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Cheap flights from Seattle to Toronto from $119

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 10/9. 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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Cheap round-trip flights

Air Canada Logo
2:55 pm - 1:06 amSEA-YYZ
7h 11m1 stop
Air Canada Logo
7:30 pm - 9:45 pmYYZ-SEA
5h 15mnonstop
$256Air Canada
Find Deal
Wed, Oct 15 - Sat, Oct 25
WestJet Logo
8:40 am - 12:31 amSEA-YYZ
12h 51m2 stops
WestJet Logo
6:45 am - 8:29 pmYYZ-SEA
16h 44m2 stops
$257WestJet
Find Deal
Fri, Oct 17 - Mon, Oct 20
WestJet Logo
8:40 am - 12:31 amSEA-YYZ
12h 51m2 stops
WestJet Logo
6:30 am - 2:38 pmYYZ-SEA
11h 08m1 stop
$258WestJet
Find Deal
Fri, Oct 17 - Sat, Nov 1
WestJet Logo
8:40 am - 12:31 amSEA-YYZ
12h 51m2 stops
WestJet Logo
7:45 am - 2:20 pmYYZ-SEA
9h 35m1 stop
$259WestJet
Find Deal
Sun, Oct 19 - Fri, Oct 31
Logo
7:18 am - 3:00 pmSEA-YYZ
4h 42mnonstop
Logo
7:45 am - 2:20 pmYYZ-SEA
9h 35m1 stop
$260
Find Deal
Thu, Oct 16 - Sun, Nov 2
Alaska Airlines Logo
7:18 am - 3:00 pmSEA-YYZ
4h 42mnonstop
Alaska Airlines Logo
4:45 pm - 7:08 pmYYZ-SEA
5h 23mnonstop
$262Alaska Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
Air Canada Logo
2:55 pm - 1:06 amSEA-YYZ
7h 11m1 stop
Air Canada Logo
7:30 pm - 9:45 pmYYZ-SEA
5h 15mnonstop
$267Air Canada
Find Deal
Wed, Oct 8 - Fri, Oct 17
United Airlines Logo
6:00 am - 5:19 pmSEA-YYZ
8h 19m1 stop
United Airlines Logo
2:30 pm - 8:44 pmYYZ-SEA
9h 14m1 stop
$276United Airlines
Find Deal
Sat, Oct 11 - Sat, Oct 18
United Airlines Logo
5:00 am - 10:48 pmSEA-YYZ
14h 48m1 stop
United Airlines Logo
6:30 am - 6:45 pmYYZ-SEA
15h 15m1 stop
$287United Airlines
Find Deal
Thu, Oct 9 - Sat, Oct 18
Alaska Airlines Logo
7:16 am - 3:00 pmSEA-YYZ
4h 44mnonstop
Alaska Airlines Logo
4:45 pm - 7:18 pmYYZ-SEA
5h 33mnonstop
$297Alaska Airlines
Find Deal
Tue, Sep 30 - Tue, Dec 2

Air Canada flights from Seattle to Toronto Pearson Intl Airport

Our best Air Canada deals on Seattle to Toronto Pearson Intl Airport flight tickets
Air Canada
Oct 15
SEA2:55 pmSeattle/Tacoma Intl
7h 11m
1 stop
YYZ1:06 amToronto Pearson Intl
Oct 25
YYZ7:30 pmToronto Pearson Intl
5h 15m
SEA9:45 pmSeattle/Tacoma Intl
$256
Find similar
Air Canada
Oct 8
SEA2:55 pmSeattle/Tacoma Intl
7h 11m
1 stop
YYZ1:06 amToronto Pearson Intl
Oct 17
YYZ7:30 pmToronto Pearson Intl
5h 15m
SEA9:45 pmSeattle/Tacoma Intl
$267
Find similar
Air Canada
Oct 11
SEA2:55 pmSeattle/Tacoma Intl
12h 35m
2 stops
YYZ6:30 amToronto Pearson Intl
Oct 16
YYZ10:25 amToronto Pearson Intl
11h 11m
2 stops
SEA6:36 pmSeattle/Tacoma Intl
$272
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
Oct 17
SEA8:40 amSeattle/Tacoma Intl
12h 51m
2 stops
YYZ12:31 amToronto Pearson Intl
Oct 20
YYZ6:45 amToronto Pearson Intl
16h 44m
2 stops
SEA8:29 pmSeattle/Tacoma Intl
$257
Find similar
WestJet
Oct 17
SEA8:40 amSeattle/Tacoma Intl
12h 51m
2 stops
YYZ12:31 amToronto Pearson Intl
Nov 1
YYZ6:30 amToronto Pearson Intl
11h 08m
1 stop
SEA2:38 pmSeattle/Tacoma Intl
$258
Find similar
WestJet
Oct 19
SEA8:40 amSeattle/Tacoma Intl
12h 51m
2 stops
YYZ12:31 amToronto Pearson Intl
Oct 31
YYZ7:45 amToronto Pearson Intl
9h 35m
1 stop
SEA2:20 pmSeattle/Tacoma Intl
$259
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 September 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

Wed 10/15

2:55 pm-1:06 am

1 stop7h 11m

Toronto Pearson Intl

Sat 10/25

7:30 pm-9:45 pm

Nonstop5h 15m

$256

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 10/17

8:40 am-12:31 am

2 stops12h 51m

Toronto Pearson Intl

Mon 10/20

6:45 am-8:29 pm

2 stops16h 44m

$257

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 10/17

8:40 am-12:31 am

2 stops12h 51m

Toronto Pearson Intl

Sat 11/1

6:30 am-2:38 pm

1 stop11h 08m

$258

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 10/19

8:40 am-12:31 am

2 stops12h 51m

Toronto Pearson Intl

Fri 10/31

7:45 am-2:20 pm

1 stop9h 35m

$259

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 10/16

7:18 am-3:00 pm

Nonstop4h 42m

Toronto Pearson Intl

Sun 11/2

7:45 am-2:20 pm

1 stop9h 35m

$260

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 10/18

7:18 am-3:00 pm

Nonstop4h 42m

Toronto Pearson Intl

Thu 10/23

4:45 pm-7:08 pm

Nonstop5h 23m

$262

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 10/8

2:55 pm-1:06 am

1 stop7h 11m

Toronto Pearson Intl

Fri 10/17

7:30 pm-9:45 pm

Nonstop5h 15m

$267

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 10/11

6:00 am-5:19 pm

1 stop8h 19m

Toronto Pearson Intl

Sat 10/18

2:30 pm-8:44 pm

1 stop9h 14m

$276

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 10/9

5:00 am-10:48 pm

1 stop14h 48m

Toronto Pearson Intl

Sat 10/18

6:30 am-6:45 pm

1 stop15h 15m

$287

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/30

7:16 am-3:00 pm

Nonstop4h 44m

Toronto Pearson Intl

Tue 12/2

4:45 pm-7:18 pm

Nonstop5h 33m

$297

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 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 $304, 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 March to fly from Seattle, when ticket prices are also cheap, with an average price of $316.

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 $548. The most expensive day to fly to Toronto Pearson Intl Airport is Saturday, with ticket prices averaging around $699.

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 evening are often more expensive with an average ticket price of $627.

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 $423 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?

You could potentially save up to 27% on your flight if you consider stops on a Seattle to Toronto Pearson Intl Airport flight.

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

As of September 2025, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 53% 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 35m

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 $398.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 35m
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 $128Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom $173Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights
DeltaPriceFrom $186Free CancellationRating
7.9
7,956 reviews
Search Delta flights
WestJetPriceFrom $235Free CancellationRating
7.2
3,091 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $276Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 6 flights from Seattle to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $500, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as $276 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 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 $391 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. 8,931 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
Vaughan
Markham
Oakville
Richmond Hill
Kitchener
Cambridge
Guelph
Burlington
Barrie
St. Catharines
Milton
Collingwood
Peterborough
Brantford
Oshawa
Ajax

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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