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Cheap flights from Toronto Island Airport to Seattle from $164

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto Island Airport to Seattle departing on 3/10. 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 Toronto Island Airport to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
12:30 pm - 7:37 pm
YTZ
-
SEA
10h 07m
1 stop
Air Canada Logo
7:15 am - 7:52 pm
SEA
-
YTZ
9h 37m
1 stop
$246Air Canada
Wed, May 6 - Fri, May 8
Air Canada Logo
12:30 pm - 10:57 pm
YTZ
-
SEA
13h 27m
2 stops
Air Canada Logo
5:40 am - 6:10 pm
SEA
-
YTZ
9h 30m
2 stops
$273Air Canada
Tue, Mar 3 - Wed, Mar 4
Air Canada Logo
6:30 pm - 3:01 pm
YTZ
-
SEA
23h 31m
2 stops
Air Canada Logo
8:00 pm - 6:10 pm
SEA
-
YTZ
19h 10m
2 stops
$306Air Canada
Tue, Mar 3 - Wed, Mar 4
Air Canada Logo
6:30 pm - 3:01 pm
YTZ
-
SEA
23h 31m
2 stops
Air Canada Logo
8:00 pm - 6:10 pm
SEA
-
YTZ
19h 10m
2 stops
$307Air Canada
Tue, Mar 3 - Wed, Mar 4
Air Canada Logo
12:30 pm - 10:56 pm
YTZ
-
SEA
13h 26m
2 stops
Air Canada Logo
5:40 am - 9:35 pm
SEA
-
YTZ
12h 55m
2 stops
$311Air Canada
Sat, Mar 21 - Sat, Mar 28
Air Canada Logo
10:25 am - 10:56 pm
YTZ
-
SEA
15h 31m
2 stops
Air Canada Logo
5:40 am - 8:55 pm
SEA
-
YTZ
12h 15m
2 stops
$334Air Canada
Sat, Mar 21 - Sat, Mar 28
Air Canada Logo
3:35 pm - 10:10 pm
YTZ
-
SEA
9h 35m
2 stops
Air Canada Logo
8:00 pm - 10:25 am
SEA
-
YTZ
11h 25m
2 stops
$335Air Canada
Fri, Apr 10 - Mon, Apr 13
Air Canada Logo
6:30 pm - 3:01 pm
YTZ
-
SEA
23h 31m
2 stops
Air Canada Logo
8:00 pm - 9:42 am
SEA
-
YTZ
10h 42m
2 stops
$421Air Canada
Tue, Mar 3 - Wed, Mar 4
Multiple Airlines Logo
9:15 am - 6:40 pm
YTZ
-
SEA
12h 25m
1 stop
Multiple Airlines Logo
12:35 am - 6:57 pm
SEA
-
YTZ
15h 22m
1 stop
$423Multiple Airlines
Tue, Mar 17 - Wed, Mar 18
Multiple Airlines Logo
12:30 pm - 10:56 pm
YTZ
-
SEA
13h 26m
2 stops
Multiple Airlines Logo
11:55 am - 9:50 pm
SEA
-
YTZ
30h 55m
3 stops
$444Multiple Airlines
Sat, Mar 21 - Sat, Mar 28

Air Canada flights from Toronto Island Airport to Seattle

Our best Air Canada deals on Toronto Island Airport to Seattle flight tickets
Air Canada
May 6
YTZ12:30 pmToronto Island
10h 07m
1 stop
SEA7:37 pmSeattle/Tacoma Intl
May 8
SEA7:15 amSeattle/Tacoma Intl
9h 37m
1 stop
YTZ7:52 pmToronto Island
$246
Air Canada
Mar 3
YTZ12:30 pmToronto Island
13h 27m
2 stops
SEA10:57 pmSeattle/Tacoma Intl
Mar 4
SEA5:40 amSeattle/Tacoma Intl
9h 30m
2 stops
YTZ6:10 pmToronto Island
$273
Air Canada
Mar 3
YTZ6:30 pmToronto Island
23h 31m
2 stops
SEA3:01 pmSeattle/Tacoma Intl
Mar 4
SEA8:00 pmSeattle/Tacoma Intl
19h 10m
2 stops
YTZ6:10 pmToronto Island
$306

Porter Airlines flights from Toronto Island Airport to Seattle

Our best Porter Airlines deals on Toronto Island Airport to Seattle flight tickets
Porter Airlines
Feb 17
YTZ3:00 pmToronto Island
11h 51m
1 stop
SEA11:51 pmSeattle/Tacoma Intl
Feb 20
SEA11:35 pmSeattle/Tacoma Intl
9h 05m
1 stop
YTZ11:40 amToronto Island
$605
Porter Airlines
Feb 17
YTZ12:50 pmToronto Island
14h 01m
2 stops
SEA11:51 pmSeattle/Tacoma Intl
Feb 20
SEA11:35 pmSeattle/Tacoma Intl
10h 45m
1 stop
YTZ1:20 pmToronto Island
$606

momondo Fare Finder

 
Customize your flight search to find flights from Toronto Island Airport to Seattle 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 6, 2026.
Use the filters below to find and compare flights from Toronto Island Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 5/6

12:30 pm-7:37 pm

1 stop10h 07m

Seattle/Tacoma Intl

Fri 5/8

7:15 am-7:52 pm

1 stop9h 37m

$246

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 3/3

12:30 pm-10:57 pm

2 stops13h 27m

Seattle/Tacoma Intl

Wed 3/4

5:40 am-6:10 pm

2 stops9h 30m

$273

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 3/3

6:30 pm-3:01 pm

2 stops23h 31m

Seattle/Tacoma Intl

Wed 3/4

8:00 pm-6:10 pm

2 stops19h 10m

$306

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 3/3

6:30 pm-3:01 pm

2 stops23h 31m

Seattle/Tacoma Intl

Wed 3/4

8:00 pm-6:10 pm

2 stops19h 10m

$307

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 3/21

12:30 pm-10:56 pm

2 stops13h 26m

Seattle/Tacoma Intl

Sat 3/28

5:40 am-9:35 pm

2 stops12h 55m

$311

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 3/21

10:25 am-10:56 pm

2 stops15h 31m

Seattle/Tacoma Intl

Sat 3/28

5:40 am-8:55 pm

2 stops12h 15m

$334

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 4/10

3:35 pm-10:10 pm

2 stops9h 35m

Seattle/Tacoma Intl

Mon 4/13

8:00 pm-10:25 am

2 stops11h 25m

$335

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 3/3

6:30 pm-3:01 pm

2 stops23h 31m

Seattle/Tacoma Intl

Wed 3/4

8:00 pm-9:42 am

2 stops10h 42m

$421

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 3/17

9:15 am-6:40 pm

1 stop12h 25m

Seattle/Tacoma Intl

Wed 3/18

12:35 am-6:57 pm

1 stop15h 22m

$423

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 3/21

12:30 pm-10:56 pm

2 stops13h 26m

Seattle/Tacoma Intl

Sat 3/28

11:55 am-9:50 pm

3 stops30h 55m

$444

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 Seattle from

How to get the cheapest flight ticket from Toronto Island Airport to Seattle

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 day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Toronto Island Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $395. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Toronto Island Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $854.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Toronto Island Airport in the evening is the least expensive time of day to depart. momondo users have found prices as low as $309 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $538. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

When to book flights from Toronto Island Airport to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Toronto Island Airport to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Toronto Island Airport to Seattle (YTZ to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Toronto Island Airport to Seattle

Fastest flight time

9h 51m

Direct flights

None
The fastest flight from Toronto Island Airport to Seattle takes 9h 51m
There are no direct flights from Toronto Island Airport to Seattle. There are no popular flight routes from Toronto Island Airport to Seattle.
Search flight deals

  • How far is Toronto Island to Seattle/Tacoma Intl by plane?

    There are 2064.9 mi between Toronto Island and Seattle/Tacoma Intl. 9h 51m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Toronto Island Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Toronto Island Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How old do you have to be to fly from Toronto Island Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Toronto Island Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Redmond
Puyallup
Cle Elum
Tukwila
Lakewood
Federal Way
Westport
Kirkland
Centralia
Fife
Tumwater

Why use momondo?

Why should I use momondo to find a flight deal from Toronto to Seattle?

It is quick and easy to find Toronto to Seattle flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Seattle that suits you.

Can I find flights from Toronto to Seattle with flexible booking policies on momondo?

Flights from Toronto to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Toronto to Seattle?

Once you have performed a search for Toronto to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Toronto to Seattle right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Toronto to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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