HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Toronto Island

$107+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Jan 7 — Jan 141
Wed 1/7
Wed 1/14
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

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 December 8, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/275:49 pmSEA - YTZ
2 stops13h 46mMultiple Airlines
Thu 1/17:40 pmYTZ - SEA
1 stop17h 56mMultiple Airlines
Deal found 12/8$559
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/278:04 amSEA - YTZ
1 stop10h 11mMultiple Airlines
Fri 1/27:45 amYTZ - SEA
2 stops16h 47mMultiple Airlines
Deal found 12/8$592
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/273:59 pmSEA - YTZ
1 stop13h 56mMultiple Airlines
Tue 12/308:00 amYTZ - SEA
1 stop16h 30mMultiple Airlines
Deal found 12/8$615
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/273:59 pmSEA - YTZ
1 stop13h 56mMultiple Airlines
Mon 12/298:30 pmYTZ - SEA
2 stops18h 19mMultiple Airlines
Deal found 12/7$660
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/296:04 amSEA - YTZ
1 stop10h 46mMultiple Airlines
Tue 1/61:30 pmYTZ - SEA
1 stop9h 02mMultiple Airlines
Deal found 12/7$773
This Kiwi.com deal was found by Cheapflights users on 12/6. 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 12/195:49 pmSEA - YTZ
2 stops14h 51mMultiple Airlines
Sat 12/203:00 pmYTZ - SEA
1 stop9h 21mMultiple Airlines
Deal found 12/6$807
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/2711:10 pmSEA - YTZ
2 stops14h 38mMultiple Airlines
Wed 12/313:00 pmYTZ - SEA
1 stop8h 51mMultiple Airlines
Deal found 12/7$825
This Kiwi.com deal was found by Cheapflights users on 12/8. 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 12/1810:04 amSEA - YTZ
1 stop8h 11mMultiple Airlines
Thu 12/251:30 pmYTZ - SEA
2 stops11h 02mMultiple Airlines
Deal found 12/8$831
This Kiwi.com deal was found by Cheapflights users on 12/7. 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 12/149:35 pmSEA - YTZ
1 stop10h 00mMultiple Airlines
Sun 12/217:00 amYTZ - SEA
2 stops14h 50mMultiple Airlines
Deal found 12/7$920

Find 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 December 8, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$294
(Air Canada)

One-way from

$107
(Flightnetwork)

Popular in

December

Cheapest in

November

Average price

$553
Provider with most accurate pricing for Seattle/Tacoma Intl-Toronto (YTO) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Toronto (YTO) flights.
Search Deals
From Seattle/Tacoma Intl to Toronto Island
Search Deals
One-way flight from Seattle/Tacoma Intl to Toronto Island
Search Deals
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 8, 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

Wed 1/21

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Wed 1/28

10:30 am-7:16 pm

2 stops11h 46m

$416

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/23

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Sun 1/25

10:30 am-10:06 pm

2 stops14h 36m

$470

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 3/20

8:00 am-7:50 pm

1 stop8h 50m

Toronto Island

Fri 3/27

3:00 pm-10:39 pm

2 stops10h 39m

$490

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 3/21

6:05 am-7:50 pm

1 stop10h 45m

Toronto Island

Thu 3/26

1:30 pm-8:43 pm

1 stop10h 13m

$501

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 1/21

10:09 am-10:10 pm

1 stop9h 01m

Toronto Island

Wed 1/28

1:30 pm-9:28 pm

1 stop10h 58m

$512

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/10

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sat 1/17

8:30 pm-7:16 pm

2 stops25h 46m

$524

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 3/19

8:00 am-7:50 pm

1 stop8h 50m

Toronto Island

Tue 3/24

9:25 am-6:44 pm

1 stop12h 19m

$526

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 3/22

6:05 am-10:10 pm

1 stop13h 05m

Toronto Island

Tue 3/31

12:30 pm-6:44 pm

1 stop9h 14m

$526

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 3/20

6:05 am-6:55 pm

1 stop9h 50m

Toronto Island

Tue 3/24

3:00 pm-9:43 pm

1 stop9h 43m

$526

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 1/5

10:39 pm-10:35 am

1 stop8h 56m

Toronto Island

Mon 1/12

3:00 pm-9:28 pm

1 stop9h 28m

$539

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 20 results
1
2

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

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.