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Cheap flights from Seattle to Toronto from $105

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 5/19. 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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:40 am - 9:32 pm
SEA
-
YTZ
12h 52m
2 stops
Air Canada Logo
3:35 pm - 10:50 pm
YTZ
-
SEA
10h 15m
2 stops
$279Air Canada
Tue, Mar 31 - Sat, Apr 25
Air Canada Logo
8:00 pm - 10:25 am
SEA
-
YTZ
11h 25m
2 stops
Air Canada Logo
3:35 pm - 10:50 pm
YTZ
-
SEA
10h 15m
2 stops
$286Air Canada
Mon, Mar 30 - Sat, Apr 25
Air Canada Logo
3:40 pm - 10:25 am
SEA
-
YTZ
15h 45m
2 stops
Air Canada Logo
3:35 pm - 10:50 pm
YTZ
-
SEA
10h 15m
2 stops
$306Air Canada
Sun, Mar 29 - Sat, Apr 4
Air Canada Logo
7:20 pm - 10:27 am
SEA
-
YTZ
12h 07m
2 stops
Air Canada Logo
8:55 pm - 2:20 pm
YTZ
-
SEA
20h 25m
2 stops
$335Air Canada
Tue, May 26 - Thu, May 28
Air Canada Logo
5:40 am - 7:55 pm
SEA
-
YTZ
11h 15m
2 stops
Air Canada Logo
3:35 pm - 10:50 pm
YTZ
-
SEA
10h 15m
2 stops
$382Air Canada
Sat, Mar 28 - Sat, Apr 4
United Airlines Logo
11:52 pm - 10:06 am
SEA
-
YTZ
7h 14m
1 stop
United Airlines Logo
2:55 pm - 8:46 pm
YTZ
-
SEA
8h 51m
1 stop
$387United Airlines
Thu, Jun 4 - Mon, Jun 8
Air Canada Logo
5:40 am - 6:17 pm
SEA
-
YTZ
9h 37m
2 stops
Air Canada Logo
3:35 pm - 10:10 pm
YTZ
-
SEA
9h 35m
2 stops
$396Air Canada
Fri, Apr 3 - Fri, Apr 10
Air Canada Logo
5:40 am - 6:10 pm
SEA
-
YTZ
9h 30m
2 stops
Air Canada Logo
3:35 pm - 10:50 pm
YTZ
-
SEA
10h 15m
2 stops
$421Air Canada
Sat, Mar 28 - Sat, Apr 4
Air Canada Logo
8:00 pm - 6:10 pm
SEA
-
YTZ
19h 10m
2 stops
Air Canada Logo
8:50 am - 10:57 pm
YTZ
-
SEA
17h 07m
2 stops
$434Air Canada
Sun, Mar 15 - Wed, Mar 18
Multiple Airlines Logo
9:40 pm - 1:10 pm
SEA
-
YTZ
12h 30m
1 stop
Multiple Airlines Logo
9:25 am - 10:02 pm
YTZ
-
SEA
15h 37m
1 stop
$439Multiple Airlines
Tue, Apr 14 - Tue, Apr 21

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Mar 31
SEA5:40 amSeattle/Tacoma Intl
12h 52m
2 stops
YTZ9:32 pmToronto Island
Apr 25
YTZ3:35 pmToronto Island
10h 15m
2 stops
SEA10:50 pmSeattle/Tacoma Intl
$279
Air Canada
Mar 30
SEA8:00 pmSeattle/Tacoma Intl
11h 25m
2 stops
YTZ10:25 amToronto Island
Apr 25
YTZ3:35 pmToronto Island
10h 15m
2 stops
SEA10:50 pmSeattle/Tacoma Intl
$286
Air Canada
Mar 29
SEA3:40 pmSeattle/Tacoma Intl
15h 45m
2 stops
YTZ10:25 amToronto Island
Apr 4
YTZ3:35 pmToronto Island
10h 15m
2 stops
SEA10:50 pmSeattle/Tacoma Intl
$306

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 4
SEA11:52 pmSeattle/Tacoma Intl
7h 14m
1 stop
YTZ10:06 amToronto Island
Jun 8
YTZ2:55 pmToronto Island
8h 51m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
$387
United Airlines
Jun 3
SEA7:40 amSeattle/Tacoma Intl
8h 02m
1 stop
YTZ6:42 pmToronto Island
Jun 9
YTZ2:55 pmToronto Island
8h 51m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
$448
United Airlines
Jun 4
SEA11:52 pmSeattle/Tacoma Intl
7h 14m
1 stop
YTZ10:06 amToronto Island
Jun 9
YTZ2:55 pmToronto Island
8h 51m
1 stop
SEA8:46 pmSeattle/Tacoma Intl
$459

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 February 19, 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

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 3/31

5:40 am-9:32 pm

2 stops12h 52m

Toronto Island

Sat 4/25

3:35 pm-10:50 pm

2 stops10h 15m

$279

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 3/30

8:00 pm-10:25 am

2 stops11h 25m

Toronto Island

Sat 4/25

3:35 pm-10:50 pm

2 stops10h 15m

$286

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 3/29

3:40 pm-10:25 am

2 stops15h 45m

Toronto Island

Sat 4/4

3:35 pm-10:50 pm

2 stops10h 15m

$306

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 5/26

7:20 pm-10:27 am

2 stops12h 07m

Toronto Island

Thu 5/28

8:55 pm-2:20 pm

2 stops20h 25m

$335

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 3/28

5:40 am-7:55 pm

2 stops11h 15m

Toronto Island

Sat 4/4

3:35 pm-10:50 pm

2 stops10h 15m

$382

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 6/4

11:52 pm-10:06 am

1 stop7h 14m

Toronto Island

Mon 6/8

2:55 pm-8:46 pm

1 stop8h 51m

$387

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 4/3

5:40 am-6:17 pm

2 stops9h 37m

Toronto Island

Fri 4/10

3:35 pm-10:10 pm

2 stops9h 35m

$396

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 3/28

5:40 am-6:10 pm

2 stops9h 30m

Toronto Island

Sat 4/4

3:35 pm-10:50 pm

2 stops10h 15m

$421

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 3/15

8:00 pm-6:10 pm

2 stops19h 10m

Toronto Island

Wed 3/18

8:50 am-10:57 pm

2 stops17h 07m

$434

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 4/14

9:40 pm-1:10 pm

1 stop12h 30m

Toronto Island

Tue 4/21

9:25 am-10:02 pm

1 stop15h 37m

$439

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

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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