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.

$234 Cheap Flights from Toronto Island Airport to Seattle in 2026/27

Find the cheapest flights from Toronto Island Airport to Seattle

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 am - 9:57 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

18h 12m3 stops Montreal St Hubert Calgary Vancouver Intl

7:05 pm - 8:55 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

22h 50m3 stops Vancouver Intl Calgary Montreal St Hubert

$498Multiple Airlines

Tue, Nov 3 - Tue, Nov 10

9:15 am - 8:24 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

14h 09m1 stop Washington, D.C. Dulles Intl

9:36 pm - 12:52 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

12h 16m1 stop Washington, D.C. Dulles Intl

$506Multiple Airlines

Fri, Oct 23 - Fri, Oct 30

11:55 am - 10:47 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

13h 52m3 stops Ottawa Calgary Vancouver Intl

4:27 pm - 3:21 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

19h 54m3 stops Denver Intl Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

$510Multiple Airlines

Sat, Oct 24 - Sat, Oct 31

9:15 am - 8:24 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

14h 09m1 stop Washington, D.C. Dulles Intl

9:36 pm - 12:52 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

12h 16m1 stop Washington, D.C. Dulles Intl

$515Multiple Airlines

Fri, Oct 23 - Thu, Oct 29

10:35 am - 6:48 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

11h 13m1 stop Chicago O'Hare Intl

8:08 am - 9:06 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

9h 58m1 stop Chicago O'Hare Intl

$516Multiple Airlines

Mon, Nov 16 - Mon, Nov 23

1:40 pm - 8:24 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

9h 44m1 stop Washington, D.C. Dulles Intl

9:36 pm - 12:52 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

12h 16m1 stop Washington, D.C. Dulles Intl

$517Multiple Airlines

Thu, Oct 22 - Thu, Oct 29

4:55 pm - 9:40 amYTZ Toronto Island-SEA Seattle/Tacoma Intl

19h 45m3 stops Ottawa Vancouver Intl Calgary

7:35 pm - 7:30 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

20h 55m3 stops Calgary Vancouver Intl Montreal St Hubert

$523Multiple Airlines

Fri, Oct 16 - Wed, Oct 21

10:35 am - 6:28 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

10h 53m1 stop Chicago O'Hare Intl

4:27 pm - 3:06 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

19h 39m2 stops Denver Intl Chicago O'Hare Intl

$524Multiple Airlines

Sat, Oct 31 - Sat, Nov 7

6:45 am - 2:44 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

10h 59m2 stops Montreal St Hubert Vancouver Intl

11:42 pm - 3:06 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

12h 24m1 stop Chicago O'Hare Intl

$526Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

6:45 am - 6:31 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

14h 46m2 stops Montreal St Hubert Vancouver Intl

10:22 am - 9:06 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

7h 44m1 stop Chicago O'Hare Intl

$527Multiple Airlines

Thu, Oct 29 - Wed, Dec 2

Cheap last minute flights

Enter your travel dates to find the best prices.

3:45 pm - 11:12 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

10h 27m1 stop Boston Logan Intl

11:00 pm - 12:57 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

10h 57m1 stop Boston Logan Intl

$906Multiple Airlines

Sat, Sep 26 - Sat, Oct 10

10:10 am - 6:25 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

11h 15m1 stop Chicago Midway

7:45 pm - 2:25 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

15h 40m2 stops Las Vegas Harry Reid Intl Chicago O'Hare Intl

$927Multiple Airlines

Wed, Sep 23 - Mon, Sep 28

3:45 pm - 11:12 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

10h 27m1 stop Boston Logan Intl

7:58 pm - 12:57 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

13h 59m2 stops Portland Boston Logan Intl

$956Multiple Airlines

Sat, Sep 26 - Sat, Oct 3

12:15 pm - 6:52 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

9h 37m1 stop Chicago O'Hare Intl

11:13 pm - 10:07 amSEA Seattle/Tacoma Intl-YTZ Toronto Island

7h 54m1 stop Chicago O'Hare Intl

$957United Airlines

Thu, Sep 24 - Thu, Sep 24

3:45 pm - 11:12 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

10h 27m1 stop Boston Logan Intl

11:00 pm - 12:57 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

10h 57m1 stop Boston Logan Intl

$967Multiple Airlines

Sat, Sep 26 - Sat, Oct 3

10:10 am - 6:25 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

11h 15m1 stop Chicago Midway

12:16 am - 2:25 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

11h 09m1 stop Chicago O'Hare Intl

$1,001Multiple Airlines

Wed, Sep 23 - Sun, Sep 27

10:10 am - 6:25 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

11h 15m1 stop Chicago Midway

5:51 pm - 2:25 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

17h 34m1 stop Chicago O'Hare Intl

$1,036Multiple Airlines

Wed, Sep 23 - Sun, Sep 27

6:55 pm - 10:05 amYTZ Toronto Island-SEA Seattle/Tacoma Intl

18h 10m2 stops Ottawa Vancouver Intl

3:29 pm - 8:47 amSEA Seattle/Tacoma Intl-YTZ Toronto Island

14h 18m1 stop Boston Logan Intl

$1,047Multiple Airlines

Mon, Sep 28 - Tue, Sep 29

8:15 pm - 10:22 amYTZ Toronto Island-SEA Seattle/Tacoma Intl

17h 07m1 stop Newark

10:40 pm - 9:35 amSEA Seattle/Tacoma Intl-YTZ Toronto Island

7h 55m1 stop Newark

$1,060Multiple Airlines

Sun, Sep 27 - Fri, Oct 9

3:45 pm - 10:37 pmYTZ Toronto Island-SEA Seattle/Tacoma Intl

9h 52m1 stop Boston Logan Intl

11:42 pm - 12:57 pmSEA Seattle/Tacoma Intl-YTZ Toronto Island

10h 15m1 stop Boston Logan Intl

$1,086Multiple Airlines

Mon, Sep 28 - Sun, Oct 4

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Air Canada flights from Toronto Island Airport to Seattle

Our best Air Canada deals on Toronto Island Airport to Seattle flight tickets

Air Canada

Nov 2

YTZ12:30 pmToronto Island

12h 27m

2 stops

SEA9:57 pmSeattle/Tacoma Intl

Nov 9

SEA7:05 pmSeattle/Tacoma Intl

13h 46m

2 stops

YTZ11:51 amToronto Island

$539

Air Canada

Oct 14

YTZ8:30 pmToronto Island

20h 52m

2 stops

SEA2:22 pmSeattle/Tacoma Intl

Oct 18

SEA7:15 pmSeattle/Tacoma Intl

9h 30m

2 stops

YTZ7:45 amToronto Island

$552

Air Canada

Oct 14

YTZ8:30 pmToronto Island

20h 52m

2 stops

SEA2:22 pmSeattle/Tacoma Intl

Oct 18

SEA7:15 pmSeattle/Tacoma Intl

9h 30m

2 stops

YTZ7:45 amToronto Island

$553

United Airlines flights from Toronto Island Airport to Seattle

Our best United Airlines deals on Toronto Island Airport to Seattle flight tickets

United Airlines

Oct 6

YTZ12:15 pmToronto Island

9h 37m

1 stop

SEA6:52 pmSeattle/Tacoma Intl

Oct 14

SEA11:14 pmSeattle/Tacoma Intl

16h 43m

1 stop

YTZ6:57 pmToronto Island

$687

United Airlines

Oct 7

YTZ12:15 pmToronto Island

14h 11m

2 stops

SEA11:26 pmSeattle/Tacoma Intl

Oct 15

SEA8:29 pmSeattle/Tacoma Intl

17h 19m

2 stops

YTZ4:48 pmToronto Island

$694

United Airlines

Oct 5

YTZ12:15 pmToronto Island

13h 38m

1 stop

SEA10:53 pmSeattle/Tacoma Intl

Oct 14

SEA11:13 pmSeattle/Tacoma Intl

14h 35m

1 stop

YTZ4:48 pmToronto Island

$713

momondo Fare Finder

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

Cheapest round-trip

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Tue 11/3

6:45 am-9:57 pm

3 stops18h 12m

Seattle/Tacoma Intl

Tue 11/10

7:05 pm-8:55 pm

3 stops22h 50m

$498

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 10/23

9:15 am-8:24 pm

1 stop14h 09m

Seattle/Tacoma Intl

Fri 10/30

9:36 pm-12:52 pm

1 stop12h 16m

$506

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Sat 10/24

11:55 am-10:47 pm

3 stops13h 52m

Seattle/Tacoma Intl

Sat 10/31

4:27 pm-3:21 pm

3 stops19h 54m

$510

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 10/23

9:15 am-8:24 pm

1 stop14h 09m

Seattle/Tacoma Intl

Thu 10/29

9:36 pm-12:52 pm

1 stop12h 16m

$515

Quickest round-trip

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Mon 11/16

10:35 am-6:48 pm

1 stop11h 13m

Seattle/Tacoma Intl

Mon 11/23

8:08 am-9:06 pm

1 stop9h 58m

$516

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Thu 10/22

1:40 pm-8:24 pm

1 stop9h 44m

Seattle/Tacoma Intl

Thu 10/29

9:36 pm-12:52 pm

1 stop12h 16m

$517

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Fri 10/16

4:55 pm-9:40 am

3 stops19h 45m

Seattle/Tacoma Intl

Wed 10/21

7:35 pm-7:30 pm

3 stops20h 55m

$523

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Sat 10/31

10:35 am-6:28 pm

1 stop10h 53m

Seattle/Tacoma Intl

Sat 11/7

4:27 pm-3:06 pm

2 stops19h 39m

$524

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Wed 11/11

6:45 am-2:44 pm

2 stops10h 59m

Seattle/Tacoma Intl

Mon 11/16

11:42 pm-3:06 pm

1 stop12h 24m

$526

TorontoSeattle

YTZ Toronto Island - SEA Seattle/Tacoma Intl

YTZSEA

Toronto Island

Thu 10/29

6:45 am-6:31 pm

2 stops14h 46m

Seattle/Tacoma Intl

Wed 12/2

10:22 am-9:06 pm

1 stop7h 44m

$527

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 $445. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday 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 $804.

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 $461 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $694. 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

Best Price Found	$234
Fastest flight time	8h 50m
Direct flights	None

The best one-way flight to Seattle from Toronto Island Airport in the past 72 hours is $234. The best round-trip flight deal from Toronto Island Airport to Seattle found on momondo in the last 72 hours is $498.

The fastest flight from Toronto Island Airport to Seattle takes 8h 50m

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

Frequently asked questions about flying from Toronto Island Airport to Seattle

How far is Toronto Island to Seattle/Tacoma Intl by plane?
There are 2064.9 mi between Toronto Island and Seattle/Tacoma Intl. 8h 50m 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.

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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.