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Cheap flights from Seattle to Toronto from $142

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 5/1. 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
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
3:35 pm - 10:40 pm
YTZ
-
SEA
10h 05m
2 stops
$326Air Canada
Wed, May 13 - Fri, May 29
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
$411Air Canada
Fri, May 1 - Sat, May 2
Air Canada Logo
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
3:35 pm - 10:43 pm
YTZ
-
SEA
10h 08m
2 stops
$414Air Canada
Tue, May 26 - Tue, Jun 2
Air Canada Logo
10:45 am - 10:12 am
SEA
-
YTZ
20h 27m
2 stops
Air Canada Logo
6:55 pm - 10:08 am
YTZ
-
SEA
18h 13m
2 stops
$419Air Canada
Sun, May 24 - Sun, May 31
Air Canada Logo
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
8:55 pm - 10:05 am
YTZ
-
SEA
16h 10m
2 stops
$422Air Canada
Fri, May 1 - Sun, May 3
Air Canada Logo
3:00 pm - 7:47 am
SEA
-
YTZ
13h 47m
2 stops
Air Canada Logo
8:30 pm - 2:23 pm
YTZ
-
SEA
20h 53m
2 stops
$430Air Canada
Fri, Jun 5 - Tue, Jun 9
Multiple Airlines Logo
5:50 am - 9:48 pm
SEA
-
YTZ
12h 58m
3 stops
Multiple Airlines Logo
6:55 pm - 10:08 am
YTZ
-
SEA
18h 13m
2 stops
$455Multiple Airlines
Sun, May 24 - Sun, May 31
Air Canada Logo
5:50 am - 7:52 am
SEA
-
YTZ
23h 02m
2 stops
Air Canada Logo
3:35 pm - 10:43 pm
YTZ
-
SEA
10h 08m
2 stops
$460Air Canada
Mon, May 25 - Mon, Jun 1
Multiple Airlines Logo
5:50 am - 9:48 pm
SEA
-
YTZ
12h 58m
3 stops
Multiple Airlines Logo
4:00 pm - 10:08 am
YTZ
-
SEA
21h 08m
3 stops
$484Multiple Airlines
Sun, May 24 - Sun, May 31
Air Canada Logo
7:20 pm - 10:12 am
SEA
-
YTZ
11h 52m
2 stops
Air Canada Logo
3:35 pm - 10:40 pm
YTZ
-
SEA
10h 05m
2 stops
$486Air Canada
Thu, May 7 - Mon, May 11

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 13
SEA7:20 pmSeattle/Tacoma Intl
11h 52m
2 stops
YTZ10:12 amToronto Island
May 29
YTZ3:35 pmToronto Island
10h 05m
2 stops
SEA10:40 pmSeattle/Tacoma Intl
$326
Air Canada
May 1
SEA7:20 pmSeattle/Tacoma Intl
11h 52m
2 stops
YTZ10:12 amToronto Island
May 2
YTZ6:55 pmToronto Island
18h 10m
2 stops
SEA10:05 amSeattle/Tacoma Intl
$411
Air Canada
May 26
SEA7:20 pmSeattle/Tacoma Intl
11h 52m
2 stops
YTZ10:12 amToronto Island
Jun 2
YTZ3:35 pmToronto Island
10h 08m
2 stops
SEA10:43 pmSeattle/Tacoma Intl
$414

United Airlines flights from Seattle to Toronto Island Airport

Our best United Airlines deals on Seattle to Toronto Island Airport flight tickets
United Airlines
Apr 28
SEA10:48 amSeattle/Tacoma Intl
21h 51m
2 stops
YTZ11:39 amToronto Island
Apr 29
YTZ2:20 pmToronto Island
28h 28m
2 stops
SEA3:48 pmSeattle/Tacoma Intl
$758
United Airlines
Apr 28
SEA7:00 amSeattle/Tacoma Intl
23h 34m
2 stops
YTZ9:34 amToronto Island
Apr 29
YTZ6:10 pmToronto Island
24h 38m
2 stops
SEA3:48 pmSeattle/Tacoma Intl
$801
United Airlines
Apr 18
SEA8:42 amSeattle/Tacoma Intl
21h 52m
3 stops
YTZ9:34 amToronto Island
Apr 24
YTZ6:10 pmToronto Island
27h 36m
2 stops
SEA6:46 pmSeattle/Tacoma Intl
$936

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 April 14, 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

Wed 5/13

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Fri 5/29

3:35 pm-10:40 pm

2 stops10h 05m

$326

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 5/1

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Sat 5/2

6:55 pm-10:05 am

2 stops18h 10m

$411

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Tue 5/26

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Tue 6/2

3:35 pm-10:43 pm

2 stops10h 08m

$414

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 5/24

10:45 am-10:12 am

2 stops20h 27m

Toronto Island

Sun 5/31

6:55 pm-10:08 am

2 stops18h 13m

$419

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 5/1

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Sun 5/3

8:55 pm-10:05 am

2 stops16h 10m

$422

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Fri 6/5

3:00 pm-7:47 am

2 stops13h 47m

Toronto Island

Tue 6/9

8:30 pm-2:23 pm

2 stops20h 53m

$430

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 5/24

5:50 am-9:48 pm

3 stops12h 58m

Toronto Island

Sun 5/31

6:55 pm-10:08 am

2 stops18h 13m

$455

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Mon 5/25

5:50 am-7:52 am

2 stops23h 02m

Toronto Island

Mon 6/1

3:35 pm-10:43 pm

2 stops10h 08m

$460

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Sun 5/24

5:50 am-9:48 pm

3 stops12h 58m

Toronto Island

Sun 5/31

4:00 pm-10:08 am

3 stops21h 08m

$484

SeattleToronto

SEA - YTZ

SEAYTZ

Seattle/Tacoma Intl

Thu 5/7

7:20 pm-10:12 am

2 stops11h 52m

Toronto Island

Mon 5/11

3:35 pm-10:40 pm

2 stops10h 05m

$486

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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.
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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 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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