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Toronto Island

$127+ Cheap flights from Seattle (SEA) to Toronto Island (YTZ)

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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
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Cheap flight deals from Seattle to Toronto Island

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Toronto Island (YTZ). 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 August 20, 2025.

Round-trip from

$258
(Flightnetwork)

One-way from

$127
(Air Canada)

Popular in

June

Cheapest in

January

Average price

$471
From Seattle/Tacoma Intl to Toronto Island
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One-way flight from Seattle/Tacoma Intl to Toronto Island
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Highest demand for flights based on searches. 13% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Seattle to Toronto Island

Cheapest flights from Seattle to Toronto Island
Explore the most affordable flight options available from Seattle to Toronto Island. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Flightnetwork deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:15 amSEA - YTZ
1 stop9h 34mAir Canada
Tue 10/712:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/20$258
This Booking.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/227:15 amSEA - YTZ
1 stop9h 34mAir Canada
Tue 9/3012:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/20$266
This Booking.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/217:15 amSEA - YTZ
1 stop9h 34mAir Canada
Tue 9/3012:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/18$267
This Booking.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/157:15 amSEA - YTZ
1 stop9h 34mAir Canada
Tue 9/2312:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/18$269
This Booking.com deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/27:15 amSEA - YTZ
1 stop9h 34mAir Canada
Thu 10/912:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/18$273
This Gotogate deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/45:30 amSEA - YTZ
2 stops12h 11mAir Canada
Sat 10/114:10 pmYTZ - SEA
2 stops9h 16mAir Canada
Deal found 8/20$275
This Flightnetwork deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/255:30 amSEA - YTZ
2 stops12h 11mAir Canada
Wed 10/112:25 pmYTZ - SEA
1 stop10h 06mAir Canada
Deal found 8/18$277

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Island 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Seattle to Toronto Island Airport that are best for you.

Fly from

Seattle

Fly to

Toronto Island

Route

Depart

Return

Price

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 9/29

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Tue 10/7

12:25 pm-7:31 pm

1 stop10h 06m

$258

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 9/22

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Tue 9/30

12:25 pm-7:31 pm

1 stop10h 06m

$266

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 9/21

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Tue 9/30

12:25 pm-7:31 pm

1 stop10h 06m

$267

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 9/15

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Tue 9/23

12:25 pm-7:31 pm

1 stop10h 06m

$269

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 10/2

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Thu 10/9

12:25 pm-7:31 pm

1 stop10h 06m

$273

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 10/4

5:30 am-8:41 pm

2 stops12h 11m

Toronto Island

Sat 10/11

4:10 pm-10:26 pm

2 stops9h 16m

$275

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 9/25

5:30 am-8:41 pm

2 stops12h 11m

Toronto Island

Wed 10/1

12:25 pm-7:31 pm

1 stop10h 06m

$277

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 10/7

7:15 am-7:49 pm

1 stop9h 34m

$127

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 9/9

7:15 am-7:49 pm

1 stop9h 34m

$127

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 10/8

7:15 am-7:49 pm

1 stop9h 34m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/18

Showing 1-10 of 15 results
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Best time to book a flight from Seattle to Toronto Island

Have a flexible travel schedule? Discover the best time to fly to Toronto Island 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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Toronto Island. 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 Island?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Toronto Island. On average, Seattle/Tacoma Intl has 0 outbound flights to Toronto Island per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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

    There are many flights that can get you from Seattle to Toronto Island Airport in 9h 34m. Fly via Air Canada to get the fastest option. The distance between Seattle and Toronto Island Airport is about 2065 mi.

  • Can I find deals for flights from Seattle to Toronto Island that include hotel bookings?

    Yes. In addition to deals on Seattle to Toronto Island flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Toronto Island?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Toronto Island.

  • Can I find deals for business class flights from Seattle to Toronto Island?

    Yes. Cheapflights offers flight deals from Seattle to Toronto Island 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 Island Airport?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Toronto Island Airport (average of $228). Flying from Seattle to Toronto Island Airport in November is currently the most expensive (average of $321). 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

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