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Cheap flights from Seattle to Toronto from $188

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Toronto departing on 9/7. 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

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 pm - 5:45 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 10m1 stop Calgary
WestJet Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$393WestJet
Tue, Sep 22 - Thu, Oct 1
WestJet Logo
7:35 pm - 5:45 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 10m1 stop Calgary
WestJet Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$393WestJet
Tue, Sep 22 - Sat, Oct 3
Multiple Airlines Logo
9:16 pm - 6:39 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
30h 23m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$408Multiple Airlines
Wed, Oct 14 - Sun, Oct 18
Multiple Airlines Logo
9:45 pm - 6:39 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
29h 54m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$414Multiple Airlines
Wed, Sep 16 - Thu, Oct 1
Alaska Airlines Logo
7:52 am - 3:45 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 53mnonstop
Alaska Airlines Logo
4:55 pm - 7:13 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 18mnonstop
$458Alaska Airlines
Sat, Sep 26 - Fri, Oct 2
Air Canada Logo
8:00 am - 3:50 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 50mnonstop
Air Canada Logo
6:25 pm - 8:59 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mnonstop
$462Air Canada
Sat, Oct 24 - Sat, Oct 31
Air Canada Logo
8:00 am - 3:50 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 50mnonstop
Air Canada Logo
6:45 pm - 9:04 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 19mnonstop
$462Air Canada
Sat, Oct 10 - Tue, Oct 13
Alaska Airlines Logo
7:52 am - 3:45 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 53mnonstop
Alaska Airlines Logo
4:55 pm - 7:13 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 18mnonstop
$470Alaska Airlines
Sat, Sep 26 - Wed, Sep 30
Delta Logo
9:36 am - 11:15 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
10h 39m2 stops Portland Minneapolis St Paul
Delta Logo
6:00 am - 12:42 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 42m2 stops Detroit Metropolitan Wayne County Portland
$524Delta
Sat, Oct 24 - Sat, Oct 31
Delta Logo
8:59 pm - 10:23 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
10h 24m2 stops Portland Atlanta Hartsfield-Jackson
Delta Logo
6:15 am - 12:37 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 22m2 stops Minneapolis St Paul Portland
$524Delta
Wed, Sep 23 - Sat, Sep 26

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WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
Sep 22
SEA7:35 pmSeattle/Tacoma Intl
7h 10m
1 stop
YYZ5:45 amToronto Pearson Intl
Oct 3
YYZ1:30 pmToronto Pearson Intl
8h 15m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$393
WestJet
Sep 25
SEA7:35 pmSeattle/Tacoma Intl
7h 10m
1 stop
YYZ5:45 amToronto Pearson Intl
Oct 1
YYZ1:30 pmToronto Pearson Intl
8h 15m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$395
WestJet
Sep 30
SEA7:35 pmSeattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 amToronto Pearson Intl
Oct 1
YYZ1:30 pmToronto Pearson Intl
8h 15m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$396

Delta flights from Seattle to Toronto Pearson Intl Airport

Our best Delta deals on Seattle to Toronto Pearson Intl Airport flight tickets
Delta
Aug 23
SEA8:59 pmSeattle/Tacoma Intl
8h 56m
2 stops
YYZ8:55 amToronto Pearson Intl
Sep 8
YYZ1:34 pmToronto Pearson Intl
13h 24m
1 stop
SEA11:58 pmSeattle/Tacoma Intl
$614
Delta
Aug 22
SEA9:45 pmSeattle/Tacoma Intl
11h 38m
1 stop
YYZ12:23 pmToronto Pearson Intl
Sep 8
YYZ11:38 amToronto Pearson Intl
12h 37m
1 stop
SEA9:15 pmSeattle/Tacoma Intl
$620
Delta
Aug 23
SEA8:59 pmSeattle/Tacoma Intl
8h 56m
2 stops
YYZ8:55 amToronto Pearson Intl
Aug 30
YYZ6:10 amToronto Pearson Intl
7h 21m
1 stop
SEA10:31 amSeattle/Tacoma Intl
$634

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Pearson 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 10, 2026.
Use the filters below to find and compare flights from Seattle to Toronto Pearson Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-5:45 am

1 stop7h 10m

Toronto Pearson Intl

Thu 10/1

1:30 pm-6:45 pm

1 stop8h 15m

$393

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-5:45 am

1 stop7h 10m

Toronto Pearson Intl

Sat 10/3

1:30 pm-6:45 pm

1 stop8h 15m

$393

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 10/14

9:16 pm-6:39 am

1 stop30h 23m

Toronto Pearson Intl

Sun 10/18

1:30 pm-6:45 pm

1 stop8h 15m

$408

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 9/16

9:45 pm-6:39 am

1 stop29h 54m

Toronto Pearson Intl

Thu 10/1

1:30 pm-6:45 pm

1 stop8h 15m

$414

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 9/26

7:52 am-3:45 pm

Nonstop4h 53m

Toronto Pearson Intl

Fri 10/2

4:55 pm-7:13 pm

Nonstop5h 18m

$458

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 10/24

8:00 am-3:50 pm

Nonstop4h 50m

Toronto Pearson Intl

Sat 10/31

6:25 pm-8:59 pm

Nonstop5h 34m

$462
Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 10/10

8:00 am-3:50 pm

Nonstop4h 50m

Toronto Pearson Intl

Tue 10/13

6:45 pm-9:04 pm

Nonstop5h 19m

$462

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 9/26

7:52 am-3:45 pm

Nonstop4h 53m

Toronto Pearson Intl

Wed 9/30

4:55 pm-7:13 pm

Nonstop5h 18m

$470

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 10/24

9:36 am-11:15 pm

2 stops10h 39m

Toronto Pearson Intl

Sat 10/31

6:00 am-12:42 pm

2 stops9h 42m

$524

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 9/23

8:59 pm-10:23 am

2 stops10h 24m

Toronto Pearson Intl

Sat 9/26

6:15 am-12:37 pm

2 stops9h 22m

$524

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 Seattle to Toronto Pearson 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 typical price of a round-trip flight between Seattle and Toronto Pearson Intl Airport?

Prices are currently typical for flights on this route.

Typical prices usually range from $385 to $812.
The lowest price recently found on this route was $393.

What is the cheapest month to fly to Toronto Pearson Intl Airport?

The cheapest month to fly to Toronto Pearson Intl Airport from Seattle is in January. Flight prices, which tend to average around $265, are often lower during this time because this is during the off-season. If you don’t want to visit Toronto Pearson Intl Airport in January, then you should wait until February to fly from Seattle, when ticket prices are also cheap, with an average price of $276.

What is the cheapest day to depart on your flight to Toronto Pearson Intl Airport?

The cheapest day to depart from Seattle to Toronto Pearson Intl Airport is on a Tuesday when prices can be found for as low as $516. The most expensive day to fly to Toronto Pearson Intl Airport is Sunday, with ticket prices averaging around $784.

What is the cheapest Seattle/Tacoma Intl to Toronto Pearson Intl flight route?

Fly from Seattle/Tacoma Intl to Toronto Pearson Intl for the best Seattle/Tacoma Intl - Toronto Pearson Intl flight prices

How far in advance should I book a flight from Seattle to Toronto Pearson Intl Airport?

You are more likely to see cheaper flights to Toronto Pearson Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto Pearson Intl Airport for around $388 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto Pearson Intl Airport from Seattle for as low as $318 on momondo.

What cabin class options are available on Seattle to Toronto Pearson Intl Airport flights?

There are 4 cabin classes available to choose from on Seattle to Toronto Pearson Intl Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Toronto Pearson Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Seattle to Toronto Pearson Intl Airport.

How have Seattle to Toronto Pearson Intl Airport flight prices changed over time?

As of August 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 12% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Toronto Pearson Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Toronto Pearson Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Toronto Pearson Intl Airport (SEA to YYZ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Toronto Pearson Intl Airport

Best Price Found

$316

Fastest flight time

4h 39m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is $316. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $496.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 39m
Direct flights go from Seattle to Toronto Pearson Intl Airport every day.
Search flight deals

Frequently asked questions about flying from Seattle to Toronto Pearson Intl Airport

  • How far is Seattle/Tacoma Intl to Toronto Pearson Intl by plane?

    Seattle/Tacoma Intl and Toronto Pearson Intl are 2053.4 mi apart from one another. Flights usually cover this in 4h 39m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport.

  • What documentation or ID do you need to fly to Toronto Pearson Intl Airport?

    The travel and health documents you'll need for your trip to Toronto Pearson 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 Pearson Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Toronto Pearson Intl Airport?

  • What is the most popular airline from Seattle to Toronto Pearson Intl Airport?

Best airlines flying from Seattle to Toronto Pearson Intl Airport

Compare and see reviews for airlines that fly from Seattle to Toronto Pearson Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $132Free CancellationRating
7.1
11,456 reviews
Search Air Canada flights
DeltaPriceFrom $142Free CancellationRating
7.8
8,497 reviews
Search Delta flights
WestJetPriceFrom $226Free CancellationRating
7.2
3,430 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $250Free CancellationRating
7.9
12,790 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
10,099 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 7 flights from Seattle to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $469, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as $250 round-trip. Alaska Airlines has been scored 7.9/10 in 12,794 reviews.

  • United Airlines Flights From Seattle to Toronto Pearson Intl Airport

    The best United Airlines deal for Seattle to Toronto Pearson Intl Airport flight tickets found on momondo in the last 72 hours was $277, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $489 round-trip. United Airlines operates 7 flights out of Seattle into Toronto Pearson Intl Airport in an average week, so prices vary by time and availability. 10,101 United Airlines reviews by users on momondo have scored the airline at 7.4/10.

Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Brampton
Niagara-on-the-Lake
Markham
Kitchener
Vaughan
Barrie
Collingwood
Burlington
Richmond Hill
Oakville
Orillia
Oshawa
Whitby
Peterborough
Cambridge
Guelph
Stratford
Milton

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Toronto. momondo saves you time and could save you money on your trip.

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

All flight searches from Seattle to Toronto on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Seattle to Toronto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Seattle to Toronto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Toronto Pearson Intl Airport trip

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