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Cheap flights from Seattle to Toronto from $123

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 1/18. 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
8:00 pm - 9:42 am
SEA
-
YTZ
10h 42m2 stops
Air Canada Logo
8:30 pm - 2:31 pm
YTZ
-
SEA
21h 01m2 stops
$288Air Canada
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
5:50 am - 6:13 pm
SEA
-
YTZ
9h 23m2 stops
Air Canada Logo
3:30 pm - 9:31 am
YTZ
-
SEA
21h 01m2 stops
$303Air Canada
Sat, Jan 17 - Sat, Jan 24
Air Canada Logo
8:00 pm - 11:42 am
SEA
-
YTZ
12h 42m2 stops
Air Canada Logo
6:30 pm - 2:31 pm
YTZ
-
SEA
23h 01m2 stops
$310Air Canada
Sat, Jan 31 - Sat, Feb 7
Air Canada Logo
8:00 pm - 9:42 am
SEA
-
YTZ
10h 42m2 stops
Air Canada Logo
6:30 pm - 2:31 pm
YTZ
-
SEA
23h 01m2 stops
$311Air Canada
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
5:50 am - 6:13 pm
SEA
-
YTZ
9h 23m2 stops
Multiple Airlines Logo
4:30 pm - 10:25 am
YTZ
-
SEA
20h 55m3 stops
$320Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
8:00 pm - 11:42 am
SEA
-
YTZ
12h 42m2 stops
Air Canada Logo
8:30 pm - 7:16 pm
YTZ
-
SEA
25h 46m2 stops
$329Air Canada
Sat, Jan 17 - Tue, Jan 20
Multiple Airlines Logo
11:55 am - 9:42 am
SEA
-
YTZ
18h 47m3 stops
Multiple Airlines Logo
4:30 pm - 10:25 am
YTZ
-
SEA
20h 55m3 stops
$363Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Multiple Airlines Logo
5:45 pm - 9:20 pm
SEA
-
YTZ
24h 35m2 stops
Multiple Airlines Logo
12:30 pm - 9:28 pm
YTZ
-
SEA
11h 58m1 stop
$381Multiple Airlines
Sat, Jan 31 - Sat, Feb 7
Multiple Airlines Logo
3:10 pm - 4:13 pm
SEA
-
YTZ
22h 03m2 stops
Multiple Airlines Logo
1:30 pm - 9:28 pm
YTZ
-
SEA
10h 58m1 stop
$388Multiple Airlines
Fri, Jan 30 - Fri, Feb 6
Air Canada Logo
8:00 pm - 9:42 am
SEA
-
YTZ
10h 42m2 stops
Air Canada Logo
8:30 am - 9:15 am
YTZ
-
SEA
27h 45m2 stops
$394Air Canada
Fri, Jan 23 - Sun, Jan 25

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Jan 30
SEA8:00 pmSeattle/Tacoma Intl
10h 42m
2 stops
YTZ9:42 amToronto Island
Feb 6
YTZ8:30 pmToronto Island
21h 01m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$288
Find similar
Air Canada
Jan 17
SEA5:50 amSeattle/Tacoma Intl
9h 23m
2 stops
YTZ6:13 pmToronto Island
Jan 24
YTZ3:30 pmToronto Island
21h 01m
2 stops
SEA9:31 amSeattle/Tacoma Intl
$303
Find similar
Air Canada
Jan 31
SEA8:00 pmSeattle/Tacoma Intl
12h 42m
2 stops
YTZ11:42 amToronto Island
Feb 7
YTZ6:30 pmToronto Island
23h 01m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$310
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 December 18, 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

Fri 1/30

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Fri 2/6

8:30 pm-2:31 pm

2 stops21h 01m

$288

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/17

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Sat 1/24

3:30 pm-9:31 am

2 stops21h 01m

$303

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/31

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Sat 2/7

6:30 pm-2:31 pm

2 stops23h 01m

$310

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/31

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sat 2/7

6:30 pm-2:31 pm

2 stops23h 01m

$311

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/30

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Fri 2/6

4:30 pm-10:25 am

3 stops20h 55m

$320

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/17

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Tue 1/20

8:30 pm-7:16 pm

2 stops25h 46m

$329

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/30

11:55 am-9:42 am

3 stops18h 47m

Toronto Island

Fri 2/6

4:30 pm-10:25 am

3 stops20h 55m

$363

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 1/31

5:45 pm-9:20 pm

2 stops24h 35m

Toronto Island

Sat 2/7

12:30 pm-9:28 pm

1 stop11h 58m

$381

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/30

3:10 pm-4:13 pm

2 stops22h 03m

Toronto Island

Fri 2/6

1:30 pm-9:28 pm

1 stop10h 58m

$388

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 1/23

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Sun 1/25

8:30 am-9:15 am

2 stops27h 45m

$394

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 16m

Direct flights

None
The fastest flight from Seattle to Toronto Island Airport takes 7h 16m
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 16m.

  • 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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