$152 Cheap Flights from Toronto (YYZ) to Seattle (SEA)

View $152 flight on Wed, Oct 1, 2025Opens in a new window

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

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Cheap Flights from Toronto to Seattle (YYZ-SEA)

Prices were available within the past 7 days and start at $152 for one-way flights and $208 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Wed, Oct 1 - Tue, Oct 7
YYZ
Toronto
SEA
Seattle
$208 Roundtrip, found 3 days ago
$208
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Oct 1 from Toronto to Seattle, returning Tue, Oct 7, priced at $208 found 3 days ago
Alaska Airlines
Sat, Nov 8 - Mon, Nov 10
YYZ
Toronto
SEA
Seattle
$214 Roundtrip, found 3 days ago
$214
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Toronto to Seattle, returning Mon, Nov 10, priced at $214 found 3 days ago
Air Canada
Tue, Sep 30 - Tue, Oct 28
YYZ
Toronto
SEA
Seattle
$223 Roundtrip, found 3 days ago
$223
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Sep 30 from Toronto to Seattle, returning Tue, Oct 28, priced at $223 found 3 days ago
Air Canada
Sat, Nov 8 - Mon, Nov 10
YYZ
Toronto
SEA
Seattle
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Nov 8 from Toronto to Seattle, returning Mon, Nov 10, priced at $224 found 3 days ago
Air Canada
Tue, Sep 30 - Tue, Oct 28
YYZ
Toronto
SEA
Seattle
$225 Roundtrip, found 3 days ago
$225
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Sep 30 from Toronto to Seattle, returning Tue, Oct 28, priced at $225 found 3 days ago
Air Canada
Wed, Nov 5 - Tue, Nov 11
YYZ
Toronto
SEA
Seattle
$229 Roundtrip, found 3 days ago
$229
Roundtrip
found 3 days ago
Select Air Canada flight, departing Wed, Nov 5 from Toronto to Seattle, returning Tue, Nov 11, priced at $229 found 3 days ago
Alaska Airlines
Wed, Oct 1 - Tue, Oct 7
YYZ
Toronto
SEA
Seattle
$230 Roundtrip, found 3 days ago
$230
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Wed, Oct 1 from Toronto to Seattle, returning Tue, Oct 7, priced at $230 found 3 days ago
United
Wed, Nov 19 - Mon, Nov 24
YYZ
Toronto
SEA
Seattle
$239 Roundtrip, found 4 days ago
$239
Roundtrip
found 4 days ago
Select United flight, departing Wed, Nov 19 from Toronto to Seattle, returning Mon, Nov 24, priced at $239 found 4 days ago
WestJet
Tue, Sep 16 - Wed, Oct 1
YYZ
Toronto
SEA
Seattle
$252 Roundtrip, found 10 hours ago
$252
Roundtrip
found 10 hours ago
Select WestJet flight, departing Tue, Sep 16 from Toronto to Seattle, returning Wed, Oct 1, priced at $252 found 10 hours ago
American Airlines
Tue, Nov 18 - Wed, Nov 19
YYZ
Toronto
SEA
Seattle
$263 Roundtrip, found 2 days ago
$263
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Nov 18 from Toronto to Seattle, returning Wed, Nov 19, priced at $263 found 2 days ago

Find the cheapest month to fly from Toronto (YYZ) to Seattle (SEA)

October is typically the cheapest month to fly

From $228 - $333 per traveler.

Graph displaying average flight prices per month

Alternative airports near Seattle

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Seattle - Tacoma Intl. SEA. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $421
SEA
Seattle - Tacoma Intl.
Cheapest
Average driving time to city center20 min
Flights from $421
Flights from Toronto (YYZ) to Seattle (SEA)
Origin airport
Pearson Intl.
Destination airport
Seattle - Tacoma Intl.
Airlines serving
Air Canada, Alaska Airlines, American Airlines, Delta, United, WestJet
Roundtrip price
$202
Distance
2055 mi
Average flight time
2 hours 21 mins

Toronto to Seattle Flights

The cheapest times to fly from Toronto to Seattle

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Toronto to Seattle are during the month of October. You can find some of the cheapest flights from Toronto to Seattle with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Toronto to Seattle

Sunday is one of the best days to book for cheap flights from Toronto to Seattle: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Toronto to Seattle

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Toronto to Seattle in 2025. You can also book with separate airlines for your outbound and return journeys, from $152 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Toronto to Seattle flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Toronto to Seattle airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA) cost?
Snag a cheap one-way flight from $152 or cheap return flight from $208 from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
The cheapest month to fly from YYZ to SEA is October, when demand is low. Off-peak season is usually when better flight deals are available between these airports.
Which airlines fly direct from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
Fly directly from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA) on an Alaska Airlines flight.
What is the cheapest airline that flies from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
While prices can change depending on your travel dates, Alaska Airlines and Air Canada are often among the top picks for flights between Pearson Intl. Airport (YYZ) and Seattle - Tacoma Intl. Airport (SEA). You can also compare airlines on Expedia and use the "Sort by" filter to find the best deal for your YYZ to SEA flight.
How many flights per day from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
Each day on average, 2 direct flights take off from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA). Select the departure time that best suits your plans.
What are the most popular departure times for flights from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
The 7 PM departures from YYZ to SEA are typically the busiest. Prices can be higher for these popular slots. If you're hoping to save money, pick a less crowded time to fly.
What day of the week has the most flights from YYZ to SEA?
If you depart on a Tuesday, you'll get the largest range of choices for flights from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA).
What is the earliest flight from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
The earliest flight leaving Pearson Intl. Airport (YYZ) is at around 4:20PM UTC-5. Catch this flight and you'll reach Seattle - Tacoma Intl. Airport (SEA) at approximately 6:43PM UTC-8. The entire trip takes 5h 23m.
How long does it take to fly from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
The average flight duration from YYZ to SEA is 5 hours and 24 minutes, covering a total distance of 2,100 mi.
What airline has the least delays from YYZ to SEA?
Alaska Airlines has the strongest track record for on-time direct flights from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA), with an on-time score of 80%. Use the Expedia App to see your flight schedule before you jet off and get real-time alerts about any trip changes.
What is the best time to fly from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
To avoid possible delays on the Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA) route, aim to travel before 3 PM. Later departures have a 22% higher chance of being canceled.**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 Seattle from Pearson Intl. Airport (YYZ)?
Seattle - Tacoma Intl. Airport (SEA) is the only airport in Seattle with direct flights from Pearson Intl. Airport (YYZ). Consider the options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA) last-minute?
Holding off until just before your departure to book your flight from YYZ to SEA often results in higher prices. While it's possible to find some last-minute deals, they're not always guaranteed. Keep your travel plans flexible to boost your chances of snagging a bargain.
Is it cheaper to book a YYZ to SEA flight and hotel package?
Compared with arranging flights and hotels separately, booking a YYZ to SEA flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of hotels, then customize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Pearson Intl. Airport (YYZ) to Seattle - Tacoma Intl. Airport (SEA)?
In most instances, you're able to reschedule or cancel your YYZ to SEA flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you want more information, visit our Customer Service portal.

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