Cheap flights from Seattle to Toronto Pearson Intl Airport from C$ 150

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
27 May — 3 Jun1
1 adult
1 adult, Economy, 0 bags
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 Wednesday or Thursday and return on a Friday

Cheap flight deals from Seattle to Pearson Intl

Enter your travel dates to find the best prices.

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 27 April 2026.

Fri 7/87:00 a.m.
SEA
-
YYZ
1 stop8h 55m
WestJet
Fri 14/81:30 p.m.
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 22/4C$ 362
Fri 17/77:00 a.m.
SEA
-
YYZ
2 stops11h 10m
WestJet
Mon 20/712:00 p.m.
YYZ
-
SEA
2 stops9h 45m
WestJet
Deal found 22/4C$ 364
Sun 12/77:35 p.m.
SEA
-
YYZ
1 stop15h 40m
WestJet
Tue 21/71:30 p.m.
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 23/4C$ 366
Sat 11/77:35 p.m.
SEA
-
YYZ
1 stop8h 20m
WestJet
Fri 31/710:25 p.m.
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 22/4C$ 368
Wed 1/710:30 a.m.
SEA
-
YYZ
1 stop7h 45m
WestJet
Fri 24/76:30 p.m.
YYZ
-
SEA
1 stop18h 10m
WestJet
Deal found 22/4C$ 369
Wed 6/510:30 a.m.
SEA
-
YYZ
1 stop9h 15m
WestJet
Sat 9/59:00 a.m.
YYZ
-
SEA
1 stop12h 45m
WestJet
Deal found 22/4C$ 370
Sun 12/77:00 a.m.
SEA
-
YYZ
2 stops11h 10m
WestJet
Fri 31/710:25 p.m.
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 22/4C$ 372
Fri 31/710:30 a.m.
SEA
-
YYZ
2 stops10h 29m
WestJet
Sun 2/810:25 p.m.
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 23/4C$ 373
Fri 9/107:35 p.m.
SEA
-
YYZ
1 stop7h 10m
WestJet
Tue 13/1012:00 p.m.
YYZ
-
SEA
1 stop9h 45m
WestJet
Deal found 22/4C$ 374
Thu 28/510:30 a.m.
SEA
-
YYZ
1 stop7h 45m
WestJet
Wed 3/67:00 a.m.
YYZ
-
SEA
1 stop14h 45m
WestJet
Deal found 22/4C$ 376
Mon 11/57:35 p.m.
SEA
-
YYZ
1 stop8h 20m
WestJet
Sat 16/510:25 p.m.
YYZ
-
SEA
1 stop14h 15m
WestJet
Deal found 26/4C$ 377
Sat 23/510:30 a.m.
SEA
-
YYZ
1 stop10h 40m
WestJet
Tue 14/71:30 p.m.
YYZ
-
SEA
1 stop8h 15m
WestJet
Deal found 24/4C$ 379

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 27 April 2026.

Round-trip from

C$ 362

One-way from

C$ 150

Popular in

December

Cheapest in

January

Average price

C$ 503

Good round-trip deal

C$ 256 or less

Good one-way deal

C$ 309 or less
WestJet
  • WestJet
  • 7/8-14/8
  • 2 total stops
  • 17h 10m total
  • Seattle to Toronto
WestJet
  • WestJet
  • 14/5
  • 1 total stop
  • 8h 20m total
  • Seattle to Toronto
Highest demand for flights based on searches. 2% potential increase in price (C$ 16 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).
Average for round-trip flights in April 2026
Price to beat on a round-trip flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
Price to beat on a one-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl.

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 629,999 searches. Data last updated 27 April 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

Tue 2/6

11:52 p.m.-9:54 a.m.

1 stop7h 02m

Toronto Pearson Intl

Sat 6/6

8:50 a.m.-11:59 p.m.

1 stop18h 09m

C$ 459

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 8/5

7:30 a.m.-9:55 p.m.

1 stop11h 25m

Toronto Pearson Intl

Sun 10/5

6:10 a.m.-2:50 p.m.

1 stop11h 40m

C$ 459

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 24/5

9:05 a.m.-11:14 p.m.

1 stop11h 09m

Toronto Pearson Intl

Sat 30/5

2:20 p.m.-10:48 p.m.

1 stop11h 28m

C$ 459

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 7/6

11:52 p.m.-9:54 a.m.

1 stop7h 02m

Toronto Pearson Intl

Tue 9/6

5:15 p.m.-11:59 p.m.

1 stop9h 44m

C$ 459

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 3/6

7:05 a.m.-10:44 p.m.

1 stop12h 39m

Toronto Pearson Intl

Thu 4/6

2:45 p.m.-10:39 p.m.

1 stop10h 54m

C$ 459

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 7/6

5:30 a.m.-5:24 p.m.

1 stop8h 54m

Toronto Pearson Intl

Sat 13/6

2:24 p.m.-10:34 p.m.

1 stop11h 10m

C$ 489
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 2/6

7:59 a.m.-3:45 p.m.

Nonstop4h 46m

Toronto Pearson Intl

Sat 6/6

4:55 p.m.-7:19 p.m.

Nonstop5h 24m

C$ 514

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 4/6

11:30 a.m.-11:58 p.m.

1 stop9h 28m

Toronto Pearson Intl

Sun 7/6

2:29 p.m.-10:34 p.m.

1 stop11h 05m

C$ 547

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 16/6

9:05 a.m.-11:14 p.m.

1 stop11h 09m

Toronto Pearson Intl

Thu 18/6

1:40 p.m.-11:59 p.m.

1 stop13h 19m

C$ 555

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 9/6

7:59 a.m.-3:45 p.m.

Nonstop4h 46m

Toronto Pearson Intl

Thu 11/6

4:55 p.m.-7:25 p.m.

Nonstop5h 30m

C$ 575

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

The best time to book flights from Seattle to Toronto Pearson Intl Airport is 66 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 C$ 362). Flying from Seattle to Toronto Pearson Intl Airport in December is currently the most expensive (average of C$ 666). 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 27 April 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?

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 27 April 2026.
Get a feel of what it's like to fly with Alaska Airlines,WestJet, andAir Canada from Seattle to Toronto Pearson Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.0

Entertainment

7.0

Comfort

7.8

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.

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.0

Entertainment

7.0

Comfort

7.8

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.

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.0

Entertainment

7.0

Comfort

7.8

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.

Boarding

8.1

Crew

8.5

Overall

7.9

Food

7.0

Entertainment

7.0

Comfort

7.8

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?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Toronto Pearson Intl. On average, Seattle/Tacoma Intl has 4 outbound flights to Toronto Pearson Intl per day from 3 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

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

    Delta and United Airlines can get you from Seattle to Toronto Pearson Intl Airport in just under 7h 02m. Your travel time can differ by up to 4h 23m. There are 3306 km between Seattle and Toronto Pearson Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

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

    Flying on Air Canada is currently your cheapest option to Toronto Pearson Intl Airport, with prices starting at C$ 256. Additional round-trip tickets that might be worth considering are offered by WestJet and Alaska Airlines, with the lowest prices starting at C$ 282 and C$ 302, respectively. Air Canada is priced at 51% lower than the current average price of a flight leaving 3 months from now.

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

    One-way options have recently been found by users for as low as C$ 126 on Alaska Airlines. Other airlines that offer cheap prices include Air Canada from C$ 131 and WestJet from C$ 140 one-way.

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

    Consider Air Tahiti Nui (100%), Alaska Airlines (92%) or Hawaiian Airlines (92%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Toronto Pearson Intl Airport.

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

    Looking at all options, your cheapest flight can be booked for C$ 135. While the most popular route (Seattle/Tacoma Intl - Toronto Pearson Intl) can be booked for C$ 377 on average, our data indicates C$ 418 when flying from Seattle to Toronto Pearson Intl Airport.

  • 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 C$ 362). Flying from Seattle to Toronto Pearson Intl Airport in December is currently the most expensive (average of C$ 666). 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

Travelling 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
Markham
Collingwood
Kitchener
Oakville
Vaughan
Barrie
Burlington
Muskoka
Cambridge
Richmond Hill
Oshawa
Pickering
Waterloo
Guelph
Milton
St. Catharines
Brantford
Lindsay
Peterborough

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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.

Top 3 airlines flying from Seattle to Pearson Intl

Discover the top 3 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 629,999 searches. Data last updated 27 April 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 256AverageC$ 457FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 282AverageC$ 433FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 302AverageC$ 776FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Seattle to Pearson Intl?

Deals for Seattle to Pearson Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Seattle to Pearson Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Pearson Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Seattle to Pearson Intl with no change fees?

Yes! Cheapflights helps users easily find flights from Seattle to Pearson Intl with no change fees.

Can Cheapflights notify me if prices for flights from Seattle to Pearson Intl become cheaper?

Of course! You can now track prices for flights from Seattle to Pearson Intl and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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