What is the cheapest airline that flies from Washington to London?

WestJet and Air Canada are the most popular carriers operating from Washington to London

How long does it take to fly to London, Ontario?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into London, Ontario, then you can expect flight times to average 4h 32m and 6h 34m, respectively.

What airlines fly to London, Ontario?

Alaska Airlines, WestJet and Air Canada are the top three most popular airlines that fly to London, Ontario from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to London, Ontario. Keep in mind that there are 5 different airlines that fly to London, Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington to London Airport?

Prices for flights from Washington to London Airport refresh daily.

How old do you have to be to fly from Washington to London Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to London Airport.

What documentation or ID do you need to fly to London Airport?

The required travel and health documents for your London Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$261 Cheap Flights from Washington to London, Ontario in 2026/27

Find the cheapest flights from Washington to London

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:52 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

8h 43m1 stop Calgary

6:40 am - 1:40 pmYXU London-SEA Seattle/Tacoma Intl

10h 00m1 stop Calgary

$615Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

6:00 am - 5:35 amSEA Seattle/Tacoma Intl-YXU London

20h 35m2 stops Phoenix Sky Harbor Intl Calgary

6:40 am - 1:40 pmYXU London-SEA Seattle/Tacoma Intl

10h 00m1 stop Calgary

$704Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

2:30 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

12h 05m1 stop Calgary

8:20 am - 12:22 pmYXU London-SEA Seattle/Tacoma Intl

31h 02m3 stops Orlando Atlanta Hartsfield-Jackson Denver Intl

$804Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

7:45 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

30h 50m3 stops Vancouver Intl Victoria Intl Calgary

8:20 am - 12:22 pmYXU London-SEA Seattle/Tacoma Intl

31h 02m3 stops Orlando Atlanta Hartsfield-Jackson Denver Intl

$948Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

7:45 pm - 5:35 amSEA Seattle/Tacoma Intl-YXU London

30h 50m3 stops Vancouver Intl Victoria Intl Calgary

8:20 am - 12:22 pmYXU London-SEA Seattle/Tacoma Intl

31h 02m2 stops Orlando Denver Intl

$953Multiple Airlines

Thu, Dec 24 - Thu, Dec 31

8:40 am - 9:52 pmSEA Seattle/Tacoma Intl-YXU London

10h 12m2 stops Vancouver Intl Toronto Pearson Intl

3:20 pm - 8:59 pmYXU London-SEA Seattle/Tacoma Intl

8h 39m1 stop Toronto Pearson Intl

$988Air Canada

Tue, Jan 12 - Sat, Jan 16

8:40 am - 9:52 pmSEA Seattle/Tacoma Intl-YXU London

10h 12m2 stops Vancouver Intl Toronto Pearson Intl

5:30 am - 2:37 pmYXU London-SEA Seattle/Tacoma Intl

12h 07m2 stops Toronto Pearson Intl Vancouver Intl

$989Air Canada

Tue, Jan 12 - Sat, Jan 16

7:45 am - 8:37 amSEA Seattle/Tacoma Intl-YXU London

21h 52m1 stop Toronto Pearson Intl

3:20 pm - 8:59 pmYXU London-SEA Seattle/Tacoma Intl

8h 39m1 stop Toronto Pearson Intl

$1,011Air Canada

Tue, Jan 12 - Sat, Jan 16

7:45 am - 8:32 amSEA Seattle/Tacoma Intl-YXU London

21h 47m1 stop Toronto Pearson Intl

5:50 pm - 9:32 amYXU London-SEA Seattle/Tacoma Intl

18h 42m2 stops Toronto Pearson Intl Vancouver Intl

$1,035Air Canada

Tue, Jan 12 - Sat, Jan 16

7:45 am - 8:32 amSEA Seattle/Tacoma Intl-YXU London

21h 47m1 stop Toronto Pearson Intl

9:15 am - 2:37 pmYXU London-SEA Seattle/Tacoma Intl

32h 22m2 stops Toronto Pearson Intl Vancouver Intl

$1,041Air Canada

Tue, Jan 12 - Sat, Jan 16

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Air Canada flights from State of Washington to London, Ontario

Our best Air Canada deals on State of Washington to London, Ontario flight tickets

Air Canada

Jan 12

SEA8:40 amSeattle/Tacoma Intl

10h 12m

2 stops

YXU9:52 pmLondon

Jan 16

YXU3:20 pmLondon

8h 39m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$988

Air Canada

Jan 12

SEA8:40 amSeattle/Tacoma Intl

10h 12m

2 stops

YXU9:52 pmLondon

Jan 16

YXU5:30 amLondon

12h 07m

2 stops

SEA2:37 pmSeattle/Tacoma Intl

$989

Air Canada

Jan 12

SEA7:45 amSeattle/Tacoma Intl

21h 52m

1 stop

YXU8:37 amLondon

Jan 16

YXU3:20 pmLondon

8h 39m

1 stop

SEA8:59 pmSeattle/Tacoma Intl

$1,011

momondo Fare Finder

Use the filters below to find and compare flights from Washington to London, Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 12/24

5:52 pm-5:35 am

1 stop8h 43m

London

Thu 12/31

6:40 am-1:40 pm

1 stop10h 00m

$615

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 12/24

6:00 am-5:35 am

2 stops20h 35m

London

Thu 12/31

6:40 am-1:40 pm

1 stop10h 00m

$704

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 12/24

2:30 pm-5:35 am

1 stop12h 05m

London

Thu 12/31

8:20 am-12:22 pm

3 stops31h 02m

$804

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 12/24

7:45 pm-5:35 am

3 stops30h 50m

London

Thu 12/31

8:20 am-12:22 pm

3 stops31h 02m

$948

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 12/24

7:45 pm-5:35 am

3 stops30h 50m

London

Thu 12/31

8:20 am-12:22 pm

2 stops31h 02m

$953

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Tue 1/12

8:40 am-9:52 pm

2 stops10h 12m

London

Sat 1/16

3:20 pm-8:59 pm

1 stop8h 39m

$988

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Tue 1/12

8:40 am-9:52 pm

2 stops10h 12m

London

Sat 1/16

5:30 am-2:37 pm

2 stops12h 07m

$989

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Tue 1/12

7:45 am-8:37 am

1 stop21h 52m

London

Sat 1/16

3:20 pm-8:59 pm

1 stop8h 39m

$1,011

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Tue 1/12

7:45 am-8:32 am

1 stop21h 47m

London

Sat 1/16

5:50 pm-9:32 am

2 stops18h 42m

$1,035

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Tue 1/12

7:45 am-8:32 am

1 stop21h 47m

London

Sat 1/16

9:15 am-2:37 pm

2 stops32h 22m

$1,041

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to London, Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

Can stopping save me money on State of Washington to London, Ontario flights?

You could potentially save up to 56% on your flight if you consider stops on a State of Washington to London, Ontario flight.

Cheap State of Washington to London, Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to London, Ontario

Best Price Found	$261
Fastest flight time	8h 43m
Direct flights	None

The best one-way flight to London, Ontario from State of Washington in the past 72 hours is $261. The best round-trip flight deal from State of Washington to London, Ontario found on momondo in the last 72 hours is $615.

The fastest flight from State of Washington to London, Ontario takes 8h 43m

There are no direct flights from State of Washington to London, Ontario. There are no popular flight routes from State of Washington to London, Ontario.

Search flight deals

Frequently asked questions about flying from Washington to London, Ontario

When did momondo last update prices for flights from Washington to London Airport?
Prices for flights from Washington to London Airport refresh daily.
How old do you have to be to fly from Washington to London Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to London Airport.
What documentation or ID do you need to fly to London Airport?
The required travel and health documents for your London Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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Port Stanley

Why use momondo?

Why should I use momondo to find a flight deal from Washington to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to London for you.

Can I find flights from Washington to London with flexible booking policies on momondo?

Yes. All flights to London from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to London?

momondo provides multiple filters to help you find the best flight to London from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

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Cheap flights from Washington to London from $261

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to London departing on 12/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from State of Washington to London, Ontario

Our best Air Canada deals on State of Washington to London, Ontario flight tickets

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How to get the cheapest flight ticket from State of Washington to London, Ontario

Can stopping save me money on State of Washington to London, Ontario flights?

What is the cheapest airline that flies from Washington to London?

What airlines fly to London, Ontario?

How long does it take to fly to London, Ontario?

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Frequently asked questions about flying from Washington to London, Ontario

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An easier way to manage your London, Ontario trip

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List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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