What airlines fly to London, Ontario?

Alaska Airlines, Air Canada and Delta 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 57% 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 Pasco, and flying into London, Ontario, then you can expect flight times to average 4h 40m and 7h, 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 many operators does momondo search for flights from Washington to London Airport?

As of March 2026, there is 1 operator available to choose from for flights from Washington to London Airport.

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.

$497 Cheap Flights from Washington to London in 2026

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10:30 am - 5:20 am

SEA

YXU

15h 50m

1 stop

6:10 am - 6:45 pm

YXU

SEA

15h 35m

1 stop

$497WestJet

Sun, May 10 - Sun, May 17

7:35 pm - 5:20 am

SEA

YXU

6h 45m

1 stop

5:55 pm - 6:45 pm

YXU

SEA

27h 50m

1 stop

$503WestJet

Mon, Jun 1 - Fri, Jun 5

5:50 am - 9:38 pm

SEA

YXU

12h 48m

2 stops

3:30 pm - 9:08 pm

YXU

SEA

8h 38m

1 stop

$559Air Canada

Mon, Jun 1 - Fri, Jun 5

5:50 am - 9:38 pm

SEA

YXU

12h 48m

2 stops

3:30 pm - 10:43 pm

YXU

SEA

10h 13m

2 stops

$564Air Canada

Mon, Jun 1 - Fri, Jun 5

8:00 am - 9:38 pm

SEA

YXU

10h 38m

1 stop

3:30 pm - 9:08 pm

YXU

SEA

8h 38m

1 stop

$578Air Canada

Mon, Jun 1 - Fri, Jun 5

5:50 am - 9:38 pm

SEA

YXU

12h 48m

2 stops

5:10 am - 6:30 pm

YXU

SEA

16h 20m

2 stops

$583Air Canada

Mon, Jun 1 - Fri, Jun 5

10:30 am - 5:20 am

SEA

YXU

15h 50m

1 stop

2:40 pm - 6:45 pm

YXU

SEA

31h 05m

2 stops

$599WestJet

Sun, May 10 - Sun, May 17

3:00 pm - 8:55 am

SEA

YXU

14h 55m

2 stops

6:20 pm - 9:52 am

YXU

SEA

18h 32m

2 stops

$602Air Canada

Wed, Jul 8 - Sun, Jul 12

5:50 am - 9:38 pm

SEA

YXU

12h 48m

2 stops

9:30 am - 6:30 pm

YXU

SEA

12h 00m

2 stops

$705Air Canada

Sun, May 10 - Sun, May 17

WestJet flights from State of Washington to London, Ontario

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

WestJet

May 10

SEA10:30 amSeattle/Tacoma Intl

15h 50m

1 stop

YXU5:20 amLondon

May 17

YXU6:10 amLondon

15h 35m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$497

WestJet

Jun 1

SEA7:35 pmSeattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 amLondon

Jun 5

YXU5:55 pmLondon

27h 50m

1 stop

SEA6:45 pmSeattle/Tacoma Intl

$503

WestJet

May 10

SEA10:30 amSeattle/Tacoma Intl

15h 50m

1 stop

YXU5:20 amLondon

May 17

YXU2:40 pmLondon

31h 05m

2 stops

SEA6:45 pmSeattle/Tacoma Intl

$599

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

Jun 1

SEA5:50 amSeattle/Tacoma Intl

12h 48m

2 stops

YXU9:38 pmLondon

Jun 5

YXU3:30 pmLondon

8h 38m

1 stop

SEA9:08 pmSeattle/Tacoma Intl

$559

Air Canada

Jun 1

SEA5:50 amSeattle/Tacoma Intl

12h 48m

2 stops

YXU9:38 pmLondon

Jun 5

YXU3:30 pmLondon

10h 13m

2 stops

SEA10:43 pmSeattle/Tacoma Intl

$564

Air Canada

Jun 1

SEA8:00 amSeattle/Tacoma Intl

10h 38m

1 stop

YXU9:38 pmLondon

Jun 5

YXU3:30 pmLondon

8h 38m

1 stop

SEA9:08 pmSeattle/Tacoma Intl

$578

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 - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 5/10

10:30 am-5:20 am

1 stop15h 50m

London

Sun 5/17

6:10 am-6:45 pm

1 stop15h 35m

$497

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 6/1

7:35 pm-5:20 am

1 stop6h 45m

London

Fri 6/5

5:55 pm-6:45 pm

1 stop27h 50m

$503

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 6/1

5:50 am-9:38 pm

2 stops12h 48m

London

Fri 6/5

3:30 pm-9:08 pm

1 stop8h 38m

$559

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 6/1

5:50 am-9:38 pm

2 stops12h 48m

London

Fri 6/5

3:30 pm-10:43 pm

2 stops10h 13m

$564

Quickest round-trip

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 6/1

8:00 am-9:38 pm

1 stop10h 38m

London

Fri 6/5

3:30 pm-9:08 pm

1 stop8h 38m

$578

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 6/1

5:50 am-9:38 pm

2 stops12h 48m

London

Fri 6/5

5:10 am-6:30 pm

2 stops16h 20m

$583

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 5/10

10:30 am-5:20 am

1 stop15h 50m

London

Sun 5/17

2:40 pm-6:45 pm

2 stops31h 05m

$599

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 7/8

3:00 pm-8:55 am

2 stops14h 55m

London

Sun 7/12

6:20 pm-9:52 am

2 stops18h 32m

$602

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 5/10

5:50 am-9:38 pm

2 stops12h 48m

London

Sun 5/17

9:30 am-6:30 pm

2 stops12h 00m

$705

Flights are sorted by cheapest round-trip flights first.

Sorted 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 66% 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	11h 38m
Direct flights	None

The fastest flight from State of Washington to London, Ontario takes 11h 38m

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

When did momondo last update prices for flights from Washington to London Airport?
Prices for flights from Washington to London Airport refresh daily.
How many operators does momondo search for flights from Washington to London Airport?
As of March 2026, there is 1 operator available to choose from for flights from Washington to London Airport.
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.

Best airlines flying from State of Washington to London, Ontario

Compare and see reviews for airlines that fly from State of Washington to London, Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $460	Free Cancellation	Rating 7.1 10,843 reviews		Search Air Canada flights

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 $497

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to London departing on 5/10. 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 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

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

Fastest flight time

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Best airlines flying from State of Washington to London, Ontario

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Traveling to a place near London?

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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