$129 Cheap Flights from Seattle (SEA) to Toronto (YYZ)

View $129 flight on Wed, Jun 11, 2025Opens in a new window

Popular airlines from Seattle-Tacoma International Airport (SEA) to Toronto Pearson Intl. Airport (YYZ)

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Find available prices by choosing your travel dates.

Cheap Flights from Seattle to Toronto (SEA-YYZ)

Prices were available within the past 7 days and start at $129 for one-way flights and $288 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, May 27 - Tue, Jun 10
SEA
Seattle
YYZ
Toronto
$288 Roundtrip, found 2 hours ago
$288
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Tue, May 27 from Seattle to Toronto, returning Tue, Jun 10, priced at $288 found 2 hours ago
Delta
Sat, May 17 - Tue, May 27
SEA
Seattle
YYZ
Toronto
$291 Roundtrip, found 23 hours ago
$291
Roundtrip
found 23 hours ago
Select Delta flight, departing Sat, May 17 from Seattle to Toronto, returning Tue, May 27, priced at $291 found 23 hours ago
Alaska Airlines
Wed, May 28 - Fri, Jun 6
SEA
Seattle
YYZ
Toronto
$291 Roundtrip, found 2 hours ago
$291
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Wed, May 28 from Seattle to Toronto, returning Fri, Jun 6, priced at $291 found 2 hours ago
American Airlines
Tue, May 27 - Tue, Jun 10
SEA
Seattle
YYZ
Toronto
$293 Roundtrip, found 2 hours ago
$293
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Tue, May 27 from Seattle to Toronto, returning Tue, Jun 10, priced at $293 found 2 hours ago
Air Canada
Wed, May 21 - Wed, May 28
SEA
Seattle
YYZ
Toronto
$294 Roundtrip, found 6 hours ago
$294
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Wed, May 21 from Seattle to Toronto, returning Wed, May 28, priced at $294 found 6 hours ago
Alaska Airlines
Sat, May 31 - Tue, Jun 10
SEA
Seattle
YYZ
Toronto
$294 Roundtrip, found 23 hours ago
$294
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Sat, May 31 from Seattle to Toronto, returning Tue, Jun 10, priced at $294 found 23 hours ago
United
Tue, Jun 17 - Wed, Jun 18
SEA
Seattle
YYZ
Toronto
$296 Roundtrip, found 19 hours ago
$296
Roundtrip
found 19 hours ago
Select United flight, departing Tue, Jun 17 from Seattle to Toronto, returning Wed, Jun 18, priced at $296 found 19 hours ago
Alaska Airlines
Sun, Jun 8 - Tue, Jun 17
SEA
Seattle
YYZ
Toronto
$297 Roundtrip, found 2 hours ago
$297
Roundtrip
found 2 hours ago
Select Alaska Airlines flight, departing Sun, Jun 8 from Seattle to Toronto, returning Tue, Jun 17, priced at $297 found 2 hours ago
United
Tue, Jun 17 - Tue, Jun 24
SEA
Seattle
YYZ
Toronto
$298 Roundtrip, found 3 hours ago
$298
Roundtrip
found 3 hours ago
Select United flight, departing Tue, Jun 17 from Seattle to Toronto, returning Tue, Jun 24, priced at $298 found 3 hours ago
Delta
Fri, Jun 6 - Mon, Jun 16
SEA
Seattle
YYZ
Toronto
$299 Roundtrip, found 23 hours ago
$299
Roundtrip
found 23 hours ago
Select Delta flight, departing Fri, Jun 6 from Seattle to Toronto, returning Mon, Jun 16, priced at $299 found 23 hours ago

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) cost?
Find cheap return flights from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) starting at $306. Grab your seat and start your adventure. This information is based on the cheapest price found on Expedia for this return journey departing within the next three months. This airfare is for a Alaska Airlines flight leaving SEA on May 14 2025 and touching down at YYZ. The price was last updated on April 24 2025 and has not changed since.
What is the cheapest month to fly from SEA to YYZ?
The cheapest flights from SEA to YYZ are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
Fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) on an Alaska Airlines flight.
What is the cheapest airline that flies from SEA to YYZ?
With prices as low as $129 for a one-way journey from SEA to YYZ, Alaska Airlines is currently the cheapest carrier for this route. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from SEA on June 3 2025. Prices were last updated on April 24 2025 and have not changed since.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
With, on average, 2 nonstop flights departing from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) daily, you’ll be cruising above the clouds before you know it.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
The 6 AM departures from SEA to YYZ are the most sought after. They can also be more expensive. If you want to save on your fare, choose a less crowded time to fly.
What day of the week has the most flights from SEA to YYZ?
Friday offers the most flights from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ). Consider jetting off on this day and you’ll have the best chance of finding a departure that works with your plans.
What is the earliest flight from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
The first flight of the day taking off from Seattle - Tacoma Intl. Airport (SEA) is at around 6:05AM UTC-8. Board this plane and you’ll reach Pearson Intl. Airport (YYZ) at approximately 1:50PM UTC-5. The entire trip takes 4h 45m.
How long does it take to fly from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
Typically, it takes 4 hours and 43 minutes to fly the 2,100 mi from SEA to YYZ.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) route, aim to travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.
What airports do you fly into for Toronto from Seattle - Tacoma Intl. Airport (SEA)?
Browse your flight options from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ). This is the only airport in Toronto you can touch down at if you’re taking a direct flight.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ) last-minute?
Waiting until right before your break to book a flight from SEA to YYZ generally means paying more. Although you may find some last-minute deals, there’s no guarantee. Allow some flexibility in your schedule to boost your chances of getting a bargain.
Is it cheaper to book a SEA to YYZ flight and hotel package?
You’ll generally save money by securing a SEA to YYZ flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it’s easy to manage it all in one convenient place. Once you’ve selected your preferred accommodations and flights, consider adding extras such as tours, activities and car rentals.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Pearson Intl. Airport (YYZ)?
If you reserved your SEA to YYZ flight in the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the type of fare you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.
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