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Pearson Intl

$120+ 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Toronto Pearson Intl are usually found in January or March, booked 70 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap 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 August 14, 2025.

Round-trip from

$259
(Kiwi.com)

One-way from

$120
(FlightHub)

Popular in

June

Cheapest in

January

Average price

$512

Good round-trip deal

$461 or less

Good one-way deal

$207 or less
From Seattle/Tacoma Intl to Toronto Pearson Intl
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One-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl
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Highest demand for flights based on searches. 6% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
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Find 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 August 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 8/14. 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 9/108:40 amSEA - YYZ
1 stop9h 12mWestJet
Thu 9/118:00 amYYZ - SEA
1 stop7h 59mWestJet
Deal found 8/14$259
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/31:50 pmSEA - YYZ
2 stops13h 01mWestJet
Tue 10/712:00 pmYYZ - SEA
2 stops10h 14mWestJet
Deal found 8/14$260
This FlightHub deal was found by Cheapflights users on 8/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/261:15 pmSEA - YYZ
1 stop8h 16mWestJet
Sat 10/1110:20 pmYYZ - SEA
1 stop17h 13mWestJet
Deal found 8/14$261
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/271:50 pmSEA - YYZ
1 stop7h 32mWestJet
Sat 10/41:30 pmYYZ - SEA
1 stop8h 44mWestJet
Deal found 8/12$262
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:05 amSEA - YYZ
1 stop7h 17mWestJet
Sat 9/2012:00 pmYYZ - SEA
2 stops10h 21mWestJet
Deal found 8/14$263
This Trip.com deal was found by Cheapflights users on 8/12. 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 9/237:16 amSEA - YYZ
Nonstop4h 44mMultiple Airlines
Tue 9/306:30 amYYZ - SEA
1 stop9h 29mMultiple Airlines
Deal found 8/12$264
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:40 amSEA - YYZ
2 stops12h 51mWestJet
Sat 10/410:20 pmYYZ - SEA
1 stop17h 13mWestJet
Deal found 8/14$265
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Fri 10/178:40 amSEA - YYZ
1 stop9h 12mMultiple Airlines
Wed 11/54:45 pmYYZ - SEA
Nonstop5h 20mMultiple Airlines
Deal found 8/13$266
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/31:50 pmSEA - YYZ
1 stop7h 32mWestJet
Sat 9/201:30 pmYYZ - SEA
1 stop8h 51mWestJet
Deal found 8/13$267
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 9/97:16 amSEA - YYZ
Nonstop4h 44mMultiple Airlines
Sun 9/216:45 amYYZ - SEA
1 stop8h 50mMultiple Airlines
Deal found 8/13$268
This oojo deal was found by Cheapflights users on 8/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/51:50 pmSEA - YYZ
2 stops25h 11mWestJet
Sun 9/76:45 amYYZ - SEA
1 stop8h 50mWestJet
Deal found 8/14$269
This Kiwi.com deal was found by Cheapflights users on 8/13. 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.
Thu 9/251:50 pmSEA - YYZ
1 stop7h 32mMultiple Airlines
Wed 10/84:45 pmYYZ - SEA
Nonstop5h 23mMultiple Airlines
Deal found 8/13$270

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 August 14, 2025.
Use the filters below to find and compare flights from Seattle to Toronto Pearson Intl Airport that are best for you.

Fly from

Seattle

Fly to

Pearson Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 9/3

1:50 pm-12:22 am

1 stop7h 32m

Toronto Pearson Intl

Mon 9/15

3:00 pm-8:29 pm

1 stop8h 29m

$261

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 9/28

1:15 pm-12:31 am

1 stop8h 16m

Toronto Pearson Intl

Fri 10/3

4:45 pm-7:08 pm

Nonstop5h 23m

$261

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 10/2

8:40 am-9:01 pm

2 stops9h 21m

Toronto Pearson Intl

Tue 10/7

8:00 am-12:59 pm

1 stop7h 59m

$261

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 9/27

1:50 pm-12:22 am

1 stop7h 32m

Toronto Pearson Intl

Sat 10/4

1:30 pm-7:14 pm

1 stop8h 44m

$262

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 10/15

1:50 pm-12:22 am

1 stop7h 32m

Toronto Pearson Intl

Sat 10/18

4:45 pm-7:08 pm

Nonstop5h 23m

$263

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/16

7:05 am-5:22 pm

1 stop7h 17m

Toronto Pearson Intl

Sat 9/20

12:00 pm-7:21 pm

2 stops10h 21m

$263

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 10/8

7:18 am-3:00 pm

Nonstop4h 42m

Toronto Pearson Intl

Tue 10/14

8:00 am-12:59 pm

1 stop7h 59m

$266

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 10/15

1:50 pm-5:51 am

2 stops13h 01m

Toronto Pearson Intl

Sat 10/18

12:00 pm-7:14 pm

2 stops10h 14m

$268

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 9/5

1:50 pm-6:01 pm

2 stops25h 11m

Toronto Pearson Intl

Sun 9/7

6:45 am-12:35 pm

1 stop8h 50m

$269

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 9/25

1:50 pm-12:22 am

1 stop7h 32m

Toronto Pearson Intl

Wed 10/8

4:45 pm-7:08 pm

Nonstop5h 23m

$270

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 22 results
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The best insider tips for Seattle to Toronto Pearson Intl Airport flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seattle to Toronto Pearson Intl Airport trip
Airlines
Alaska Airlines

Alaska's Wi-Fi is a flat fee, ideal for getting work done on longer flights.


Alaska's Premium Class offers extra legroom and free cocktails, though meals require pre-ordering.

Read more about Alaska Airlinesby Robert Schrader
Air Canada

Air Canada offers Preferred Seats with extra space, available for a fee or free for certain members.


Air Canada's in-flight entertainment includes over 2,500 hours of content, with movies in 15+ languages.

Read more about Air Canadaby Jessica Macdonald
Airports
SEA

Plan to arrive at SEA at least two hours before your flight due to potential long security lines.

Read more about SEAby Brandon Schultz
YYZ

Expect a fast customs process at YYZ, even during peak hours, when arriving from abroad.

Read more about YYZby Kaitlyn McInnis
Our travel experts
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

Robert Schrader

Robert Schrader

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

Jessica Macdonald

Jessica Macdonald

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 McInnis

Kaitlyn McInnis

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

Brandon Schultz

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

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 August 8, 2025.

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 70 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 $243). Flying from Seattle to Toronto Pearson Intl Airport in August is currently the most expensive (average of $348). 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 August 14, 2025.

One of the essential ways to save on airfare from Seattle to Toronto Pearson Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the afternoon could potentially save you up to 55% on airfare.

Weekly flight availability from Seattle to Toronto Pearson Intl Airport

Explore weekly flight availability from Seattle to Pearson Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

The most flights from SEA to YYZ are scheduled on a Thursday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

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

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 August 14, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and United 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
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
WestJet
7.2
Good
3,015 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Air Canada
7.1
Good
9,949 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 5 flights from Seattle/Tacoma Intl to Toronto Pearson Intl per day from 5 different airlines.

  • 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 $129. Other airlines that can offer you cheap pricing are United Airlines, from $158, and Delta, from $182. Users have found that Air Canada is 69% cheaper than the other options available to this destination.

  • 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: Qatar Airways (97%), Alaska Airlines (95%), Hawaiian Airlines (95%).

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

    On average you can expect to pay $859 for a flight from Seattle to Toronto Pearson Intl Airport. The cheapest flight overall is $128 while the most popular route, (Seattle/Tacoma Intl - Toronto Pearson Intl) is currently priced at $245.

  • 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 $243). Flying from Seattle to Toronto Pearson Intl Airport in August is currently the most expensive (average of $348). 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
Kitchener
Markham
Muskoka
Collingwood
Bracebridge
Brantford
Pickering
Lindsay
Burlington
Peterborough
Oakville
Barrie
Cambridge
Milton
Oshawa
Owen Sound
Ajax
Vaughan
Richmond Hill

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$129Average$458FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$158Average$455FlexibilityNo cancel feeOn-time69%
DeltaCheapest$182Average$428FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$236Average$311FlexibilityNo cancel feeOn-time60%
Alaska AirlinesCheapest$276Average$494FlexibilityNo cancel feeOn-time75%

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