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Toronto Island

$131+ 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 1/25. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$372
(Trip.com)

One-way from

$131
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$318
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 ($69 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 6, 2025.

This Trip.com deal was found by Cheapflights users on 11/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:00 pmSEA - YTZ
2 stops10h 42mAir Canada
Sun 12/76:30 pmYTZ - SEA
2 stops23h 01mAir Canada
Deal found 11/6$372
This Gotogate deal was found by Cheapflights users on 11/5. 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.
Wed 12/35:50 amSEA - YTZ
2 stops9h 23mAir Canada
Wed 12/1010:25 amYTZ - SEA
2 stops15h 21mAir Canada
Deal found 11/5$383
This Gotogate deal was found by Cheapflights users on 11/5. 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.
Fri 11/2810:05 amSEA - YTZ
2 stops20h 50mAir Canada
Thu 12/48:30 amYTZ - SEA
2 stops13h 46mAir Canada
Deal found 11/5$434
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/305:49 pmSEA - YTZ
1 stop16h 53mMultiple Airlines
Mon 1/59:15 amYTZ - SEA
1 stop12h 01mMultiple Airlines
Deal found 11/4$451
This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Wed 12/38:40 amSEA - YTZ
1 stop8h 20mMultiple Airlines
Wed 12/108:55 amYTZ - SEA
2 stops18h 17mMultiple Airlines
Deal found 11/3$466
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/58:40 amSEA - YTZ
1 stop8h 20mMultiple Airlines
Sun 12/78:55 amYTZ - SEA
1 stop15h 35mMultiple Airlines
Deal found 11/6$472
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 12/179:35 pmSEA - YTZ
1 stop10h 00mMultiple Airlines
Wed 12/249:15 amYTZ - SEA
1 stop14h 43mMultiple Airlines
Deal found 11/5$495
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Sun 12/2810:39 pmSEA - YTZ
1 stop8h 56mMultiple Airlines
Mon 1/59:15 amYTZ - SEA
1 stop12h 01mMultiple Airlines
Deal found 11/5$498
This Kiwi.com deal was found by Cheapflights users on 11/5. 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.
Wed 12/1711:05 pmSEA - YTZ
1 stop11h 15mMultiple Airlines
Mon 12/229:15 amYTZ - SEA
1 stop12h 01mMultiple Airlines
Deal found 11/5$510

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 6, 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

Thu 12/4

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sun 12/7

6:30 pm-2:31 pm

2 stops23h 01m

$372

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 11/28

10:05 am-9:55 am

2 stops20h 50m

Toronto Island

Thu 12/4

8:30 am-7:16 pm

2 stops13h 46m

$438

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/3

8:40 am-8:00 pm

1 stop8h 20m

Toronto Island

Wed 12/10

8:55 am-12:12 am

2 stops18h 17m

$466

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 12/5

8:40 am-8:00 pm

1 stop8h 20m

Toronto Island

Sun 12/7

8:55 am-9:30 pm

1 stop15h 35m

$472

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/8

8:43 am-7:50 pm

1 stop8h 07m

Toronto Island

Mon 1/12

1:30 pm-7:55 pm

1 stop9h 25m

$481

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/29

8:43 am-10:10 pm

1 stop10h 27m

Toronto Island

Mon 2/2

12:30 pm-7:55 pm

1 stop10h 25m

$482

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 12/5

10:00 am-9:15 pm

1 stop8h 15m

Toronto Island

Tue 12/9

12:30 pm-12:12 am

2 stops14h 42m

$514

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 11/27

10:55 pm-4:43 pm

2 stops14h 48m

Toronto Island

Sun 11/30

4:30 pm-10:22 am

3 stops20h 52m

$514

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/17

10:00 am-9:15 pm

1 stop8h 15m

Toronto Island

Thu 12/18

9:15 am-6:16 pm

1 stop12h 01m

$538

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/1

6:27 pm-6:57 pm

2 stops21h 30m

Toronto Island

Thu 1/8

2:05 pm-10:23 am

3 stops23h 18m

$549

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

Showing 1-10 of 19 results
1
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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 42m. 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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