2 stops13h 21mUnited Airlines
Deal found 12/20$628
This WestJet deal was found by Cheapflights users on 12/18. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:10 pmYXU - SEA
1 stop21h 09mWestJet
Wed 3/43:10 pmSEA - YXU
1 stop12h 25mWestJet
Deal found 12/18$532
This Air Canada deal was found by Cheapflights users on 12/20. 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.
Tue 3/35:10 amYXU - SEA
2 stops12h 51mAir Canada
Thu 3/55:50 amSEA - YXU
2 stops12h 31mAir Canada
Deal found 12/20$551
This Air Canada deal was found by Cheapflights users on 12/19. 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 1/155:10 amYXU - PDX
2 stops12h 30mAir Canada
Mon 1/197:00 pmPDX - YXU
2 stops10h 46mAir Canada
Deal found 12/19$555
This Air Canada deal was found by Cheapflights users on 12/18. 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.
Sun 1/189:50 amYXU - PDX
2 stops11h 40mAir Canada
Wed 1/213:15 pmPDX - YXU
2 stops22h 50mAir Canada
Deal found 12/18$579

Find flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$314
(WestJet)

One-way from

$218
(Kiwi.com)
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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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 December 21, 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 3/3

8:10 pm-2:19 pm

1 stop21h 09m

Seattle/Tacoma Intl

Thu 3/5

3:10 pm-6:35 am

1 stop12h 25m

$314

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

5:10 am-3:01 pm

2 stops12h 51m

Seattle/Tacoma Intl

Wed 3/4

5:50 am-9:21 pm

2 stops12h 31m

$529

LondonSeattle

YXU - SEA

YXUSEA

London

Mon 3/2

8:10 pm-2:19 pm

1 stop21h 09m

Seattle/Tacoma Intl

Wed 3/4

3:10 pm-6:35 am

1 stop12h 25m

$532

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 3/3

5:10 am-3:01 pm

2 stops12h 51m

Seattle/Tacoma Intl

Thu 3/5

5:50 am-9:21 pm

2 stops12h 31m

$551

LondonPortland

YXU - PDX

YXUPDX

London

Thu 1/15

5:10 am-2:40 pm

2 stops12h 30m

Portland

Mon 1/19

7:00 pm-8:46 am

2 stops10h 46m

$555

LondonPortland

YXU - PDX

YXUPDX

London

Sun 1/18

9:50 am-6:30 pm

2 stops11h 40m

Portland

Wed 1/21

3:15 pm-5:05 pm

2 stops22h 50m

$579

LondonSeattle

YXU - SEA

YXUSEA

London

Tue 3/3

5:10 am-6:03 pm

3 stops15h 53m

Seattle/Tacoma Intl

Thu 3/5

5:00 am-9:21 pm

2 stops13h 21m

$628

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

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, December is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $133). 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 December 21, 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 12h 51m. Fly via WestJet or Air Canada 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.

  • 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, December is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $133). 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.

See more FAQs

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