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Cheap flights from Seattle to Toronto from C$ 241

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
2:30 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 15m2 stops Calgary Edmonton
WestJet Logo
7:30 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 10m1 stop Calgary
C$ 502WestJet
Fri, 15 Jan - Tue, 19 Jan
WestJet Logo
2:30 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 15m2 stops Calgary Edmonton
WestJet Logo
7:00 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 40m2 stops Edmonton Calgary
C$ 505WestJet
Fri, 15 Jan - Tue, 19 Jan
WestJet Logo
2:30 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 15m2 stops Calgary Edmonton
WestJet Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 507WestJet
Tue, 1 Dec - Fri, 4 Dec
Alaska Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Alaska Airlines Logo
5:15 p.m. - 7:56 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 41mdirect
C$ 570Alaska Airlines
Fri, 11 Dec - Mon, 14 Dec
Alaska Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Alaska Airlines Logo
5:15 p.m. - 7:56 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 41mdirect
C$ 570Alaska Airlines
Tue, 1 Dec - Fri, 4 Dec
Multiple Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Multiple Airlines Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 577Multiple Airlines
Fri, 11 Dec - Mon, 14 Dec
Multiple Airlines Logo
8:29 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 36mdirect
Multiple Airlines Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 577Multiple Airlines
Wed, 13 Jan - Mon, 18 Jan
Air Canada Logo
3:15 p.m. - 6:16 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 01m2 stops Vancouver Intl Calgary
Air Canada Logo
8:45 a.m. - 2:37 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 52m1 stop Vancouver Intl
C$ 622Air Canada
Sat, 16 Jan - Sun, 17 Jan
Air Canada Logo
3:15 p.m. - 6:16 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 01m2 stops Vancouver Intl Calgary
Air Canada Logo
8:45 a.m. - 2:37 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 52m1 stop Vancouver Intl
C$ 622Air Canada
Sat, 16 Jan - Sun, 17 Jan
Alaska Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Alaska Airlines Logo
5:15 p.m. - 8:13 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 58mdirect
C$ 626Alaska Airlines
Sat, 12 Dec - Fri, 18 Dec

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WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets
WestJet
15 Jan
SEA2:30 p.m.Seattle/Tacoma Intl
12h 15m
2 stops
YYZ5:45 a.m.Toronto Pearson Intl
19 Jan
YYZ7:30 a.m.Toronto Pearson Intl
9h 10m
1 stop
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 502
WestJet
15 Jan
SEA2:30 p.m.Seattle/Tacoma Intl
12h 15m
2 stops
YYZ5:45 a.m.Toronto Pearson Intl
19 Jan
YYZ7:00 a.m.Toronto Pearson Intl
9h 40m
2 stops
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 505
WestJet
23 Nov
SEA2:30 p.m.Seattle/Tacoma Intl
12h 15m
2 stops
YYZ5:45 a.m.Toronto Pearson Intl
2 Dec
YYZ7:30 a.m.Toronto Pearson Intl
9h 10m
1 stop
SEA1:40 p.m.Seattle/Tacoma Intl
C$ 507

Air Canada flights from Seattle to Toronto

Our best Air Canada deals on Seattle to Toronto flight tickets
Air Canada
23 Nov
SEA7:05 p.m.Seattle/Tacoma Intl
8h 47m
1 stop
YYZ6:52 a.m.Toronto Pearson Intl
3 Dec
YYZ6:25 p.m.Toronto Pearson Intl
5h 34m
SEA8:59 p.m.Seattle/Tacoma Intl
C$ 642
Air Canada
23 Nov
SEA10:10 a.m.Seattle/Tacoma Intl
10h 47m
2 stops
YYZ11:57 p.m.Toronto Pearson Intl
2 Dec
YYZ2:45 p.m.Toronto Pearson Intl
10h 12m
2 stops
SEA9:57 p.m.Seattle/Tacoma Intl
C$ 649
Air Canada
23 Nov
SEA10:10 a.m.Seattle/Tacoma Intl
10h 30m
2 stops
YYZ11:40 p.m.Toronto Pearson Intl
5 Dec
YYZ5:15 p.m.Toronto Pearson Intl
7h 52m
1 stop
SEA10:07 p.m.Seattle/Tacoma Intl
C$ 657

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Toronto 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 15/1

2:30 p.m.-5:45 a.m.

2 stops12h 15m

Toronto Pearson Intl

Tue 19/1

7:30 a.m.-1:40 p.m.

1 stop9h 10m

C$ 502

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 15/1

2:30 p.m.-5:45 a.m.

2 stops12h 15m

Toronto Pearson Intl

Tue 19/1

7:00 a.m.-1:40 p.m.

2 stops9h 40m

C$ 505

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 1/12

2:30 p.m.-5:45 a.m.

2 stops12h 15m

Toronto Pearson Intl

Fri 4/12

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 507
Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 11/12

8:33 a.m.-4:05 p.m.

Nonstop4h 32m

Toronto Pearson Intl

Mon 14/12

5:15 p.m.-7:56 p.m.

Nonstop5h 41m

C$ 570

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 1/12

8:33 a.m.-4:05 p.m.

Nonstop4h 32m

Toronto Pearson Intl

Fri 4/12

5:15 p.m.-7:56 p.m.

Nonstop5h 41m

C$ 570

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Fri 11/12

8:33 a.m.-4:05 p.m.

Nonstop4h 32m

Toronto Pearson Intl

Mon 14/12

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 577

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Wed 13/1

8:29 a.m.-4:05 p.m.

Nonstop4h 36m

Toronto Pearson Intl

Mon 18/1

6:10 a.m.-1:40 p.m.

1 stop10h 30m

C$ 577

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 16/1

3:15 p.m.-6:16 a.m.

2 stops12h 01m

Toronto Pearson Intl

Sun 17/1

8:45 a.m.-2:37 p.m.

1 stop8h 52m

C$ 622

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 16/1

3:15 p.m.-6:16 a.m.

2 stops12h 01m

Toronto Pearson Intl

Sun 17/1

8:45 a.m.-2:37 p.m.

1 stop8h 52m

C$ 622

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 12/12

8:33 a.m.-4:05 p.m.

Nonstop4h 32m

Toronto Pearson Intl

Fri 18/12

5:15 p.m.-8:13 p.m.

Nonstop5h 58m

C$ 626

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

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?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 523 to C$ 821.
The lowest price recently found on this route was C$ 502.

What is the cheapest month to fly to Toronto?

The month of January is, on average, the cheapest month to fly to Toronto from Seattle, with most prices found around C$ 365. The month of February is another great option to travel to Toronto, with average flight prices from Seattle averaging around C$ 408.

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

According to our data, Thursday is the cheapest day to fly to Toronto from Seattle. The lowest ticket price found for a Thursday departure recently was C$ 761. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Seattle to Toronto on a Monday will generally be more expensive and average around C$ 1,183. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest Seattle/Tacoma Intl to Toronto flight route?

Fly from Seattle/Tacoma Intl to Toronto Pearson Intl for the best Seattle/Tacoma Intl - Toronto flight prices

How far in advance should I book a flight from Seattle to Toronto?

You are more likely to see cheaper flights to Toronto from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around C$ 648 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from Seattle for as low as C$ 449 on momondo.

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

There are 3 cabin classes available to choose from on Seattle to Toronto 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 flights?

No. A direct flight is the cheapest option for a flight between Seattle to Toronto.

How have Seattle to Toronto flight prices changed over time?

As of November 2026, prices for Seattle to Toronto flights are approximately 66% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Toronto

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Toronto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Toronto (SEA to YTO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Toronto

Best price found

C$ 241

Fastest flight time

4h 36m

Direct flights

Every day

Airports in Toronto

3 airports
The best one-way flight to Toronto from Seattle in the past 72 hours is C$ 241. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is C$ 502.
The fastest flight from Seattle to Toronto takes 4h 36m
Direct flights go from Seattle to Toronto every day.
There are 3 airports in Toronto. From Seattle there are direct flights to Toronto Pearson Intl (YYZ).
Search flight deals

Frequently asked questions about flying from Seattle to Toronto

  • How far is Seattle/Tacoma Intl to Toronto by plane?

    There are 3323.4 km between Seattle/Tacoma Intl and Toronto. In terms of flight time, this usually takes a little over 4h 36m.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Toronto?

    Prices for flights from Seattle/Tacoma Intl Airport to Toronto are updated daily.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Toronto?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Toronto?

    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.

  • What documentation or ID do you need to fly to Toronto?

    The travel and health documents required for your trip to Toronto 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. 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?

  • What is the most popular airline from Seattle to Toronto?

Best airlines flying from Seattle to Toronto

Compare and see reviews for airlines that fly from Seattle to Toronto with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom C$ 319Free CancellationRating
7.9
13,159 reviews
Search Alaska Airlines flights
WestJetPriceFrom C$ 358Free CancellationRating
7.2
3,435 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 372Free CancellationRating
7.1
11,880 reviews
Search Air Canada flights

  • Alaska Airlines Flights From Seattle to Toronto

    Alaska Airlines is one of the most popular airlines flying from Seattle to Toronto, operating 5 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Toronto starts from C$ 319 round-trip, up to an average price of C$ 954. Our users have rated Alaska Airlines at 7.9/10.

  • Air Canada Flights From Seattle to Toronto

    Another popular option for Seattle to Toronto flights is Air Canada (7.1/10, 11,880 ratings). Air Canada flies from Seattle to Toronto around 6 times per week, with deals starting from C$ 372 round-trip and rising to an average price of around C$ 761.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Apsley

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Toronto?

It is quick and easy to find Seattle to Toronto flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Toronto that suits you.

Can I find flights from Seattle to Toronto with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Toronto from Seattle with this policy.

How can momondo help me find flights from Seattle to Toronto?

Once you have performed a search for Seattle to Toronto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Toronto Region of Waterloo Intl Airport
Toronto Island Airport
Toronto Pearson Intl Airport