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Cheap flights from Toronto Island Airport to Seattle from C$ 246

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto Island Airport to Seattle departing on 15/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Toronto Island Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
8:30 p.m. - 2:31 p.m.YTZ-SEA
21h 01m2 stops
Air Canada Logo
8:00 p.m. - 11:42 a.m.SEA-YTZ
12h 42m2 stops
C$ 436Air Canada
Find Deal
Mon, 8 Dec - Tue, 9 Dec
Multiple Airlines Logo
7:00 a.m. - 7:16 p.m.YTZ-SEA
15h 16m2 stops
Multiple Airlines Logo
8:00 p.m. - 4:43 p.m.SEA-YTZ
17h 43m2 stops
C$ 535Multiple Airlines
Find Deal
Sat, 22 Nov - Sat, 29 Nov
Multiple Airlines Logo
7:40 p.m. - 10:40 a.m.YTZ-SEA
18h 00m1 stop
Multiple Airlines Logo
11:10 p.m. - 4:48 p.m.SEA-YTZ
14h 38m2 stops
C$ 593Multiple Airlines
Find Deal
Thu, 4 Dec - Sun, 7 Dec
Multiple Airlines Logo
7:00 a.m. - 6:48 p.m.YTZ-SEA
14h 48m2 stops
Multiple Airlines Logo
8:44 a.m. - 7:50 p.m.SEA-YTZ
8h 06m1 stop
C$ 634Multiple Airlines
Find Deal
Mon, 8 Dec - Tue, 9 Dec
Multiple Airlines Logo
7:00 a.m. - 10:22 a.m.YTZ-SEA
30h 22m3 stops
Multiple Airlines Logo
3:10 p.m. - 5:43 p.m.SEA-YTZ
23h 33m3 stops
C$ 638Multiple Airlines
Find Deal
Thu, 4 Dec - Sun, 7 Dec
Multiple Airlines Logo
2:05 p.m. - 11:19 p.m.YTZ-SEA
12h 14m2 stops
Multiple Airlines Logo
10:00 a.m. - 9:15 p.m.SEA-YTZ
8h 15m1 stop
C$ 658Multiple Airlines
Find Deal
Wed, 3 Dec - Wed, 10 Dec
Multiple Airlines Logo
1:30 p.m. - 8:51 p.m.YTZ-SEA
10h 21m1 stop
Multiple Airlines Logo
9:35 p.m. - 10:35 a.m.SEA-YTZ
10h 00m1 stop
C$ 674Multiple Airlines
Find Deal
Thu, 4 Dec - Sun, 7 Dec
Air Canada Logo
10:30 a.m. - 9:31 a.m.YTZ-SEA
26h 01m2 stops
Air Canada Logo
8:00 p.m. - 6:13 p.m.SEA-YTZ
19h 13m2 stops
C$ 680Air Canada
Find Deal
Thu, 13 Nov - Wed, 19 Nov
Multiple Airlines Logo
7:00 a.m. - 4:46 p.m.YTZ-SEA
12h 46m2 stops
Multiple Airlines Logo
9:35 p.m. - 10:35 a.m.SEA-YTZ
10h 00m1 stop
C$ 687Multiple Airlines
Find Deal
Thu, 27 Nov - Thu, 4 Dec
Multiple Airlines Logo
7:45 a.m. - 8:51 p.m.YTZ-SEA
16h 06m1 stop
Multiple Airlines Logo
9:35 p.m. - 10:35 a.m.SEA-YTZ
10h 00m1 stop
C$ 709Multiple Airlines
Find Deal
Sat, 6 Dec - Sat, 13 Dec

Air Canada flights from Toronto Island Airport to Seattle

Our best Air Canada deals on Toronto Island Airport to Seattle flight tickets
Air Canada
8 Dec
YTZ8:30 p.m.Toronto Island
21h 01m
2 stops
SEA2:31 p.m.Seattle/Tacoma Intl
9 Dec
SEA8:00 p.m.Seattle/Tacoma Intl
12h 42m
2 stops
YTZ11:42 a.m.Toronto Island
C$ 436
Find similar
Air Canada
13 Nov
YTZ10:30 a.m.Toronto Island
26h 01m
2 stops
SEA9:31 a.m.Seattle/Tacoma Intl
19 Nov
SEA8:00 p.m.Seattle/Tacoma Intl
19h 13m
2 stops
YTZ6:13 p.m.Toronto Island
C$ 680
Find similar
Air Canada
14 Nov
YTZ8:30 p.m.Toronto Island
21h 01m
2 stops
SEA2:31 p.m.Seattle/Tacoma Intl
20 Nov
SEA8:00 p.m.Seattle/Tacoma Intl
19h 13m
2 stops
YTZ6:13 p.m.Toronto Island
C$ 814
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Toronto Island Airport 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, momondo users made 96,600 searches. Data last updated 30 October 2025.
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

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 8/12

8:30 p.m.-2:31 p.m.

2 stops21h 01m

Seattle/Tacoma Intl

Tue 9/12

8:00 p.m.-11:42 a.m.

2 stops12h 42m

C$ 436

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 22/11

7:00 a.m.-7:16 p.m.

2 stops15h 16m

Seattle/Tacoma Intl

Sat 29/11

8:00 p.m.-4:43 p.m.

2 stops17h 43m

C$ 535

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/12

7:40 p.m.-10:40 a.m.

1 stop18h 00m

Seattle/Tacoma Intl

Sun 7/12

11:10 p.m.-4:48 p.m.

2 stops14h 38m

C$ 593

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 8/12

7:00 a.m.-6:48 p.m.

2 stops14h 48m

Seattle/Tacoma Intl

Tue 9/12

8:44 a.m.-7:50 p.m.

1 stop8h 06m

C$ 634

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/12

7:00 a.m.-10:22 a.m.

3 stops30h 22m

Seattle/Tacoma Intl

Sun 7/12

3:10 p.m.-5:43 p.m.

3 stops23h 33m

C$ 638

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 3/12

2:05 p.m.-11:19 p.m.

2 stops12h 14m

Seattle/Tacoma Intl

Wed 10/12

10:00 a.m.-9:15 p.m.

1 stop8h 15m

C$ 658

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 4/12

1:30 p.m.-8:51 p.m.

1 stop10h 21m

Seattle/Tacoma Intl

Sun 7/12

9:35 p.m.-10:35 a.m.

1 stop10h 00m

C$ 674

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 13/11

10:30 a.m.-9:31 a.m.

2 stops26h 01m

Seattle/Tacoma Intl

Wed 19/11

8:00 p.m.-6:13 p.m.

2 stops19h 13m

C$ 680

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 27/11

7:00 a.m.-4:46 p.m.

2 stops12h 46m

Seattle/Tacoma Intl

Thu 4/12

9:35 p.m.-10:35 a.m.

1 stop10h 00m

C$ 687

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 6/12

7:45 a.m.-8:51 p.m.

1 stop16h 06m

Seattle/Tacoma Intl

Sat 13/12

9:35 p.m.-10:35 a.m.

1 stop10h 00m

C$ 709

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Seattle from

How to get the cheapest flight ticket from Toronto Island Airport to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Seattle?

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 559. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 789. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

What is the cheapest time of day to depart on your flight to Seattle?

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto Island Airport to Seattle during this time can be as low as C$ 428. Flights in the morning are often more expensive with an average ticket price of C$ 844.

Can stopping save me money on Toronto Island Airport to Seattle flights?

You could potentially save up to 60% on your flight if you consider stops on a Toronto Island Airport to Seattle flight.

When to book flights from Toronto Island Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Toronto Island Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Toronto Island Airport to Seattle (YTZ to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Toronto Island Airport to Seattle

Direct flights

None
There are no direct flights from Toronto Island Airport to Seattle. There are no popular flight routes from Toronto Island Airport to Seattle.
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  • How far is Toronto Island to Seattle/Tacoma Intl by plane?

    The straight-line distance from Toronto Island to Seattle/Tacoma Intl is 3323.2 km. Flights usually cover this in 9h 18m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Toronto Island Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Toronto Island Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How old do you have to be to fly from Toronto Island Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Toronto Island Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Lynnwood
Marysville
Tacoma
SeaTac
Kirkland
Olympia
Ocean Shores
Redmond
Shoreline
Ellensburg
Gig Harbor
Renton
Mukilteo
Cle Elum
Centralia
Federal Way
Puyallup
Shelton
Lakewood

Why use momondo?

Why should I use momondo to find a flight deal from Toronto to Seattle?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Toronto to Seattle. momondo saves you time and could save you money on your trip.

Can I find flights from Toronto to Seattle with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seattle from Toronto with this policy.

How can momondo help me find flights from Toronto to Seattle?

Once all potential Toronto to Seattle flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Toronto to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Toronto and alert you when they change.

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