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Cheap flights from Toronto Island Airport to Seattle from C$ 243

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 25/1. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 12 December 2025.

Thu 25/123:00 p.m.YTZ - SEA
1 stop11h 05mMultiple Airlines
Sat 27/125:49 p.m.SEA - YTZ
2 stops13h 46mMultiple Airlines
Deal found 11/12C$ 786
Tue 30/126:30 p.m.YTZ - SEA
2 stops23h 01mAir Canada
Mon 5/18:00 p.m.SEA - YTZ
2 stops22h 35mAir Canada
Deal found 12/12C$ 870
Mon 29/126:30 p.m.YTZ - SEA
2 stops31h 16mAir Canada
Mon 5/18:00 p.m.SEA - YTZ
2 stops22h 35mAir Canada
Deal found 12/12C$ 896
Sun 28/126:30 p.m.YTZ - SEA
2 stops23h 01mAir Canada
Mon 5/18:00 p.m.SEA - YTZ
2 stops22h 35mAir Canada
Deal found 12/12C$ 1,016
Wed 24/129:15 a.m.YTZ - SEA
1 stop12h 01mMultiple Airlines
Tue 6/110:04 a.m.SEA - YTZ
1 stop9h 06mMultiple Airlines
Deal found 9/12C$ 1,160
Mon 15/123:00 p.m.YTZ - SEA
1 stop11h 19mMultiple Airlines
Mon 5/18:19 a.m.SEA - YTZ
1 stop10h 51mMultiple Airlines
Deal found 11/12C$ 1,232
Mon 29/126:30 p.m.YTZ - SEA
2 stops23h 01mAir Canada
Sun 4/18:00 p.m.SEA - YTZ
2 stops19h 13mAir Canada
Deal found 12/12C$ 1,299
Thu 25/126:00 p.m.YTZ - SEA
2 stops23h 20mMultiple Airlines
Thu 1/16:27 p.m.SEA - YTZ
2 stops21h 30mMultiple Airlines
Deal found 9/12C$ 1,342
Tue 30/127:40 p.m.YTZ - SEA
1 stop17h 56mMultiple Airlines
Mon 5/16:04 a.m.SEA - YTZ
1 stop12h 11mMultiple Airlines
Deal found 10/12C$ 1,376

Find 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 12 December 2025.

Round-trip from

C$ 412

One-way from

C$ 243

Popular in

June

Cheapest in

February

Average price

C$ 556
Air Canada
  • Air Canada
  • 26/1-2/2
  • 4 total stops
  • 36h 28m total
  • Toronto to Seattle
Search Deals
25/1
  • 25/1
  • 2 total stops
  • 16h 39m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 78 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 11 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 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 12 December 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 26/1

8:30 p.m.-7:16 p.m.

2 stops25h 46m

Seattle/Tacoma Intl

Mon 2/2

8:00 p.m.-9:42 a.m.

2 stops10h 42m

C$ 412

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sun 25/1

6:30 p.m.-2:31 p.m.

2 stops23h 01m

Seattle/Tacoma Intl

Sun 1/2

8:00 p.m.-11:42 a.m.

2 stops12h 42m

C$ 439

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 20/2

9:20 a.m.-6:40 p.m.

1 stop12h 20m

Seattle/Tacoma Intl

Wed 25/2

5:55 p.m.-1:47 p.m.

1 stop16h 52m

C$ 468

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 24/2

9:20 a.m.-6:40 p.m.

1 stop12h 20m

Seattle/Tacoma Intl

Fri 27/2

5:55 p.m.-3:32 p.m.

1 stop18h 37m

C$ 472

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 18/4

3:35 p.m.-10:08 p.m.

2 stops9h 33m

Seattle/Tacoma Intl

Sat 25/4

10:10 a.m.-8:52 a.m.

2 stops19h 42m

C$ 490

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 19/1

4:30 p.m.-7:15 a.m.

2 stops17h 45m

Seattle/Tacoma Intl

Fri 23/1

10:09 a.m.-10:10 p.m.

1 stop9h 01m

C$ 519

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 26/1

7:40 p.m.-9:28 p.m.

1 stop28h 48m

Seattle/Tacoma Intl

Mon 2/2

11:05 p.m.-5:43 p.m.

2 stops15h 38m

C$ 536

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sun 25/1

7:00 a.m.-10:22 a.m.

3 stops30h 22m

Seattle/Tacoma Intl

Sun 1/2

3:40 p.m.-4:13 p.m.

3 stops21h 33m

C$ 545

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sun 11/1

2:05 p.m.-10:22 a.m.

3 stops23h 17m

Seattle/Tacoma Intl

Fri 16/1

11:55 a.m.-4:13 p.m.

3 stops25h 18m

C$ 575

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 24/1

12:30 p.m.-9:28 p.m.

1 stop11h 58m

Seattle/Tacoma Intl

Sat 31/1

11:05 p.m.-7:50 p.m.

2 stops17h 45m

C$ 586

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 16 results
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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 25h 46m. 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
Mukilteo
Tacoma
Bothell
Cashmere
Olympia
Renton
Marysville
Lynnwood

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