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Cheap flights from Seattle to Toronto from $127

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 6/18. 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
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
12:00 pm - 6:45 pm
YYZ
-
SEA
9h 45m
2 stops
$276WestJet
Tue, Jul 14 - Fri, Aug 14
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
1 stop
$277WestJet
Fri, Aug 7 - Fri, Aug 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
$278WestJet
Thu, Sep 3 - Wed, Sep 9
WestJet Logo
10:30 am - 10:45 pm
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
1:30 pm - 6:45 pm
YYZ
-
SEA
8h 15m
1 stop
$279WestJet
Sat, Jun 13 - Thu, Jun 18
WestJet Logo
10:30 am - 11:59 pm
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
6:10 am - 6:45 pm
YYZ
-
SEA
15h 35m
2 stops
$280WestJet
Thu, Jul 16 - Sun, Aug 16
WestJet Logo
7:00 am - 9:10 pm
SEA
-
YYZ
11h 10m
2 stops
WestJet Logo
2:50 pm - 9:00 pm
YYZ
-
SEA
9h 10m
1 stop
$281WestJet
Fri, Jul 24 - Sat, Aug 1
WestJet Logo
10:30 am - 10:45 pm
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
10:20 pm - 9:40 am
YYZ
-
SEA
14h 20m
2 stops
$282WestJet
Fri, Jul 17 - Mon, Jul 20
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
$283WestJet
Tue, Jun 2 - Thu, Jun 4
WestJet Logo
10:30 am - 10:45 pm
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
5:20 pm - 9:40 am
YYZ
-
SEA
19h 20m
2 stops
$284WestJet
Thu, Jul 16 - Wed, Aug 5
WestJet Logo
10:30 am - 10:45 pm
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
10:20 pm - 9:40 am
YYZ
-
SEA
14h 20m
2 stops
$285WestJet
Thu, Aug 6 - Tue, Aug 11

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
Jul 14
SEA10:30 amSeattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 pmToronto Pearson Intl
Aug 14
YYZ12:00 pmToronto Pearson Intl
9h 45m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$276
WestJet
Aug 7
SEA7:35 pmSeattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 amToronto Pearson Intl
Aug 14
YYZ12:00 pmToronto Pearson Intl
9h 45m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$277
WestJet
Sep 3
SEA10:30 amSeattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 pmToronto Pearson Intl
Sep 9
YYZ1:30 pmToronto Pearson Intl
8h 15m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$278

Delta flights from Seattle to Toronto Pearson Intl Airport

Our best Delta deals on Seattle to Toronto Pearson Intl Airport flight tickets
Delta
May 18
SEA11:05 pmSeattle/Tacoma Intl
11h 25m
1 stop
YYZ1:30 pmToronto Pearson Intl
May 20
YYZ2:20 pmToronto Pearson Intl
11h 28m
1 stop
SEA10:48 pmSeattle/Tacoma Intl
$470
Delta
May 10
SEA9:10 amSeattle/Tacoma Intl
11h 04m
1 stop
YYZ11:14 pmToronto Pearson Intl
May 18
YYZ12:09 pmToronto Pearson Intl
11h 32m
1 stop
SEA8:41 pmSeattle/Tacoma Intl
$486

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 8, 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

Tue 7/14

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Fri 8/14

12:00 pm-6:45 pm

2 stops9h 45m

$276

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 8/7

7:35 pm-6:55 am

1 stop8h 20m

Toronto Pearson Intl

Fri 8/14

12:00 pm-6:45 pm

1 stop9h 45m

$277

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 9/3

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Wed 9/9

1:30 pm-6:45 pm

1 stop8h 15m

$278
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 6/13

10:30 am-10:45 pm

1 stop9h 15m

Toronto Pearson Intl

Thu 6/18

1:30 pm-6:45 pm

1 stop8h 15m

$279

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 7/16

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Sun 8/16

6:10 am-6:45 pm

2 stops15h 35m

$280

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 7/24

7:00 am-9:10 pm

2 stops11h 10m

Toronto Pearson Intl

Sat 8/1

2:50 pm-9:00 pm

1 stop9h 10m

$281

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 7/17

10:30 am-10:45 pm

1 stop9h 15m

Toronto Pearson Intl

Mon 7/20

10:20 pm-9:40 am

2 stops14h 20m

$282

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 6/2

10:30 am-11:59 pm

2 stops10h 29m

Toronto Pearson Intl

Thu 6/4

1:30 pm-6:45 pm

1 stop8h 15m

$283

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 7/16

10:30 am-10:45 pm

1 stop9h 15m

Toronto Pearson Intl

Wed 8/5

5:20 pm-9:40 am

2 stops19h 20m

$284

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 8/6

10:30 am-10:45 pm

1 stop9h 15m

Toronto Pearson Intl

Tue 8/11

10:20 pm-9:40 am

2 stops14h 20m

$285

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 $495. The most expensive day to fly to Toronto Pearson Intl Airport is Sunday, with ticket prices averaging around $708.

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 $386 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 $308 on momondo.

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

$303

Fastest flight time

4h 45m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is $303. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $480.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 45m
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 45m, 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
DeltaPriceFrom $142Free CancellationRating
7.9
8,456 reviews
Search Delta flights
Air CanadaPriceFrom $150Free CancellationRating
7.1
11,002 reviews
Search Air Canada flights
WestJetPriceFrom $216Free CancellationRating
7.2
3,332 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $251Free CancellationRating
7.9
12,342 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $277Free CancellationRating
7.4
9,694 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 $443, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as $251 round-trip. Alaska Airlines has been scored 7.9/10 in 12,342 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 $469 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. 9,694 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
Kitchener
Oakville
Barrie
Richmond Hill
Collingwood
Burlington
Cambridge
Peterborough
Guelph
Orillia
Whitby
Brantford
Oshawa
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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