SEA - YYZ

$164 Find Cheap Flights from Seattle to Toronto Pearson Airport - Compare and Save

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Everything you should know

Cheapest round-trip
$342
Typical prices: $312-$630
WestJet
Wed 10/17Wed 10/24
SEA - YYZ • 2 stops
Cheapest non-stop
$469
Typical prices: $315-$672
Alaska Airlines
Sun 10/21Wed 10/24
SEA - YYZ • Non-stop
Nonstop flights
You can fly direct with Air Canada and Alaska Airlines. Average duration is 4h 43m
Direct flights
+1
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 14 weeks in advance save around 57% compared to booking last minute.
Insights
Insights
When to travel
Cheapest • 40% price drop
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Cheapest • Avg $297 (round-trip)
Shortest trip • 7h 42m (one-way)
Insights
Insights
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We hope you love your trip to Toronto Pearson Intl Airport!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Seattle to Toronto (SEA-YYZ)

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

Recent round-trip flight deals from Seattle to Toronto

Sat, Oct 17 - Sat, Oct 24
WestJet Logo
7:35 pm - 8:00 amSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
9h 25m2 stops Calgary Ottawa
WestJet Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$342WestJet
Thu, Oct 15 - Mon, Oct 19
WestJet Logo
10:30 am - 9:35 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
8h 05m2 stops Calgary Winnipeg
WestJet Logo
9:00 am - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
12h 45m1 stop Calgary
$345WestJet
Wed, Oct 21 - Sat, Oct 24
Multiple Airlines Logo
10:30 am - 10:30 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
9h 00m1 stop Calgary
Multiple Airlines Logo
1:30 pm - 6:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
8h 15m1 stop Calgary
$348Multiple Airlines
Fri, Oct 16 - Thu, Oct 22
Multiple Airlines Logo
10:30 am - 9:15 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
7h 45m1 stop Calgary
Multiple Airlines Logo
3:50 pm - 9:48 amYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
20h 58m2 stops Calgary Las Vegas Harry Reid Intl
$351Multiple Airlines
Wed, Dec 9 - Fri, Jan 8
Delta Logo
7:20 am - 10:54 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 34m2 stops Washington, D.C. Reagan-National New York John F Kennedy Intl
Delta Logo
7:59 am - 7:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
14h 46m2 stops New York LaGuardia Washington, D.C. Reagan-National
$450Delta
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
8:00 am - 3:45 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 45mnonstop
Alaska Airlines Logo
4:55 pm - 7:26 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 31mnonstop
$469Alaska Airlines
Sat, Oct 31 - Sat, Nov 14
Alaska Airlines Logo
8:20 am - 4:05 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 45mnonstop
Alaska Airlines Logo
5:15 pm - 7:45 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 30mnonstop
$469Alaska Airlines
Fri, Oct 30 - Fri, Nov 6
Air Canada Logo
7:45 am - 3:25 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 40mnonstop
Air Canada Logo
6:25 pm - 8:59 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 34mnonstop
$470Air Canada
Sat, Oct 17 - Sat, Oct 24
Air Canada Logo
7:55 am - 3:36 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
4h 41mnonstop
Air Canada Logo
7:20 pm - 9:39 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
5h 19mnonstop
$473Air Canada
Wed, Dec 9 - Fri, Jan 8
Delta Logo
7:20 am - 10:54 pmSEA  Seattle/Tacoma Intl-YYZ Toronto Pearson Intl
12h 34m2 stops Washington, D.C. Reagan-National New York John F Kennedy Intl
Delta Logo
12:15 pm - 6:38 pmYYZ  Toronto Pearson Intl-SEA Seattle/Tacoma Intl
9h 23m1 stop Detroit Metropolitan Wayne County
$493Delta
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 from Seattle to Toronto Pearson Intl Airport 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 start at $342. Prices are typical for this route right now, with typical round-trip fares ranging from $312 to $630. The lowest price found in the past 5 days was $342 on WestJet.

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

Wednesday is the cheapest day of the week to fly from Seattle to Toronto Pearson Intl Airport, it is 13% cheaper than the average day. Sunday is the most expensive day with flight prices 50% higher than average. Based on deals found by KAYAK users in the last 12 months.

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 $265 round-trip.
•August ($578) and July ($559) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 118% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are prices 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 57% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Expert advice

Expert advice for your flight from Seattle to Toronto

 
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.

Stefanie Waldek

Stefanie Waldek

Expert on Air Canada, United Airlines and YYZ

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.

Key details for Seattle to Toronto Pearson Intl Airport flights

Low season

February

Cheapest flight

$164
Best time to beat the crowds with an average 38% drop in price.
Most popular time to fly with an average 26% increase in price.
Flight from Seattle to Toronto Pearson Intl Airport

When to book flights from Seattle to Toronto

Are your dates flexible? Find out the best times to travel from Seattle to Toronto 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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • A common layover city on cheap one-stop flights from SEA to YYZ is Calgary (YYC), usually aboard a flight that begins on WestJet. Occasionally, you can find a cheap flight that starts aboard WestJet that stops in Edmonton (YEG). Cheap one-stop flights aboard Air Canada tend to stop in Vancouver (YVR).

    What's one of the cheapest flights available from Seattle to Toronto that will allow me one carry-on?

  • A Basic ticket aboard a two-stop flight that begins on WestJet and continues on Lynx Air for the last two legs allows one carry-on bag per economy ticket. Since your carry-on must comply with both airlines, it should be within 21.5 x 9 x 15 inches and 22 lb.

    Which airline offers a cheap ticket from Seattle to Toronto that provides a more comfortable journey?

  • When you are considering economy airline tickets from Seattle to YYZ, consider purchasing a flight that has at least one or every leg aboard WestJet. A WestJet economy seat has 31 inches of seat pitch, as opposed to 28 inches on other cheap flights that run the same route. You also have a USB and power outlet at your seat and streaming entertainment.

    Which cheap flights from Seattle to Toronto offer Unaccompanied Minor service?

  • A non-stop flight from Seattle to YYZ aboard Air Canada offers Unaccompanied Minor service to children starting at age 8. For children ages 8 to 11, inclusive, this service is mandatory. Unaccompanied minors may not travel with a pet in the cabin. Parents or guardians dropping off must stay at the airport until the flight has departed.

    How can I get from Toronto Pearson International Airport (YYZ) into downtown Toronto?

  • 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 extra legroom; 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.

  • What airlines are available from Seattle to Toronto Pearson Intl Airport?

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

    • Air Canada
    • Alaska Airlines

  • 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 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 cabin bag and a checked bag in Economy Class
    • Air Canada: a cabin bag and a checked bag in Economy Class
    • Brussels Airlines: a cabin bag and a checked bag in Business Class

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

  • What 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 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 nonstop options on average. Layover fares average $297 round-trip via San Francisco (SFO), compared to $454 for nonstop.

  • 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 $30–$100 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 Boeing 737-900 Passenger/BBJ3 (winglets) family is used most often on this route, operated mainly by Alaska Airlines and Qatar Airways. Other aircraft seen on the route include Airbus A220-300 variants.

  • 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) - 74% of one-stop connections
    • Vancouver Intl (YVR) - 12% of one-stop connections
    • Chicago O'Hare Intl (ORD) - 6% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) - 2% of one-stop connections

    Calgary (YYC) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 42% on the Seattle to Toronto Pearson Intl Airport route. Wednesday is the cheapest departure day at $387 round-trip on average, while Sunday is the most expensive at $667, a difference of $280. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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% of flights leaving in that window. Afternoon departures account for 0%, evening flights for 0%, and night flights for 0%.

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

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

  • 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 12:28 pm
    • Latest: departs at 8:31 am and lands at 1:14 pm.

    The flight takes about 4h 43m.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 87% above the route average of $444. Book 14 weeks before departure for the lowest fares.

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

    A nonstop flight from Seattle to Toronto Pearson Intl Airport takes 4h 43m, covering 2,054 miles.

  • 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.

  • 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 $342 to $1,733. That means the highest observed fare was about 5x higher than the lowest one.

  • 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 $207, which is 17% below the typical average for this route.

  • How much time can I save by choosing a different layover airport 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 50m via Salt Lake City (SLC) and 7h 54m via Detroit Metropolitan Wayne County (DTW).

  • 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.

  • 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 starting from around $8 for economy cars. Top options include:
    • Ace
    • Routes Car & Truck Rentals
    • City Car & Truck Rental
    • Zoom Rent A Car
    • Hertz

  • 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 $312 to $630, with an average of $444 over the past 12 months. Anything below $312 counts as a good deal.

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

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

    • Alaska Airlines
    • Air Canada
    • JetBlue

    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.

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 can be flexible, aim for a Wednesday departure instead of Sunday. On this route, Wednesday flights average $387 - about $280 less than Sunday (42% 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 57% 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 $265 round-trip in that month - typically $313 less than the most expensive month, which is August (based on the last 12 months).
  • If you have the time, taking a 1-stop flight through San Francisco Airport (SFO) can be cheaper than flying direct. The cheapest layover option averages $297 round-trip on this route - about $157 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.
    - Sheraton Gateway Hotel in Toronto International Airport
    - DoubleTree by Hilton Toronto Airport
    - Sheraton Toronto Airport Hotel & Conference Centre
  • Your best option if you are sending an Unaccompanied Minor from Newark to Singapore is to purchase a competitively-priced non-stop flight aboard Singapore Airlines. This service is mandatory for children flying alone from age 5 to 11 and optional for those between 12 and 18. Airline staff will supervise your child from drop-off to pick-up.
  • The Seattle-Tacoma International Airport (SEA) serves as a hub for Alaska Airlines and Delta. Toronto Pearson International Airport (YYZ) is a hub for many airlines, including Air Canada, Porter Airlines, WestJet, and others. Some of the cheapest flights from SEA to YYZ are aboard WestJet, Porter Airlines, Delta, and Air Canada.
  • If you are an American tourist who will be flying from Seattle to Toronto Pearson International Airport, you will probably not need a visa as long as you plan to leave Canada within 180 days. However, if you are traveling to Toronto for other reasons, such as work or study, you will probably have to apply for a visa.
  • At SEA, by showing a prepaid lounge pass or paying an entrance fee, any ticketed passenger can wait for their Toronto flight in the exclusive The Club at SEA, both in the Central Terminal and the South Satellite. United Airlines ticket holders can pay at the door to wait in the United Club in the Central Terminal.
  • Some of the cheapest airline tickets available from Seattle to YYZ require a self-transfer in a connection city. These tickets can be great deals, but make sure that the layover duration allows you enough time to pass through customs, collect any checked baggage, go to possibly another terminal for the next leg of your flight, check in again, and go through security again.

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

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 direct flights

Direct returns

Toronto Pearson Intl to Seattle/Tacoma Intl

Monday

Air Canada,Alaska Airlines

Air Canada,Alaska Airlines

Tuesday

Air Canada,Alaska Airlines

Air Canada,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 direct flights

More options for your flight from Seattle to Toronto

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