HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Toronto Island

$98+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Toronto Island with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$287
(Air Canada)

One-way from

$98
(Air Canada)

Popular in

June

Cheapest in

January

Average price

$294
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto Island flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto Island flights.
Search Deals
From Seattle/Tacoma Intl to Toronto Island
Search Deals
One-way flight from Seattle/Tacoma Intl to Toronto Island
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($72 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 26, 2025.

This Air Canada deal was found by Cheapflights users on 11/26. 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.
Mon 12/153:40 pmSEA - YTZ
2 stops20h 15mAir Canada
Thu 1/158:30 amYTZ - SEA
2 stops13h 46mAir Canada
Deal found 11/26$375
This Kiwi.com deal was found by Cheapflights users on 11/26. 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 12/159:35 pmSEA - YTZ
1 stop12h 45mMultiple Airlines
Thu 1/157:00 amYTZ - SEA
2 stops14h 49mMultiple Airlines
Deal found 11/26$435
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 12/2912:25 amSEA - YTZ
1 stop15h 32mMultiple Airlines
Mon 1/58:50 amYTZ - SEA
1 stop14h 10mMultiple Airlines
Deal found 11/24$482
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 12/96:06 amSEA - YTZ
1 stop9h 49mMultiple Airlines
Fri 12/126:45 amYTZ - SEA
1 stop17h 06mMultiple Airlines
Deal found 11/24$552
This Kiwi.com deal was found by Cheapflights users on 11/24. 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.
Thu 12/1110:00 amSEA - YTZ
1 stop9h 10mMultiple Airlines
Mon 12/157:00 amYTZ - SEA
2 stops19h 19mMultiple Airlines
Deal found 11/24$626
This Air Canada deal was found by Cheapflights users on 11/25. 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.
Sun 12/145:50 amSEA - YTZ
2 stops9h 23mAir Canada
Thu 12/183:30 pmYTZ - SEA
2 stops21h 01mAir Canada
Deal found 11/25$628
This Mytrip deal was found by Cheapflights users on 11/25. 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.
Sun 12/1411:55 amSEA - YTZ
3 stops26h 30mMultiple Airlines
Thu 12/182:05 pmYTZ - SEA
3 stops35h 43mMultiple Airlines
Deal found 11/25$630

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 26, 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 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

$287

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 1/14

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sun 1/18

8:30 pm-2:31 pm

2 stops21h 01m

$308

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/9

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Fri 1/16

7:00 am-2:31 pm

2 stops10h 31m

$318

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 12/15

3:40 pm-2:55 pm

2 stops20h 15m

Toronto Island

Thu 1/15

8:30 am-7:16 pm

2 stops13h 46m

$375

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/8

8:00 pm-6:13 pm

2 stops19h 13m

Toronto Island

Thu 1/15

10:30 am-7:16 pm

2 stops11h 46m

$387

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 5/2

8:20 am-9:31 pm

1 stop10h 11m

$98

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 5/3

8:20 am-9:31 pm

1 stop10h 11m

$98

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 5/7

8:20 am-9:31 pm

1 stop10h 11m

$98

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 1/20

5:50 am-6:13 pm

2 stops9h 23m

$111

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/22

8:00 pm-11:42 am

2 stops12h 42m

$122

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

Showing 1-10 of 16 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 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.