Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Toronto from C$ 132

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 22/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

WestJet Logo
1:15 p.m. - 12:31 a.m.SEA-YYZ
8h 16m1 stop
WestJet Logo
6:45 a.m. - 12:33 p.m.YYZ-SEA
8h 48m1 stop
C$ 312WestJet
Find Deal
Fri, 19 Sep - Sun, 21 Sep
Air Canada Logo
10:00 a.m. - 9:51 p.m.SEA-YYZ
8h 51m1 stop
Air Canada Logo
8:40 a.m. - 10:59 a.m.YYZ-SEA
5h 19mdirect
C$ 313Air Canada
Find Deal
Sat, 13 Sep - Sun, 21 Sep
Air Canada Logo
10:00 a.m. - 7:50 p.m.SEA-YYZ
6h 50m1 stop
Air Canada Logo
8:00 a.m. - 6:36 p.m.YYZ-SEA
13h 36m1 stop
C$ 332Air Canada
Find Deal
Sat, 13 Sep - Sun, 21 Sep
WestJet Logo
7:35 p.m. - 6:12 a.m.SEA-YYZ
7h 37m1 stop
WestJet Logo
12:00 p.m. - 8:29 p.m.YYZ-SEA
11h 29m2 stops
C$ 334WestJet
Find Deal
Wed, 27 Aug - Wed, 3 Sep
WestJet Logo
7:35 p.m. - 6:12 a.m.SEA-YYZ
7h 37m1 stop
WestJet Logo
12:00 p.m. - 7:14 p.m.YYZ-SEA
10h 14m2 stops
C$ 335WestJet
Find Deal
Tue, 26 Aug - Tue, 2 Sep
WestJet Logo
1:50 p.m. - 12:24 a.m.SEA-YYZ
7h 34m1 stop
WestJet Logo
9:00 a.m. - 6:38 p.m.YYZ-SEA
12h 38m2 stops
C$ 337WestJet
Find Deal
Wed, 20 Aug - Tue, 26 Aug
WestJet Logo
1:50 p.m. - 12:24 a.m.SEA-YYZ
7h 34m1 stop
WestJet Logo
8:00 a.m. - 12:59 p.m.YYZ-SEA
7h 59m1 stop
C$ 338WestJet
Find Deal
Wed, 27 Aug - Wed, 3 Sep
WestJet Logo
1:15 p.m. - 12:31 a.m.SEA-YYZ
8h 16m1 stop
WestJet Logo
6:45 a.m. - 12:33 p.m.YYZ-SEA
8h 48m1 stop
C$ 339WestJet
Find Deal
Fri, 5 Sep - Sun, 7 Sep
Air Canada Logo
12:00 p.m. - 7:44 p.m.SEA-YYZ
4h 44mdirect
Air Canada Logo
8:40 a.m. - 10:59 a.m.YYZ-SEA
5h 19mdirect
C$ 356Air Canada
Find Deal
Sun, 7 Sep - Sat, 20 Sep
Alaska Airlines Logo
7:16 a.m. - 3:00 p.m.SEA-YYZ
4h 44mdirect
Alaska Airlines Logo
4:45 p.m. - 7:08 p.m.YYZ-SEA
5h 23mdirect
C$ 371Alaska Airlines
Find Deal
Tue, 9 Sep - Tue, 16 Sep

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
19 Sep
SEA1:15 p.m.Seattle/Tacoma Intl
8h 16m
1 stop
YYZ12:31 a.m.Toronto Pearson Intl
21 Sep
YYZ6:45 a.m.Toronto Pearson Intl
8h 48m
1 stop
SEA12:33 p.m.Seattle/Tacoma Intl
C$ 312
Find similar
WestJet
27 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
7h 37m
1 stop
YYZ6:12 a.m.Toronto Pearson Intl
3 Sep
YYZ12:00 p.m.Toronto Pearson Intl
11h 29m
2 stops
SEA8:29 p.m.Seattle/Tacoma Intl
C$ 334
Find similar
WestJet
26 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
7h 37m
1 stop
YYZ6:12 a.m.Toronto Pearson Intl
2 Sep
YYZ12:00 p.m.Toronto Pearson Intl
10h 14m
2 stops
SEA7:14 p.m.Seattle/Tacoma Intl
C$ 335
Find similar

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
13 Sep
SEA10:00 a.m.Seattle/Tacoma Intl
8h 51m
1 stop
YYZ9:51 p.m.Toronto Pearson Intl
21 Sep
YYZ8:40 a.m.Toronto Pearson Intl
5h 19m
SEA10:59 a.m.Seattle/Tacoma Intl
C$ 313
Find similar
Air Canada
13 Sep
SEA10:00 a.m.Seattle/Tacoma Intl
6h 50m
1 stop
YYZ7:50 p.m.Toronto Pearson Intl
21 Sep
YYZ8:00 a.m.Toronto Pearson Intl
13h 36m
1 stop
SEA6:36 p.m.Seattle/Tacoma Intl
C$ 332
Find similar
Air Canada
7 Sep
SEA12:00 p.m.Seattle/Tacoma Intl
4h 44m
YYZ7:44 p.m.Toronto Pearson Intl
20 Sep
YYZ8:40 a.m.Toronto Pearson Intl
5h 19m
SEA10:59 a.m.Seattle/Tacoma Intl
C$ 356
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 31 July 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 19/9

1:15 p.m.-12:31 a.m.

1 stop8h 16m

Toronto Pearson Intl

Sun 21/9

6:45 a.m.-12:33 p.m.

1 stop8h 48m

C$ 312

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 13/9

10:00 a.m.-9:51 p.m.

1 stop8h 51m

Toronto Pearson Intl

Sun 21/9

8:40 a.m.-10:59 a.m.

Nonstop5h 19m

C$ 313

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 13/9

10:00 a.m.-7:50 p.m.

1 stop6h 50m

Toronto Pearson Intl

Sun 21/9

8:00 a.m.-6:36 p.m.

1 stop13h 36m

C$ 332

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 27/8

7:35 p.m.-6:12 a.m.

1 stop7h 37m

Toronto Pearson Intl

Wed 3/9

12:00 p.m.-8:29 p.m.

2 stops11h 29m

C$ 334

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 26/8

7:35 p.m.-6:12 a.m.

1 stop7h 37m

Toronto Pearson Intl

Tue 2/9

12:00 p.m.-7:14 p.m.

2 stops10h 14m

C$ 335

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 20/8

1:50 p.m.-12:24 a.m.

1 stop7h 34m

Toronto Pearson Intl

Tue 26/8

9:00 a.m.-6:38 p.m.

2 stops12h 38m

C$ 337

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 27/8

1:50 p.m.-12:24 a.m.

1 stop7h 34m

Toronto Pearson Intl

Wed 3/9

8:00 a.m.-12:59 p.m.

1 stop7h 59m

C$ 338

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 5/9

1:15 p.m.-12:31 a.m.

1 stop8h 16m

Toronto Pearson Intl

Sun 7/9

6:45 a.m.-12:33 p.m.

1 stop8h 48m

C$ 339

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 7/9

12:00 p.m.-7:44 p.m.

Nonstop4h 44m

Toronto Pearson Intl

Sat 20/9

8:40 a.m.-10:59 a.m.

Nonstop5h 19m

C$ 356

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/9

7:16 a.m.-3:00 p.m.

Nonstop4h 44m

Toronto Pearson Intl

Tue 16/9

4:45 p.m.-7:08 p.m.

Nonstop5h 23m

C$ 371

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Toronto from

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 March instead. Flights to Toronto Pearson Intl Airport in March, while not as cheap as those in January, still average around C$ 436.

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$ 497. 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$ 1,224.

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 evening. Our users have found flights to Toronto Pearson Intl Airport in the evening for as low as C$ 266. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 953 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$ 580 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$ 403 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?

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

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

As of July 2025, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 44% 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$ 132

Fastest flight time

4h 42m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 132. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 312.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 42m
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 44m 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
Air CanadaPriceFrom C$ 190Free CancellationRating
7.1
9,851 reviews
Search Air Canada flights
WestJetPriceFrom C$ 296Free CancellationRating
7.2
2,978 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 421Free CancellationRating
8.0
10,000 reviews
Search Alaska 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$ 526, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 305 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 9,851 reviews) operates around 7 flights from Seattle to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 418, with deals from around C$ 138 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
Markham
Muskoka
Barrie
Niagara-on-the-Lake
Vaughan
Guelph
Brantford
Kitchener
Burlington
Orillia
Peterborough
Cambridge
Gravenhurst
Oakville
St. Catharines

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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 5/8
Tue 12/8
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Toronto