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.

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 Bellingham, and flying into London, Ontario, then you can expect flight times to average 4h 39m and 7h 29m, respectively.

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

WestJet is the most popular carrier operating from Washington to London

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.

$176 Cheap Flights from Washington to London, Ontario in 2026

Find the cheapest flights from Washington to London

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

$388WestJet

Wed, Sep 23 - Wed, Oct 7

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

8:40 pm - 9:40 am

YXU

SEA

16h 00m

1 stop

$434WestJet

Fri, Jul 17 - Fri, Aug 7

7:00 am - 4:45 pm

SEA

YXU

6h 45m

1 stop

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

$440WestJet

Wed, Jul 22 - Thu, Aug 20

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

$443WestJet

Fri, Jul 24 - Sat, Aug 22

7:00 am - 4:45 pm

SEA

YXU

6h 45m

1 stop

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

$449WestJet

Wed, Jul 22 - Sat, Aug 22

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

5:55 pm - 6:45 pm

YXU

SEA

27h 50m

1 stop

$450WestJet

Mon, Jul 13 - Wed, Jul 22

7:00 am - 4:45 pm

SEA

YXU

6h 45m

1 stop

5:55 pm - 9:40 am

YXU

SEA

18h 45m

1 stop

$458WestJet

Sat, Jul 11 - Mon, Jul 27

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

5:55 pm - 6:45 pm

YXU

SEA

27h 50m

1 stop

$459WestJet

Fri, Jul 10 - Wed, Jul 22

7:00 am - 4:45 pm

SEA

YXU

6h 45m

1 stop

8:40 pm - 9:40 am

YXU

SEA

16h 00m

1 stop

$461WestJet

Thu, Jul 16 - Thu, Aug 6

10:30 am - 4:45 pm

SEA

YXU

27h 15m

1 stop

8:40 pm - 9:40 am

YXU

SEA

16h 00m

1 stop

$464WestJet

Sat, Jul 25 - Fri, Aug 14

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WestJet flights from State of Washington to London, Ontario

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

WestJet

Sep 23

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Oct 7

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$388

WestJet

Jul 22

SEA7:00 amSeattle/Tacoma Intl

6h 45m

1 stop

YXU4:45 pmLondon

Aug 21

YXU8:40 pmLondon

16h 00m

1 stop

SEA9:40 amSeattle/Tacoma Intl

$440

WestJet

Jul 24

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Aug 22

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$443

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

Jul 9

SEA5:45 amSeattle/Tacoma Intl

11h 47m

2 stops

YXU8:32 pmLondon

Jul 27

YXU3:30 pmLondon

8h 37m

1 stop

SEA9:07 pmSeattle/Tacoma Intl

$658

Air Canada

Jul 9

SEA7:20 pmSeattle/Tacoma Intl

10h 57m

2 stops

YXU9:17 amLondon

Jul 23

YXU3:30 pmLondon

10h 12m

2 stops

SEA10:42 pmSeattle/Tacoma Intl

$663

Air Canada

Jul 10

SEA8:00 amSeattle/Tacoma Intl

6h 42m

1 stop

YXU5:42 pmLondon

Jul 23

YXU6:20 pmLondon

18h 47m

2 stops

SEA10:07 amSeattle/Tacoma Intl

$677

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 - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 9/23

7:35 pm-5:20 am

1 stop6h 45m

London

Wed 10/7

6:10 am-6:45 pm

1 stop15h 35m

$388

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 7/17

7:35 pm-5:20 am

1 stop6h 45m

London

Fri 8/7

8:40 pm-9:40 am

1 stop16h 00m

$434

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 7/22

7:00 am-4:45 pm

1 stop6h 45m

London

Thu 8/20

6:10 am-6:45 pm

1 stop15h 35m

$440

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 7/24

7:35 pm-5:20 am

1 stop6h 45m

London

Sat 8/22

6:10 am-6:45 pm

1 stop15h 35m

$443

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 7/22

7:00 am-4:45 pm

1 stop6h 45m

London

Sat 8/22

6:10 am-6:45 pm

1 stop15h 35m

$449

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 7/13

7:35 pm-5:20 am

1 stop6h 45m

London

Wed 7/22

5:55 pm-6:45 pm

1 stop27h 50m

$450

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sat 7/11

7:00 am-4:45 pm

1 stop6h 45m

London

Mon 7/27

5:55 pm-9:40 am

1 stop18h 45m

$458

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Fri 7/10

7:35 pm-5:20 am

1 stop6h 45m

London

Wed 7/22

5:55 pm-6:45 pm

1 stop27h 50m

$459

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Thu 7/16

7:00 am-4:45 pm

1 stop6h 45m

London

Thu 8/6

8:40 pm-9:40 am

1 stop16h 00m

$461

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sat 7/25

10:30 am-4:45 pm

1 stop27h 15m

London

Fri 8/14

8:40 pm-9:40 am

1 stop16h 00m

$464

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

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Other information

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

You could potentially save up to 30% 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 42m
Direct flights	None

The fastest flight from State of Washington to London, Ontario takes 6h 42m

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.

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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 $176

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 10/16. 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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WestJet flights from State of Washington to London, Ontario

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

Air Canada flights from State of Washington to London, Ontario

Our best Air Canada 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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Why use momondo?

An easier way to manage your London, Ontario trip

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