SEA - YYZ

C$ 229 Find Cheap Flights from Seattle to Toronto Pearson Airport – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 555
Typical prices: C$ 462-C$ 931
WestJet
Tue 23/1Sat 27/1
SEA - YYZ • 2 stops
Cheapest direct flights
C$ 654
Typical prices: C$ 462-C$ 991
Alaska Airlines
Sat 1/12Fri 21/12
SEA - YYZ • Direct
Direct flights
Every day
You can fly direct with Alaska Airlines and Air Canada. Average duration is 4h 38m
Direct flights
+1
Direct flights
+1
When to book
14 weeks
in advance
Our data shows that travellers who book at least 14 weeks in advance save around 59% compared to booking last minute.
Insights
Insights
When to travel
January
Cheapest • 47% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Calgary (YYC)
Cheapest • Avg C$ 532 (round-trip)
Denver Intl (DEN)
Shortest trip • 7h 42m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Toronto Pearson Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Seattle to Pearson Intl (SEA-YYZ)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Pearson Intl

Sat, 23 Jan - Wed, 27 Jan
WestJet Logo
2:20 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 25m2 stops Calgary Edmonton
WestJet Logo
7:00 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 40m2 stops Edmonton Calgary
C$ 555WestJet
3+ days ago
Tue, 1 Dec - Mon, 21 Dec
WestJet Logo
2:30 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 15m2 stops Calgary Edmonton
WestJet Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 557WestJet
3+ days ago
Tue, 15 Dec - Tue, 5 Jan
WestJet Logo
2:30 p.m. - 5:45 a.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 15m2 stops Calgary Edmonton
WestJet Logo
7:30 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 10m1 stop Calgary
C$ 560WestJet
3+ days ago
Mon, 14 Dec - Mon, 21 Dec
Multiple Airlines Logo
8:33 a.m. - 9:51 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
10h 18m1 stop Austin Bergstrom
Multiple Airlines Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 574Multiple Airlines
3+ days ago
Wed, 16 Dec - Tue, 5 Jan
Multiple Airlines Logo
4:58 p.m. - 9:55 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
25h 57m2 stops Denver Intl Orlando
Multiple Airlines Logo
7:30 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 10m1 stop Calgary
C$ 581Multiple Airlines
3+ days ago
Tue, 1 Dec - Mon, 21 Dec
Multiple Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Multiple Airlines Logo
6:10 a.m. - 1:40 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
10h 30m1 stop Calgary
C$ 583Multiple Airlines
3+ days ago
Sat, 12 Dec - Sat, 19 Dec
Alaska Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Alaska Airlines Logo
5:15 p.m. - 8:13 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 58mdirect
C$ 638Alaska Airlines
3+ days ago
Tue, 1 Dec - Mon, 21 Dec
Alaska Airlines Logo
8:33 a.m. - 4:05 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 32mdirect
Alaska Airlines Logo
5:15 p.m. - 8:13 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 58mdirect
C$ 654Alaska Airlines
3+ days ago
Sat, 28 Nov - Sat, 5 Dec
Air Canada Logo
7:45 a.m. - 3:25 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 40mdirect
Air Canada Logo
6:25 p.m. - 8:59 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mdirect
C$ 898Air Canada
3+ days ago
Mon, 16 Nov - Sun, 22 Nov
Air Canada Logo
7:45 a.m. - 3:25 p.m.SEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 40mdirect
Air Canada Logo
6:25 p.m. - 8:59 p.m.YYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mdirect
C$ 917Air Canada
2 days ago
Booking Insights

Price, demand, and travel trends for Seattle to Toronto Pearson Intl Airport flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights with more confidence.

How much is a round-trip flight from Seattle to Toronto Pearson Intl Airport?

Round-trip flights from Seattle to Toronto Pearson Intl Airport typically range from C$ 462 to C$ 931. The lowest price found in the past 5 days was C$ 555, on WestJet.

What's the cheapest day of the week to fly from Seattle to Toronto Pearson Intl Airport?

Based on deals KAYAK users found in the last 12 months, Wednesday is the cheapest day of the week to fly from Seattle to Toronto Pearson Intl Airport. It's 17% cheaper than the average day, while Sunday is the most expensive, with prices 30% higher.

What is the cheapest month to fly from Seattle to Toronto Pearson Intl Airport?

•January is the cheapest month to fly from Seattle to Toronto Pearson Intl Airport at C$ 369 round-trip.
•December (C$ 849) and October (C$ 819) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 130% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

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

Flights from Seattle to Toronto Pearson Intl Airport are cheapest 14 weeks before departure. Booking in this window typically costs about 59% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals
Expert advice

Expert advice for your flight from Seattle to Pearson Intl

 
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on Air Canada

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Mark Stachiew

Mark Stachiew

Expert on YYZ

Mark Stachiew has been exploring the world and writing about it for more than 30 years. His travel stories have appeared in numerous newspapers, magazines and online publications in Canada, the United States and beyond.

Read more

Key details for Seattle to Toronto Pearson Intl Airport flights

Low season

February

Cheapest flight

C$ 229
Beat the crowds with an average 45% drop in traveller numbers.
The most popular month to fly with an average 43% increase in traveller numbers.
One-way flight from Seattle to Toronto Pearson Intl Airport

When to book flights from Seattle to Pearson Intl

Are your dates flexible? Find out the best times to travel from Seattle to Pearson Intl based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Seattle to Toronto Pearson Intl Airport flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines, and booking tips.

  • What are the earliest and latest flights from Seattle to Toronto Pearson Intl Airport?

    These are the earliest and latest flight times available from Seattle to Toronto Pearson Intl Airport:

    • Earliest: departs at 7:45 am and lands at 12:23 pm
    • Latest: departs at 8:33 am and lands at 1:11 pm.

    The flight takes about 4h 38m.

  • Which cabin classes can I book on flights from Seattle to Toronto Pearson Intl Airport?

    Three cabin classes are available on flights from Seattle to Toronto Pearson Intl Airport:

    • Economy Class
    • Business Class
    • First Class

  • How long does a flight from Seattle to Toronto Pearson Intl Airport take?

    A direct flight from Seattle to Toronto Pearson Intl Airport takes 4h 38m, covering 5,319 km.

  • Do I need a passport to fly from Seattle to Toronto Pearson Intl Airport?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Seattle to Toronto Pearson Intl Airport flight?

    Round-trip flights from Seattle to Toronto Pearson Intl Airport range from C$ 462 to C$ 931, with an average of C$ 699 over the past 12 months. Anything below C$ 462 counts as a good deal.

  • How expensive are last-minute Seattle to Toronto Pearson Intl Airport flights?

    Last-minute fares on this route (booked within two weeks of departure) run 66% above the C$ 699 route average. Book 14 weeks before departure for the lowest fares.

  • How much can I save by taking a layover when flying from Seattle to Toronto Pearson Intl Airport?

    On this route, layover flights are cheaper than direct options on average. Layover fares average C$ 532 round-trip via Calgary (YYC), compared to C$ 725 for direct.

  • What is the standard checked bag allowance on flights from Seattle to Toronto Pearson Intl Airport?

    There is no standard. Checked bag policies vary by airline on this route. Most carriers charge C$ 56–C$ 140 for the first checked bag in economy. Premium fares and elite status bookings typically include a free checked bag.

  • Which aircraft model is used most often on flights from Seattle to Toronto Pearson Intl Airport?

    The Airbus A220-300 family is used most often on this route, operated mainly by Air Canada. Other aircraft seen on the route include Airbus A321neo variants.

  • How are flight departures from Seattle to Toronto Pearson Intl Airport spread across the day?

    Morning is the busiest departure period on Seattle to Toronto Pearson Intl Airport flights, with 100% leaving in that window. Afternoon departures account for 0%, Evening flights for 0%, and Night flights for 0%.

  • Have flight prices from Seattle to Toronto Pearson Intl Airport changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 555 to C$ 2,488. That means the highest observed fare was about 4x higher than the lowest one.

  • Which airlines offer Wi-Fi on Seattle to Toronto Pearson Intl Airport flights?

    Two airlines offer in-flight Wi-Fi on Seattle to Toronto Pearson Intl Airport flights:

    • Alaska Airlines
    • Air Canada

    Pricing varies by airline and fare class. Some plans are included with the ticket or loyalty program; others are paid add-ons priced by flight length.

  • How are flight prices from Seattle to Toronto Pearson Intl Airport looking right now?

    One-way fares from Seattle to Toronto Pearson Intl Airport are currently lower than usual. Average one-way flight prices are about C$ 307, which is 13% below the typical average for this route.

  • What car rental options are available at Toronto Pearson Intl Airport (YYZ)?

    Toronto Pearson Intl Airport (YYZ) hosts 5 major car rental companies, with daily rates averaging C$ 51 for economy cars. Top options include:

    • Ace
    • City Car & Truck Rental
    • Routes Car & Truck Rentals
    • Zoom Rent A Car
    • Hertz

  • Which airports can I use when flying from Seattle to Toronto Pearson Intl Airport?

    Flights from Seattle to Toronto Pearson Intl Airport usually depart from Seattle/Tacoma Intl (SEA) and arrive at Toronto Pearson Intl (YYZ).

  • Which airports do connecting flights from Seattle to Toronto Pearson Intl Airport pass through?

    One-stop flights from Seattle to Toronto Pearson Intl Airport most commonly connect through:

    • Calgary (YYC) – 76% of one-stop connections
    • Vancouver Intl (YVR) – 12% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 6% of one-stop connections
    • Salt Lake City (SLC) – 2% of one-stop connections

  • Can I save money by using flexible dates for flights from Seattle to Toronto Pearson Intl Airport?

    Yes. Flexible dates can save you up to 37% on flights from Seattle to Toronto Pearson Intl Airport. Wednesday is the cheapest departure day at C$ 580 round-trip on average, while Sunday is the most expensive at C$ 910, a difference of C$ 330.

    KAYAK's flexible dates feature shows options up to three days before and after your selected dates, making it easier to compare nearby fares.

  • Which airlines fly from Seattle to Toronto Pearson Intl Airport?

    2 airlines operate flights between Seattle and Toronto Pearson Intl Airport. The airlines offering direct flights on this route include:

    • Alaska Airlines
    • Air Canada

  • How much time can I save by choosing a different layover airport when travelling from Seattle to Toronto Pearson Intl Airport?

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 7h 42m, compared with 7h 48m via Vancouver Intl (YVR) and 7h 48m via Salt Lake City (SLC).

  • What is the time difference between Seattle and Toronto Pearson Intl Airport?

    Toronto Pearson Intl Airport is 3 hours ahead of Seattle (Eastern Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • Which popular places can I visit in Toronto Pearson Intl Airport?

    Some of the most popular sights in Toronto Pearson Intl Airport are Rogers Centre, Scotiabank Arena, and Union Station. These are among the most viewed places in Toronto Pearson Intl Airport on KAYAK.

  • Which airlines offer extra legroom and free seat selection on Seattle to Toronto Pearson Intl Airport flights?

    Among airlines operating Seattle to Toronto Pearson Intl Airport flights:

    • Alaska Airlines: offers free seat selection
    • Air Canada: offers free seat selection
    • United Airlines: offers free seat selection
    • Hawaiian Airlines: offers free seat selection

    Extra legroom and free seat selection availability depends on fare class and route.

  • Which airlines include bags at no extra cost on Seattle to Toronto Pearson Intl Airport flights?

    Here are some options for this route, based on selected ticket types and cabin classes:

    • Alaska Airlines: a carry-on bag and a checked bag in Economy Class
    • Air Canada: a carry-on bag and a checked bag in Economy Class
    • United Airlines: a carry-on bag and a checked bag in Business Class

    Baggage allowance can vary by ticket type, cabin class, route, and airline, so always check the fare details before booking.

Your guide to booking Seattle to Toronto Pearson Intl Airport flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure and avoid flying on Sunday. On this route, Wednesday flights average C$ 580, about C$ 330 less than Sunday fares (36% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 14 weeks before you fly. On this route, that window historically saves about 59% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Seattle to Toronto Pearson Intl Airport trip for January. Fares historically average C$ 369 round-trip in that month – typically C$ 481 less than the most expensive month, which is December (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through Calgary Airport (YYC) can be cheaper than flying direct. The cheapest layover option averages C$ 532 round-trip on this route – about C$ 193 less than direct flights (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Toronto Pearson Intl Airport.

    • Crowne Plaza Toronto Airport By IHG
    • Sheraton Gateway Hotel in Toronto International Airport
    • Spark by Hilton Toronto Airport

Prefer to fly direct from Seattle to Toronto Pearson Airport?

 
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Toronto Pearson Intl

Monday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Tuesday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Friday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Saturday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Sunday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

See more nonstop flights

Direct returns

Toronto Pearson Intl to Seattle/Tacoma Intl

Monday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Thursday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Friday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Saturday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Sunday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

See more nonstop flights

More options for your flight from Seattle to Pearson Intl

Complete your trip to Toronto with a hotel stay or car rental

Car rentals in Toronto
Hotels in Toronto
Vacations in Toronto