How many flights depart from Seattle to Toronto on average per week?

As of March 2026, there are 36 flights per week flying from Seattle to Toronto. The most common day of the week flights depart is Sun, with 17% of flights taking off on this day.

What is the cheapest airline that flies from Seattle/Tacoma Intl to Toronto?

Alaska Airlines, Delta, and WestJet are the most popular carriers operating from Seattle/Tacoma Intl to Toronto

Which airlines fly to Toronto?

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Toronto from Seattle according to our data. Alaska Airlines is the first choice among our users, with 63% of people opting to fly with this airline when travelling to Toronto. Keep in mind that there are 3 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.

How many flights depart from Seattle to Toronto on average per day?

5 flights are operational daily from Seattle to Toronto as of March 2026. The most popular departure time for this route is 7:00a.m., with 96% of flights per day taking off at noon.

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?

There are 3 operators available for flights from Seattle/Tacoma Intl Airport to Toronto as of March 2026.

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.

C$ 136 Cheap Flights from Seattle to Toronto in 2026

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Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:00 a.m. - 3:54 p.m.

SEA

YYZ

4h 54mdirect

12:30 a.m. - 10:05 a.m.

YYZ

SEA

12h 35m

2 stops

C$ 324Air Canada

Sat, 25 Apr - Fri, 1 May

8:00 a.m. - 3:54 p.m.

SEA

YYZ

4h 54mdirect

12:30 a.m. - 9:50 a.m.

YYZ

SEA

12h 20m

2 stops

C$ 331Air Canada

Sat, 25 Apr - Fri, 1 May

8:00 a.m. - 3:54 p.m.

SEA

YYZ

4h 54mdirect

4:55 p.m. - 7:23 p.m.

YYZ

SEA

5h 28mdirect

C$ 333Multiple Airlines

Sat, 25 Apr - Sat, 2 May

8:00 a.m. - 3:50 p.m.

SEA

YYZ

4h 50mdirect

12:30 a.m. - 9:50 a.m.

YYZ

SEA

12h 20m

2 stops

C$ 337Air Canada

Sat, 2 May - Fri, 8 May

7:55 a.m. - 3:45 p.m.

SEA

YYZ

4h 50mdirect

4:55 p.m. - 7:23 p.m.

YYZ

SEA

5h 28mdirect

C$ 339Alaska Airlines

Sat, 25 Apr - Sat, 2 May

10:30 a.m. - 1:13 a.m.

SEA

YYZ

11h 43m

2 stops

12:30 a.m. - 9:50 a.m.

YYZ

SEA

12h 20m

2 stops

C$ 342Air Canada

Sat, 2 May - Fri, 8 May

10:20 a.m. - 11:46 p.m.

SEA

YYZ

10h 26m

2 stops

6:45 p.m. - 9:08 p.m.

YYZ

SEA

5h 23mdirect

C$ 347Air Canada

Sat, 25 Apr - Sat, 2 May

2:55 p.m. - 1:38 a.m.

SEA

YYZ

7h 43m

1 stop

6:45 p.m. - 9:08 p.m.

YYZ

SEA

5h 23mdirect

C$ 357Air Canada

Tue, 5 May - Tue, 12 May

3:10 p.m. - 5:29 a.m.

SEA

YKF

11h 19m

1 stop

8:40 p.m. - 9:40 a.m.

YKF

SEA

16h 00m

1 stop

C$ 495WestJet

Wed, 22 Apr - Mon, 27 Apr

3:10 p.m. - 5:29 a.m.

SEA

YKF

11h 19m

1 stop

8:40 p.m. - 9:40 a.m.

YKF

SEA

16h 00m

1 stop

C$ 501WestJet

Sun, 19 Apr - Sun, 26 Apr

Alaska Airlines flights from Seattle to Toronto

Our best Alaska Airlines deals on Seattle to Toronto flight tickets

Alaska Airlines

25 Apr

SEA7:55 a.m.Seattle/Tacoma Intl

4h 50m

YYZ3:45 p.m.Toronto Pearson Intl

2 May

YYZ4:55 p.m.Toronto Pearson Intl

5h 28m

SEA7:23 p.m.Seattle/Tacoma Intl

C$ 339

Alaska Airlines

25 Apr

SEA7:55 a.m.Seattle/Tacoma Intl

4h 50m

YYZ3:45 p.m.Toronto Pearson Intl

2 May

YYZ4:55 p.m.Toronto Pearson Intl

5h 28m

SEA7:23 p.m.Seattle/Tacoma Intl

C$ 373

Alaska Airlines

24 Apr

SEA12:29 a.m.Seattle/Tacoma Intl

7h 24m

1 stop

YYZ10:53 a.m.Toronto Pearson Intl

2 May

YYZ4:55 p.m.Toronto Pearson Intl

5h 28m

SEA7:23 p.m.Seattle/Tacoma Intl

C$ 412

WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets

WestJet

10 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

11h 48m

2 stops

YYZ5:58 a.m.Toronto Pearson Intl

16 Apr

YYZ7:45 a.m.Toronto Pearson Intl

9h 34m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

C$ 438

WestJet

10 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

11h 48m

2 stops

YYZ5:58 a.m.Toronto Pearson Intl

14 Apr

YYZ7:45 a.m.Toronto Pearson Intl

9h 34m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

C$ 439

WestJet

17 Apr

SEA3:10 p.m.Seattle/Tacoma Intl

11h 48m

2 stops

YYZ5:58 a.m.Toronto Pearson Intl

20 Apr

YYZ7:45 a.m.Toronto Pearson Intl

9h 34m

1 stop

SEA2:19 p.m.Seattle/Tacoma Intl

C$ 449

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Fri 1/5

12:30 a.m.-10:05 a.m.

2 stops12h 35m

C$ 324

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Fri 1/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 331

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-7:23 p.m.

Nonstop5h 28m

C$ 333

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 2/5

8:00 a.m.-3:50 p.m.

Nonstop4h 50m

Toronto Pearson Intl

Fri 8/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 337

Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

7:55 a.m.-3:45 p.m.

Nonstop4h 50m

Toronto Pearson Intl

Sat 2/5

4:55 p.m.-7:23 p.m.

Nonstop5h 28m

C$ 339

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 2/5

10:30 a.m.-1:13 a.m.

2 stops11h 43m

Toronto Pearson Intl

Fri 8/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 342

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

10:20 a.m.-11:46 p.m.

2 stops10h 26m

Toronto Pearson Intl

Sat 2/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 347

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 5/5

2:55 p.m.-1:38 a.m.

1 stop7h 43m

Toronto Pearson Intl

Tue 12/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 357

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Wed 22/4

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Mon 27/4

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 495

SeattleToronto

SEA - YKF

SEAYKF

Seattle/Tacoma Intl

Sun 19/4

3:10 p.m.-5:29 a.m.

1 stop11h 19m

Toronto Region of Waterloo Intl

Sun 26/4

8:40 p.m.-9:40 a.m.

1 stop16h 00m

C$ 501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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$ 343. The month of November is another great option to travel to Toronto, with average flight prices from Seattle averaging around C$ 376.

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

According to our data, Wednesday is the cheapest day to fly to Toronto from Seattle. The lowest ticket price found for a Wednesday departure recently was C$ 532. 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$ 936. 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 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$ 522 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$ 332 on momondo.

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?

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 March 2026, 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$ 217
Fastest flight time	4h 40m
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$ 217. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is C$ 535.

The fastest flight from Seattle to Toronto takes 4h 40m

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

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 40m.
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?
There are 3 operators available for flights from Seattle/Tacoma Intl Airport to Toronto as of March 2026.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Toronto is Airbus A320-100/200 (16.72% of total bookings). The next most popular plane models are Airbus A330-900neo (16.39%), Airbus A330-200 (12.71%), and Boeing 737 MAX 8 (8.03%).
What is the most popular airline from Seattle to Toronto?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Toronto is Alaska Airlines (44% of total bookings). The next most popular airlines are WestJet (29%) and Air Canada (27%).

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
WestJet	PriceFrom C$ 283	Free Cancellation	Rating 7.2 3,300 reviews	Search WestJet flights
Alaska Airlines	PriceFrom C$ 303	Free Cancellation	Rating 7.9 12,098 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom C$ 362	Free Cancellation	Rating 7.1 10,835 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 7 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Toronto starts from C$ 303 round-trip, up to an average price of C$ 699. 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, 10,835 ratings). Air Canada flies from Seattle to Toronto around 7 times per week, with deals starting from C$ 362 round-trip and rising to an average price of around C$ 458.

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.

An easier way to manage your Toronto trip

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Fly into one of these airports located in Toronto

Toronto Region of Waterloo Intl Airport

Toronto Island Airport

Toronto Pearson Intl Airport

Cheap flights from Seattle to Toronto from C$ 150

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 25/4. 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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Alaska Airlines flights from Seattle to Toronto

Our best Alaska Airlines deals on Seattle to Toronto flight tickets

WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets

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See travel insights to Toronto from

How to get the cheapest flight ticket from Seattle to Toronto

What is the cheapest month to fly to Toronto?

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

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

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

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

Can stopping save me money on Seattle to Toronto flights?

How have Seattle to Toronto flight prices changed over time?

What is the cheapest airline that flies from Seattle/Tacoma Intl to Toronto?

Which airlines fly to Toronto?

How many flights depart from Seattle to Toronto on average per day?

How many flights depart from Seattle to Toronto on average per week?

When to book flights from Seattle to Toronto

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

Fastest flight time

Direct flights

Airports in Toronto

Best airlines flying from Seattle to Toronto

Compare and see reviews for airlines that fly from Seattle to Toronto with momondo

Alaska Airlines Flights From Seattle to Toronto

Air Canada Flights From Seattle to Toronto

Travelling to a place near Toronto?

Why use momondo?

An easier way to manage your Toronto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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

Fly your favourite airline to Toronto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Toronto

List of cabin classes available on flights landing in Toronto. Availability may vary depending on flight origin and airline.

Popular Cities in Canada

Popular flights according to clicks in the last 7 days on momondo

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