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Cheap flights from Seattle to Toronto from $133

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 9/12. 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 Seattle to Toronto (SEA-YTZ)

Cheap round-trip flights

Air Canada Logo
7:15 am - 9:34 pmSEA-YTZ
11h 19m1 stop
Air Canada Logo
12:25 pm - 7:31 pmYTZ-SEA
10h 06m1 stop
$262Air Canada
Find Deal
Thu, Sep 25 - Wed, Oct 1
Air Canada Logo
5:30 am - 6:46 pmSEA-YTZ
10h 16m2 stops
Air Canada Logo
4:10 pm - 10:26 pmYTZ-SEA
9h 16m2 stops
$274Air Canada
Find Deal
Wed, Oct 8 - Wed, Oct 15
Air Canada Logo
7:15 am - 7:49 pmSEA-YTZ
9h 34m1 stop
Air Canada Logo
4:10 pm - 10:26 pmYTZ-SEA
9h 16m2 stops
$281Air Canada
Find Deal
Wed, Oct 8 - Wed, Oct 15
Air Canada Logo
7:15 am - 9:34 pmSEA-YTZ
11h 19m1 stop
Air Canada Logo
12:25 pm - 7:31 pmYTZ-SEA
10h 06m1 stop
$287Air Canada
Find Deal
Sat, Sep 20 - Wed, Sep 24
Air Canada Logo
5:30 am - 6:46 pmSEA-YTZ
10h 16m2 stops
Air Canada Logo
7:20 pm - 2:26 pmYTZ-SEA
22h 06m2 stops
$293Air Canada
Find Deal
Wed, Oct 22 - Mon, Oct 27
Air Canada Logo
7:15 am - 9:34 pmSEA-YTZ
11h 19m1 stop
Air Canada Logo
12:25 pm - 7:31 pmYTZ-SEA
10h 06m1 stop
$295Air Canada
Find Deal
Thu, Oct 2 - Sat, Oct 4
Air Canada Logo
7:15 am - 9:34 pmSEA-YTZ
11h 19m1 stop
Air Canada Logo
12:25 pm - 7:31 pmYTZ-SEA
10h 06m1 stop
$312Air Canada
Find Deal
Thu, Sep 25 - Wed, Oct 1
Air Canada Logo
7:15 am - 7:49 pmSEA-YTZ
9h 34m1 stop
Air Canada Logo
12:25 pm - 7:31 pmYTZ-SEA
10h 06m1 stop
$313Air Canada
Find Deal
Mon, Oct 6 - Mon, Oct 13
Logo
5:55 pm - 12:17 pmSEA-YTZ
15h 22m1 stop
Logo
5:30 pm - 6:12 pmYTZ-SEA
27h 42m2 stops
$332
Find Deal
Fri, Sep 5 - Wed, Sep 17
Logo
5:30 am - 8:41 pmSEA-YTZ
12h 11m2 stops
Logo
3:35 pm - 12:59 pmYTZ-SEA
24h 24m3 stops
$371
Find Deal
Wed, Oct 8 - Wed, Oct 15

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Sep 25
SEA7:15 amSeattle/Tacoma Intl
11h 19m
1 stop
YTZ9:34 pmToronto Island
Oct 1
YTZ12:25 pmToronto Island
10h 06m
1 stop
SEA7:31 pmSeattle/Tacoma Intl
$262
Find similar
Air Canada
Oct 8
SEA5:30 amSeattle/Tacoma Intl
10h 16m
2 stops
YTZ6:46 pmToronto Island
Oct 15
YTZ4:10 pmToronto Island
9h 16m
2 stops
SEA10:26 pmSeattle/Tacoma Intl
$274
Find similar
Air Canada
Oct 8
SEA7:15 amSeattle/Tacoma Intl
9h 34m
1 stop
YTZ7:49 pmToronto Island
Oct 15
YTZ4:10 pmToronto Island
9h 16m
2 stops
SEA10:26 pmSeattle/Tacoma Intl
$281
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 August 24, 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

Thu 9/25

7:15 am-9:34 pm

1 stop11h 19m

Toronto Island

Wed 10/1

12:25 pm-7:31 pm

1 stop10h 06m

$262

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 10/8

5:30 am-6:46 pm

2 stops10h 16m

Toronto Island

Wed 10/15

4:10 pm-10:26 pm

2 stops9h 16m

$274

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 10/8

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Wed 10/15

4:10 pm-10:26 pm

2 stops9h 16m

$281

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 9/20

7:15 am-9:34 pm

1 stop11h 19m

Toronto Island

Wed 9/24

12:25 pm-7:31 pm

1 stop10h 06m

$287

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 10/22

5:30 am-6:46 pm

2 stops10h 16m

Toronto Island

Mon 10/27

7:20 pm-2:26 pm

2 stops22h 06m

$293

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 10/2

7:15 am-9:34 pm

1 stop11h 19m

Toronto Island

Sat 10/4

12:25 pm-7:31 pm

1 stop10h 06m

$295

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 9/25

7:15 am-9:34 pm

1 stop11h 19m

Toronto Island

Wed 10/1

12:25 pm-7:31 pm

1 stop10h 06m

$312

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 10/6

7:15 am-7:49 pm

1 stop9h 34m

Toronto Island

Mon 10/13

12:25 pm-7:31 pm

1 stop10h 06m

$313

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 9/5

5:55 pm-12:17 pm

1 stop15h 22m

Toronto Island

Wed 9/17

5:30 pm-6:12 pm

2 stops27h 42m

$332

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 10/8

5:30 am-8:41 pm

2 stops12h 11m

Toronto Island

Wed 10/15

3:35 pm-12:59 pm

3 stops24h 24m

$371

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 20m.

  • 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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