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

The average flight duration from State of Washington to London, Ontario depends on which airport you fly into and out of. Flying from Seattle to Toronto Pearson Intl Airport is 4h 40m on average, while flying from Spokane to Toronto Pearson Intl Airport is 8h 31m on average. Toronto Pearson Intl Airport is the most popular airport in London, Ontario.

Which airlines fly to London, Ontario?

Alaska Airlines, Air Canada and WestJet 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 64% of people opting to fly with this airline when travelling to London, Ontario. Keep in mind that there are 3 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to London Airport.

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

The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 659 Cheap Flights from Washington to London in 2026

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Round-trip

Cheap round-trip flights

Enter your travel dates to find the best prices.

10:30 a.m. - 5:20 a.m.

SEA

YXU

15h 50m

1 stop

6:10 a.m. - 6:45 p.m.

YXU

SEA

15h 35m

1 stop

C$ 684WestJet

Wed, 6 May - Wed, 13 May

10:30 a.m. - 5:20 a.m.

SEA

YXU

15h 50m

1 stop

6:10 a.m. - 6:45 p.m.

YXU

SEA

15h 35m

1 stop

C$ 685WestJet

Sun, 10 May - Sun, 17 May

7:35 p.m. - 5:20 a.m.

SEA

YXU

6h 45m

1 stop

2:40 p.m. - 9:40 a.m.

YXU

SEA

22h 00m

2 stops

C$ 689WestJet

Tue, 19 May - Fri, 5 Jun

7:35 p.m. - 5:20 a.m.

SEA

YXU

6h 45m

1 stop

5:55 p.m. - 6:45 p.m.

YXU

SEA

27h 50m

1 stop

C$ 694WestJet

Mon, 1 Jun - Fri, 5 Jun

7:35 p.m. - 5:20 a.m.

SEA

YXU

6h 45m

1 stop

2:40 p.m. - 9:40 a.m.

YXU

SEA

22h 00m

3 stops

C$ 763WestJet

Tue, 19 May - Fri, 5 Jun

5:50 a.m. - 9:38 p.m.

SEA

YXU

12h 48m

2 stops

3:30 p.m. - 9:08 p.m.

YXU

SEA

8h 38m

1 stop

C$ 771Air Canada

Mon, 1 Jun - Fri, 5 Jun

5:50 a.m. - 9:38 p.m.

SEA

YXU

12h 48m

2 stops

3:30 p.m. - 10:43 p.m.

YXU

SEA

10h 13m

2 stops

C$ 778Air Canada

Mon, 1 Jun - Fri, 5 Jun

2:55 p.m. - 11:43 a.m.

SEA

YXU

17h 48m

2 stops

3:30 p.m. - 9:08 p.m.

YXU

SEA

8h 38m

1 stop

C$ 797Air Canada

Mon, 1 Jun - Fri, 5 Jun

7:20 p.m. - 8:53 a.m.

SEA

YXU

10h 33m

2 stops

12:20 p.m. - 9:08 p.m.

YXU

SEA

11h 48m

1 stop

C$ 804Air Canada

Wed, 6 May - Wed, 13 May

10:30 a.m. - 5:20 a.m.

SEA

YXU

15h 50m

1 stop

2:40 p.m. - 6:45 p.m.

YXU

SEA

31h 05m

2 stops

C$ 826WestJet

Sun, 10 May - Sun, 17 May

WestJet flights from State of Washington to London, Ontario

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

WestJet

6 May

SEA10:30 a.m.Seattle/Tacoma Intl

15h 50m

1 stop

YXU5:20 a.m.London

13 May

YXU6:10 a.m.London

15h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 684

WestJet

10 May

SEA10:30 a.m.Seattle/Tacoma Intl

15h 50m

1 stop

YXU5:20 a.m.London

17 May

YXU6:10 a.m.London

15h 35m

1 stop

SEA6:45 p.m.Seattle/Tacoma Intl

C$ 685

WestJet

19 May

SEA7:35 p.m.Seattle/Tacoma Intl

6h 45m

1 stop

YXU5:20 a.m.London

5 Jun

YXU2:40 p.m.London

22h 00m

2 stops

SEA9:40 a.m.Seattle/Tacoma Intl

C$ 689

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

1 Jun

SEA5:50 a.m.Seattle/Tacoma Intl

12h 48m

2 stops

YXU9:38 p.m.London

5 Jun

YXU3:30 p.m.London

8h 38m

1 stop

SEA9:08 p.m.Seattle/Tacoma Intl

C$ 771

Air Canada

1 Jun

SEA5:50 a.m.Seattle/Tacoma Intl

12h 48m

2 stops

YXU9:38 p.m.London

5 Jun

YXU3:30 p.m.London

10h 13m

2 stops

SEA10:43 p.m.Seattle/Tacoma Intl

C$ 778

Air Canada

1 Jun

SEA2:55 p.m.Seattle/Tacoma Intl

17h 48m

2 stops

YXU11:43 a.m.London

5 Jun

YXU3:30 p.m.London

8h 38m

1 stop

SEA9:08 p.m.Seattle/Tacoma Intl

C$ 797

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

Wed 6/5

10:30 a.m.-5:20 a.m.

1 stop15h 50m

London

Wed 13/5

6:10 a.m.-6:45 p.m.

1 stop15h 35m

C$ 684

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 10/5

10:30 a.m.-5:20 a.m.

1 stop15h 50m

London

Sun 17/5

6:10 a.m.-6:45 p.m.

1 stop15h 35m

C$ 685

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Tue 19/5

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Fri 5/6

2:40 p.m.-9:40 a.m.

2 stops22h 00m

C$ 689

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 1/6

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Fri 5/6

5:55 p.m.-6:45 p.m.

1 stop27h 50m

C$ 694

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Tue 19/5

7:35 p.m.-5:20 a.m.

1 stop6h 45m

London

Fri 5/6

2:40 p.m.-9:40 a.m.

3 stops22h 00m

C$ 763

Quickest round-trip

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 1/6

5:50 a.m.-9:38 p.m.

2 stops12h 48m

London

Fri 5/6

3:30 p.m.-9:08 p.m.

1 stop8h 38m

C$ 771

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 1/6

5:50 a.m.-9:38 p.m.

2 stops12h 48m

London

Fri 5/6

3:30 p.m.-10:43 p.m.

2 stops10h 13m

C$ 778

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Mon 1/6

2:55 p.m.-11:43 a.m.

2 stops17h 48m

London

Fri 5/6

3:30 p.m.-9:08 p.m.

1 stop8h 38m

C$ 797

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Wed 6/5

7:20 p.m.-8:53 a.m.

2 stops10h 33m

London

Wed 13/5

12:20 p.m.-9:08 p.m.

1 stop11h 48m

C$ 804

SeattleLondon

SEA - YXU

SEAYXU

Seattle/Tacoma Intl

Sun 10/5

10:30 a.m.-5:20 a.m.

1 stop15h 50m

London

Sun 17/5

2:40 p.m.-6:45 p.m.

2 stops31h 05m

C$ 826

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 70% 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

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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to London Airport.
What documentation or ID do you need to fly to London Airport?
The necessary travel and health documents for your London Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted 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?

Finding the right flight to London from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Washington to London flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Washington.

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

If you are simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington and alert you when they change.