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Cheap flights from Washington to Toronto from $206

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 Toronto departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Washington to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
$442WestJet
Mon, Sep 21 - Mon, Sep 28
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 6:45 pmYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
$454WestJet
Fri, Sep 4 - Fri, Sep 11
Multiple Airlines Logo
7:35 pm - 3:00 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
16h 25m1 stop Calgary
Multiple Airlines Logo
8:40 pm - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
$455Multiple Airlines
Wed, Sep 16 - Thu, Oct 1
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
$456WestJet
Fri, Sep 4 - Mon, Sep 7
Multiple Airlines Logo
7:35 pm - 3:00 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
16h 25m1 stop Calgary
Multiple Airlines Logo
6:05 am - 6:32 pmYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
15h 27m2 stops Calgary Vancouver Intl
$457Multiple Airlines
Fri, Sep 25 - Fri, Oct 2
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
$461WestJet
Fri, Sep 4 - Fri, Sep 11
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
16h 00m1 stop Calgary
$467WestJet
Sat, Sep 19 - Fri, Oct 2
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 6:45 pmYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
$469WestJet
Fri, Sep 18 - Mon, Sep 21
WestJet Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
WestJet Logo
8:40 pm - 6:45 pmYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
25h 05m1 stop Calgary
$470WestJet
Fri, Sep 18 - Mon, Sep 21
Multiple Airlines Logo
7:35 pm - 7:50 pmSEA  Seattle/Tacoma Intl-YKF Toronto Region of Waterloo Intl
21h 15m1 stop Calgary
Multiple Airlines Logo
6:10 am - 9:40 amYKF  Toronto Region of Waterloo Intl-SEA Seattle/Tacoma Intl
30h 30m3 stops Edmonton Kelowna Calgary
$474Multiple Airlines
Fri, Sep 4 - Sun, Sep 13

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WestJet flights from State of Washington to Toronto Region of Waterloo Intl Airport

Our best WestJet deals on State of Washington to Toronto Region of Waterloo Intl Airport flight tickets
WestJet
Sep 21
SEA7:35 pmSeattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 pmToronto Region of Waterloo Intl
Sep 28
YKF8:40 pmToronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$442
WestJet
Sep 4
SEA7:35 pmSeattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 pmToronto Region of Waterloo Intl
Sep 11
YKF8:40 pmToronto Region of Waterloo Intl
25h 05m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$454
WestJet
Sep 4
SEA7:35 pmSeattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 pmToronto Region of Waterloo Intl
Sep 7
YKF8:40 pmToronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$456

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Toronto Region of Waterloo Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Washington to Toronto Region of Waterloo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Mon 9/21

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 9/28

8:40 pm-9:40 am

1 stop16h 00m

$442

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Fri 9/11

8:40 pm-6:45 pm

1 stop25h 05m

$454

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Wed 9/16

7:35 pm-3:00 pm

1 stop16h 25m

Toronto Region of Waterloo Intl

Thu 10/1

8:40 pm-9:40 am

1 stop16h 00m

$455

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 9/7

8:40 pm-9:40 am

1 stop16h 00m

$456
Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/25

7:35 pm-3:00 pm

1 stop16h 25m

Toronto Region of Waterloo Intl

Fri 10/2

6:05 am-6:32 pm

2 stops15h 27m

$457

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Fri 9/11

8:40 pm-9:40 am

1 stop16h 00m

$461

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Sat 9/19

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Fri 10/2

8:40 pm-9:40 am

1 stop16h 00m

$467

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/18

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 9/21

8:40 pm-6:45 pm

1 stop25h 05m

$469

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/18

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 9/21

8:40 pm-6:45 pm

1 stop25h 05m

$470

SeattleToronto

SEA Seattle/Tacoma Intl - YKF Toronto Region of Waterloo Intl

SEAYKF

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 9/13

6:10 am-9:40 am

3 stops30h 30m

$474

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Toronto from

How to get the cheapest flight ticket from State of Washington to Toronto Region of Waterloo Intl Airport

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

What is the cheapest airline that flies from Washington to Toronto Region of Waterloo Intl?

WestJet is the most popular carrier operating from Washington to Toronto Region of Waterloo Intl

Cheap State of Washington to Toronto Region of Waterloo Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Toronto Region of Waterloo Intl Airport

Fastest flight time

10h 45m

Direct flights

None
The fastest flight from State of Washington to Toronto Region of Waterloo Intl Airport takes 10h 45m
There are no direct flights from State of Washington to Toronto Region of Waterloo Intl Airport. There are no popular flight routes from State of Washington to Toronto Region of Waterloo Intl Airport.
Search flight deals

Frequently asked questions about flying from Washington to Toronto Region of Waterloo Intl Airport

  • When did momondo last update prices for flights from Washington to Toronto Region of Waterloo Intl Airport?

    Prices for flights from Washington to Toronto Region of Waterloo Intl Airport refresh daily.

  • How old do you have to be to fly from Washington to Toronto Region of Waterloo Intl 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 Toronto Region of Waterloo Intl Airport.

  • What documentation or ID do you need to fly to Toronto Region of Waterloo Intl Airport?

    The travel and health documents you'll need for your trip to Toronto Region of Waterloo Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Toronto Region of Waterloo Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Sauble Beach
Port Elgin
Southampton

Why use momondo?

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

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

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

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

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

momondo helps you find the best flight between Washington and Toronto by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Price alerts on flights to Toronto from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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