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Toronto Island

$123+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YTZ
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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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 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2910:39 pmSEA - YTZ
1 stop10h 01mMultiple Airlines
Tue 12/307:40 pmYTZ - SEA
1 stop22h 05mMultiple Airlines
Deal found 12/16$932
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/253:49 pmSEA - YTZ
2 stops15h 46mMultiple Airlines
Thu 1/17:40 pmYTZ - SEA
1 stop17h 56mMultiple Airlines
Deal found 12/17$1,186
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/245:59 pmSEA - YTZ
2 stops16h 21mMultiple Airlines
Mon 12/297:40 pmYTZ - SEA
1 stop17h 56mMultiple Airlines
Deal found 12/16$1,218
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/2410:39 pmSEA - YTZ
1 stop11h 41mMultiple Airlines
Sun 12/287:40 pmYTZ - SEA
1 stop17h 56mMultiple Airlines
Deal found 12/16$1,232
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 12/2610:39 pmSEA - YTZ
1 stop8h 56mMultiple Airlines
Fri 1/23:00 pmYTZ - SEA
1 stop11h 05mMultiple Airlines
Deal found 12/17$1,327
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/255:59 pmSEA - YTZ
2 stops13h 36mMultiple Airlines
Sun 12/283:00 pmYTZ - SEA
1 stop11h 05mMultiple Airlines
Deal found 12/16$1,364

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 18, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$288
(Mytrip)

One-way from

$123
(Air Canada)

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.
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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, 6% 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
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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 18, 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

Fri 1/30

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Fri 2/6

8:30 pm-2:31 pm

2 stops21h 01m

$288

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/17

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Sat 1/24

3:30 pm-9:31 am

2 stops21h 01m

$303

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/31

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sat 2/7

6:30 pm-2:31 pm

2 stops23h 01m

$311

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/17

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Tue 1/20

8:30 pm-7:16 pm

2 stops25h 46m

$329

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/30

11:55 am-9:42 am

3 stops18h 47m

Toronto Island

Fri 2/6

4:30 pm-10:25 am

3 stops20h 55m

$363

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/23

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sun 1/25

8:30 am-9:15 am

2 stops27h 45m

$394

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 1/11

3:10 pm-9:20 pm

3 stops27h 10m

Toronto Island

Sat 1/17

4:40 pm-10:22 am

3 stops20h 42m

$409

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/23

8:43 am-7:50 pm

1 stop8h 07m

Toronto Island

Wed 1/28

3:00 pm-9:28 pm

1 stop9h 28m

$462

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 2/4

10:09 am-10:10 pm

1 stop9h 01m

Toronto Island

Fri 2/6

3:00 pm-9:28 pm

1 stop9h 28m

$472

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 3/17

10:45 pm-10:35 am

1 stop8h 50m

Toronto Island

Tue 3/24

3:00 pm-9:43 pm

1 stop9h 43m

$488

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 17 results
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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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