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Cheap flights from Seattle to Toronto from $120

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 5/16. 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
6:55 pm - 10:05 am
YTZ
-
SEA
18h 10m
2 stops
$309Air Canada
Sat, May 9 - Sat, May 16
Air Canada Logo
10:20 am - 10:25 am
SEA
-
YTZ
21h 05m
2 stops
Air Canada Logo
6:55 pm - 10:05 am
YTZ
-
SEA
18h 10m
2 stops
$315Air Canada
Thu, Apr 23 - Fri, May 1
Air Canada Logo
8:00 pm - 10:25 am
SEA
-
YTZ
11h 25m
2 stops
Air Canada Logo
6:50 am - 7:20 pm
YTZ
-
SEA
15h 30m
2 stops
$320Air Canada
Tue, Apr 21 - Wed, Apr 29
Air Canada Logo
8:00 pm - 6:22 pm
SEA
-
YTZ
19h 22m
2 stops
Air Canada Logo
6:55 pm - 3:05 pm
YTZ
-
SEA
23h 10m
2 stops
$350Air Canada
Sat, Apr 11 - Tue, Apr 14
Air Canada Logo
10:45 am - 1:17 pm
SEA
-
YTZ
23h 32m
2 stops
Air Canada Logo
8:30 pm - 2:20 pm
YTZ
-
SEA
20h 50m
2 stops
$370Air Canada
Tue, May 5 - Tue, May 12
Air Canada Logo
10:45 am - 1:17 pm
SEA
-
YTZ
23h 32m
2 stops
Air Canada Logo
6:55 pm - 2:20 pm
YTZ
-
SEA
22h 25m
2 stops
$388Air Canada
Tue, May 5 - Wed, May 6
Air Canada Logo
5:50 am - 7:52 am
SEA
-
YTZ
23h 02m
2 stops
Air Canada Logo
8:30 pm - 2:20 pm
YTZ
-
SEA
20h 50m
2 stops
$392Air Canada
Mon, May 4 - Mon, May 11
Air Canada Logo
5:50 am - 7:52 am
SEA
-
YTZ
23h 02m
2 stops
Air Canada Logo
6:55 pm - 2:20 pm
YTZ
-
SEA
22h 25m
2 stops
$402Air Canada
Fri, May 8 - Fri, May 15
Air Canada Logo
5:40 am - 6:22 pm
SEA
-
YTZ
9h 42m
2 stops
Air Canada Logo
3:40 pm - 10:53 pm
YTZ
-
SEA
10h 13m
2 stops
$412Air Canada
Sun, Apr 12 - Sat, Apr 18
Air Canada Logo
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
10:20 am - 10:40 pm
YTZ
-
SEA
15h 20m
2 stops
$418Air Canada
Thu, May 7 - Wed, May 13

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
May 9
SEA7:20 pmSeattle/Tacoma Intl
11h 52m
2 stops
YTZ10:12 amToronto Island
May 16
YTZ6:55 pmToronto Island
18h 10m
2 stops
SEA10:05 amSeattle/Tacoma Intl
$297
Air Canada
May 9
SEA7:20 pmSeattle/Tacoma Intl
11h 52m
2 stops
YTZ10:12 amToronto Island
May 16
YTZ6:55 pmToronto Island
18h 10m
2 stops
SEA10:05 amSeattle/Tacoma Intl
$309
Air Canada
Apr 23
SEA10:20 amSeattle/Tacoma Intl
21h 05m
2 stops
YTZ10:25 amToronto Island
May 1
YTZ6:55 pmToronto Island
18h 10m
2 stops
SEA10:05 amSeattle/Tacoma Intl
$315

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 3
SEA7:40 amSeattle/Tacoma Intl
8h 02m
1 stop
YTZ6:42 pmToronto Island
Jun 6
YTZ12:15 pmToronto Island
12h 44m
2 stops
SEA9:59 pmSeattle/Tacoma Intl
$437
United Airlines
Jun 3
SEA10:40 pmSeattle/Tacoma Intl
8h 26m
1 stop
YTZ10:06 amToronto Island
Jun 8
YTZ2:55 pmToronto Island
8h 51m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
$438
United Airlines
Jun 4
SEA7:40 amSeattle/Tacoma Intl
8h 02m
1 stop
YTZ6:42 pmToronto Island
Jun 8
YTZ2:55 pmToronto Island
8h 51m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
$449

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 March 25, 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

Sat 5/9

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Sat 5/16

6:55 pm-10:05 am

2 stops18h 10m

$309

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 4/23

10:20 am-10:25 am

2 stops21h 05m

Toronto Island

Fri 5/1

6:55 pm-10:05 am

2 stops18h 10m

$315

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 4/21

8:00 pm-10:25 am

2 stops11h 25m

Toronto Island

Wed 4/29

6:50 am-7:20 pm

2 stops15h 30m

$320

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 4/11

8:00 pm-6:22 pm

2 stops19h 22m

Toronto Island

Tue 4/14

6:55 pm-3:05 pm

2 stops23h 10m

$350

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 5/5

10:45 am-1:17 pm

2 stops23h 32m

Toronto Island

Tue 5/12

8:30 pm-2:20 pm

2 stops20h 50m

$370

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 5/5

10:45 am-1:17 pm

2 stops23h 32m

Toronto Island

Wed 5/6

6:55 pm-2:20 pm

2 stops22h 25m

$388

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 5/4

5:50 am-7:52 am

2 stops23h 02m

Toronto Island

Mon 5/11

8:30 pm-2:20 pm

2 stops20h 50m

$392

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 5/8

5:50 am-7:52 am

2 stops23h 02m

Toronto Island

Fri 5/15

6:55 pm-2:20 pm

2 stops22h 25m

$402
Quickest round-trip

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 4/12

5:40 am-6:22 pm

2 stops9h 42m

Toronto Island

Sat 4/18

3:40 pm-10:53 pm

2 stops10h 13m

$412

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 5/7

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Wed 5/13

10:20 am-10:40 pm

2 stops15h 20m

$418

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 14m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 14m
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?

    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 14m.

  • 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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