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Cheap flights from Seattle to Toronto from $184

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 8/25. 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
9:35 pm - 12:55 pm
SEA
-
YTZ
12h 20m
1 stop
Multiple Airlines Logo
9:15 am - 8:34 pm
YTZ
-
SEA
14h 19m
1 stop
$484Multiple Airlines
Tue, Aug 25 - Tue, Sep 1
Multiple Airlines Logo
5:51 pm - 1:05 pm
SEA
-
YTZ
16h 14m
1 stop
Multiple Airlines Logo
1:40 pm - 9:57 pm
YTZ
-
SEA
11h 17m
1 stop
$517Multiple Airlines
Wed, Aug 19 - Sat, Aug 22
Multiple Airlines Logo
9:35 pm - 12:55 pm
SEA
-
YTZ
12h 20m
1 stop
Multiple Airlines Logo
1:40 pm - 8:44 pm
YTZ
-
SEA
10h 04m
1 stop
$532Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Air Canada Logo
5:40 am - 9:30 pm
SEA
-
YTZ
12h 50m
2 stops
Air Canada Logo
10:45 am - 10:42 pm
YTZ
-
SEA
14h 57m
2 stops
$534Air Canada
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
3:29 pm - 8:47 am
SEA
-
YTZ
14h 18m
1 stop
Multiple Airlines Logo
1:35 pm - 8:01 pm
YTZ
-
SEA
9h 26m
1 stop
$539Multiple Airlines
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
9:35 pm - 12:55 pm
SEA
-
YTZ
12h 20m
1 stop
Multiple Airlines Logo
1:40 pm - 8:34 pm
YTZ
-
SEA
9h 54m
1 stop
$542Multiple Airlines
Tue, Aug 25 - Sat, Aug 29
Multiple Airlines Logo
3:29 pm - 8:47 am
SEA
-
YTZ
14h 18m
1 stop
Multiple Airlines Logo
8:50 am - 8:01 pm
YTZ
-
SEA
14h 11m
1 stop
$544Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Multiple Airlines Logo
6:51 pm - 12:57 pm
SEA
-
YTZ
15h 06m
2 stops
Multiple Airlines Logo
3:05 pm - 11:12 pm
YTZ
-
SEA
11h 07m
1 stop
$550Multiple Airlines
Wed, Sep 16 - Wed, Sep 30
Multiple Airlines Logo
3:29 pm - 8:57 am
SEA
-
YTZ
14h 28m
1 stop
Multiple Airlines Logo
3:05 pm - 11:12 pm
YTZ
-
SEA
11h 07m
1 stop
$552Multiple Airlines
Wed, Sep 2 - Tue, Sep 8
Air Canada Logo
5:50 am - 1:15 pm
SEA
-
YTZ
28h 25m
2 stops
Air Canada Logo
6:45 am - 10:42 pm
YTZ
-
SEA
18h 57m
2 stops
$555Air Canada
Tue, Sep 29 - Fri, Oct 2

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United Airlines flights from Seattle to Toronto Island Airport

Our best United Airlines deals on Seattle to Toronto Island Airport flight tickets
United Airlines
Aug 31
SEA11:00 pmSeattle/Tacoma Intl
8h 07m
1 stop
YTZ10:07 amToronto Island
Sep 9
YTZ12:15 pmToronto Island
10h 00m
1 stop
SEA7:15 pmSeattle/Tacoma Intl
$567
United Airlines
Aug 28
SEA11:00 pmSeattle/Tacoma Intl
8h 07m
1 stop
YTZ10:07 amToronto Island
Sep 1
YTZ12:15 pmToronto Island
9h 52m
1 stop
SEA7:07 pmSeattle/Tacoma Intl
$583
United Airlines
Sep 29
SEA11:13 pmSeattle/Tacoma Intl
14h 29m
1 stop
YTZ4:42 pmToronto Island
Oct 2
YTZ12:15 pmToronto Island
12h 44m
2 stops
SEA9:59 pmSeattle/Tacoma Intl
$593

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Oct 15
SEA5:40 amSeattle/Tacoma Intl
12h 50m
2 stops
YTZ9:30 pmToronto Island
Oct 20
YTZ10:45 amToronto Island
14h 57m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$534
Air Canada
Sep 29
SEA5:50 amSeattle/Tacoma Intl
28h 25m
2 stops
YTZ1:15 pmToronto Island
Oct 2
YTZ6:45 amToronto Island
18h 57m
2 stops
SEA10:42 pmSeattle/Tacoma Intl
$555

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 July 12, 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 - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 8/25

9:35 pm-12:55 pm

1 stop12h 20m

Toronto Island

Tue 9/1

9:15 am-8:34 pm

1 stop14h 19m

$484

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 8/19

5:51 pm-1:05 pm

1 stop16h 14m

Toronto Island

Sat 8/22

1:40 pm-9:57 pm

1 stop11h 17m

$517

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/2

9:35 pm-12:55 pm

1 stop12h 20m

Toronto Island

Tue 9/8

1:40 pm-8:44 pm

1 stop10h 04m

$532

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 10/15

5:40 am-9:30 pm

2 stops12h 50m

Toronto Island

Tue 10/20

10:45 am-10:42 pm

2 stops14h 57m

$534

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/16

3:29 pm-8:47 am

1 stop14h 18m

Toronto Island

Wed 9/30

1:35 pm-8:01 pm

1 stop9h 26m

$539
Quickest round-trip

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 8/25

9:35 pm-12:55 pm

1 stop12h 20m

Toronto Island

Sat 8/29

1:40 pm-8:34 pm

1 stop9h 54m

$542

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 9/15

3:29 pm-8:47 am

1 stop14h 18m

Toronto Island

Tue 9/22

8:50 am-8:01 pm

1 stop14h 11m

$544

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/16

6:51 pm-12:57 pm

2 stops15h 06m

Toronto Island

Wed 9/30

3:05 pm-11:12 pm

1 stop11h 07m

$550

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 9/2

3:29 pm-8:57 am

1 stop14h 28m

Toronto Island

Tue 9/8

3:05 pm-11:12 pm

1 stop11h 07m

$552

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 9/29

5:50 am-1:15 pm

2 stops28h 25m

Toronto Island

Fri 10/2

6:45 am-10:42 pm

2 stops18h 57m

$555

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

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

You could potentially save up to 54% on your flight if you consider stops on a Seattle to Toronto Island Airport flight.

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

6h 58m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 6h 58m
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?

    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 6h 58m.

  • 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.

An easier way to manage your Toronto Island Airport trip

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Tue 8/11
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