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Cheap flights from Seattle to Toronto from C$ 135

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 5/5. 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

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Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:15 a.m. - 7:52 p.m.
SEA
-
YTZ
9h 37m
1 stop
Air Canada Logo
12:30 p.m. - 7:37 p.m.
YTZ
-
SEA
10h 07m
1 stop
C$ 372Air Canada
Tue, 12 May - Sun, 17 May
Air Canada Logo
7:15 a.m. - 7:52 p.m.
SEA
-
YTZ
9h 37m
1 stop
Air Canada Logo
12:30 p.m. - 7:37 p.m.
YTZ
-
SEA
10h 07m
1 stop
C$ 426Air Canada
Sun, 17 May - Sun, 31 May
Air Canada Logo
7:30 a.m. - 7:51 p.m.
SEA
-
YTZ
9h 21m
1 stop
Air Canada Logo
12:30 p.m. - 7:46 p.m.
YTZ
-
SEA
10h 16m
1 stop
C$ 568Air Canada
Sun, 12 Jul - Mon, 27 Jul
Air Canada Logo
7:15 a.m. - 7:52 p.m.
SEA
-
YTZ
9h 37m
1 stop
Air Canada Logo
12:30 p.m. - 7:37 p.m.
YTZ
-
SEA
10h 07m
1 stop
C$ 570Air Canada
Mon, 4 May - Sat, 9 May
Air Canada Logo
5:40 a.m. - 6:17 p.m.
SEA
-
YTZ
9h 37m
2 stops
Air Canada Logo
12:30 p.m. - 7:46 p.m.
YTZ
-
SEA
10h 16m
1 stop
C$ 596Air Canada
Wed, 8 Apr - Wed, 15 Jul
Air Canada Logo
5:40 a.m. - 6:17 p.m.
SEA
-
YTZ
9h 37m
2 stops
Air Canada Logo
3:35 p.m. - 10:22 p.m.
YTZ
-
SEA
9h 47m
2 stops
C$ 598Air Canada
Wed, 8 Apr - Sat, 18 Jul
Air Canada Logo
7:15 a.m. - 7:52 p.m.
SEA
-
YTZ
9h 37m
1 stop
Air Canada Logo
12:30 p.m. - 7:37 p.m.
YTZ
-
SEA
10h 07m
1 stop
C$ 608Air Canada
Sun, 17 May - Mon, 1 Jun
Air Canada Logo
7:15 a.m. - 9:32 p.m.
SEA
-
YTZ
11h 17m
1 stop
Air Canada Logo
12:30 p.m. - 7:37 p.m.
YTZ
-
SEA
10h 07m
1 stop
C$ 612Air Canada
Sat, 2 May - Sun, 10 May
Multiple Airlines Logo
7:35 p.m. - 4:33 p.m.
SEA
-
YTZ
17h 58m
2 stops
Multiple Airlines Logo
11:55 a.m. - 6:45 p.m.
YTZ
-
SEA
9h 50m
2 stops
C$ 627Multiple Airlines
Fri, 22 May - Tue, 26 May
Air Canada Logo
7:15 a.m. - 7:52 p.m.
SEA
-
YTZ
9h 37m
1 stop
Air Canada Logo
12:30 p.m. - 7:46 p.m.
YTZ
-
SEA
10h 16m
1 stop
C$ 630Air Canada
Thu, 4 Jun - Mon, 22 Jun

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
12 May
SEA7:15 a.m.Seattle/Tacoma Intl
9h 37m
1 stop
YTZ7:52 p.m.Toronto Island
17 May
YTZ12:30 p.m.Toronto Island
10h 07m
1 stop
SEA7:37 p.m.Seattle/Tacoma Intl
C$ 372
Air Canada
17 May
SEA7:15 a.m.Seattle/Tacoma Intl
9h 37m
1 stop
YTZ7:52 p.m.Toronto Island
31 May
YTZ12:30 p.m.Toronto Island
10h 07m
1 stop
SEA7:37 p.m.Seattle/Tacoma Intl
C$ 426
Air Canada
18 Mar
SEA10:10 a.m.Seattle/Tacoma Intl
19h 45m
2 stops
YTZ8:55 a.m.Toronto Island
25 Mar
YTZ8:50 a.m.Toronto Island
17h 07m
2 stops
SEA10:57 p.m.Seattle/Tacoma Intl
C$ 522

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 3 February 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

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 12/5

7:15 a.m.-7:52 p.m.

1 stop9h 37m

Toronto Island

Sun 17/5

12:30 p.m.-7:37 p.m.

1 stop10h 07m

C$ 372

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 17/5

7:15 a.m.-7:52 p.m.

1 stop9h 37m

Toronto Island

Sun 31/5

12:30 p.m.-7:37 p.m.

1 stop10h 07m

C$ 426

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 12/7

7:30 a.m.-7:51 p.m.

1 stop9h 21m

Toronto Island

Mon 27/7

12:30 p.m.-7:46 p.m.

1 stop10h 16m

C$ 568

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 4/5

7:15 a.m.-7:52 p.m.

1 stop9h 37m

Toronto Island

Sat 9/5

12:30 p.m.-7:37 p.m.

1 stop10h 07m

C$ 570

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 8/4

5:40 a.m.-6:17 p.m.

2 stops9h 37m

Toronto Island

Wed 15/7

12:30 p.m.-7:46 p.m.

1 stop10h 16m

C$ 596

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 8/4

5:40 a.m.-6:17 p.m.

2 stops9h 37m

Toronto Island

Sat 18/7

3:35 p.m.-10:22 p.m.

2 stops9h 47m

C$ 598

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 17/5

7:15 a.m.-7:52 p.m.

1 stop9h 37m

Toronto Island

Mon 1/6

12:30 p.m.-7:37 p.m.

1 stop10h 07m

C$ 608

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 2/5

7:15 a.m.-9:32 p.m.

1 stop11h 17m

Toronto Island

Sun 10/5

12:30 p.m.-7:37 p.m.

1 stop10h 07m

C$ 612

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 22/5

7:35 p.m.-4:33 p.m.

2 stops17h 58m

Toronto Island

Tue 26/5

11:55 a.m.-6:45 p.m.

2 stops9h 50m

C$ 627

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 4/6

7:15 a.m.-7:52 p.m.

1 stop9h 37m

Toronto Island

Mon 22/6

12:30 p.m.-7:46 p.m.

1 stop10h 16m

C$ 630

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Toronto from

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

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 airline that flies from Seattle/Tacoma Intl to Toronto Island?

Air Canada is the most popular carrier operating from Seattle/Tacoma Intl to Toronto Island

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 16m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 16m
There are no direct flights from Seattle to Toronto Island Airport. There are no popular flight routes from Seattle to Toronto Island Airport.
Search flight deals

  • 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 16m, 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.

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.

An easier way to manage your Toronto Island Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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