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Cheap flights from Washington to Toronto from $143

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 3/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 pm - 7:50 pm
SEA
-
YKF
21h 15m
1 stop
WestJet Logo
8:40 pm - 6:45 pm
YKF
-
SEA
25h 05m
1 stop
$314WestJet
Sat, May 9 - Sun, May 17
WestJet Logo
7:35 pm - 7:50 pm
SEA
-
YKF
21h 15m
1 stop
WestJet Logo
8:40 pm - 6:45 pm
YKF
-
SEA
25h 05m
1 stop
$315WestJet
Tue, May 12 - Sun, May 17
WestJet Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m
1 stop
WestJet Logo
8:40 pm - 9:40 am
YKF
-
SEA
16h 00m
1 stop
$354WestJet
Wed, Apr 8 - Wed, Apr 29
WestJet Logo
7:35 pm - 7:50 pm
SEA
-
YKF
21h 15m
1 stop
WestJet Logo
8:40 pm - 9:40 am
YKF
-
SEA
16h 00m
1 stop
$358WestJet
Thu, Jun 4 - Thu, Jun 11
WestJet Logo
7:00 am - 7:50 pm
SEA
-
YKF
9h 50m
1 stop
WestJet Logo
8:40 pm - 9:40 am
YKF
-
SEA
16h 00m
1 stop
$380WestJet
Tue, Jun 16 - Fri, Jun 19
WestJet Logo
7:00 am - 7:50 pm
SEA
-
YKF
9h 50m
1 stop
WestJet Logo
8:40 pm - 9:00 pm
YKF
-
SEA
27h 20m
1 stop
$381WestJet
Tue, Jun 16 - Thu, Jun 18
WestJet Logo
7:35 pm - 7:50 pm
SEA
-
YKF
21h 15m
1 stop
WestJet Logo
6:00 am - 1:08 pm
YKF
-
SEA
10h 08m
1 stop
$389WestJet
Thu, Jun 4 - Mon, Jun 22
WestJet Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m
1 stop
WestJet Logo
7:00 pm - 2:19 pm
YKF
-
SEA
22h 19m
1 stop
$390WestJet
Wed, Apr 8 - Sat, Apr 11
Multiple Airlines Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m
1 stop
Multiple Airlines Logo
6:05 am - 2:19 pm
YKF
-
SEA
11h 14m
1 stop
$395Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
WestJet Logo
7:00 am - 7:50 pm
SEA
-
YKF
9h 50m
1 stop
WestJet Logo
6:00 am - 1:08 pm
YKF
-
SEA
10h 08m
1 stop
$397WestJet
Wed, Jun 17 - Tue, Jun 23

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
May 12
SEA7:35 pmSeattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 pmToronto Region of Waterloo Intl
May 17
YKF8:40 pmToronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$314
WestJet
May 12
SEA7:35 pmSeattle/Tacoma Intl
21h 15m
1 stop
YKF7:50 pmToronto Region of Waterloo Intl
May 17
YKF8:40 pmToronto Region of Waterloo Intl
25h 05m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$315
WestJet
Apr 8
SEA3:10 pmSeattle/Tacoma Intl
11h 19m
1 stop
YKF5:29 amToronto Region of Waterloo Intl
Apr 29
YKF8:40 pmToronto Region of Waterloo Intl
16h 00m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$354

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 February 8, 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

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 5/9

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 5/17

8:40 pm-6:45 pm

1 stop25h 05m

$314

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 5/12

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Sun 5/17

8:40 pm-6:45 pm

1 stop25h 05m

$315

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 4/8

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Wed 4/29

8:40 pm-9:40 am

1 stop16h 00m

$354

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 6/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Thu 6/11

8:40 pm-9:40 am

1 stop16h 00m

$358

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 6/16

7:00 am-7:50 pm

1 stop9h 50m

Toronto Region of Waterloo Intl

Fri 6/19

8:40 pm-9:40 am

1 stop16h 00m

$380

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 6/16

7:00 am-7:50 pm

1 stop9h 50m

Toronto Region of Waterloo Intl

Thu 6/18

8:40 pm-9:00 pm

1 stop27h 20m

$381

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Thu 6/4

7:35 pm-7:50 pm

1 stop21h 15m

Toronto Region of Waterloo Intl

Mon 6/22

6:00 am-1:08 pm

1 stop10h 08m

$389

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 4/8

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 4/11

7:00 pm-2:19 pm

1 stop22h 19m

$390

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 4/15

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sun 4/19

6:05 am-2:19 pm

1 stop11h 14m

$395

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 6/17

7:00 am-7:50 pm

1 stop9h 50m

Toronto Region of Waterloo Intl

Tue 6/23

6:00 am-1:08 pm

1 stop10h 08m

$397

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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

8h 47m

Direct flights

None
The fastest flight from State of Washington to Toronto Region of Waterloo Intl Airport takes 8h 47m
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.
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  • 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
Southampton
Port Elgin

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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