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Cheap flights from Seattle to Toronto from C$ 227

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 a.m. - 5:10 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
15h 40m2 stops Calgary Edmonton
WestJet Logo
12:00 p.m. - 6:45 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 45m1 stop Calgary
C$ 484WestJet
Fri, 25 Sep - Sat, 17 Oct
Multiple Airlines Logo
7:35 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 10m1 stop Calgary
Multiple Airlines Logo
2:15 p.m. - 10:59 a.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
23h 44m2 stops Calgary Las Vegas Harry Reid Intl
C$ 484Multiple Airlines
Thu, 22 Oct - Mon, 2 Nov
WestJet Logo
7:35 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 10m1 stop Calgary
WestJet Logo
6:00 a.m. - 6:45 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
15h 45m1 stop Calgary
C$ 485WestJet
Sat, 10 Oct - Sun, 18 Oct
Multiple Airlines Logo
7:35 p.m. - 6:55 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
8h 20m1 stop Calgary
Multiple Airlines Logo
8:35 p.m. - 9:42 a.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
16h 07m1 stop Las Vegas Harry Reid Intl
C$ 485Multiple Airlines
Mon, 28 Sep - Fri, 2 Oct
WestJet Logo
7:35 p.m. - 6:55 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
8h 20m1 stop Calgary
WestJet Logo
6:00 a.m. - 6:45 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
15h 45m1 stop Calgary
C$ 485WestJet
Thu, 15 Oct - Sun, 18 Oct
Multiple Airlines Logo
7:35 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 10m1 stop Calgary
Multiple Airlines Logo
3:50 p.m. - 9:48 a.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
20h 58m2 stops Calgary Las Vegas Harry Reid Intl
C$ 491Multiple Airlines
Fri, 16 Oct - Thu, 22 Oct
Alaska Airlines Logo
7:52 a.m. - 3:45 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 53mdirect
Alaska Airlines Logo
4:55 p.m. - 7:26 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 31mdirect
C$ 588Alaska Airlines
Tue, 29 Sep - Tue, 6 Oct
Air Canada Logo
7:55 a.m. - 3:36 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 41mdirect
Air Canada Logo
6:25 p.m. - 8:59 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mdirect
C$ 632Air Canada
Wed, 21 Oct - Mon, 26 Oct
Air Canada Logo
7:55 a.m. - 3:36 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 41mdirect
Air Canada Logo
6:25 p.m. - 8:59 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mdirect
C$ 632Air Canada
Wed, 21 Oct - Tue, 27 Oct
Alaska Airlines Logo
8:19 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 46mdirect
Alaska Airlines Logo
5:15 p.m. - 7:43 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 28mdirect
C$ 651Alaska Airlines
Sat, 14 Nov - Tue, 1 Dec

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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
25 Sep
SEA10:30 a.m.Seattle/Tacoma Intl
15h 40m
2 stops
YYZ5:10 a.m.Toronto Pearson Intl
17 Oct
YYZ12:00 p.m.Toronto Pearson Intl
9h 45m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 484
WestJet
16 Oct
SEA10:30 a.m.Seattle/Tacoma Intl
7h 45m
1 stop
YYZ9:15 p.m.Toronto Pearson Intl
19 Oct
YYZ8:00 a.m.Toronto Pearson Intl
13h 45m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 487
WestJet
8 Oct
SEA10:30 a.m.Seattle/Tacoma Intl
9h 15m
1 stop
YYZ10:45 p.m.Toronto Pearson Intl
11 Oct
YYZ10:20 p.m.Toronto Pearson Intl
14h 20m
2 stops
SEA9:40 a.m.Seattle/Tacoma Intl
C$ 488

momondo Fare Finder

 
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 Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 25/9

10:30 a.m.-5:10 a.m.

2 stops15h 40m

Toronto Pearson Intl

Sat 17/10

12:00 p.m.-6:45 p.m.

1 stop9h 45m

C$ 484

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 22/10

7:35 p.m.-5:45 a.m.

1 stop7h 10m

Toronto Pearson Intl

Mon 2/11

2:15 p.m.-10:59 a.m.

2 stops23h 44m

C$ 484

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 10/10

7:35 p.m.-5:45 a.m.

1 stop7h 10m

Toronto Pearson Intl

Sun 18/10

6:00 a.m.-6:45 p.m.

1 stop15h 45m

C$ 485

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Mon 28/9

7:35 p.m.-6:55 a.m.

1 stop8h 20m

Toronto Pearson Intl

Fri 2/10

8:35 p.m.-9:42 a.m.

1 stop16h 07m

C$ 485

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 15/10

7:35 p.m.-6:55 a.m.

1 stop8h 20m

Toronto Pearson Intl

Sun 18/10

6:00 a.m.-6:45 p.m.

1 stop15h 45m

C$ 485

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 16/10

7:35 p.m.-5:45 a.m.

1 stop7h 10m

Toronto Pearson Intl

Thu 22/10

3:50 p.m.-9:48 a.m.

2 stops20h 58m

C$ 491

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 29/9

7:52 a.m.-3:45 p.m.

Nonstop4h 53m

Toronto Pearson Intl

Tue 6/10

4:55 p.m.-7:26 p.m.

Nonstop5h 31m

C$ 588

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 21/10

7:55 a.m.-3:36 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Mon 26/10

6:25 p.m.-8:59 p.m.

Nonstop5h 34m

C$ 632

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 21/10

7:55 a.m.-3:36 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Tue 27/10

6:25 p.m.-8:59 p.m.

Nonstop5h 34m

C$ 632
Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 14/11

8:19 a.m.-4:05 p.m.

Nonstop4h 46m

Toronto Pearson Intl

Tue 1/12

5:15 p.m.-7:43 p.m.

Nonstop5h 28m

C$ 651

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?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 589 to C$ 957.
The lowest price recently found on this route was C$ 484.

What is the cheapest month to fly to Toronto Pearson Intl Airport?

If you aren’t able to travel during the month of January, then book flights to Toronto Pearson Intl Airport from Seattle during February instead. Flights to Toronto Pearson Intl Airport in February, while not as cheap as those in January, still average around C$ 384.

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

Our data shows that Thursday is the least expensive day to fly to Toronto Pearson Intl Airport. Tickets to fly out on this day can be as low as C$ 748. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Toronto Pearson Intl Airport for around C$ 1,088.

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 C$ 553 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 C$ 441 on momondo.

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

There are 3 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?

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 September 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 32% 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

C$ 227

Fastest flight time

4h 36m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 227. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 484.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 36m
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?

    The distance between Seattle/Tacoma Intl and Toronto Pearson Intl is about 3304.6 km. 4h 36m is a normal flight duration for this route.

  • 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 required for your trip to Toronto Pearson Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Toronto Pearson Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
Alaska AirlinesPriceFrom C$ 282Free CancellationRating
7.9
12,915 reviews
Search Alaska Airlines flights
WestJetPriceFrom C$ 286Free CancellationRating
7.2
3,444 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 366Free CancellationRating
7.1
11,620 reviews
Search Air Canada 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 C$ 775, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 282 round-trip. Alaska Airlines has been scored 7.9/10 in 12,915 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 11,620 reviews) operates around 7 flights from Seattle to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 748, with deals from around C$ 366 rare but found on momondo. Referenced prices are for round-trip Seattle to Toronto Pearson Intl Airport flight searches in the last 72 hours.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Brampton
Collingwood
Oshawa
Markham
Vaughan
Guelph
Barrie
Kitchener
Niagara-on-the-Lake
Waterloo
Oakville
Cambridge
Burlington
Peterborough
Richmond Hill
Pickering
Orillia
Muskoka

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?

Flights from Seattle to Toronto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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?

Yes. momondo can track prices for Seattle to Toronto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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