Find flights
When to book
FAQs

Cheap flights from Toronto Island Airport to Seattle from C$ 257

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 25/12. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Toronto Island to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Toronto Island (YTZ) to Seattle (SEA). 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 28 October 2025.

Round-trip from

C$ 456

One-way from

C$ 257

Popular in

December

Cheapest in

February

Average price

C$ 462
Air Canada
  • Air Canada
  • 2/3-3/3
  • 4 total stops
  • 32h 01m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 25/12
  • 2 total stops
  • 18h 01m total
  • Toronto to Seattle
Search Deals
High demand for flights, 4% potential price rise
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Toronto Island to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Toronto Island to Seattle
Explore the most affordable flight options available from Toronto Island to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Mon 8/126:30 p.m.YTZ - SEA
2 stops23h 01mAir Canada
Fri 12/125:50 a.m.SEA - YTZ
2 stops9h 23mAir Canada
Deal found 27/10C$ 497
Tue 9/1212:30 p.m.YTZ - SEA
1 stop11h 21mMultiple Airlines
Tue 16/129:35 p.m.SEA - YTZ
2 stops15h 23mMultiple Airlines
Deal found 26/10C$ 681
Wed 10/123:00 p.m.YTZ - SEA
2 stops10h 45mMultiple Airlines
Wed 17/128:44 a.m.SEA - YTZ
1 stop8h 06mMultiple Airlines
Deal found 26/10C$ 698
Sat 6/121:30 p.m.YTZ - SEA
1 stop10h 21mMultiple Airlines
Sat 13/129:35 p.m.SEA - YTZ
2 stops15h 23mMultiple Airlines
Deal found 27/10C$ 702
Mon 8/123:00 p.m.YTZ - SEA
1 stop11h 19mMultiple Airlines
Fri 12/128:44 a.m.SEA - YTZ
1 stop8h 06mMultiple Airlines
Deal found 27/10C$ 705
Thu 20/117:40 p.m.YTZ - SEA
1 stop17h 45mMultiple Airlines
Mon 24/118:39 a.m.SEA - YTZ
1 stop9h 36mMultiple Airlines
Deal found 25/10C$ 729
Thu 11/127:10 a.m.YTZ - SEA
2 stops10h 21mAir Canada
Thu 18/128:00 p.m.SEA - YTZ
2 stops15h 55mAir Canada
Deal found 27/10C$ 738
Thu 11/123:00 p.m.YTZ - SEA
1 stop11h 19mMultiple Airlines
Thu 18/1210:39 p.m.SEA - YTZ
1 stop10h 01mMultiple Airlines
Deal found 26/10C$ 747
Mon 10/118:30 p.m.YTZ - SEA
1 stop17h 05mMultiple Airlines
Sun 16/118:48 a.m.SEA - YTZ
1 stop20h 32mMultiple Airlines
Deal found 27/10C$ 761

Cheapflights Fare Finder

 
Customize your flight search to find flights from Toronto Island to Seattle 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 629,999 searches. Data last updated 28 October 2025.
Use the filters below to find and compare flights from Toronto Island Airport to Seattle that are best for you.

Fly from

Toronto Island

Fly to

Seattle

Route

Depart

Return

Price

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 2/3

8:30 p.m.-3:01 p.m.

2 stops21h 31m

Seattle/Tacoma Intl

Tue 3/3

8:00 p.m.-9:30 a.m.

2 stops10h 30m

C$ 456

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 5/2

3:00 p.m.-9:28 p.m.

1 stop9h 28m

Seattle/Tacoma Intl

Mon 9/2

8:43 a.m.-7:50 p.m.

1 stop8h 07m

C$ 642

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 18/3

9:15 a.m.-9:41 p.m.

1 stop15h 26m

Seattle/Tacoma Intl

Sun 22/3

11:00 p.m.-1:42 p.m.

1 stop11h 42m

C$ 660

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 8/12

3:00 p.m.-11:19 p.m.

1 stop11h 19m

Seattle/Tacoma Intl

Fri 12/12

8:44 a.m.-7:50 p.m.

1 stop8h 06m

C$ 705

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 11/12

7:10 a.m.-2:31 p.m.

2 stops10h 21m

Seattle/Tacoma Intl

Thu 18/12

8:00 p.m.-2:55 p.m.

2 stops15h 55m

C$ 738

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 11/12

4:30 p.m.-7:04 a.m.

2 stops17h 34m

Seattle/Tacoma Intl

Thu 18/12

10:39 p.m.-10:35 a.m.

1 stop8h 56m

C$ 741

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 20/2

1:30 p.m.-9:40 p.m.

1 stop11h 10m

Seattle/Tacoma Intl

Sun 22/2

6:15 a.m.-7:50 p.m.

1 stop10h 35m

C$ 768

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 8/12

8:55 a.m.-9:30 p.m.

1 stop15h 35m

Seattle/Tacoma Intl

Thu 11/12

10:11 p.m.-1:10 p.m.

1 stop11h 59m

C$ 773

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 25/12

6:30 p.m.-9:31 a.m.

2 stops18h 01m

C$ 257

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 22/1

9:15 a.m.-6:22 p.m.

1 stop12h 07m

C$ 283

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 15 results
1
2

Best time to book a flight from Toronto Island to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Toronto Island 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 Toronto Island to Seattle. 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 into for flights to Seattle from Toronto Island?

    Seattle/Tacoma Intl (SEA), located 18.4 km from the city centre, is the airport you fly into when you book flights from Toronto Island to Seattle. 0 airlines have flights to Seattle/Tacoma Intl from Toronto Island on a regular basis. Booking flights from Toronto Island to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Toronto Island per day.

  • How long is the flight from Toronto Island Airport to Seattle?

    Airlines like Air Canada fly from Toronto Island Airport to Seattle in about 21h 31m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 3323 km.

  • Can I find deals for flights from Toronto Island to Seattle that include hotel bookings?

    Yes. In addition to deals on Toronto Island to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Toronto Island to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Toronto Island to Seattle.

  • Can I find deals for business class flights from Toronto Island to Seattle?

    Yes. Cheapflights offers flight deals from Toronto Island to Seattle 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Tukwila
Tacoma
Mukilteo
Bothell
Cashmere
Renton
Olympia
Marysville
Lynnwood

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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Toronto Island to Seattle?

Cheapflights makes it easy to find Toronto Island to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Toronto Island to Seattle?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Toronto Island to Seattle for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Toronto Island to Seattle with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Toronto Island to Seattle flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Toronto Island to Seattle become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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.