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 56% 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.

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 Pasco, and flying into London, Ontario, then you can expect flight times to average 4h 39m and 6h 59m, respectively.

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.

$227 Cheap Flights from Washington to London, Ontario in 2026

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.

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

6:10 am - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

15h 35m1 stop Calgary

$458WestJet

Thu, Sep 24 - Thu, Oct 1

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

5:55 pm - 9:42 amYXU London-SEA Seattle/Tacoma Intl

42h 47m2 stops Calgary Las Vegas Harry Reid Intl

$576Multiple Airlines

Thu, Sep 24 - Thu, Oct 1

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

5:55 pm - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

27h 50m1 stop Calgary

$587WestJet

Thu, Oct 1 - Mon, Oct 5

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

5:55 pm - 6:45 pmYXU London-SEA Seattle/Tacoma Intl

27h 50m1 stop Calgary

$588WestJet

Thu, Oct 1 - Mon, Oct 5

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

5:55 pm - 9:40 amYXU London-SEA Seattle/Tacoma Intl

18h 45m1 stop Calgary

$598WestJet

Wed, Oct 7 - Sun, Oct 11

7:15 pm - 9:20 amSEA Seattle/Tacoma Intl-YXU London

11h 05m2 stops Vancouver Intl Toronto Pearson Intl

10:05 am - 6:32 pmYXU London-SEA Seattle/Tacoma Intl

11h 27m2 stops Toronto Pearson Intl Vancouver Intl

$636Air Canada

Thu, Sep 24 - Thu, Oct 1

7:35 pm - 5:20 amSEA Seattle/Tacoma Intl-YXU London

6h 45m1 stop Calgary

5:55 pm - 9:40 amYXU London-SEA Seattle/Tacoma Intl

18h 45m1 stop Calgary

$678WestJet

Sun, Sep 20 - Sun, Sep 27

5:40 am - 9:40 pmSEA Seattle/Tacoma Intl-YXU London

13h 00m2 stops Vancouver Intl Toronto Pearson Intl

3:30 pm - 9:04 pmYXU London-SEA Seattle/Tacoma Intl

8h 34m1 stop Toronto Pearson Intl

$751Air Canada

Thu, Oct 1 - Mon, Oct 5

7:20 pm - 9:20 amSEA Seattle/Tacoma Intl-YXU London

11h 00m2 stops Vancouver Intl Toronto Pearson Intl

5:40 am - 2:22 pmYXU London-SEA Seattle/Tacoma Intl

11h 42m2 stops Toronto Pearson Intl Vancouver Intl

$756Air Canada

Thu, Oct 1 - Mon, Oct 5

7:20 pm - 9:20 amSEA Seattle/Tacoma Intl-YXU London

11h 00m2 stops Vancouver Intl Toronto Pearson Intl

5:40 am - 2:22 pmYXU London-SEA Seattle/Tacoma Intl

11h 42m2 stops Toronto Pearson Intl Vancouver Intl

$757Air Canada

Thu, Oct 1 - Mon, Oct 5

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United Airlines flights from State of Washington to London, Ontario

Our best United Airlines deals on State of Washington to London, Ontario flight tickets

United Airlines

Sep 20

SEA11:00 pmSeattle/Tacoma Intl

12h 50m

2 stops

YXU2:50 pmLondon

Sep 27

YXU3:30 pmLondon

8h 34m

1 stop

SEA9:04 pmSeattle/Tacoma Intl

$927

United Airlines

Sep 20

SEA11:00 pmSeattle/Tacoma Intl

12h 50m

2 stops

YXU2:50 pmLondon

Sep 27

YXU3:30 pmLondon

12h 45m

2 stops

SEA1:15 amSeattle/Tacoma Intl

$943

WestJet flights from State of Washington to London, Ontario

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

WestJet

Sep 24

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Oct 1

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$458

WestJet

Oct 1

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Oct 5

YXU5:55 pmLondon

27h 50m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$587

WestJet

Oct 1

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Oct 5

YXU5:55 pmLondon

27h 50m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$588

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

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 9/24

7:35 pm-5:20 am

1 stop6h 45m

London

Thu 10/1

6:10 am-6:45 pm

1 stop15h 35m

$458

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 9/24

7:35 pm-5:20 am

1 stop6h 45m

London

Thu 10/1

5:55 pm-9:42 am

2 stops42h 47m

$576

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 10/1

7:35 pm-5:20 am

1 stop6h 45m

London

Mon 10/5

5:55 pm-6:45 pm

1 stop27h 50m

$587

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 10/1

7:35 pm-5:20 am

1 stop6h 45m

London

Mon 10/5

5:55 pm-6:45 pm

1 stop27h 50m

$588

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Wed 10/7

7:35 pm-5:20 am

1 stop6h 45m

London

Sun 10/11

5:55 pm-9:40 am

1 stop18h 45m

$598

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 9/24

7:15 pm-9:20 am

2 stops11h 05m

London

Thu 10/1

10:05 am-6:32 pm

2 stops11h 27m

$636

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Sun 9/20

7:35 pm-5:20 am

1 stop6h 45m

London

Sun 9/27

5:55 pm-9:40 am

1 stop18h 45m

$678

Quickest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 10/1

5:40 am-9:40 pm

2 stops13h 00m

London

Mon 10/5

3:30 pm-9:04 pm

1 stop8h 34m

$751

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 10/1

7:20 pm-9:20 am

2 stops11h 00m

London

Mon 10/5

5:40 am-2:22 pm

2 stops11h 42m

$756

SeattleLondon

SEA Seattle/Tacoma Intl - YXU London

SEAYXU

Seattle/Tacoma Intl

Thu 10/1

7:20 pm-9:20 am

2 stops11h 00m

London

Mon 10/5

5:40 am-2:22 pm

2 stops11h 42m

$757

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 33% 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

Fastest flight time	6h 45m
Direct flights	None

The fastest flight from State of Washington to London, Ontario takes 6h 45m

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.

Grand Bend

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 $227

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 9/22. 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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United Airlines flights from State of Washington to London, Ontario

Our best United Airlines deals on State of Washington to London, Ontario flight tickets

WestJet flights from State of Washington to London, Ontario

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

momondo Fare Finder

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

See travel insights to London from

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?

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

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Frequently asked questions about flying from Washington to London, Ontario

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Why use momondo?

An easier way to manage your London, Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Daily price changes in your inbox - only with Price Alerts.

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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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