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Cheap flights from Seattle to Toronto from $130

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 1/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
8:00 pm - 9:42 amSEA-YTZ
10h 42m2 stops
Air Canada Logo
10:25 am - 10:46 pmYTZ-SEA
15h 21m2 stops
$348Air Canada
Find Deal
Thu, Dec 4 - Tue, Dec 9
Air Canada Logo
8:00 pm - 11:42 amSEA-YTZ
12h 42m2 stops
Air Canada Logo
10:25 am - 10:46 pmYTZ-SEA
15h 21m2 stops
$358Air Canada
Find Deal
Thu, Dec 4 - Thu, Dec 11
Air Canada Logo
10:05 am - 9:55 amSEA-YTZ
20h 50m2 stops
Air Canada Logo
8:30 pm - 2:31 pmYTZ-SEA
21h 01m2 stops
$378Air Canada
Find Deal
Sat, Nov 29 - Fri, Dec 5
Air Canada Logo
5:50 am - 6:13 pmSEA-YTZ
9h 23m2 stops
Air Canada Logo
10:25 am - 10:46 pmYTZ-SEA
15h 21m2 stops
$383Air Canada
Find Deal
Wed, Dec 3 - Wed, Dec 10
Air Canada Logo
10:05 am - 9:55 amSEA-YTZ
20h 50m2 stops
Air Canada Logo
8:30 am - 7:16 pmYTZ-SEA
13h 46m2 stops
$434Air Canada
Find Deal
Fri, Nov 28 - Thu, Dec 4
Multiple Airlines Logo
5:49 pm - 1:42 pmSEA-YTZ
16h 53m1 stop
Multiple Airlines Logo
9:15 am - 6:16 pmYTZ-SEA
12h 01m1 stop
$451Multiple Airlines
Find Deal
Tue, Dec 30 - Mon, Jan 5
Multiple Airlines Logo
12:25 am - 6:57 pmSEA-YTZ
15h 32m1 stop
Multiple Airlines Logo
9:15 am - 6:16 pmYTZ-SEA
12h 01m1 stop
$452Multiple Airlines
Find Deal
Mon, Dec 29 - Mon, Jan 5
Multiple Airlines Logo
8:40 am - 8:00 pmSEA-YTZ
8h 20m1 stop
Multiple Airlines Logo
8:55 am - 12:12 amYTZ-SEA
18h 17m2 stops
$466Multiple Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Multiple Airlines Logo
6:15 am - 6:55 pmSEA-YTZ
9h 40m1 stop
Multiple Airlines Logo
1:30 pm - 9:40 pmYTZ-SEA
11h 10m1 stop
$478Multiple Airlines
Find Deal
Fri, Feb 20 - Sat, Feb 28
Multiple Airlines Logo
8:43 am - 7:50 pmSEA-YTZ
8h 07m1 stop
Multiple Airlines Logo
1:30 pm - 7:55 pmYTZ-SEA
9h 25m1 stop
$481Multiple Airlines
Find Deal
Thu, Jan 8 - Mon, Jan 12

Air Canada flights from Seattle to Toronto Island Airport

Our best Air Canada deals on Seattle to Toronto Island Airport flight tickets
Air Canada
Dec 4
SEA8:00 pmSeattle/Tacoma Intl
10h 42m
2 stops
YTZ9:42 amToronto Island
Dec 9
YTZ10:25 amToronto Island
15h 21m
2 stops
SEA10:46 pmSeattle/Tacoma Intl
$348
Find similar
Air Canada
Dec 4
SEA8:00 pmSeattle/Tacoma Intl
12h 42m
2 stops
YTZ11:42 amToronto Island
Dec 11
YTZ10:25 amToronto Island
15h 21m
2 stops
SEA10:46 pmSeattle/Tacoma Intl
$358
Find similar
Air Canada
Nov 29
SEA10:05 amSeattle/Tacoma Intl
20h 50m
2 stops
YTZ9:55 amToronto Island
Dec 5
YTZ8:30 pmToronto Island
21h 01m
2 stops
SEA2:31 pmSeattle/Tacoma Intl
$378
Find similar

Porter Airlines flights from Seattle to Toronto Island Airport

Our best Porter Airlines deals on Seattle to Toronto Island Airport flight tickets
Porter Airlines
Nov 8
SEA9:34 pmSeattle/Tacoma Intl
15h 24m
2 stops
YTZ3:58 pmToronto Island
Nov 10
YTZ1:20 pmToronto Island
11h 31m
1 stop
SEA9:51 pmSeattle/Tacoma Intl
$1,015
Find similar
Porter Airlines
Nov 8
SEA8:48 amSeattle/Tacoma Intl
9h 27m
1 stop
YTZ9:15 pmToronto Island
Nov 10
YTZ1:20 pmToronto Island
11h 31m
1 stop
SEA9:51 pmSeattle/Tacoma Intl
$1,084
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 November 5, 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

Thu 12/4

8:00 pm-9:42 am

2 stops10h 42m

Toronto Island

Tue 12/9

10:25 am-10:46 pm

2 stops15h 21m

$348

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 12/4

8:00 pm-11:42 am

2 stops12h 42m

Toronto Island

Thu 12/11

10:25 am-10:46 pm

2 stops15h 21m

$358

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sat 11/29

10:05 am-9:55 am

2 stops20h 50m

Toronto Island

Fri 12/5

8:30 pm-2:31 pm

2 stops21h 01m

$378

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/3

5:50 am-6:13 pm

2 stops9h 23m

Toronto Island

Wed 12/10

10:25 am-10:46 pm

2 stops15h 21m

$383

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 11/28

10:05 am-9:55 am

2 stops20h 50m

Toronto Island

Thu 12/4

8:30 am-7:16 pm

2 stops13h 46m

$434

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 12/30

5:49 pm-1:42 pm

1 stop16h 53m

Toronto Island

Mon 1/5

9:15 am-6:16 pm

1 stop12h 01m

$451

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 12/29

12:25 am-6:57 pm

1 stop15h 32m

Toronto Island

Mon 1/5

9:15 am-6:16 pm

1 stop12h 01m

$452

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Wed 12/3

8:40 am-8:00 pm

1 stop8h 20m

Toronto Island

Wed 12/10

8:55 am-12:12 am

2 stops18h 17m

$466

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 2/20

6:15 am-6:55 pm

1 stop9h 40m

Toronto Island

Sat 2/28

1:30 pm-9:40 pm

1 stop11h 10m

$478

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 1/8

8:43 am-7:50 pm

1 stop8h 07m

Toronto Island

Mon 1/12

1:30 pm-7:55 pm

1 stop9h 25m

$481

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

Direct flights

None
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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  • 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 8h 07m.

  • 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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