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Toronto Island

$143+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Nov 19 — Nov 261
Wed 11/19
Wed 11/26
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 October 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$345
(Flightnetwork)

One-way from

$143
(Air Canada)

Popular in

June

Cheapest in

January

Average price

$436
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto Island flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto Island flights.
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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. 14% potential increase in price ($66 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 20, 2025.

This Mytrip deal was found by Cheapflights users on 10/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/65:50 amSEA - YTZ
2 stops9h 23mAir Canada
Sat 12/136:30 pmYTZ - SEA
2 stops23h 01mAir Canada
Deal found 10/19$345
This Booking.com deal was found by Cheapflights users on 10/19. 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 12/75:50 amSEA - YTZ
2 stops9h 23mAir Canada
Tue 12/163:30 pmYTZ - SEA
2 stops21h 01mAir Canada
Deal found 10/19$358
This Mytrip deal was found by Cheapflights users on 10/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:00 pmSEA - YTZ
2 stops12h 42mMultiple Airlines
Wed 12/103:15 pmYTZ - SEA
2 stops21h 16mMultiple Airlines
Deal found 10/18$364
This Flightnetwork deal was found by Cheapflights users on 10/19. 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.
Wed 12/35:50 amSEA - YTZ
2 stops9h 23mAir Canada
Wed 12/1012:30 pmYTZ - SEA
2 stops24h 01mAir Canada
Deal found 10/19$365
This Mytrip deal was found by Cheapflights users on 10/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/108:00 pmSEA - YTZ
2 stops10h 42mMultiple Airlines
Sun 12/143:15 pmYTZ - SEA
2 stops21h 16mMultiple Airlines
Deal found 10/19$398

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 October 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

Sat 12/6

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Sat 12/13

6:30 pm-2:31 pm

2 stops23h 01m

$345

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/3

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Wed 12/10

3:15 pm-9:31 am

2 stops21h 16m

$364

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/10

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sun 12/14

3:15 pm-9:31 am

2 stops21h 16m

$398

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/3

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Wed 12/10

10:30 am-7:16 pm

2 stops11h 46m

$406

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 11/15

8:48 am-7:50 pm

1 stop8h 02m

Toronto Island

Sat 11/22

7:00 am-2:39 pm

2 stops10h 39m

$434

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 11/19

10:05 am-9:15 pm

1 stop8h 10m

Toronto Island

Thu 11/20

7:00 am-2:36 pm

2 stops10h 36m

$435

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 12/4

5:50 am-9:35 pm

2 stops12h 45m

Toronto Island

Thu 12/11

8:30 am-7:16 pm

2 stops13h 46m

$438

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 11/16

8:00 pm-4:43 pm

2 stops17h 43m

Toronto Island

Sun 11/23

7:00 am-2:31 pm

2 stops10h 31m

$453

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 1/13

5:50 am-6:13 pm

2 stops9h 23m

$143

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 1/7

8:00 pm-9:42 am

2 stops10h 42m

$143

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/19

Showing 1-10 of 20 results
1
2
  • Most accurate provider: When it comes to deals on Seattle-Toronto Island Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Toronto Island Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Toronto Island Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Toronto Island Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Toronto Island Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 23m. 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.

See more FAQs

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