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Cheap flights from Washington to Toronto from $263

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 1/27. 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
7:05 am - 12:45 am
SEA
-
YKF
14h 40m1 stop
WestJet Logo
6:00 am - 8:28 pm
YKF
-
SEA
17h 28m1 stop
$275WestJet
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
3:10 pm - 5:28 am
SEA
-
YKF
11h 18m1 stop
Multiple Airlines Logo
7:05 am - 2:19 pm
YKF
-
SEA
10h 14m1 stop
$327Multiple Airlines
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
11:55 am - 5:28 am
SEA
-
YKF
14h 33m2 stops
Multiple Airlines Logo
7:05 am - 2:19 pm
YKF
-
SEA
10h 14m1 stop
$348Multiple Airlines
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
Multiple Airlines Logo
7:05 am - 2:19 pm
YKF
-
SEA
10h 14m1 stop
$456Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
WestJet Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
WestJet Logo
7:00 pm - 2:19 pm
YKF
-
SEA
22h 19m1 stop
$459WestJet
Wed, Feb 18 - Sat, Feb 21
WestJet Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
WestJet Logo
7:00 pm - 2:19 pm
YKF
-
SEA
22h 19m1 stop
$480WestJet
Wed, Feb 18 - Sat, Feb 21
WestJet Logo
7:05 am - 12:45 am
SEA
-
YKF
14h 40m1 stop
WestJet Logo
6:00 am - 8:28 pm
YKF
-
SEA
17h 28m1 stop
$493WestJet
Tue, Jun 2 - Tue, Jun 9
Multiple Airlines Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
Multiple Airlines Logo
7:05 am - 10:25 am
YKF
-
SEA
30h 20m2 stops
$494Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
3:10 pm - 5:29 am
SEA
-
YKF
11h 19m1 stop
Multiple Airlines Logo
7:05 am - 10:25 am
YKF
-
SEA
30h 20m3 stops
$522Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
WestJet Logo
7:05 am - 12:45 am
SEA
-
YKF
14h 40m1 stop
WestJet Logo
6:00 am - 8:28 pm
YKF
-
SEA
17h 28m1 stop
$525WestJet
Sat, May 23 - Mon, Jun 1

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 4
SEA7:05 amSeattle/Tacoma Intl
14h 40m
1 stop
YKF12:45 amToronto Region of Waterloo Intl
May 11
YKF6:00 amToronto Region of Waterloo Intl
17h 28m
1 stop
SEA8:28 pmSeattle/Tacoma Intl
$275
Find similar
WestJet
Feb 18
SEA3:10 pmSeattle/Tacoma Intl
11h 19m
1 stop
YKF5:29 amToronto Region of Waterloo Intl
Feb 21
YKF7:00 pmToronto Region of Waterloo Intl
22h 19m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$459
Find similar
WestJet
Feb 18
SEA3:10 pmSeattle/Tacoma Intl
11h 19m
1 stop
YKF5:29 amToronto Region of Waterloo Intl
Feb 21
YKF7:00 pmToronto Region of Waterloo Intl
22h 19m
1 stop
SEA2:19 pmSeattle/Tacoma Intl
$480
Find similar

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 December 15, 2025.
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

Mon 5/4

7:05 am-12:45 am

1 stop14h 40m

Toronto Region of Waterloo Intl

Mon 5/11

6:00 am-8:28 pm

1 stop17h 28m

$275

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 1/30

3:10 pm-5:28 am

1 stop11h 18m

Toronto Region of Waterloo Intl

Sun 2/1

7:05 am-2:19 pm

1 stop10h 14m

$327

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Fri 1/30

11:55 am-5:28 am

2 stops14h 33m

Toronto Region of Waterloo Intl

Sun 2/1

7:05 am-2:19 pm

1 stop10h 14m

$348

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 3/9

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Fri 3/13

7:05 am-2:19 pm

1 stop10h 14m

$456

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 2/18

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 2/21

7:00 pm-2:19 pm

1 stop22h 19m

$459

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 2/18

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Sat 2/21

7:00 pm-2:19 pm

1 stop22h 19m

$480

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Tue 6/2

7:05 am-12:45 am

1 stop14h 40m

Toronto Region of Waterloo Intl

Tue 6/9

6:00 am-8:28 pm

1 stop17h 28m

$493

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 3/9

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Fri 3/13

7:05 am-10:25 am

2 stops30h 20m

$494

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Mon 3/9

3:10 pm-5:29 am

1 stop11h 19m

Toronto Region of Waterloo Intl

Fri 3/13

7:05 am-10:25 am

3 stops30h 20m

$522

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sat 5/23

7:05 am-12:45 am

1 stop14h 40m

Toronto Region of Waterloo Intl

Mon 6/1

6:00 am-8:28 pm

1 stop17h 28m

$525

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 day to depart on your flight to Toronto Region of Waterloo Intl Airport?

According to our data, Wednesday is the cheapest day to fly to Toronto Region of Waterloo Intl Airport from State of Washington. The lowest ticket price found for a Wednesday departure recently was $482. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Toronto Region of Waterloo Intl Airport is Thursday, with ticket prices averaging around $643.

What is the cheapest time of day to depart on your flight to Toronto Region of Waterloo Intl Airport?

In the morning is the cheapest time of day to fly from State of Washington to Toronto Region of Waterloo Intl Airport when you can find flight prices for as low as $438. Flying to Toronto Region of Waterloo Intl Airport in the morning is an ideal time because this is during off-peak travel hours. Flights to Toronto Region of Waterloo Intl Airport are more costly at noon, with an average ticket price of $618. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

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

7h 40m

Direct flights

None
The fastest flight from State of Washington to Toronto Region of Waterloo Intl Airport takes 7h 40m
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.

An easier way to manage your Toronto Region of Waterloo Intl Airport trip

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