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Cheap flights from Seattle to Toronto from $106

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 3/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:10 pm - 6:58 am
SEA
-
YYZ
12h 48m2 stops
Multiple Airlines Logo
4:45 pm - 7:05 pm
YYZ
-
SEA
5h 20mnonstop
$250Multiple Airlines
Tue, Mar 17 - Mon, Mar 23
WestJet Logo
3:10 pm - 5:58 am
SEA
-
YYZ
11h 48m2 stops
WestJet Logo
10:15 pm - 10:22 am
YYZ
-
SEA
15h 07m2 stops
$251WestJet
Thu, Jan 8 - Sat, Jan 10
Air Canada Logo
8:10 am - 3:53 pm
SEA
-
YYZ
4h 43mnonstop
Air Canada Logo
7:50 pm - 10:16 pm
YYZ
-
SEA
5h 26mnonstop
$252Air Canada
Tue, Jan 6 - Wed, Jan 14
Multiple Airlines Logo
3:10 pm - 5:58 am
SEA
-
YYZ
11h 48m2 stops
Multiple Airlines Logo
8:00 am - 7:16 pm
YYZ
-
SEA
14h 16m2 stops
$253Multiple Airlines
Sun, Jan 11 - Sun, Jan 18
Alaska Airlines Logo
7:55 am - 3:35 pm
SEA
-
YYZ
4h 40mnonstop
Alaska Airlines Logo
4:45 pm - 7:17 pm
YYZ
-
SEA
5h 32mnonstop
$254Alaska Airlines
Fri, Jan 30 - Sun, Feb 1
Multiple Airlines Logo
7:55 am - 3:35 pm
SEA
-
YYZ
4h 40mnonstop
Multiple Airlines Logo
10:15 pm - 10:22 am
YYZ
-
SEA
15h 07m2 stops
$255Multiple Airlines
Thu, Jan 8 - Sat, Jan 10
WestJet Logo
11:55 am - 6:58 am
SEA
-
YYZ
16h 03m1 stop
WestJet Logo
8:45 pm - 10:22 am
YYZ
-
SEA
16h 37m1 stop
$256WestJet
Fri, Jan 23 - Thu, Jan 29
Air Canada Logo
8:10 am - 3:53 pm
SEA
-
YYZ
4h 43mnonstop
Air Canada Logo
9:00 am - 2:31 pm
YYZ
-
SEA
8h 31m1 stop
$257Air Canada
Wed, Jan 7 - Sat, Jan 10
Multiple Airlines Logo
3:10 pm - 6:13 am
SEA
-
YYZ
12h 03m1 stop
Multiple Airlines Logo
4:45 pm - 7:17 pm
YYZ
-
SEA
5h 32mnonstop
$258Multiple Airlines
Sun, Jan 11 - Wed, Jan 14
Multiple Airlines Logo
7:55 am - 3:35 pm
SEA
-
YYZ
4h 40mnonstop
Multiple Airlines Logo
6:30 am - 2:20 pm
YYZ
-
SEA
10h 50m1 stop
$259Multiple Airlines
Wed, Jan 7 - Thu, Jan 8

Alaska Airlines flights from Seattle to Toronto Pearson Intl Airport

Our best Alaska Airlines deals on Seattle to Toronto Pearson Intl Airport flight tickets
Alaska Airlines
Jan 30
SEA7:55 amSeattle/Tacoma Intl
4h 40m
YYZ3:35 pmToronto Pearson Intl
Feb 1
YYZ4:45 pmToronto Pearson Intl
5h 32m
SEA7:17 pmSeattle/Tacoma Intl
$254
Find similar
Alaska Airlines
Dec 27
SEA8:00 amSeattle/Tacoma Intl
4h 35m
YYZ3:35 pmToronto Pearson Intl
Jan 6
YYZ4:45 pmToronto Pearson Intl
5h 26m
SEA7:11 pmSeattle/Tacoma Intl
$619
Find similar
Alaska Airlines
Dec 27
SEA8:00 amSeattle/Tacoma Intl
4h 35m
YYZ3:35 pmToronto Pearson Intl
Jan 6
YYZ11:30 amToronto Pearson Intl
9h 46m
1 stop
SEA6:16 pmSeattle/Tacoma Intl
$655
Find similar

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
Jan 8
SEA3:10 pmSeattle/Tacoma Intl
11h 48m
2 stops
YYZ5:58 amToronto Pearson Intl
Jan 10
YYZ10:15 pmToronto Pearson Intl
15h 07m
2 stops
SEA10:22 amSeattle/Tacoma Intl
$251
Find similar
WestJet
Jan 23
SEA11:55 amSeattle/Tacoma Intl
16h 03m
1 stop
YYZ6:58 amToronto Pearson Intl
Jan 29
YYZ8:45 pmToronto Pearson Intl
16h 37m
1 stop
SEA10:22 amSeattle/Tacoma Intl
$256
Find similar
WestJet
Mar 5
SEA3:10 pmSeattle/Tacoma Intl
11h 48m
2 stops
YYZ5:58 amToronto Pearson Intl
Mar 9
YYZ10:15 pmToronto Pearson Intl
19h 04m
2 stops
SEA2:19 pmSeattle/Tacoma Intl
$260
Find similar

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 December 15, 2025.
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

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 3/17

3:10 pm-6:58 am

2 stops12h 48m

Toronto Pearson Intl

Mon 3/23

4:45 pm-7:05 pm

Nonstop5h 20m

$250

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 1/8

3:10 pm-5:58 am

2 stops11h 48m

Toronto Pearson Intl

Sat 1/10

10:15 pm-10:22 am

2 stops15h 07m

$251

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 1/6

8:10 am-3:53 pm

Nonstop4h 43m

Toronto Pearson Intl

Wed 1/14

7:50 pm-10:16 pm

Nonstop5h 26m

$252

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 1/11

3:10 pm-5:58 am

2 stops11h 48m

Toronto Pearson Intl

Sun 1/18

8:00 am-7:16 pm

2 stops14h 16m

$253

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/30

7:55 am-3:35 pm

Nonstop4h 40m

Toronto Pearson Intl

Sun 2/1

4:45 pm-7:17 pm

Nonstop5h 32m

$254

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 1/8

7:55 am-3:35 pm

Nonstop4h 40m

Toronto Pearson Intl

Sat 1/10

10:15 pm-10:22 am

2 stops15h 07m

$255

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 1/23

11:55 am-6:58 am

1 stop16h 03m

Toronto Pearson Intl

Thu 1/29

8:45 pm-10:22 am

1 stop16h 37m

$256

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 1/7

8:10 am-3:53 pm

Nonstop4h 43m

Toronto Pearson Intl

Sat 1/10

9:00 am-2:31 pm

1 stop8h 31m

$257

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 1/11

3:10 pm-6:13 am

1 stop12h 03m

Toronto Pearson Intl

Wed 1/14

4:45 pm-7:17 pm

Nonstop5h 32m

$258

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 1/7

7:55 am-3:35 pm

Nonstop4h 40m

Toronto Pearson Intl

Thu 1/8

6:30 am-2:20 pm

1 stop10h 50m

$259

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 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 $282, 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 October to fly from Seattle, when ticket prices are also cheap, with an average price of $331.

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 $539. The most expensive day to fly to Toronto Pearson Intl Airport is Saturday, with ticket prices averaging around $712.

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

Flying to Toronto Pearson Intl Airport from Seattle in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $284 when looking at flights departing in the afternoon. Flights in the morning are often more expensive with an average ticket price of $617.

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 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 $413 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 $292 on momondo.

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

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Toronto Pearson Intl 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 December 2025, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 42% 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

$154

Fastest flight time

4h 40m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is $154. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $382.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 40m
Direct flights go from Seattle to Toronto Pearson Intl Airport every day.
Search flight deals

  • 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 40m, 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 $151Free CancellationRating
7.1
10,526 reviews
Search Air Canada flights
United AirlinesPriceFrom $173Free CancellationRating
7.4
9,092 reviews
Search United Airlines flights
DeltaPriceFrom $182Free CancellationRating
7.9
8,008 reviews
Search Delta flights
WestJetPriceFrom $226Free CancellationRating
7.2
3,202 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $253Free CancellationRating
8.0
11,453 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 4 flights from Seattle to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $463, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as $253 round-trip. Alaska Airlines has been scored 8.0/10 in 11,452 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 $173, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $380 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. 9,092 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
Niagara-on-the-Lake
Brampton
Markham
Vaughan
Richmond Hill
Oakville
Kitchener
Barrie
Cambridge
Guelph
Burlington
Peterborough
Whitby
Collingwood
Milton
Orillia
Stratford
St. Catharines

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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