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$212+ Cheap flights from Washington 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 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YXU
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Washington to London

Keep the following information in mind while searching for Washington to London flight deals. Data was last updated February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$416
(Kiwi.com)

One-way from

$212
(Air Canada)
Provider with most accurate pricing for Seattle/Tacoma Intl-London flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London flights.
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From Washington to London
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One-way flight from Washington to London
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Cheapest flights from Washington to London
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/311:30 amSEA - YXU
2 stops28h 43mWestJet
Thu 4/108:00 pmYXU - SEA
1 stop21h 21mWestJet
Deal found 2/20$452
This Mytrip deal was found by Cheapflights users on 2/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:48 amSEA - YXU
3 stops30h 25mMultiple Airlines
Thu 4/108:00 pmYXU - SEA
2 stops17h 00mMultiple Airlines
Deal found 2/20$465
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/107:05 pmSEA - YXU
2 stops11h 08mAir Canada
Wed 4/163:25 pmYXU - SEA
1 stop9h 01mAir Canada
Deal found 2/20$504
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Sun 4/66:05 amSEA - YXU
1 stop11h 13mUnited Airlines
Sun 4/133:25 pmYXU - SEA
1 stop9h 01mUnited Airlines
Deal found 2/20$579

Find flights from Washington to London within your budget

Customize your flight search to find flights from Washington to London 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 February 20, 2025.

Fly from

Washington

Fly to

London

Route

Depart

Return

Price

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 4/3

11:30 am-7:13 pm

2 stops28h 43m

London

Thu 4/10

8:00 pm-2:21 pm

1 stop21h 21m

$452

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 4/3

9:48 am-7:13 pm

3 stops30h 25m

London

Thu 4/10

8:00 pm-10:00 am

2 stops17h 00m

$465

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 4/10

7:05 pm-9:13 am

2 stops11h 08m

London

Wed 4/16

3:25 pm-9:26 pm

1 stop9h 01m

$504

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 4/6

6:05 am-8:18 pm

1 stop11h 13m

London

Sun 4/13

3:25 pm-9:26 pm

1 stop9h 01m

$579

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 3/21

7:05 pm-9:15 am

2 stops11h 10m

$212

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 3/21

6:15 am-9:15 am

3 stops24h 00m

$667

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Best time to book a flight from Washington to London

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

Travel insights for flights from Washington to London

Get recent, data-driven insights about flights from Washington to London including ideal travel times, pricing trends, and more.

Rainfall in London by month

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

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

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 February 20, 2025.
United Airlines
7.4
Good
8,765 reviews

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

United Airlines
7.4
Good
8,765 reviews
United Airlines
7.4
Good
8,765 reviews

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

WestJet
7.2
Good
2,801 reviews
United Airlines
7.4
Good
8,765 reviews

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Air Canada
7.0
Good
8,748 reviews
United Airlines
7.4
Good
8,765 reviews

Comfort

7.3

Entertainment

7.1

Food

6.7

Overall

7.4

Crew

8.1

Boarding

7.7

Reviews

1 / 20

2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Located just 5.3 mi from the city center, London (YXU) is the airport most travelers will use when flying to London from Washington.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington 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 Washington to London

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Top airline flying from Washington to London

Discover the top airline that operate flights from Washington to London. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$205Average$530FlexibilityNo cancel feeOn-time67%
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