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Cheap flights from Toronto Island Airport to Seattle from C$ 306

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
YTZ — SEA
12 Jul — 19 Jul1
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 June 2026.

Sat 12/93:35 p.m.
YTZ
-
SEA
2 stops10h 07m
Air Canada
Sat 26/97:20 p.m.
SEA
-
YTZ
2 stops9h 25m
Air Canada
Deal found 9/6C$ 513
Wed 23/97:20 p.m.
YTZ
-
SEA
1 stop17h 16m
United Airlines
Sun 27/95:21 p.m.
SEA
-
YTZ
2 stops13h 45m
United Airlines
Deal found 8/6C$ 521
Thu 1/102:55 p.m.
YTZ
-
SEA
1 stop8h 42m
United Airlines
Mon 5/105:12 p.m.
SEA
-
YTZ
1 stop13h 54m
United Airlines
Deal found 9/6C$ 524
Fri 10/78:55 p.m.
YTZ
-
SEA
2 stops16h 12m
Air Canada
Sat 11/77:20 p.m.
SEA
-
YTZ
2 stops20h 00m
Air Canada
Deal found 10/6C$ 630
Wed 23/91:40 p.m.
YTZ
-
SEA
1 stop10h 58m
Multiple Airlines
Wed 30/95:51 p.m.
SEA
-
YTZ
1 stop12h 49m
Multiple Airlines
Deal found 9/6C$ 636
Fri 14/87:25 p.m.
YTZ
-
SEA
1 stop17h 11m
United Airlines
Mon 24/811:00 p.m.
SEA
-
YTZ
1 stop8h 06m
United Airlines
Deal found 10/6C$ 647
Tue 15/910:05 a.m.
YTZ
-
SEA
1 stop14h 33m
Multiple Airlines
Thu 24/96:00 a.m.
SEA
-
YTZ
1 stop9h 00m
Multiple Airlines
Deal found 9/6C$ 651
Fri 10/78:55 p.m.
YTZ
-
SEA
2 stops16h 12m
Air Canada
Sun 12/710:45 a.m.
SEA
-
YTZ
2 stops28h 35m
Air Canada
Deal found 10/6C$ 656
Tue 15/91:40 p.m.
YTZ
-
SEA
1 stop10h 58m
Multiple Airlines
Sat 19/96:00 a.m.
SEA
-
YTZ
1 stop9h 00m
Multiple Airlines
Deal found 10/6C$ 669

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 June 2026.

Round-trip from

C$ 513

One-way from

C$ 306

Popular in

June

Cheapest in

February

Average price

C$ 659
Air Canada
  • Air Canada
  • 12/9-26/9
  • 4 total stops
  • 19h 32m total
  • Toronto to Seattle
Search Deals
United Airlines
  • United Airlines
  • 26/8
  • 1 total stop
  • 17h 16m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 14% 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 June 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 12 June 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

Wed 23/9

7:20 p.m.-9:36 a.m.

1 stop17h 16m

Seattle/Tacoma Intl

Sun 27/9

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

1 stop7h 32m

C$ 521
Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 7/10

2:55 p.m.-8:37 p.m.

1 stop8h 42m

Seattle/Tacoma Intl

Wed 14/10

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

1 stop7h 32m

C$ 626

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 16/7

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

1 stop9h 51m

Seattle/Tacoma Intl

Wed 22/7

5:15 p.m.-10:06 a.m.

1 stop13h 51m

C$ 647

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 28/8

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

1 stop9h 52m

Seattle/Tacoma Intl

Fri 28/8

11:00 p.m.-10:06 a.m.

1 stop8h 06m

C$ 703

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 26/10

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

1 stop9h 44m

Seattle/Tacoma Intl

Mon 26/10

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

1 stop8h 26m

C$ 729

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 11/7

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

1 stop9h 51m

Seattle/Tacoma Intl

Tue 14/7

5:15 p.m.-10:07 a.m.

1 stop13h 52m

C$ 747

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 15/8

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

1 stop9h 52m

Seattle/Tacoma Intl

Sat 22/8

11:00 p.m.-10:06 a.m.

1 stop8h 06m

C$ 749

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 25/6

3:15 p.m.-8:00 a.m.

2 stops19h 45m

Seattle/Tacoma Intl

Fri 3/7

5:15 p.m.-10:07 a.m.

1 stop13h 52m

C$ 753

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 26/10

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

1 stop9h 44m

Seattle/Tacoma Intl

Sat 31/10

8:00 a.m.-6:45 p.m.

1 stop7h 45m

C$ 770

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 11/8

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

1 stop9h 52m

Seattle/Tacoma Intl

Tue 18/8

11:00 p.m.-10:06 a.m.

1 stop8h 06m

C$ 770

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/6

Showing 1-10 of 20 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 16m. 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
Tukwila
Olympia
Marysville
Kirkland

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