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Cheap flights from Seattle to Toronto from C$ 141

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 29/11. 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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Cheap round-trip flights

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WestJet Logo
11:55 a.m. - 6:58 a.m.SEA-YYZ
16h 03m1 stop
WestJet Logo
7:45 a.m. - 2:20 p.m.YYZ-SEA
9h 35m1 stop
C$ 315WestJet
Find Deal
Fri, 9 Jan - Sun, 11 Jan
Alaska Airlines Logo
7:57 a.m. - 3:35 p.m.SEA-YYZ
4h 38mdirect
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.YYZ-SEA
5h 33mdirect
C$ 319Alaska Airlines
Find Deal
Sat, 29 Nov - Tue, 2 Dec
WestJet Logo
11:55 a.m. - 11:39 p.m.SEA-YYZ
8h 44m2 stops
WestJet Logo
7:45 a.m. - 2:20 p.m.YYZ-SEA
9h 35m1 stop
C$ 323WestJet
Find Deal
Sat, 29 Nov - Tue, 2 Dec
WestJet Logo
3:10 p.m. - 6:58 a.m.SEA-YYZ
12h 48m2 stops
WestJet Logo
7:45 a.m. - 2:20 p.m.YYZ-SEA
9h 35m1 stop
C$ 327WestJet
Find Deal
Fri, 9 Jan - Sun, 11 Jan
WestJet Logo
3:10 p.m. - 5:58 a.m.SEA-YYZ
11h 48m2 stops
WestJet Logo
7:45 a.m. - 2:20 p.m.YYZ-SEA
9h 35m1 stop
C$ 333WestJet
Find Deal
Fri, 12 Dec - Tue, 16 Dec
WestJet Logo
3:10 p.m. - 5:58 a.m.SEA-YYZ
11h 48m2 stops
WestJet Logo
7:45 a.m. - 2:19 p.m.YYZ-SEA
9h 34m1 stop
C$ 336WestJet
Find Deal
Sun, 15 Feb - Tue, 17 Feb
WestJet Logo
3:10 p.m. - 5:58 a.m.SEA-YYZ
11h 48m2 stops
WestJet Logo
7:45 a.m. - 2:20 p.m.YYZ-SEA
9h 35m1 stop
C$ 339WestJet
Find Deal
Thu, 4 Dec - Sun, 7 Dec
Air Canada Logo
8:10 a.m. - 3:53 p.m.SEA-YYZ
4h 43mdirect
Air Canada Logo
7:50 p.m. - 10:16 p.m.YYZ-SEA
5h 26mdirect
C$ 346Air Canada
Find Deal
Sat, 6 Dec - Sat, 13 Dec
Alaska Airlines Logo
7:57 a.m. - 3:35 p.m.SEA-YYZ
4h 38mdirect
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.YYZ-SEA
5h 33mdirect
C$ 350Alaska Airlines
Find Deal
Sat, 29 Nov - Wed, 3 Dec
Air Canada Logo
8:00 p.m. - 5:59 a.m.SEA-YYZ
6h 59m1 stop
Air Canada Logo
8:15 a.m. - 2:31 p.m.YYZ-SEA
9h 16m2 stops
C$ 352Air Canada
Find Deal
Sat, 6 Dec - Sat, 13 Dec

Air Canada flights from Seattle to Toronto Pearson Intl Airport

Our best Air Canada deals on Seattle to Toronto Pearson Intl Airport flight tickets
Air Canada
6 Dec
SEA8:10 a.m.Seattle/Tacoma Intl
4h 43m
YYZ3:53 p.m.Toronto Pearson Intl
13 Dec
YYZ7:50 p.m.Toronto Pearson Intl
5h 26m
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 346
Find similar
Air Canada
6 Dec
SEA8:00 p.m.Seattle/Tacoma Intl
6h 59m
1 stop
YYZ5:59 a.m.Toronto Pearson Intl
13 Dec
YYZ8:15 a.m.Toronto Pearson Intl
9h 16m
2 stops
SEA2:31 p.m.Seattle/Tacoma Intl
C$ 352
Find similar
Air Canada
29 Nov
SEA10:05 a.m.Seattle/Tacoma Intl
9h 36m
2 stops
YYZ10:41 p.m.Toronto Pearson Intl
6 Dec
YYZ7:50 p.m.Toronto Pearson Intl
5h 26m
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 371
Find similar

Alaska Airlines flights from Seattle to Toronto Pearson Intl Airport

Our best Alaska Airlines deals on Seattle to Toronto Pearson Intl Airport flight tickets
Alaska Airlines
29 Nov
SEA7:57 a.m.Seattle/Tacoma Intl
4h 38m
YYZ3:35 p.m.Toronto Pearson Intl
2 Dec
YYZ4:45 p.m.Toronto Pearson Intl
5h 33m
SEA7:18 p.m.Seattle/Tacoma Intl
C$ 319
Find similar
Alaska Airlines
29 Nov
SEA7:57 a.m.Seattle/Tacoma Intl
4h 38m
YYZ3:35 p.m.Toronto Pearson Intl
3 Dec
YYZ4:45 p.m.Toronto Pearson Intl
5h 33m
SEA7:18 p.m.Seattle/Tacoma Intl
C$ 350
Find similar
Alaska Airlines
19 Nov
SEA7:55 a.m.Seattle/Tacoma Intl
4h 40m
YYZ3:35 p.m.Toronto Pearson Intl
21 Nov
YYZ4:45 p.m.Toronto Pearson Intl
5h 32m
SEA7:17 p.m.Seattle/Tacoma Intl
C$ 365
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Pearson Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 30 October 2025.
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

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 9/1

11:55 a.m.-6:58 a.m.

1 stop16h 03m

Toronto Pearson Intl

Sun 11/1

7:45 a.m.-2:20 p.m.

1 stop9h 35m

C$ 315

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 29/11

7:57 a.m.-3:35 p.m.

Nonstop4h 38m

Toronto Pearson Intl

Tue 2/12

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

C$ 319

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 29/11

11:55 a.m.-11:39 p.m.

2 stops8h 44m

Toronto Pearson Intl

Tue 2/12

7:45 a.m.-2:20 p.m.

1 stop9h 35m

C$ 323

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 9/1

3:10 p.m.-6:58 a.m.

2 stops12h 48m

Toronto Pearson Intl

Sun 11/1

7:45 a.m.-2:20 p.m.

1 stop9h 35m

C$ 327

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 12/12

3:10 p.m.-5:58 a.m.

2 stops11h 48m

Toronto Pearson Intl

Tue 16/12

7:45 a.m.-2:20 p.m.

1 stop9h 35m

C$ 333

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 15/2

3:10 p.m.-5:58 a.m.

2 stops11h 48m

Toronto Pearson Intl

Tue 17/2

7:45 a.m.-2:19 p.m.

1 stop9h 34m

C$ 336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 4/12

3:10 p.m.-5:58 a.m.

2 stops11h 48m

Toronto Pearson Intl

Sun 7/12

7:45 a.m.-2:20 p.m.

1 stop9h 35m

C$ 339

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 6/12

8:10 a.m.-3:53 p.m.

Nonstop4h 43m

Toronto Pearson Intl

Sat 13/12

7:50 p.m.-10:16 p.m.

Nonstop5h 26m

C$ 346

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 29/11

7:57 a.m.-3:35 p.m.

Nonstop4h 38m

Toronto Pearson Intl

Wed 3/12

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

C$ 350

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 6/12

8:00 p.m.-5:59 a.m.

1 stop6h 59m

Toronto Pearson Intl

Sat 13/12

8:15 a.m.-2:31 p.m.

2 stops9h 16m

C$ 352

Flights are sorted by cheapest round-trip flights first.

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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 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$ 447.

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

Our data shows that Wednesday 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$ 502. When flying out on a Tuesday, 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$ 1,116.

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

Our data shows that the cheapest Seattle to Toronto Pearson Intl Airport flights are usually those with departure times in the afternoon. Our users have found flights to Toronto Pearson Intl Airport in the afternoon for as low as C$ 482. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 945 on average. Flights to Toronto Pearson Intl Airport from Seattle in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 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$ 579 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$ 407 on momondo.

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

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

You could potentially save up to 13% on your flight if you consider stops on a Seattle to Toronto Pearson Intl Airport flight.

How have Seattle to Toronto Pearson Intl Airport flight prices changed over time?

As of October 2025, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 48% 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$ 222

Fastest flight time

4h 35m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 222. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 379.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 35m
Direct flights go from Seattle to Toronto Pearson Intl Airport every day.
Search flight deals

  • 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 35m 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
WestJetPriceFrom C$ 288Free CancellationRating
7.2
3,149 reviews
Search WestJet flights
Air CanadaPriceFrom C$ 326Free CancellationRating
7.1
10,378 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom C$ 372Free CancellationRating
8.0
11,214 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom C$ 484Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 4 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$ 756, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 372 round-trip. Alaska Airlines has been scored 8.0/10 in 11,214 reviews.

  • United Airlines Flights From Seattle to Toronto Pearson Intl Airport

    United Airlines (7.4/10 from 8,998 reviews) operates around 3 flights from Seattle to Toronto Pearson Intl Airport in any given week. The average United Airlines airfare for this route is around C$ 543, with deals from around C$ 484 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
Muskoka
Barrie
Markham
Guelph
Niagara-on-the-Lake
Vaughan
Kitchener
Brantford
Burlington
Orillia
Peterborough
Cambridge
Gravenhurst
St. Catharines
Pickering

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.

An easier way to manage your Toronto Pearson Intl Airport trip

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