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Cheap flights from Toronto Island Airport to Seattle from C$ 290

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 18/8. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
22 Aug — 29 Aug1
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 23 July 2026.

Sat 12/93:35 p.m.
YTZ
-
SEA
2 stops10h 12m
Air Canada
Sat 19/97:15 p.m.
SEA
-
YTZ
2 stops12h 40m
Air Canada
Deal found 21/7C$ 599
Wed 16/93:35 p.m.
YTZ
-
SEA
2 stops10h 12m
Air Canada
Sat 19/97:15 p.m.
SEA
-
YTZ
2 stops12h 40m
Air Canada
Deal found 19/7C$ 609
Thu 3/93:35 p.m.
YTZ
-
SEA
2 stops10h 07m
Air Canada
Thu 10/95:50 a.m.
SEA
-
YTZ
2 stops12h 40m
Air Canada
Deal found 20/7C$ 619
Sat 22/812:30 p.m.
YTZ
-
SEA
2 stops13h 12m
Air Canada
Sat 29/810:40 a.m.
SEA
-
YTZ
2 stops19h 11m
Air Canada
Deal found 19/7C$ 633
Thu 20/812:30 p.m.
YTZ
-
SEA
2 stops13h 12m
Air Canada
Thu 27/85:50 a.m.
SEA
-
YTZ
2 stops12h 41m
Air Canada
Deal found 23/7C$ 638
Sat 5/94:30 p.m.
YTZ
-
SEA
2 stops20h 35m
Air Canada
Sat 12/95:50 a.m.
SEA
-
YTZ
2 stops9h 30m
Air Canada
Deal found 22/7C$ 640
Mon 14/910:20 a.m.
YTZ
-
SEA
2 stops15h 27m
Air Canada
Wed 16/95:50 a.m.
SEA
-
YTZ
2 stops9h 30m
Air Canada
Deal found 22/7C$ 681
Tue 11/812:30 p.m.
YTZ
-
SEA
2 stops13h 12m
Multiple Airlines
Wed 12/81:57 p.m.
SEA
-
YTZ
1 stop17h 21m
Multiple Airlines
Deal found 20/7C$ 684
Wed 16/910:10 a.m.
YTZ
-
SEA
1 stop11h 15m
Multiple Airlines
Fri 18/912:16 a.m.
SEA
-
YTZ
1 stop11h 09m
Multiple Airlines
Deal found 19/7C$ 689
Sun 30/89:15 a.m.
YTZ
-
SEA
2 stops27h 04m
Multiple Airlines
Tue 1/912:16 a.m.
SEA
-
YTZ
1 stop11h 09m
Multiple Airlines
Deal found 21/7C$ 692
Wed 23/910:10 a.m.
YTZ
-
SEA
1 stop11h 15m
Multiple Airlines
Mon 28/912:16 a.m.
SEA
-
YTZ
1 stop11h 09m
Multiple Airlines
Deal found 19/7C$ 699

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 23 July 2026.

Round-trip from

C$ 599

One-way from

C$ 290

Popular in

June

Cheapest in

February

Average price

C$ 561
Air Canada
  • Air Canada
  • 12/9-19/9
  • 4 total stops
  • 22h 52m total
  • Toronto to Seattle
Search Deals
18/8
  • 18/8
  • 2 total stops
  • 47h 59m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 23 July 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 12/9

7:35 p.m.-9:36 a.m.

1 stop17h 01m

Seattle/Tacoma Intl

Sat 19/9

3:30 p.m.-10:07 a.m.

2 stops15h 37m

C$ 713

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 3/10

12:15 p.m.-9:15 p.m.

2 stops12h 00m

Seattle/Tacoma Intl

Sat 10/10

11:13 p.m.-10:07 a.m.

1 stop7h 54m

C$ 720

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 12/9

12:15 p.m.-7:14 p.m.

1 stop9h 59m

Seattle/Tacoma Intl

Sun 20/9

11:00 p.m.-10:07 a.m.

1 stop8h 07m

C$ 723

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 14/9

7:25 p.m.-4:14 p.m.

2 stops23h 49m

Seattle/Tacoma Intl

Wed 16/9

8:10 a.m.-6:46 p.m.

1 stop7h 36m

C$ 724

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 17/9

12:15 p.m.-7:14 p.m.

1 stop9h 59m

Seattle/Tacoma Intl

Thu 17/9

11:00 p.m.-10:07 a.m.

1 stop8h 07m

C$ 727
Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 29/8

12:15 p.m.-7:07 p.m.

1 stop9h 52m

Seattle/Tacoma Intl

Wed 7/10

8:10 a.m.-6:46 p.m.

1 stop7h 36m

C$ 727

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 25/9

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

1 stop9h 37m

Seattle/Tacoma Intl

Wed 30/9

11:13 p.m.-10:07 a.m.

1 stop7h 54m

C$ 731
Cheapest one-way

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 26/9

10:50 a.m.-9:51 a.m.

2 stops26h 01m

C$ 330

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 29/9

12:15 p.m.-11:26 p.m.

2 stops14h 11m

C$ 392
Quickest one-way

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 26/10

10:10 a.m.-3:43 p.m.

1 stop8h 33m

C$ 392

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/7

Showing 1-10 of 18 resultsSorted by cheapest first
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 United Airlines fly from Toronto Island Airport to Seattle in about 17h 01m. 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
Leavenworth
Mukilteo
Tacoma
Renton
Cashmere
Lynnwood
Ellensburg
Tukwila
Olympia
Marysville
Federal Way
Kirkland

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