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

As of October 2026, 2 flights take off from Seattle and land in Toronto each day. The most common flight departure time for this route is 7:00AM, with 100% of daily flights taking off at noon.

Which layover airport offers the lowest fares from Seattle to Toronto?

Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $293.

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

As of October 2026, there are 14 flights per week flying from Seattle to Toronto. The most common day of the week flights depart is Wed, with 36% 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

What airlines fly to Toronto?

Alaska Airlines, WestJet and Air Canada 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 56% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 5 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Seattle to Toronto?

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 7h 02m.

Which airport is the most popular layover for flights between Seattle and Toronto?

Calgary (YYC) was the most common stop: 88% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Seattle to Toronto?

Vancouver (YVR) has the shortest average layover time for this route: 1h 19m.

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?

The number of operators available for flights from Seattle/Tacoma Intl Airport to Toronto is 5 as of October 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 you'll need for your trip to Toronto 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. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$170 Cheap Flights from Seattle to Toronto in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Toronto

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 5:45 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

12h 15m2 stops Calgary Edmonton

7:30 am - 1:40 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 10m1 stop Calgary

$366WestJet

Thu, Dec 24 - Tue, Jan 5

2:30 pm - 5:45 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

12h 15m2 stops Calgary Edmonton

7:30 am - 1:40 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 10m1 stop Calgary

$366WestJet

Tue, Nov 17 - Tue, Nov 24

2:20 pm - 5:45 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

12h 25m2 stops Calgary Edmonton

9:50 am - 6:13 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

11h 23m1 stop San Francisco

$401Multiple Airlines

Sat, Nov 28 - Sat, Dec 5

8:45 am - 9:39 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 54m1 stop San Francisco

7:30 am - 1:40 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 10m1 stop Calgary

$401Multiple Airlines

Thu, Jan 7 - Sun, Jan 17

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

8:05 am - 2:37 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 32m1 stop Vancouver Intl

$436Air Canada

Tue, Nov 3 - Sun, Nov 8

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

5:15 pm - 7:56 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 41mnonstop

$471Alaska Airlines

Sat, Nov 28 - Sat, Dec 5

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

5:15 pm - 7:47 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 32mnonstop

$481Alaska Airlines

Sat, Nov 21 - Wed, Nov 25

10:10 am - 9:09 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

7h 59m1 stop Vancouver Intl

8:05 am - 2:37 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 32m1 stop Vancouver Intl

$491Air Canada

Tue, Nov 10 - Thu, Nov 19

10:35 am - 11:00 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 25m1 stop Detroit Metropolitan Wayne County

5:15 pm - 10:05 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

7h 50m1 stop Detroit Metropolitan Wayne County

$506Delta

Sat, Feb 20 - Sat, Feb 27

12:00 pm - 11:04 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

8h 04m1 stop Minneapolis St Paul

12:10 pm - 7:23 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

10h 13m1 stop New York John F Kennedy Intl

$506Delta

Sat, Jan 16 - Sat, Jan 23

Cheap last minute flights

Enter your travel dates to find the best prices.

5:50 am - 5:35 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

8h 45m1 stop Vancouver Intl

8:05 am - 2:37 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 32m1 stop Vancouver Intl

$424Air Canada

Fri, Oct 23 - Wed, Oct 28

10:50 am - 11:00 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

9h 10m1 stop Vancouver Intl

8:05 am - 2:37 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

9h 32m1 stop Vancouver Intl

$430Air Canada

Sat, Oct 24 - Tue, Oct 27

8:00 am - 3:45 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 45mnonstop

5:15 pm - 7:43 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 28mnonstop

$464Alaska Airlines

Sat, Oct 24 - Thu, Oct 29

8:00 am - 3:45 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 45mnonstop

5:15 pm - 7:43 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 28mnonstop

$464Alaska Airlines

Fri, Oct 23 - Fri, Oct 30

3:30 pm - 6:45 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

12h 15m2 stops Calgary Edmonton

2:15 pm - 1:40 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

26h 25m1 stop Calgary

$617WestJet

Wed, Oct 28 - Wed, Nov 4

11:10 pm - 1:36 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

11h 26m1 stop Detroit Metropolitan Wayne County

4:15 pm - 5:00 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

27h 45m1 stop Vancouver Intl

$620WestJet

Tue, Oct 27 - Wed, Oct 28

7:35 pm - 7:15 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

20h 40m1 stop Calgary

7:30 am - 2:40 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

10h 10m1 stop Calgary

$713Multiple Airlines

Fri, Oct 23 - Tue, Oct 27

3:30 pm - 11:55 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

17h 25m1 stop Calgary

7:00 am - 6:45 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

14h 45m1 stop New York LaGuardia

$714Multiple Airlines

Wed, Oct 28 - Wed, Nov 4

8:55 pm - 8:49 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

8h 54m2 stops Portland Detroit Metropolitan Wayne County

11:38 am - 7:04 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

10h 26m1 stop Atlanta Hartsfield-Jackson

$1,054Delta

Mon, Oct 26 - Sun, Nov 1

8:55 pm - 11:19 amSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

11h 24m2 stops Portland Detroit Metropolitan Wayne County

6:30 am - 10:50 amYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

7h 20m1 stop Minneapolis St Paul

$1,054Delta

Mon, Oct 26 - Sun, Nov 1

Cheap direct flights

Enter your travel dates to find the best prices.

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

5:15 pm - 7:56 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 41mnonstop

$471Alaska Airlines

Sat, Nov 28 - Sat, Dec 5

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

5:15 pm - 7:47 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 32mnonstop

$481Alaska Airlines

Sat, Nov 21 - Wed, Nov 25

8:31 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 34mnonstop

5:15 pm - 7:56 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 41mnonstop

$481Alaska Airlines

Tue, Nov 24 - Tue, Dec 1

8:33 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 32mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$542Multiple Airlines

Sat, Dec 5 - Sat, Dec 12

8:33 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 32mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$567Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

8:33 am - 4:05 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 32mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$571Multiple Airlines

Thu, Dec 3 - Thu, Dec 10

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$663Air Canada

Sat, Nov 28 - Sat, Dec 5

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$692Air Canada

Sat, Nov 28 - Sat, Dec 5

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$993United Airlines

Fri, Nov 13 - Sat, Jan 9

7:45 am - 3:25 pmSEA Seattle/Tacoma Intl-YYZ Toronto Pearson Intl

4h 40mnonstop

6:25 pm - 8:59 pmYYZ Toronto Pearson Intl-SEA Seattle/Tacoma Intl

5h 34mnonstop

$993United Airlines

Thu, Nov 12 - Sat, Jan 9

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WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets

WestJet

Dec 15

SEA2:30 pmSeattle/Tacoma Intl

12h 15m

2 stops

YYZ5:45 amToronto Pearson Intl

Dec 18

YYZ6:10 amToronto Pearson Intl

10h 30m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$362

WestJet

Nov 17

SEA2:30 pmSeattle/Tacoma Intl

12h 15m

2 stops

YYZ5:45 amToronto Pearson Intl

Nov 24

YYZ7:30 amToronto Pearson Intl

9h 10m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$366

WestJet

Dec 24

SEA2:30 pmSeattle/Tacoma Intl

12h 15m

2 stops

YYZ5:45 amToronto Pearson Intl

Dec 31

YYZ6:10 amToronto Pearson Intl

10h 30m

1 stop

SEA1:40 pmSeattle/Tacoma Intl

$368

Air Canada flights from Seattle to Toronto

Our best Air Canada deals on Seattle to Toronto flight tickets

Air Canada

Oct 23

SEA5:50 amSeattle/Tacoma Intl

8h 45m

1 stop

YYZ5:35 pmToronto Pearson Intl

Oct 28

YYZ8:05 amToronto Pearson Intl

9h 32m

1 stop

SEA2:37 pmSeattle/Tacoma Intl

$424

Air Canada

Oct 24

SEA10:50 amSeattle/Tacoma Intl

9h 10m

1 stop

YYZ11:00 pmToronto Pearson Intl

Oct 27

YYZ8:05 amToronto Pearson Intl

9h 32m

1 stop

SEA2:37 pmSeattle/Tacoma Intl

$430

Air Canada

Oct 25

SEA7:05 pmSeattle/Tacoma Intl

8h 47m

1 stop

YYZ6:52 amToronto Pearson Intl

Oct 29

YYZ8:05 amToronto Pearson Intl

9h 32m

1 stop

SEA2:37 pmSeattle/Tacoma Intl

$432

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 12/24

2:30 pm-5:45 am

2 stops12h 15m

Toronto Pearson Intl

Tue 1/5

7:30 am-1:40 pm

1 stop9h 10m

$366

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 11/17

2:30 pm-5:45 am

2 stops12h 15m

Toronto Pearson Intl

Tue 11/24

7:30 am-1:40 pm

1 stop9h 10m

$366

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 11/28

2:20 pm-5:45 am

2 stops12h 25m

Toronto Pearson Intl

Sat 12/5

9:50 am-6:13 pm

1 stop11h 23m

$401

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Thu 1/7

8:45 am-9:39 pm

1 stop9h 54m

Toronto Pearson Intl

Sun 1/17

7:30 am-1:40 pm

1 stop9h 10m

$401

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 11/3

7:45 am-3:25 pm

Nonstop4h 40m

Toronto Pearson Intl

Sun 11/8

8:05 am-2:37 pm

1 stop9h 32m

$436

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 11/28

8:31 am-4:05 pm

Nonstop4h 34m

Toronto Pearson Intl

Sat 12/5

5:15 pm-7:56 pm

Nonstop5h 41m

$471

Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 11/21

8:31 am-4:05 pm

Nonstop4h 34m

Toronto Pearson Intl

Wed 11/25

5:15 pm-7:47 pm

Nonstop5h 32m

$481

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Tue 11/10

10:10 am-9:09 pm

1 stop7h 59m

Toronto Pearson Intl

Thu 11/19

8:05 am-2:37 pm

1 stop9h 32m

$491

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 2/20

10:35 am-11:00 pm

1 stop9h 25m

Toronto Pearson Intl

Sat 2/27

5:15 pm-10:05 pm

1 stop7h 50m

$506

SeattleToronto

SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl

SEAYYZ

Seattle/Tacoma Intl

Sat 1/16

12:00 pm-11:04 pm

1 stop8h 04m

Toronto Pearson Intl

Sat 1/23

12:10 pm-7:23 pm

1 stop10h 13m

$506

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

Layovers

Other information

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 $388 to $583.
The lowest price recently found on this route was $362.

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 $255. If you are unable to visit Toronto during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $289.

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

On average, the least expensive day to fly to Toronto from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $562. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Sunday, with ticket prices averaging around $773.

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 $426 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 $318 on momondo.

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

There are 4 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 October 2026, prices for Seattle to Toronto flights are approximately 31% 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	$170
Fastest flight time	4h 32m
Direct flights	Every day
Airports in Toronto	3 airports

The best one-way flight to Toronto from Seattle in the past 72 hours is $170. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is $366.

The fastest flight from Seattle to Toronto takes 4h 32m

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?
Seattle/Tacoma Intl and Toronto are 2065.1 mi apart from one another. By plane, this route typically takes 4h 32m.
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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Toronto is 5 as of October 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 you'll need for your trip to Toronto 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. 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?
Based on momondo bookings for flights between Seattle and Toronto, the leading plane model is Airbus A220-300, making up 18.45% of the total bookings. Other popular models include Airbus A321neo with 8.74%, Boeing 737-900 Passenger/BBJ3 (winglets) with 8.25%, and Boeing 737 MAX 8 with 6.80%.
What is the most popular airline from Seattle to Toronto?
momondo data reveals that the most frequently booked airline on the route from Seattle to Toronto is Alaska Airlines, representing 52% of all bookings. The subsequent popular airlines are Air Canada at 21%, WestJet at 18%, and Delta at 5%.

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
Delta	PriceFrom $132	Free Cancellation	Rating 7.8 8,662 reviews	Search Delta flights
Air Canada	PriceFrom $132	Free Cancellation	Rating 7.1 11,794 reviews	Search Air Canada flights
WestJet	PriceFrom $240	Free Cancellation	Rating 7.2 3,446 reviews	Search WestJet flights
Alaska Airlines	PriceFrom $245	Free Cancellation	Rating 7.9 13,108 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $277	Free Cancellation	Rating 7.3 10,405 reviews	Search United Airlines flights

Alaska Airlines Flights From Seattle to Toronto
Alaska Airlines flight deals from Seattle to Toronto start from $245 round-trip. Over the 3 Alaska Airlines flights for this route in a normal week, average airfare is usually $520 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Seattle to Toronto
United Airlines is also a popular choice for this route. United Airlines flight deals for Seattle to Toronto start from as low as $277 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $579. United Airlines operates 4 flights to Toronto from Seattle in an average week. Users have rated it 7.3/10 across 10,404 reviews.

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?

momondo does allow users to show only those flights to Toronto from Seattle which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Toronto.

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

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.

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Sat 11/21

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Find better results for your trip to Canada

Nearby airports

Airlines

Cabin classes

Other Canada destinations

Other flights from Seattle

Complete your trip

Feeling lucky

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 $170

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 11/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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Filter for what you want

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WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets

Air Canada flights from Seattle to Toronto

Our best Air Canada deals on Seattle to Toronto flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Seattle to Toronto that are best for you.

See travel insights to Toronto from

How to get the cheapest flight ticket from Seattle to Toronto

What is the typical price of a round-trip flight between Seattle and 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 from Seattle to Toronto?

What cabin class options are available on Seattle 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?

What airlines fly to Toronto?

Which airport is the most popular layover for flights between Seattle and Toronto?

Which layover airport offers the lowest fares from Seattle to Toronto?

Which layover airport has the shortest travel time from Seattle to Toronto?

Which layover airport has the shortest connection time from Seattle 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

Best Price Found

Fastest flight time

Direct flights

Airports in Toronto

Frequently asked questions about flying 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

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 52.0 mi from Toronto

Fly your favorite 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

Fly to other destinations from Seattle

According to popular flight searches on momondo this year

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