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Cheap flights from Seattle to Toronto from $209

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 6/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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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.
United Airlines Logo
8:00 am - 6:42 pm
SEA
-
YTZ
7h 42m
1 stop
United Airlines Logo
12:15 pm - 7:05 pm
YTZ
-
SEA
9h 50m
1 stop
$468United Airlines
Sat, Jun 6 - Fri, Jun 12
United Airlines Logo
8:00 am - 6:42 pm
SEA
-
YTZ
7h 42m
1 stop
United Airlines Logo
12:15 pm - 7:05 pm
YTZ
-
SEA
9h 50m
1 stop
$477United Airlines
Tue, Jun 9 - Tue, Jun 16
United Airlines Logo
8:00 am - 6:42 pm
SEA
-
YTZ
7h 42m
1 stop
United Airlines Logo
12:15 pm - 8:53 pm
YTZ
-
SEA
11h 38m
2 stops
$482United Airlines
Sat, Jun 6 - Tue, Jun 9
Air Canada Logo
7:20 pm - 7:45 am
SEA
-
YTZ
9h 25m
2 stops
Air Canada Logo
6:55 pm - 10:07 am
YTZ
-
SEA
18h 12m
2 stops
$538Air Canada
Sat, Jul 25 - Sat, Aug 1
Multiple Airlines Logo
10:43 pm - 12:55 pm
SEA
-
YTZ
11h 12m
1 stop
Multiple Airlines Logo
1:40 pm - 9:09 pm
YTZ
-
SEA
10h 29m
1 stop
$540Multiple Airlines
Tue, Jul 21 - Tue, Jul 28
Air Canada Logo
7:20 pm - 7:45 am
SEA
-
YTZ
9h 25m
2 stops
Air Canada Logo
6:55 pm - 10:07 am
YTZ
-
SEA
18h 12m
2 stops
$547Air Canada
Sun, Jul 19 - Sat, Aug 1
Multiple Airlines Logo
10:43 pm - 12:55 pm
SEA
-
YTZ
11h 12m
1 stop
Multiple Airlines Logo
9:15 am - 9:09 pm
YTZ
-
SEA
14h 54m
1 stop
$551Multiple Airlines
Sun, Jul 26 - Sun, Aug 2
Air Canada Logo
10:30 am - 7:45 am
SEA
-
YTZ
18h 15m
2 stops
Air Canada Logo
6:45 am - 10:42 pm
YTZ
-
SEA
18h 57m
2 stops
$553Air Canada
Sat, Sep 19 - Wed, Sep 23
Air Canada Logo
7:20 pm - 7:45 am
SEA
-
YTZ
9h 25m
2 stops
Air Canada Logo
8:55 pm - 10:07 am
YTZ
-
SEA
16h 12m
2 stops
$555Air Canada
Sun, Jul 19 - Fri, Jul 24
Air Canada Logo
7:20 pm - 7:45 am
SEA
-
YTZ
9h 25m
2 stops
Air Canada Logo
12:15 pm - 7:06 pm
YTZ
-
SEA
9h 51m
1 stop
$557Air Canada
Fri, Jul 10 - Sat, Jul 11

United Airlines flights from Seattle to Toronto Island Airport

Our best United Airlines deals on Seattle to Toronto Island Airport flight tickets
United Airlines
Jun 6
SEA8:00 amSeattle/Tacoma Intl
7h 42m
1 stop
YTZ6:42 pmToronto Island
Jun 12
YTZ12:15 pmToronto Island
9h 50m
1 stop
SEA7:05 pmSeattle/Tacoma Intl
$468
United Airlines
Jun 9
SEA8:00 amSeattle/Tacoma Intl
7h 42m
1 stop
YTZ6:42 pmToronto Island
Jun 16
YTZ12:15 pmToronto Island
9h 50m
1 stop
SEA7:05 pmSeattle/Tacoma Intl
$477
United Airlines
Jun 6
SEA8:00 amSeattle/Tacoma Intl
7h 42m
1 stop
YTZ6:42 pmToronto Island
Jun 9
YTZ12:15 pmToronto Island
11h 38m
2 stops
SEA8:53 pmSeattle/Tacoma Intl
$482

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Jul 25
SEA7:20 pmSeattle/Tacoma Intl
9h 25m
2 stops
YTZ7:45 amToronto Island
Aug 1
YTZ6:55 pmToronto Island
18h 12m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$538
Air Canada
May 29
SEA5:50 amSeattle/Tacoma Intl
23h 02m
2 stops
YTZ7:52 amToronto Island
Jun 5
YTZ8:55 pmToronto Island
16h 10m
2 stops
SEA10:05 amSeattle/Tacoma Intl
$543
Air Canada
Jul 19
SEA7:20 pmSeattle/Tacoma Intl
9h 25m
2 stops
YTZ7:45 amToronto Island
Aug 1
YTZ6:55 pmToronto Island
18h 12m
2 stops
SEA10:07 amSeattle/Tacoma Intl
$547

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 May 27, 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
Quickest round-trip

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 6/6

8:00 am-6:42 pm

1 stop7h 42m

Toronto Island

Fri 6/12

12:15 pm-7:05 pm

1 stop9h 50m

$468

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 6/9

8:00 am-6:42 pm

1 stop7h 42m

Toronto Island

Tue 6/16

12:15 pm-7:05 pm

1 stop9h 50m

$477

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 6/6

8:00 am-6:42 pm

1 stop7h 42m

Toronto Island

Tue 6/9

12:15 pm-8:53 pm

2 stops11h 38m

$482

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 7/25

7:20 pm-7:45 am

2 stops9h 25m

Toronto Island

Sat 8/1

6:55 pm-10:07 am

2 stops18h 12m

$538

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 7/21

10:43 pm-12:55 pm

1 stop11h 12m

Toronto Island

Tue 7/28

1:40 pm-9:09 pm

1 stop10h 29m

$540

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 7/19

7:20 pm-7:45 am

2 stops9h 25m

Toronto Island

Sat 8/1

6:55 pm-10:07 am

2 stops18h 12m

$547

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 7/26

10:43 pm-12:55 pm

1 stop11h 12m

Toronto Island

Sun 8/2

9:15 am-9:09 pm

1 stop14h 54m

$551

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 9/19

10:30 am-7:45 am

2 stops18h 15m

Toronto Island

Wed 9/23

6:45 am-10:42 pm

2 stops18h 57m

$553

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 7/19

7:20 pm-7:45 am

2 stops9h 25m

Toronto Island

Fri 7/24

8:55 pm-10:07 am

2 stops16h 12m

$555

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 7/10

7:20 pm-7:45 am

2 stops9h 25m

Toronto Island

Sat 7/11

12:15 pm-7:06 pm

1 stop9h 51m

$557

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

7h 53m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 53m
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 7h 53m.

  • 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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Fri 6/26
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