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Cheap flights from Seattle to Toronto from $168

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 9/25. 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
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
12:00 pm - 9:00 pm
YYZ
-
SEA
12h 00m
2 stops
$368WestJet
Sat, Jul 25 - Sun, Aug 2
WestJet Logo
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
12:00 pm - 9:00 pm
YYZ
-
SEA
12h 00m
2 stops
$369WestJet
Sat, Jul 25 - Sun, Aug 2
WestJet Logo
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$370WestJet
Fri, Jul 24 - Mon, Aug 3
WestJet Logo
10:30 am - 9:15 pm
SEA
-
YYZ
7h 45m
1 stop
WestJet Logo
3:50 pm - 9:00 pm
YYZ
-
SEA
8h 10m
1 stop
$371WestJet
Mon, Aug 31 - Sun, Sep 6
WestJet Logo
7:00 am - 5:10 pm
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$373WestJet
Sun, Sep 6 - Fri, Sep 18
WestJet Logo
7:35 pm - 5:45 am
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$374WestJet
Thu, Jul 9 - Tue, Jul 14
WestJet Logo
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$375WestJet
Tue, Jul 7 - Tue, Jul 14
WestJet Logo
7:00 am - 7:00 pm
SEA
-
YYZ
9h 00m
2 stops
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$376WestJet
Wed, Sep 2 - Tue, Sep 8
WestJet Logo
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$377WestJet
Sat, Sep 5 - Fri, Sep 18
WestJet Logo
10:30 am - 9:15 pm
SEA
-
YYZ
7h 45m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$378WestJet
Sun, Oct 4 - Sun, Oct 11

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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
Jul 25
SEA10:30 amSeattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 pmToronto Pearson Intl
Aug 2
YYZ12:00 pmToronto Pearson Intl
12h 00m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
$368
WestJet
Jul 25
SEA10:30 amSeattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 pmToronto Pearson Intl
Aug 2
YYZ12:00 pmToronto Pearson Intl
12h 00m
2 stops
SEA9:00 pmSeattle/Tacoma Intl
$369
WestJet
Jul 24
SEA10:30 amSeattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 pmToronto Pearson Intl
Aug 3
YYZ1:30 pmToronto Pearson Intl
8h 15m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$370

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 June 15, 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 - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 7/25

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Sun 8/2

12:00 pm-9:00 pm

2 stops12h 00m

$368

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 7/25

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Sun 8/2

12:00 pm-9:00 pm

2 stops12h 00m

$369

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 7/24

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Mon 8/3

1:30 pm-6:45 pm

1 stop8h 15m

$370

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 8/31

10:30 am-9:15 pm

1 stop7h 45m

Toronto Pearson Intl

Sun 9/6

3:50 pm-9:00 pm

1 stop8h 10m

$371
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 9/6

7:00 am-5:10 pm

1 stop7h 10m

Toronto Pearson Intl

Fri 9/18

1:30 pm-6:45 pm

1 stop8h 15m

$373

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 7/9

7:35 pm-5:45 am

1 stop7h 10m

Toronto Pearson Intl

Tue 7/14

1:30 pm-6:45 pm

1 stop8h 15m

$374

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 7/7

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Tue 7/14

1:30 pm-6:45 pm

1 stop8h 15m

$375

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 9/2

7:00 am-7:00 pm

2 stops9h 00m

Toronto Pearson Intl

Tue 9/8

1:30 pm-6:45 pm

1 stop8h 15m

$376

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 9/5

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Fri 9/18

1:30 pm-6:45 pm

1 stop8h 15m

$377

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 10/4

10:30 am-9:15 pm

1 stop7h 45m

Toronto Pearson Intl

Sun 10/11

1:30 pm-6:45 pm

1 stop8h 15m

$378

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?

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 $510. The most expensive day to fly to Toronto Pearson Intl Airport is Sunday, with ticket prices averaging around $756.

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 $394 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 $280 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?

You could potentially save up to 23% 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 June 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 41% 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

$410

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 $410. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $566.
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
11,194 reviews
Search Air Canada flights
DeltaPriceFrom $142Free CancellationRating
7.9
8,397 reviews
Search Delta flights
WestJetPriceFrom $226Free CancellationRating
7.2
3,362 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $250Free CancellationRating
7.9
12,511 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
9,831 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 $449, 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 12,511 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 $386 round-trip. United Airlines operates 6 flights out of Seattle into Toronto Pearson Intl Airport in an average week, so prices vary by time and availability. 9,831 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
Kitchener
Vaughan
Barrie
Oakville
Richmond Hill
Collingwood
Burlington
Cambridge
Orillia
Guelph
Peterborough
Oshawa
Whitby
Milton
Brantford

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.

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