HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington

$159+ 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 3/27. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SEA
mar. 14 — mar. 211
sáb. 3/14
sáb. 3/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from London to Washington with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 febrero 12, 2026.

This Air Canada deal was found by Cheapflights users on 2/8. 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.
dom. 3/85:40 pm
YXU
-
SEA
1 stop7h 36m
Air Canada
mié. 3/118:00 pm
SEA
-
YXU
2 stops9h 46m
Air Canada
Deal found 2/8$274
This Air Canada deal was found by Cheapflights users on 2/8. 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.
lun. 3/25:10 am
YXU
-
PDX
2 stops16h 20m
Air Canada
mié. 3/47:05 pm
PDX
-
YXU
2 stops10h 41m
Air Canada
Deal found 2/8$471
This United Airlines deal was found by Cheapflights users on 2/10. 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.
sáb. 3/285:40 pm
YXU
-
SEA
1 stop7h 36m
United Airlines
sáb. 4/48:00 am
SEA
-
YXU
1 stop10h 18m
United Airlines
Deal found 2/10$484
This United Airlines deal was found by Cheapflights users on 2/8. 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.
lun. 3/25:40 pm
YXU
-
PDX
2 stops21h 15m
United Airlines
mié. 3/412:57 pm
PDX
-
YXU
3 stops25h 08m
United Airlines
Deal found 2/8$499
This United Airlines deal was found by Cheapflights users on 2/11. 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.
dom. 3/15:10 am
YXU
-
PDX
2 stops21h 04m
United Airlines
dom. 3/811:59 pm
PDX
-
YXU
2 stops14h 06m
United Airlines
Deal found 2/11$580
This Air Canada deal was found by Cheapflights users on 2/10. 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.
dom. 3/295:10 am
YXU
-
PDX
2 stops12h 30m
Air Canada
mar. 3/317:05 pm
PDX
-
YXU
2 stops10h 38m
Air Canada
Deal found 2/10$654
This Travelocity deal was found by Cheapflights users on 2/11. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/18:10 pm
YXU
-
PDX
3 stops15h 39m
Multiple Airlines
dom. 3/810:30 am
PDX
-
YXU
2 stops17h 05m
Multiple Airlines
Deal found 2/11$974

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 febrero 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$274
(Air Canada)

One-way from

$159
(Air Canada)
Provider with most accurate pricing for London-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London-Seattle/Tacoma Intl flights.
Search Deals
From London to Washington
Search Deals
One-way flight from London to Washington
Search Deals

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 febrero 12, 2026.
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

dom. 3/8

5:40 pm-10:16 pm

1 stop7h 36m

Seattle/Tacoma Intl

mié. 3/11

8:00 pm-8:46 am

2 stops9h 46m

$274

LondonPortland

YXU - PDX

YXUPDX

London

lun. 3/2

5:10 am-6:30 pm

2 stops16h 20m

Portland

mié. 3/4

7:05 pm-8:46 am

2 stops10h 41m

$471

LondonPortland

YXU - PDX

YXUPDX

London

lun. 3/2

5:40 pm-11:55 am

2 stops21h 15m

Portland

mié. 3/4

12:57 pm-5:05 pm

3 stops25h 08m

$499

LondonPortland

YXU - PDX

YXUPDX

London

dom. 3/1

5:10 am-11:14 pm

2 stops21h 04m

Portland

dom. 3/8

11:59 pm-5:05 pm

2 stops14h 06m

$580

LondonPortland

YXU - PDX

YXUPDX

London

dom. 3/29

5:10 am-2:40 pm

2 stops12h 30m

Portland

mar. 3/31

7:05 pm-8:43 am

2 stops10h 38m

$654

LondonPortland

YXU - PDX

YXUPDX

London

dom. 3/1

8:10 pm-8:55 pm

3 stops27h 45m

Portland

dom. 3/8

6:05 pm-6:35 am

3 stops33h 30m

$1,569

LondonPortland

YXU - PDX

YXUPDX

London

dom. 3/29

5:10 am-6:07 pm

3 stops15h 57m

Portland

mar. 3/31

5:00 am-9:18 pm

2 stops13h 18m

$1,816

LondonSeattle

YXU - SEA

YXUSEA

London

vie. 3/27

5:40 pm-10:16 pm

1 stop7h 36m

$159

LondonSeattle

YXU - SEA

YXUSEA

London

sáb. 3/28

5:40 pm-10:16 pm

1 stop7h 36m

$160

LondonSeattle

YXU - SEA

YXUSEA

London

vie. 3/27

5:10 am-10:59 pm

2 stops20h 49m

$195

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 14 results
1
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, December is the cheapest month in which you can book a flight from London, Ontario to State of Washington (average of $131). Flying from London, Ontario to State of Washington in July is currently the most expensive (average of $236). 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.

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 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.

  • 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 $131). Flying from London, Ontario to State of Washington in July is currently the most expensive (average of $236). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pearson Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to Miami flights
Toronto Island to Newark flights
Pearson Intl to Newark flights
Pearson Intl to Fort Lauderdale flights
Pearson Intl to Orlando flights
Pearson Intl to Las Vegas flights
Pearson Intl to Miami flights
Pearson Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to Newark flights
Pearson Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Pearson Intl to Dallas/Fort Worth flights
Toronto Island to Fort Lauderdale flights
Pearson Intl to San Francisco flights
Pearson Intl to Tampa flights
Toronto Island to Orlando flights
Pierre Elliott Trudeau Intl to Orlando flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pearson Intl to Seattle flights
Pearson Intl to Boston flights
Pearson Intl to Sky Harbor Intl flights
Toronto Island to Miami flights
Pearson Intl to Hobby flights
Pearson Intl to Atlanta flights
Pearson Intl to George Bush Intcntl flights
Pearson Intl to O'Hare Intl flights
Pearson Intl to Reagan-National flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Hamilton to Fort Lauderdale flights
Pearson Intl to Nashville flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pearson Intl to Fort Myers flights
Pearson Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pearson Intl to Ontario flights
Pearson Intl to San Diego flights
Toronto Island to Boston flights
Pearson Intl to West Palm Beach flights
Pierre Elliott Trudeau Intl to Boston flights
Ottawa to Fort Lauderdale flights
Ottawa to Orlando flights
Pearson Intl to Denver flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights
Pearson Intl to Austin flights
Pearson Intl to Honolulu flights
Toronto Island to Midway flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.