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Cheap flights from Seattle to Toronto from C$ 137

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 6/2. 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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Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Toronto that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Toronto.

Cheap last-minute flights

Planning a quick getaway from Seattle to Toronto? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Toronto, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Toronto

Find recent round-trip train or bus tickets from Seattle to Toronto.

All round-trip flight deals to Toronto

The cheapest plane tickets to Toronto found on KAYAK recently.
2:16 p.m. - 6:46 a.m.SEA-YYZ
13h 30m1 stop
8:00 p.m. - 12:19 a.m.YYZ-SEA
31h 19m1 stop
C$ 334
Find Deal
Wed, 8 Jan - Mon, 13 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 336Alaska Airlines
Find Deal
Sat, 11 Jan - Sat, 18 Jan
7:00 a.m. - 9:25 p.m.SEA-YYZ
11h 25m1 stop
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 413Lufthansa
Find Deal
Sat, 1 Feb - Sat, 8 Feb
6:15 a.m. - 9:25 p.m.SEA-YYZ
12h 10m2 stops
2:00 p.m. - 9:11 p.m.YYZ-SEA
10h 11m2 stops
C$ 421Lufthansa
Find Deal
Sat, 1 Feb - Sat, 8 Feb
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 427Air Canada
Find Deal
Tue, 14 Jan - Tue, 21 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 434United Airlines
Find Deal
Sat, 11 Jan - Tue, 14 Jan
7:05 p.m. - 6:09 a.m.SEA-YYZ
8h 04m1 stop
11:50 p.m. - 9:50 a.m.YYZ-SEA
13h 00m2 stops
C$ 437Air Canada
Find Deal
Fri, 31 Jan - Fri, 7 Feb
3:20 p.m. - 9:11 p.m.SEA-YYZ
26h 51m1 stop
7:55 a.m. - 2:21 p.m.YYZ-SEA
9h 26m1 stop
C$ 444WestJet
Find Deal
Sat, 11 Jan - Tue, 14 Jan
7:00 a.m. - 7:45 p.m.SEA-YYZ
9h 45m1 stop
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 447United Airlines
Find Deal
Fri, 31 Jan - Fri, 7 Feb
3:20 p.m. - 12:38 p.m.SEA-YYZ
18h 18m1 stop
8:00 p.m. - 2:21 p.m.YYZ-SEA
21h 21m1 stop
C$ 454WestJet
Find Deal
Sat, 11 Jan - Sat, 18 Jan
3:15 p.m. - 5:58 a.m.SEA-YYZ
11h 43m2 stops
C$ 137WestJet
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Thu, 6 Feb
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
C$ 141Alaska Airlines
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Wed, 15 Jan
11:30 a.m. - 12:26 a.m.SEA-YYZ
9h 56m2 stops
C$ 159WestJet
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Fri, 17 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
C$ 170Alaska Airlines
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Fri, 17 Jan
6:00 a.m. - 7:09 p.m.SEA-YYZ
10h 09m1 stop
C$ 187Delta
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Thu, 16 Jan
11:05 p.m. - 11:59 a.m.SEA-YYZ
9h 54m1 stop
C$ 189Delta
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Fri, 31 Jan
5:00 a.m. - 4:52 p.m.SEA-YYZ
8h 52m1 stop
C$ 190United Airlines
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Sat, 8 Mar
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
C$ 196Air Canada
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Wed, 15 Jan
5:45 a.m. - 6:43 p.m.SEA-YTZ
9h 58m2 stops
C$ 196Air Canada
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Wed, 15 Jan
5:45 a.m. - 8:15 p.m.SEA-YYZ
11h 30m2 stops
C$ 197United Airlines
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Sat, 1 Feb
7:00 p.m. - 11:59 p.m.SEA-YYZ
25h 59m2 stops
10:00 a.m. - 12:19 a.m.YYZ-SEA
17h 19m2 stops
C$ 866
Find Deal
Sat, 21 Dec - Sat, 11 Jan
7:00 p.m. - 11:59 p.m.SEA-YYZ
25h 59m2 stops
9:30 a.m. - 5:00 p.m.YYZ-SEA
10h 30m1 stop
C$ 924
Find Deal
Sat, 21 Dec - Sat, 11 Jan
11:59 p.m. - 4:19 p.m.SEA-YYZ
13h 20m1 stop
5:10 p.m. - 11:31 p.m.YYZ-SEA
9h 21m1 stop
C$ 938American Airlines
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Sat, 21 Dec - Sat, 11 Jan
3:20 p.m. - 5:29 p.m.SEA-YYZ
23h 09m1 stop
10:40 p.m. - 8:05 a.m.YYZ-SEA
12h 25m1 stop
C$ 1,014WestJet
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Sat, 21 Dec - Sun, 29 Dec
1:40 p.m. - 12:40 a.m.SEA-YYZ
8h 00m1 stop
6:15 p.m. - 8:05 a.m.YYZ-SEA
16h 50m1 stop
C$ 1,088WestJet
Find Deal
Mon, 23 Dec - Sun, 29 Dec
12:55 a.m. - 4:19 p.m.SEA-YYZ
12h 24m1 stop
5:10 p.m. - 11:31 p.m.YYZ-SEA
9h 21m1 stop
C$ 1,301American Airlines
Find Deal
Fri, 20 Dec - Sat, 11 Jan
7:26 a.m. - 3:07 p.m.SEA-YYZ
4h 41mdirect
4:22 p.m. - 6:42 p.m.YYZ-SEA
5h 20mdirect
C$ 1,398Alaska Airlines
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Thu, 19 Dec - Wed, 25 Dec
7:26 a.m. - 3:07 p.m.SEA-YYZ
4h 41mdirect
4:22 p.m. - 6:42 p.m.YYZ-SEA
5h 20mdirect
C$ 1,475Alaska Airlines
Find Deal
Thu, 19 Dec - Sun, 29 Dec
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
6:55 p.m. - 9:20 p.m.YYZ-SEA
5h 25mdirect
C$ 1,483Air Canada
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Mon, 23 Dec - Sun, 29 Dec
3:05 p.m. - 12:57 a.m.SEA-YYZ
6h 52m1 stop
11:30 a.m. - 6:25 p.m.YYZ-SEA
9h 55m1 stop
C$ 1,567Air Canada
Find Deal
Fri, 20 Dec - Sat, 4 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 336Alaska Airlines
Find Deal
Sat, 11 Jan - Sat, 18 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 351Alaska Airlines
Find Deal
Tue, 14 Jan - Tue, 21 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 353Alaska Airlines
Find Deal
Wed, 29 Jan - Thu, 30 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
4:20 p.m. - 6:43 p.m.YYZ-SEA
5h 23mdirect
C$ 357Alaska Airlines
Find Deal
Wed, 29 Jan - Thu, 30 Jan
7:27 a.m. - 3:05 p.m.SEA-YYZ
4h 38mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 397
Find Deal
Sat, 11 Jan - Sat, 18 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 413Lufthansa
Find Deal
Sat, 1 Feb - Sat, 8 Feb
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 414Air Canada
Find Deal
Wed, 29 Jan - Thu, 30 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 421Air Canada
Find Deal
Sat, 11 Jan - Tue, 14 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 434United Airlines
Find Deal
Sat, 11 Jan - Tue, 14 Jan
6:05 a.m. - 1:50 p.m.SEA-YYZ
4h 45mdirect
7:05 p.m. - 9:30 p.m.YYZ-SEA
5h 25mdirect
C$ 461United Airlines
Find Deal
Sat, 11 Jan - Sat, 18 Jan

Alaska Airlines flights from Seattle to Toronto

Our best Alaska Airlines deals on Seattle to Toronto flight tickets
Alaska Airlines
11 Jan
SEA7:27 a.m.Seattle/Tacoma Intl
4h 38m
YYZ3:05 p.m.Toronto Pearson Intl
18 Jan
YYZ4:20 p.m.Toronto Pearson Intl
5h 23m
SEA6:43 p.m.Seattle/Tacoma Intl
Alaska Airlines
11 Jan
SEA7:27 a.m.Seattle/Tacoma Intl
4h 38m
YYZ3:05 p.m.Toronto Pearson Intl
14 Jan
YYZ4:20 p.m.Toronto Pearson Intl
5h 23m
SEA6:43 p.m.Seattle/Tacoma Intl
Alaska Airlines
29 Jan
SEA7:27 a.m.Seattle/Tacoma Intl
4h 38m
YYZ3:05 p.m.Toronto Pearson Intl
30 Jan
YYZ4:20 p.m.Toronto Pearson Intl
5h 23m
SEA6:43 p.m.Seattle/Tacoma Intl

WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets
WestJet
11 Jan
SEA3:20 p.m.Seattle/Tacoma Intl
26h 51m
1 stop
YYZ9:11 p.m.Toronto Pearson Intl
14 Jan
YYZ7:55 a.m.Toronto Pearson Intl
9h 26m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl
WestJet
11 Jan
SEA3:20 p.m.Seattle/Tacoma Intl
18h 18m
1 stop
YYZ12:38 p.m.Toronto Pearson Intl
18 Jan
YYZ8:00 p.m.Toronto Pearson Intl
21h 21m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl
WestJet
24 Jan
SEA3:15 p.m.Seattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 a.m.Toronto Pearson Intl
26 Jan
YYZ8:00 p.m.Toronto Pearson Intl
21h 21m
1 stop
SEA2:21 p.m.Seattle/Tacoma Intl

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 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$ 417. The month of September is another great option to travel to Toronto, with average flight prices from Seattle averaging around C$ 583.

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$ 497. 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 Friday will generally be more expensive and average around C$ 747. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Flying to Toronto from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 412 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around C$ 649. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 to Toronto?

The best time to book a flight to Toronto from Seattle is 52 days out, which is when prices tend to be around C$ 750. Keep in mind that you might also find cheap flights to Toronto outside of this time window. In fact, momondo users recently found flights from Seattle to Toronto for C$ 522.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl 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?

You could potentially save up to 3% on your flight if you consider stops on a Seattle to Toronto flight.

How have Seattle to Toronto flight prices changed over time?

As of December 2024, prices for Seattle to Toronto flights are approximately 42% cheaper 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$ 137

Fastest flight time

4h 35m

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$ 137. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is C$ 334.
The fastest flight from Seattle to Toronto takes 4h 35m
Direct flights go from Seattle to Toronto every day.
There are 3 airports near Toronto: Toronto Region of Waterloo Intl (YKF), Toronto Pearson Intl (YYZ), Toronto Island (YTZ)

  • 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 35m.

  • 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
Air CanadaPriceFrom C$ 233Free CancellationRating
7.0
8,382 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom C$ 381Free CancellationRating
8.0
9,552 reviews
Search Alaska Airlines flights
  • Alaska Airlines Flights From Seattle to Toronto

    Alaska Airlines is one of the most popular airlines flying from Seattle to Toronto, operating 1 flight/week on average for this route. A good Alaska Airlines flight deal for Seattle to Toronto starts from C$ 267 round-trip, up to an average price of C$ 466. Our users have rated Alaska Airlines at 8.0/10.

  • Air Canada Flights From Seattle to Toronto

    Another popular option for Seattle to Toronto flights is Air Canada (7.0/10, 8,382 ratings). Air Canada flies from Seattle to Toronto around 3 times per week, with deals starting from C$ 163 round-trip and rising to an average price of around C$ 590.


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

Airports listed have a maximum distance of 83.6 km from Toronto