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Cheap flights from Seattle to Toronto from C$ 276

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Toronto departing on 1/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:23 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
15h 57m1 stop Baltimore/Washington
Multiple Airlines Logo
1:45 p.m. - 9:42 a.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
22h 57m2 stops Chicago Midway Las Vegas Harry Reid Intl
C$ 623Multiple Airlines
Tue, 1 Sep - Thu, 24 Sep
Multiple Airlines Logo
10:23 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
15h 57m1 stop Baltimore/Washington
Multiple Airlines Logo
1:45 p.m. - 9:42 a.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
46h 57m2 stops Chicago Midway Las Vegas Harry Reid Intl
C$ 623Multiple Airlines
Tue, 1 Sep - Tue, 22 Sep
Multiple Airlines Logo
10:23 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
15h 57m1 stop Baltimore/Washington
Multiple Airlines Logo
1:45 p.m. - 9:42 a.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
22h 57m2 stops Chicago Midway Las Vegas Harry Reid Intl
C$ 627Multiple Airlines
Tue, 1 Sep - Mon, 21 Sep
Multiple Airlines Logo
10:23 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
15h 57m1 stop Baltimore/Washington
Multiple Airlines Logo
1:45 p.m. - 9:42 a.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
22h 57m2 stops Chicago Midway Las Vegas Harry Reid Intl
C$ 627Multiple Airlines
Tue, 1 Sep - Mon, 14 Sep
Multiple Airlines Logo
8:48 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
17h 32m2 stops Las Vegas Harry Reid Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
10:10 a.m. - 6:25 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 15m1 stop Chicago Midway
C$ 631Multiple Airlines
Tue, 1 Sep - Tue, 15 Sep
Multiple Airlines Logo
8:48 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
17h 32m2 stops Las Vegas Harry Reid Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
10:10 a.m. - 6:47 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 37m1 stop Chicago Midway
C$ 631Multiple Airlines
Tue, 1 Sep - Sat, 12 Sep
Multiple Airlines Logo
4:27 p.m. - 12:55 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
41h 28m2 stops Denver Intl Washington, D.C. Reagan-National
Multiple Airlines Logo
1:40 p.m. - 9:57 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 17m1 stop Washington, D.C. Dulles Intl
C$ 641Multiple Airlines
Thu, 10 Sep - Thu, 17 Sep
Multiple Airlines Logo
8:48 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
17h 32m2 stops Las Vegas Harry Reid Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
1:40 p.m. - 9:57 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 17m1 stop Washington, D.C. Dulles Intl
C$ 645Multiple Airlines
Tue, 1 Sep - Thu, 10 Sep
Multiple Airlines Logo
8:48 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
17h 32m2 stops Las Vegas Harry Reid Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
1:40 p.m. - 9:57 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 17m1 stop Washington, D.C. Dulles Intl
C$ 645Multiple Airlines
Tue, 1 Sep - Thu, 17 Sep
Multiple Airlines Logo
8:48 p.m. - 5:20 p.m.SEA  Seattle/Tacoma Intl-YTZ Toronto Island
17h 32m2 stops Las Vegas Harry Reid Intl Washington, D.C. Dulles Intl
Multiple Airlines Logo
10:10 a.m. - 6:25 p.m.YTZ  Toronto Island-SEA Seattle/Tacoma Intl
11h 15m1 stop Chicago Midway
C$ 662Multiple Airlines
Tue, 1 Sep - Wed, 16 Sep

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momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Island Airport 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 12 August 2026.
Use the filters below to find and compare flights from Seattle to Toronto Island Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

10:23 p.m.-5:20 p.m.

1 stop15h 57m

Toronto Island

Thu 24/9

1:45 p.m.-9:42 a.m.

2 stops22h 57m

C$ 623

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

10:23 p.m.-5:20 p.m.

1 stop15h 57m

Toronto Island

Tue 22/9

1:45 p.m.-9:42 a.m.

2 stops46h 57m

C$ 623

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

10:23 p.m.-5:20 p.m.

1 stop15h 57m

Toronto Island

Mon 21/9

1:45 p.m.-9:42 a.m.

2 stops22h 57m

C$ 627

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

10:23 p.m.-5:20 p.m.

1 stop15h 57m

Toronto Island

Mon 14/9

1:45 p.m.-9:42 a.m.

2 stops22h 57m

C$ 627
Quickest round-trip

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

8:48 p.m.-5:20 p.m.

2 stops17h 32m

Toronto Island

Tue 15/9

10:10 a.m.-6:25 p.m.

1 stop11h 15m

C$ 631

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

8:48 p.m.-5:20 p.m.

2 stops17h 32m

Toronto Island

Sat 12/9

10:10 a.m.-6:47 p.m.

1 stop11h 37m

C$ 631

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Thu 10/9

4:27 p.m.-12:55 p.m.

2 stops41h 28m

Toronto Island

Thu 17/9

1:40 p.m.-9:57 p.m.

1 stop11h 17m

C$ 641

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

8:48 p.m.-5:20 p.m.

2 stops17h 32m

Toronto Island

Thu 10/9

1:40 p.m.-9:57 p.m.

1 stop11h 17m

C$ 645

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

8:48 p.m.-5:20 p.m.

2 stops17h 32m

Toronto Island

Thu 17/9

1:40 p.m.-9:57 p.m.

1 stop11h 17m

C$ 645

SeattleToronto

SEA Seattle/Tacoma Intl - YTZ Toronto Island

SEAYTZ

Seattle/Tacoma Intl

Tue 1/9

8:48 p.m.-5:20 p.m.

2 stops17h 32m

Toronto Island

Wed 16/9

10:10 a.m.-6:25 p.m.

1 stop11h 15m

C$ 662

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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When to book flights from Seattle to Toronto Island Airport

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

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

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

Fastest flight time

7h 45m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 45m
There are no direct flights from Seattle to Toronto Island Airport. There are no popular flight routes from Seattle to Toronto Island Airport.
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Frequently asked questions about flying from Seattle to Toronto Island Airport

  • How far is Seattle/Tacoma Intl to Toronto Island by plane?

    Toronto Island is 3323.2 km away from Seattle/Tacoma Intl. Flights usually cover this in 7h 45m, depending on flying conditions and air traffic around both airports.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Toronto Island Airport.

  • What documentation or ID do you need to fly to Toronto Island Airport?

    The travel and health documents required for your trip to Toronto Island Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Toronto Island Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Frequently asked questions about flying from Seattle to Toronto Island Airport

  • How do I get Price Alerts for flights from Seattle to Toronto Island Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Seattle from Toronto Island Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Seattle to Toronto Island Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Apsley

Why use momondo?

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

Finding the right flight to Toronto from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.

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

Flights from Seattle to Toronto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Toronto from Seattle.

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

If you are not ready to book a flight from Seattle to Toronto now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Toronto and let you know when they change.

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