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Cheap flights from Toronto Island Airport to Seattle from C$ 260

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 19/6. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
28 May — 4 Jun1
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 28 April 2026.

Thu 28/56:55 p.m.
YTZ
-
SEA
2 stops18h 10m
Air Canada
Sat 6/67:20 p.m.
SEA
-
YTZ
2 stops9h 27m
Air Canada
Deal found 27/4C$ 420
Sun 7/68:55 p.m.
YTZ
-
SEA
2 stops16h 10m
Air Canada
Sat 13/67:20 p.m.
SEA
-
YTZ
2 stops9h 27m
Air Canada
Deal found 24/4C$ 433
Mon 1/66:55 p.m.
YTZ
-
SEA
2 stops26h 35m
Air Canada
Sat 6/67:20 p.m.
SEA
-
YTZ
2 stops9h 27m
Air Canada
Deal found 24/4C$ 461
Wed 3/66:55 p.m.
YTZ
-
SEA
2 stops22h 25m
Air Canada
Mon 8/67:20 p.m.
SEA
-
YTZ
2 stops21h 32m
Air Canada
Deal found 24/4C$ 480
Sat 6/67:20 p.m.
YTZ
-
SEA
2 stops15h 40m
United Airlines
Mon 8/611:52 p.m.
SEA
-
YTZ
1 stop13h 49m
United Airlines
Deal found 23/4C$ 484
Fri 19/68:55 p.m.
YTZ
-
SEA
2 stops16h 12m
Air Canada
Mon 22/63:00 p.m.
SEA
-
YTZ
2 stops21h 51m
Air Canada
Deal found 27/4C$ 485
Wed 3/62:55 p.m.
YTZ
-
SEA
1 stop8h 51m
United Airlines
Mon 8/610:40 p.m.
SEA
-
YTZ
1 stop8h 26m
United Airlines
Deal found 27/4C$ 487
Mon 15/66:30 p.m.
YTZ
-
SEA
2 stops22h 50m
Air Canada
Fri 19/65:45 a.m.
SEA
-
YTZ
2 stops23h 00m
Air Canada
Deal found 24/4C$ 506
Mon 18/56:55 p.m.
YTZ
-
SEA
2 stops18h 10m
Air Canada
Fri 24/73:00 p.m.
SEA
-
YTZ
2 stops13h 45m
Air Canada
Deal found 27/4C$ 511
Fri 12/68:55 p.m.
YTZ
-
SEA
2 stops16h 10m
Air Canada
Wed 17/65:45 a.m.
SEA
-
YTZ
2 stops28h 30m
Air Canada
Deal found 24/4C$ 522
Sat 23/58:55 p.m.
YTZ
-
SEA
2 stops16h 10m
Air Canada
Sun 31/57:20 p.m.
SEA
-
YTZ
2 stops12h 37m
Air Canada
Deal found 24/4C$ 525

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 28 April 2026.

Round-trip from

C$ 420

One-way from

C$ 260

Popular in

June

Cheapest in

February

Average price

C$ 551
Air Canada
  • Air Canada
  • 28/5-6/6
  • 4 total stops
  • 27h 37m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 19/6
  • 2 total stops
  • 16h 12m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 47 potential increase over avg. RT price).
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 April 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 28 April 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

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 6/6

7:20 p.m.-8:00 a.m.

2 stops15h 40m

Seattle/Tacoma Intl

Fri 12/6

6:30 a.m.-10:06 a.m.

2 stops24h 36m

C$ 484

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/6

7:20 p.m.-9:40 a.m.

1 stop17h 20m

Seattle/Tacoma Intl

Fri 12/6

11:20 p.m.-6:42 p.m.

1 stop16h 22m

C$ 484

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 1/6

12:15 p.m.-7:06 p.m.

1 stop9h 51m

Seattle/Tacoma Intl

Fri 5/6

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

1 stop7h 14m

C$ 590

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 6/7

7:20 p.m.-8:00 a.m.

2 stops15h 40m

Seattle/Tacoma Intl

Sat 11/7

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

1 stop7h 14m

C$ 609

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 27/6

7:20 p.m.-7:55 a.m.

2 stops15h 35m

Seattle/Tacoma Intl

Thu 2/7

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

1 stop7h 14m

C$ 609
Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 23/9

12:15 p.m.-6:59 p.m.

1 stop9h 44m

Seattle/Tacoma Intl

Thu 1/10

7:00 a.m.-4:41 p.m.

1 stop6h 41m

C$ 616

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 11/9

12:15 p.m.-6:59 p.m.

1 stop9h 44m

Seattle/Tacoma Intl

Mon 21/9

10:47 p.m.-10:06 a.m.

1 stop8h 19m

C$ 616

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 15/9

12:15 p.m.-6:59 p.m.

1 stop9h 44m

Seattle/Tacoma Intl

Sat 19/9

3:33 p.m.-10:06 a.m.

2 stops15h 33m

C$ 616

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 29/6

7:20 p.m.-8:00 a.m.

2 stops15h 40m

Seattle/Tacoma Intl

Fri 3/7

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

1 stop7h 14m

C$ 620

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 2/9

12:15 p.m.-6:59 p.m.

1 stop9h 44m

Seattle/Tacoma Intl

Wed 16/9

8:10 a.m.-6:42 p.m.

1 stop7h 32m

C$ 639

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/4

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 fly from Toronto Island Airport to Seattle in about 15h 40m. 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
Leavenworth
Mukilteo
Kent
Tacoma
Bothell
Cashmere
Olympia
Renton
Marysville
Lynnwood
Kirkland
Tukwila

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