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Cheap flights from Seattle to Toronto from $111

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 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
8:00 pm - 9:55 amSEA-YTZ
10h 55m2 stops
Air Canada Logo
6:30 pm - 2:31 pmYTZ-SEA
23h 01m2 stops
$298Air Canada
Find Deal
Sat, Jan 3 - Sat, Jan 10
Air Canada Logo
8:00 pm - 9:42 amSEA-YTZ
10h 42m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$320Air Canada
Find Deal
Thu, Feb 5 - Mon, Feb 9
Air Canada Logo
8:00 pm - 11:42 amSEA-YTZ
12h 42m2 stops
Air Canada Logo
8:30 pm - 3:01 pmYTZ-SEA
21h 31m2 stops
$333Air Canada
Find Deal
Mon, Mar 9 - Sun, Mar 15
Air Canada Logo
8:00 pm - 9:42 amSEA-YTZ
10h 42m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$341Air Canada
Find Deal
Mon, Dec 8 - Tue, Jan 6
Air Canada Logo
8:00 pm - 2:55 pmSEA-YTZ
15h 55m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$345Air Canada
Find Deal
Sat, Dec 27 - Wed, Jan 7
Air Canada Logo
8:00 pm - 5:55 pmSEA-YTZ
18h 55m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$350Air Canada
Find Deal
Wed, Dec 24 - Tue, Jan 6
Air Canada Logo
8:00 pm - 7:55 pmSEA-YTZ
20h 55m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$360Air Canada
Find Deal
Thu, Dec 25 - Tue, Jan 6
Multiple Airlines Logo
8:00 pm - 2:55 pmSEA-YTZ
15h 55m2 stops
Multiple Airlines Logo
3:15 pm - 9:31 amYTZ-SEA
21h 16m2 stops
$391Multiple Airlines
Find Deal
Sat, Dec 27 - Thu, Jan 8
Multiple Airlines Logo
8:44 am - 9:15 pmSEA-YTZ
9h 31m1 stop
Multiple Airlines Logo
7:00 am - 6:48 pmYTZ-SEA
14h 48m2 stops
$392Multiple Airlines
Find Deal
Tue, Dec 9 - Thu, Dec 11
Multiple Airlines Logo
11:18 am - 10:03 pmSEA-YTZ
31h 45m2 stops
Multiple Airlines Logo
12:30 pm - 9:28 pmYTZ-SEA
11h 58m1 stop
$436Multiple Airlines
Find Deal
Sat, Jan 10 - Sat, Jan 17

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Jan 3
SEA8:00 pmSeattle/Tacoma Intl
10h 55m
2 stops
YTZ9:55 amToronto Island
Jan 10
YTZ6:30 pmToronto Island
23h 01m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$298
Find similar
Air Canada
Feb 5
SEA8:00 pmSeattle/Tacoma Intl
10h 42m
2 stops
YTZ9:42 amToronto Island
Feb 9
YTZ8:30 pmToronto Island
21h 01m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$320
Find similar
Air Canada
Mar 9
SEA8:00 pmSeattle/Tacoma Intl
12h 42m
2 stops
YTZ11:42 amToronto Island
Mar 15
YTZ8:30 pmToronto Island
21h 31m
2 stops
SEA3:01 pmSeattle/Tacoma Intl
$333
Find similar

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 832,500 searches. Data last updated November 20, 2025.
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

Sat 1/3

8:00 pm-9:55 am

2 stops10h 55m

Toronto Island

Sat 1/10

6:30 pm-2:31 pm

2 stops23h 01m

$298

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 2/5

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Mon 2/9

8:30 pm-2:31 pm

2 stops21h 01m

$320

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 3/9

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Sun 3/15

8:30 pm-3:01 pm

2 stops21h 31m

$333

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 12/8

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Tue 1/6

8:30 pm-2:31 pm

2 stops21h 01m

$341

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 12/27

8:00 pm-2:55 pm

2 stops15h 55m

Toronto Island

Wed 1/7

8:30 pm-2:31 pm

2 stops21h 01m

$345

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/24

8:00 pm-5:55 pm

2 stops18h 55m

Toronto Island

Tue 1/6

8:30 pm-2:31 pm

2 stops21h 01m

$350

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 12/25

8:00 pm-7:55 pm

2 stops20h 55m

Toronto Island

Tue 1/6

8:30 pm-2:31 pm

2 stops21h 01m

$360

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 12/27

8:00 pm-2:55 pm

2 stops15h 55m

Toronto Island

Thu 1/8

3:15 pm-9:31 am

2 stops21h 16m

$391

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 12/9

8:44 am-9:15 pm

1 stop9h 31m

Toronto Island

Thu 12/11

7:00 am-6:48 pm

2 stops14h 48m

$392

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/10

11:18 am-10:03 pm

2 stops31h 45m

Toronto Island

Sat 1/17

12:30 pm-9:28 pm

1 stop11h 58m

$436

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

Direct flights

None
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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  • How far is Seattle/Tacoma Intl to Toronto Island by plane?

    A flight from Seattle/Tacoma Intl to Toronto Island will travel around 2064.9 mi. In terms of flight time, this usually takes a little over 8h 06m.

  • 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?

    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 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 you'll need for your trip to Toronto Island 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 Toronto Island Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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 recognisable 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?

All flight searches from Seattle to Toronto on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Toronto from Seattle. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Price alerts on flights to Toronto from Seattle are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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