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Pearson Intl

$110+ Cheap flights from Seattle (SEA) to Pearson Intl (YYZ)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
May 23 — May 301
Sat 5/23
Sat 5/30
1 adult, Economy
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Find cheap flights from Seattle to Pearson Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Toronto Pearson Intl are usually found in January or February, booked 67 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Seattle to Pearson Intl

Cheapest flights from Seattle to Pearson Intl
Explore the most affordable flight options available from Seattle to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.

This Trip.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/307:35 pm
SEA
-
YYZ
1 stop8h 20m
WestJet
Fri 6/512:00 pm
YYZ
-
SEA
1 stop9h 45m
WestJet
Deal found 4/20$258
This Trip.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/510:30 am
SEA
-
YYZ
1 stop9h 15m
WestJet
Fri 5/81:30 pm
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 4/21$259
This Trip.com deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:35 pm
SEA
-
YYZ
1 stop8h 20m
WestJet
Tue 5/1912:00 pm
YYZ
-
SEA
1 stop9h 45m
WestJet
Deal found 4/19$262
This Mytrip deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/510:30 am
SEA
-
YYZ
2 stops10h 29m
Multiple Airlines
Thu 6/1112:30 am
YYZ
-
SEA
2 stops12h 38m
Multiple Airlines
Deal found 4/21$263
This Justfly.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:35 pm
SEA
-
YYZ
1 stop8h 20m
WestJet
Mon 8/102:50 pm
YYZ
-
SEA
1 stop9h 10m
WestJet
Deal found 4/21$264
This Justfly.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:35 pm
SEA
-
YYZ
1 stop7h 10m
WestJet
Thu 7/93:50 pm
YYZ
-
SEA
1 stop8h 10m
WestJet
Deal found 4/22$265
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/307:35 pm
SEA
-
YYZ
1 stop7h 10m
WestJet
Sun 7/2610:50 am
YYZ
-
SEA
1 stop10h 55m
WestJet
Deal found 4/21$266
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/297:35 pm
SEA
-
YYZ
1 stop13h 20m
WestJet
Thu 7/233:50 pm
YYZ
-
SEA
1 stop8h 10m
WestJet
Deal found 4/21$267
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:35 pm
SEA
-
YYZ
1 stop8h 20m
WestJet
Tue 7/141:30 pm
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 4/21$268
This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/117:35 pm
SEA
-
YYZ
1 stop8h 20m
WestJet
Sun 8/210:25 pm
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 4/22$269
This Booking.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/110:30 am
SEA
-
YYZ
2 stops10h 29m
WestJet
Fri 7/1012:00 pm
YYZ
-
SEA
2 stops9h 45m
WestJet
Deal found 4/22$270
This Kiwi.com deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/67:35 pm
SEA
-
YYZ
1 stop7h 10m
WestJet
Fri 5/1510:25 pm
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 4/21$271

Find flight deals from Seattle to Pearson Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Pearson Intl (YYZ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$258
(Trip.com)

One-way from

$110
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$348

Good round-trip deal

$505 or less

Good one-way deal

$317 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto Pearson Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto Pearson Intl flights.
Search Deals
From Seattle/Tacoma Intl to Toronto Pearson Intl
Search Deals
One-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Pearson Intl 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, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
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

Cheapest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 5/9

5:30 am-3:19 pm

1 stop6h 49m

Toronto Pearson Intl

Mon 5/25

6:10 am-2:50 pm

1 stop11h 40m

$336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 5/29

10:40 pm-9:54 am

1 stop8h 14m

Toronto Pearson Intl

Wed 6/3

4:18 pm-9:10 pm

1 stop7h 52m

$336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 5/27

6:00 am-5:15 pm

1 stop8h 15m

Toronto Pearson Intl

Sun 6/7

2:29 pm-10:34 pm

1 stop11h 05m

$336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 5/25

5:07 am-9:32 pm

1 stop13h 25m

Toronto Pearson Intl

Thu 5/28

3:00 pm-11:44 pm

1 stop11h 44m

$336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 5/8

7:30 am-9:55 pm

1 stop11h 25m

Toronto Pearson Intl

Sun 5/10

6:10 am-2:50 pm

1 stop11h 40m

$336

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 5/25

6:00 am-9:55 pm

1 stop12h 55m

Toronto Pearson Intl

Tue 6/2

5:45 pm-10:01 pm

1 stop7h 16m

$389

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 6/24

5:00 am-4:40 pm

1 stop8h 40m

Toronto Pearson Intl

Wed 6/24

6:45 pm-9:07 pm

Nonstop5h 22m

$392

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 5/28

1:51 pm-11:59 pm

1 stop7h 08m

Toronto Pearson Intl

Thu 6/4

6:45 pm-9:08 pm

Nonstop5h 23m

$417
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 6/12

11:52 pm-9:54 am

1 stop7h 02m

Toronto Pearson Intl

Wed 6/17

6:45 pm-9:08 pm

Nonstop5h 23m

$417

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 6/18

7:00 am-5:10 pm

1 stop7h 10m

Toronto Pearson Intl

Tue 6/23

6:14 pm-10:34 pm

1 stop7h 20m

$417

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/20

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

Compare providers for flights from Seattle to Pearson Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Pearson Intl in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Toronto Pearson Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Toronto Pearson Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Toronto Pearson Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Toronto Pearson Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Toronto Pearson Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Pearson Intl

Have a flexible travel schedule? Discover the best time to fly to Pearson Intl from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Toronto Pearson Intl Airport

How far ahead should I book a flight from Seattle to Toronto Pearson Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Pearson Intl. Price data was last updated on April 17, 2026.

The price you pay for your flight from Seattle to Toronto Pearson Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Toronto Pearson Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto Pearson Intl Airport (average of $265). Flying from Seattle to Toronto Pearson Intl Airport in December is currently the most expensive (average of $487). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to YYZ?

Find hourly flight availability from Seattle to Pearson Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Toronto Pearson Intl Airport as you normally would.

How much does it cost to fly round-trip from Seattle to Toronto Pearson Intl Airport?

The best insider tips for Seattle to Toronto Pearson Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Toronto Pearson Intl Airport trip
Our travel experts
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Jessica Macdonald

Jessica Macdonald

Expert on Air Canada

Currently based in Scotland after living in South Africa and the United States, Jessica has been writing travel and aviation content for more than 10 years. She regularly contributes to Travel + Leisure and TripSavvy, and has had work published by Condé Nast Traveller and The Independent. She has traveled to more than 50 countries across six continents.

Read more
Kaitlyn McInnis

Kaitlyn McInnis

Expert on YYZ

Kaitlyn is a guidebook author and travel writer splitting her time between Atlantic Canada and Istanbul, Türkiye. She has visited over fifty countries and all seven continents, so she is very familiar with many hotels, airports and airlines around the globe. But her favorite type of vacation is sunbathing by the sea with a good book in hand.

Read more
Brandon Schultz

Brandon Schultz

Expert on SEA

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Reviews of airlines servicing Pearson Intl

Get insights into the airlines that provide service to Pearson Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pearson Intl. Reviews last updated April 23, 2026.
Peruse reviews from past customers who have flown with Alaska Airlines,Delta, andUnited Airlines from Seattle to Toronto Pearson Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Alaska Airlines
7.9
Good
12,273 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Delta
7.9
Good
8,437 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
United Airlines
7.4
Good
9,635 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
WestJet
7.2
Good
3,324 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.
Air Canada
7.1
Good
10,955 reviews
Alaska Airlines
7.9
Good
12,273 reviews

Crew

8.5

Boarding

8.1

Food

7.0

Entertainment

7.0

Comfort

7.8

Overall

7.9

Reviews

1 / 20
4.0
Okay

Anonymous,Dec 2025

SEA - MSY

I really got a lesson in upgrades. I let my seat get chosen . Both times a middle seat...on purpose ...even when we were not full. That's petty I sat behind the first class . They got more than 1 drink ...and a snack . .and the staff actually talked to them...behind a see thru shawl/sheet in the aisle....... You could see over the seats just fine and you could hear the voices just fine. But the sheet let You KNOW. Your not welcome here. For a moment I regretted not spending 300 dollars per seat so I could see a smile and eat a sandwhich and enjoy my seat . The married couple drank champain and laughed and flirted with each other. It looked so happy and care free MONEY really does buy happiness ..the hateful glares and sighs from my seat mates brought me back to reality I wasn't rich and I still had 2 hours left in this middle seat.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Pearson Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to Toronto Pearson Intl?

    If you book a flight to Toronto Pearson Intl from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 2 flights from Seattle/Tacoma Intl to Toronto Pearson Intl per day from 5 different airlines.

  • How long is the flight from Seattle to Toronto Pearson Intl Airport?

    Departing from Seattle to Toronto Pearson Intl Airport will take you 8h 14m. Airlines will cover a distance of 2054 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seattle to Toronto Pearson Intl Airport round-trip?

    Cheapflights users have booked flights from Seattle to Toronto Pearson Intl Airport round-trip from $138. Other airlines that can offer you cheap pricing are Air Canada, from $150, and WestJet, from $222. Users have found that Delta is 63% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Toronto Pearson Intl Airport one-way?

    The cheapest airline one-way is Alaska Airlines, with whom users have recently found tickets for as low as $82. However, be on the lookout for offers from WestJet and Air Canada, as they are both options that can get you from Seattle to Toronto Pearson Intl Airport for a low price.

  • What are the most reliable airlines from Seattle to Toronto Pearson Intl Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Toronto Pearson Intl Airport on time: Air Tahiti Nui (100%), Alaska Airlines (92%), Hawaiian Airlines (92%).

  • What are the cheapest flights from Seattle to Toronto Pearson Intl Airport?

    On average you can expect to pay $879 for a flight from Seattle to Toronto Pearson Intl Airport. The cheapest flight overall is $140 while the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl) is currently priced at $275.

  • Can I find deals for flights from Seattle to Pearson Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Pearson Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Pearson Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Pearson Intl.

  • Can I find deals for business class flights from Seattle to Pearson Intl?

    Yes. Cheapflights offers flight deals from Seattle to Pearson Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Toronto Pearson Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto Pearson Intl Airport (average of $265). Flying from Seattle to Toronto Pearson Intl Airport in December is currently the most expensive (average of $487). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Toronto Pearson Intl Airport?

Book flights to Toronto Pearson Intl Airport if you plan to visit one of these locations
Brampton
Collingwood
Markham
Brantford
Vaughan
Pickering
Lindsay
Oakville
Peterborough
Kitchener
Ajax
Barrie
Cambridge
Milton
Burlington
Oshawa
Orillia
Owen Sound
Richmond Hill
Gravenhurst

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Pearson Intl

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Hamilton flights
Portland to Pearson Intl flights
Bellingham to Pearson Intl flights

Top 5 airlines flying from Seattle to Pearson Intl

Discover the top 5 airlines that operate flights from Seattle to Pearson Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$138Average$403FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$150Average$395FlexibilityNo cancel feeOn-time67%
WestJetCheapest$222Average$297FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$251Average$438FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$277Average$380FlexibilityNo cancel feeOn-time69%

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