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Cheap flights from Seattle to Toronto from $141

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 6/10. 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.
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
3:50 pm - 9:00 pm
YYZ
-
SEA
8h 10m
1 stop
$313WestJet
Fri, Jun 12 - Mon, Jun 15
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
12:00 pm - 6:45 pm
YYZ
-
SEA
9h 45m
2 stops
$317WestJet
Fri, Jun 12 - Fri, Jun 19
WestJet Logo
10:30 am - 10:45 pm
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
12:00 pm - 6:45 pm
YYZ
-
SEA
9h 45m
2 stops
$319WestJet
Wed, Jun 10 - Fri, Jun 19
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$321WestJet
Fri, Jun 12 - Thu, Jun 18
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$323WestJet
Fri, Jun 12 - Thu, Jun 25
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
12:00 pm - 6:45 pm
YYZ
-
SEA
9h 45m
2 stops
$325WestJet
Fri, Jun 12 - Fri, Jun 19
WestJet Logo
7:35 pm - 6:55 am
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
12:00 pm - 6:45 pm
YYZ
-
SEA
9h 45m
2 stops
$326WestJet
Fri, Jun 12 - Fri, Jun 19
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
$327WestJet
Thu, Jun 11 - Thu, Jun 25
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
$331WestJet
Thu, Jun 11 - Thu, Jun 18
Air Canada Logo
5:45 am - 7:27 pm
SEA
-
YYZ
10h 42m
2 stops
Air Canada Logo
6:45 pm - 9:08 pm
YYZ
-
SEA
5h 23mnonstop
$339Air Canada
Thu, Jun 11 - Wed, Jun 17

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
Jun 12
SEA7:35 pmSeattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 amToronto Pearson Intl
Jun 15
YYZ3:50 pmToronto Pearson Intl
8h 10m
1 stop
SEA9:00 pmSeattle/Tacoma Intl
$313
WestJet
Jun 12
SEA7:35 pmSeattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 amToronto Pearson Intl
Jun 19
YYZ12:00 pmToronto Pearson Intl
9h 45m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$317
WestJet
Jun 10
SEA10:30 amSeattle/Tacoma Intl
9h 15m
1 stop
YYZ10:45 pmToronto Pearson Intl
Jun 19
YYZ12:00 pmToronto Pearson Intl
9h 45m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$319

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
Jun 11
SEA5:45 amSeattle/Tacoma Intl
10h 42m
2 stops
YYZ7:27 pmToronto Pearson Intl
Jun 17
YYZ6:45 pmToronto Pearson Intl
5h 23m
SEA9:08 pmSeattle/Tacoma Intl
$339
Air Canada
Jun 10
SEA5:45 amSeattle/Tacoma Intl
10h 42m
2 stops
YYZ7:27 pmToronto Pearson Intl
Jun 16
YYZ6:45 pmToronto Pearson Intl
5h 23m
SEA9:08 pmSeattle/Tacoma Intl
$364
Air Canada
Jun 9
SEA5:45 amSeattle/Tacoma Intl
8h 45m
2 stops
YYZ5:30 pmToronto Pearson Intl
Jun 19
YYZ7:45 amToronto Pearson Intl
9h 37m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$374

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 May 29, 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

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Mon 6/15

3:50 pm-9:00 pm

1 stop8h 10m

$313

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Fri 6/19

12:00 pm-6:45 pm

2 stops9h 45m

$317

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 6/10

10:30 am-10:45 pm

1 stop9h 15m

Toronto Pearson Intl

Fri 6/19

12:00 pm-6:45 pm

2 stops9h 45m

$319

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Thu 6/18

1:30 pm-6:45 pm

1 stop8h 15m

$321

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Thu 6/25

1:30 pm-6:45 pm

1 stop8h 15m

$323

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Fri 6/19

12:00 pm-6:45 pm

2 stops9h 45m

$325

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Fri 6/19

12:00 pm-6:45 pm

2 stops9h 45m

$326

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/11

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Thu 6/25

1:30 pm-6:45 pm

1 stop8h 15m

$327

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/11

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Thu 6/18

1:30 pm-6:45 pm

1 stop8h 15m

$331
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/11

5:45 am-7:27 pm

2 stops10h 42m

Toronto Pearson Intl

Wed 6/17

6:45 pm-9:08 pm

Nonstop5h 23m

$339

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 $505. 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 $387 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 $290 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 24% 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 May 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 52% 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

$344

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 $344. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $500.
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

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 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 $132Free CancellationRating
7.1
11,096 reviews
Search Air Canada flights
DeltaPriceFrom $149Free CancellationRating
7.9
8,420 reviews
Search Delta flights
WestJetPriceFrom $226Free CancellationRating
7.2
3,349 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $250Free CancellationRating
7.9
12,429 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
9,763 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 5 flights from Seattle to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $443, 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 12,429 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 $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. 9,763 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
Peterborough
Guelph
Orillia
Whitby
Oshawa
Brantford
Stratford

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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