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Cheap flights from Toronto Island Airport to Seattle from C$ 239

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 30/5. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
9 Apr — 16 Apr1
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 10 March 2026.

Sat 4/43:40 p.m.
YTZ
-
SEA
2 stops10h 13m
Air Canada
Wed 6/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 7/3C$ 334
Sat 4/43:40 p.m.
YTZ
-
SEA
2 stops10h 13m
Air Canada
Thu 7/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 7/3C$ 345
Sat 4/43:40 p.m.
YTZ
-
SEA
2 stops10h 13m
Air Canada
Mon 13/48:00 p.m.
SEA
-
YTZ
2 stops11h 25m
Air Canada
Deal found 9/3C$ 357
Sat 4/43:40 p.m.
YTZ
-
SEA
2 stops10h 13m
Air Canada
Fri 8/510:30 a.m.
SEA
-
YTZ
2 stops20h 57m
Air Canada
Deal found 7/3C$ 388
Fri 3/46:55 p.m.
YTZ
-
SEA
2 stops23h 10m
Air Canada
Wed 6/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 7/3C$ 407
Sat 16/58:55 p.m.
YTZ
-
SEA
2 stops15h 55m
Air Canada
Sat 23/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 9/3C$ 408
Fri 10/46:30 p.m.
YTZ
-
SEA
2 stops31h 23m
Air Canada
Wed 20/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 8/3C$ 410
Fri 3/46:55 p.m.
YTZ
-
SEA
2 stops23h 10m
Air Canada
Thu 7/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 7/3C$ 417
Thu 21/56:55 p.m.
YTZ
-
SEA
2 stops17h 55m
Air Canada
Tue 26/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 9/3C$ 419
Thu 21/58:55 p.m.
YTZ
-
SEA
2 stops15h 55m
Air Canada
Sun 24/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 9/3C$ 429
Mon 13/48:30 p.m.
YTZ
-
SEA
2 stops25h 50m
Air Canada
Wed 6/57:20 p.m.
SEA
-
YTZ
2 stops12h 07m
Air Canada
Deal found 7/3C$ 433
Fri 17/43:40 p.m.
YTZ
-
SEA
2 stops10h 10m
Air Canada
Wed 22/45:40 a.m.
SEA
-
YTZ
2 stops9h 42m
Air Canada
Deal found 5/3C$ 434

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 10 March 2026.

Round-trip from

C$ 334

One-way from

C$ 239

Popular in

June

Cheapest in

February

Average price

C$ 445
Air Canada
  • Air Canada
  • 4/4-6/5
  • 4 total stops
  • 22h 20m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 30/5
  • 2 total stops
  • 17h 55m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 10 March 2026.
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
Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/6

2:55 p.m.-8:46 p.m.

1 stop8h 51m

Seattle/Tacoma Intl

Sat 6/6

11:52 p.m.-10:06 a.m.

1 stop7h 14m

C$ 437

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/6

2:55 p.m.-8:46 p.m.

1 stop8h 51m

Seattle/Tacoma Intl

Sun 7/6

10:40 p.m.-10:06 a.m.

1 stop8h 26m

C$ 437

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/6

2:55 p.m.-8:46 p.m.

1 stop8h 51m

Seattle/Tacoma Intl

Tue 23/6

10:40 p.m.-10:06 a.m.

1 stop8h 26m

C$ 502

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 28/4

10:20 a.m.-10:53 p.m.

2 stops15h 33m

Seattle/Tacoma Intl

Wed 29/4

10:20 a.m.-6:22 p.m.

2 stops29h 02m

C$ 590

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 24/4

3:45 p.m.-10:05 p.m.

1 stop9h 20m

Seattle/Tacoma Intl

Fri 1/5

9:41 p.m.-1:00 p.m.

1 stop12h 19m

C$ 642

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 19/5

7:25 a.m.-8:53 p.m.

2 stops16h 28m

Seattle/Tacoma Intl

Thu 30/7

11:52 p.m.-10:06 a.m.

1 stop7h 14m

C$ 763

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 19/5

7:25 a.m.-8:53 p.m.

2 stops16h 28m

Seattle/Tacoma Intl

Wed 29/7

11:52 p.m.-4:41 p.m.

1 stop13h 49m

C$ 763
Cheapest one-way

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 30/5

6:55 p.m.-9:50 a.m.

2 stops17h 55m

C$ 239

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 29/5

6:55 p.m.-9:50 a.m.

2 stops17h 55m

C$ 250
Quickest one-way

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 1/6

2:55 p.m.-8:46 p.m.

1 stop8h 51m

C$ 263

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/3

Showing 1-10 of 17 resultsSorted by cheapest first
1
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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 United Airlines and Air Canada fly from Toronto Island Airport to Seattle in about 8h 51m. The time it takes to get you to your destination can typically vary by up to 6h 42m. Airlines will cover a distance of 3323 km. This flight may include one or multiple stops.

  • 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
Leavenworth
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
Kirkland

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