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Toronto Island

$111+ 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 12/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
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 November 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$298
(Air Canada)

One-way from

$111
(Air Canada)

Popular in

June

Cheapest in

February

Average price

$294
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. 15% potential increase in price ($71 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 November 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 November 20, 2025.

This Air Canada deal was found by Cheapflights users on 11/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/248:00 pmSEA - YTZ
2 stops18h 55mAir Canada
Tue 1/68:30 pmYTZ - SEA
2 stops21h 01mAir Canada
Deal found 11/18$350
This Air Canada deal was found by Cheapflights users on 11/18. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 pmSEA - YTZ
2 stops20h 55mAir Canada
Tue 1/68:30 pmYTZ - SEA
2 stops21h 01mAir Canada
Deal found 11/18$360
This Mytrip deal was found by Cheapflights users on 11/19. 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.
Thu 12/113:10 pmSEA - YTZ
3 stops23h 33mMultiple Airlines
Mon 12/154:30 pmYTZ - SEA
3 stops24h 50mMultiple Airlines
Deal found 11/19$488
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/89:35 pmSEA - YTZ
1 stop10h 00mMultiple Airlines
Thu 12/113:00 pmYTZ - SEA
1 stop8h 51mMultiple Airlines
Deal found 11/19$519
This Kiwi.com deal was found by Cheapflights users on 11/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3011:25 pmSEA - YTZ
1 stop9h 50mMultiple Airlines
Mon 1/59:20 amYTZ - SEA
2 stops18h 21mMultiple Airlines
Deal found 11/19$528
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:06 amSEA - YTZ
2 stops12h 57mMultiple Airlines
Sat 12/131:30 pmYTZ - SEA
1 stop10h 21mMultiple Airlines
Deal found 11/20$540
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/69:35 pmSEA - YTZ
1 stop10h 00mMultiple Airlines
Sat 12/131:30 pmYTZ - SEA
1 stop10h 21mMultiple Airlines
Deal found 11/20$542
This Kiwi.com deal was found by Cheapflights users on 11/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:06 amSEA - YTZ
1 stop10h 44mMultiple Airlines
Thu 12/113:00 pmYTZ - SEA
1 stop8h 51mMultiple Airlines
Deal found 11/20$547

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 November 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 1/3

8:00 pm-9:55 am

2 stops10h 55m

Toronto Island

Sat 1/10

6:30 pm-2:31 pm

2 stops23h 01m

$298

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 2/5

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Mon 2/9

8:30 pm-2:31 pm

2 stops21h 01m

$320

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/24

8:00 pm-5:55 pm

2 stops18h 55m

Toronto Island

Tue 1/6

8:30 pm-2:31 pm

2 stops21h 01m

$350

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 12/25

8:00 pm-7:55 pm

2 stops20h 55m

Toronto Island

Tue 1/6

8:30 pm-2:31 pm

2 stops21h 01m

$360

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/10

11:18 am-10:03 pm

2 stops31h 45m

Toronto Island

Sat 1/17

12:30 pm-9:28 pm

1 stop11h 58m

$436

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/23

8:43 am-7:50 pm

1 stop8h 07m

Toronto Island

Sun 1/25

1:30 pm-7:55 pm

1 stop9h 25m

$462

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 1/26

10:09 am-10:10 pm

1 stop9h 01m

Toronto Island

Thu 1/29

1:30 pm-7:55 pm

1 stop9h 25m

$479

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 12/11

3:10 pm-5:43 pm

3 stops23h 33m

Toronto Island

Mon 12/15

4:30 pm-2:20 pm

3 stops24h 50m

$488

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 2/4

10:09 am-10:10 pm

1 stop9h 01m

Toronto Island

Sat 2/14

1:30 pm-10:54 pm

1 stop12h 24m

$489

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 1/28

10:09 am-10:10 pm

1 stop9h 01m

Toronto Island

Tue 2/3

1:30 pm-9:28 pm

1 stop10h 58m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/20

Showing 1-10 of 22 results
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  • 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 10h 55m. 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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