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Cheap flights from Toronto Island Airport to Seattle from C$ 319

YTZ — SEA
11 Oct — 18 Oct1
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

Sun 18/103:35 p.m. -
2 stops10h 12m
Mon 19/105:50 a.m. -
2 stops9h 30m
Deal found 9/9C$ 522
Mon 19/103:35 p.m. -
2 stops10h 12m
Tue 20/107:15 p.m. -
2 stops13h 35m
Deal found 9/9C$ 526
Sat 17/104:30 p.m. -
2 stops20h 35m
Sun 18/107:15 p.m. -
2 stops12h 40m
Deal found 9/9C$ 553
Tue 27/1010:35 a.m. -
1 stop10h 53m
Fri 30/1011:41 p.m. -
1 stop12h 25m
Deal found 6/9C$ 576
Tue 27/1010:35 a.m. -
1 stop10h 53m
Thu 29/108:32 a.m. -
1 stop9h 34m
Deal found 6/9C$ 583
Tue 10/1110:35 a.m. -
1 stop13h 54m
Mon 16/1111:42 p.m. -
1 stop12h 24m
Deal found 8/9C$ 602
Mon 9/1110:35 a.m. -
1 stop11h 13m
Mon 16/118:44 a.m. -
1 stop9h 22m
Deal found 8/9C$ 608
Mon 26/1010:35 a.m. -
1 stop14h 24m
Fri 30/1011:41 p.m. -
1 stop12h 25m
Deal found 6/9C$ 616
Mon 26/1010:35 a.m. -
1 stop14h 24m
Thu 29/108:32 a.m. -
1 stop9h 34m
Deal found 6/9C$ 623
Fri 23/1010:30 a.m. -
2 stops11h 15m
Fri 30/1010:33 a.m. -
1 stop7h 33m
Deal found 8/9C$ 633
Wed 7/109:30 a.m. -
2 stops16h 17m
Sun 11/105:50 a.m. -
2 stops12h 40m
Deal found 6/9C$ 651

Find flight deals from Toronto Island to Seattle

Round-trip from

C$ 522

One-way from

C$ 319

Popular in

June

Cheapest in

February

Average price

C$ 561
Air Canada
  • Air Canada
  • 18/10-19/10
  • 4 total stops
  • 19h 42m total
  • Toronto to Seattle
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19/10-31/12
  • 19/10-31/12
  • 2 total stops
  • 26h 40m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in September 2026
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Toronto Island Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Mon 19/10

7:05 p.m.-6:45 p.m.

2 stops26h 40m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 319

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Mon 9/11

4:15 p.m.-3:12 p.m.

3 stops49h 57m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 350

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Sun 18/10

7:05 p.m.-6:45 p.m.

2 stops26h 40m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 351

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 9/10

7:05 p.m.-9:40 a.m.

2 stops41h 35m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 388

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Sat 14/11

4:35 p.m.-9:50 a.m.

1 stop20h 15m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 403
Quickest round-trip

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Wed 7/10

12:15 p.m.-6:52 p.m.

1 stop9h 37m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 419

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 20/11

6:45 a.m.-8:57 a.m.

2 stops29h 12m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 424

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 23/10

12:15 p.m.-10:56 p.m.

1 stop13h 41m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 437

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Tue 6/10

12:15 p.m.-6:52 p.m.

1 stop9h 37m

Seattle/Tacoma Intl

Wed 31/12

12:00 a.m.-3:00 a.m.

Nonstop0h 00m

C$ 437

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Wed 7/10

8:30 a.m.-10:47 p.m.

2 stops17h 17m

Seattle/Tacoma Intl

Sun 11/10

7:15 p.m.-11:50 a.m.

2 stops13h 35m

C$ 674

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/9

Showing 1-10 of 19 resultsSorted by cheapest first
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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

Related info for your journey

  • 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 United Airlines fly from Toronto Island Airport to Seattle in about 10h. 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
SeaTac
Kent
Mukilteo
Leavenworth
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

Browse thousands of different options on Cheapflights for your next trip

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