What is the cheapest airline that flies from Toronto Island to Seattle/Tacoma Intl?

Air Canada and United Airlines are the most popular carriers operating from Toronto Island to Seattle/Tacoma Intl

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.

$232 Cheap Flights from Toronto Island Airport to Seattle in 2026

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 - 10:42 pm

YTZ

SEA

18h 57m

2 stops

5:40 am - 9:30 pm

SEA

YTZ

12h 50m

2 stops

$411Air Canada

Wed, Oct 21 - Sat, Oct 24

7:25 pm - 9:36 am

YTZ

SEA

17h 11m

1 stop

11:13 pm - 10:06 am

SEA

YTZ

7h 53m

1 stop

$442United Airlines

Wed, Oct 21 - Sat, Oct 24

7:25 pm - 10:01 am

YTZ

SEA

17h 36m

2 stops

1:56 pm - 10:06 am

SEA

YTZ

17h 10m

1 stop

$443United Airlines

Wed, Oct 21 - Sat, Oct 24

7:45 pm - 9:35 am

YTZ

SEA

16h 50m

1 stop

11:00 pm - 10:07 am

SEA

YTZ

8h 07m

1 stop

$446United Airlines

Fri, Sep 4 - Sun, Sep 20

12:15 pm - 7:07 pm

YTZ

SEA

9h 52m

1 stop

11:00 pm - 10:07 am

SEA

YTZ

8h 07m

1 stop

$452United Airlines

Wed, Sep 2 - Wed, Sep 2

12:15 pm - 10:43 pm

YTZ

SEA

13h 28m

1 stop

8:10 am - 6:46 pm

SEA

YTZ

7h 36m

1 stop

$457United Airlines

Mon, Aug 17 - Tue, Sep 1

12:15 pm - 7:07 pm

YTZ

SEA

9h 52m

1 stop

5:26 pm - 10:07 am

SEA

YTZ

13h 41m

1 stop

$458United Airlines

Tue, Aug 18 - Sun, Aug 30

12:15 pm - 7:07 pm

YTZ

SEA

9h 52m

1 stop

11:00 pm - 10:07 am

SEA

YTZ

8h 07m

1 stop

$461United Airlines

Wed, Aug 19 - Mon, Aug 31

10:05 am - 6:16 pm

YTZ

SEA

11h 11m

1 stop

12:16 am - 2:25 pm

SEA

YTZ

11h 09m

1 stop

$483Multiple Airlines

Sat, Sep 5 - Fri, Sep 25

8:40 pm - 8:30 am

YTZ

SEA

14h 50m

1 stop

12:16 am - 2:25 pm

SEA

YTZ

11h 09m

1 stop

$488Multiple Airlines

Tue, Sep 1 - Mon, Sep 21

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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 21

YTZ7:25 pmToronto Island

17h 11m

1 stop

SEA9:36 amSeattle/Tacoma Intl

Oct 24

SEA11:13 pmSeattle/Tacoma Intl

7h 53m

1 stop

YTZ10:06 amToronto Island

$442

United Airlines

Oct 21

YTZ7:25 pmToronto Island

17h 11m

1 stop

SEA9:36 amSeattle/Tacoma Intl

Oct 24

SEA11:13 pmSeattle/Tacoma Intl

7h 53m

1 stop

YTZ10:06 amToronto Island

$443

United Airlines

Sep 4

YTZ7:45 pmToronto Island

16h 50m

1 stop

SEA9:35 amSeattle/Tacoma Intl

Sep 20

SEA11:00 pmSeattle/Tacoma Intl

8h 07m

1 stop

YTZ10:07 amToronto Island

$446

Air Canada flights from Toronto Island Airport to Seattle

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

Air Canada

Oct 21

YTZ6:45 amToronto Island

18h 57m

2 stops

SEA10:42 pmSeattle/Tacoma Intl

Oct 24

SEA5:40 amSeattle/Tacoma Intl

12h 50m

2 stops

YTZ9:30 pmToronto Island

$411

Air Canada

Jul 10

YTZ3:35 pmToronto Island

10h 07m

2 stops

SEA10:42 pmSeattle/Tacoma Intl

Jul 13

SEA10:45 amSeattle/Tacoma Intl

18h 06m

2 stops

YTZ7:51 amToronto Island

$576

Air Canada

Jun 29

YTZ12:30 pmToronto Island

13h 12m

2 stops

SEA10:42 pmSeattle/Tacoma Intl

Jul 8

SEA7:20 pmSeattle/Tacoma Intl

13h 31m

2 stops

YTZ11:51 amToronto Island

$649

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 - SEA

YTZSEA

Toronto Island

Wed 10/21

6:45 am-10:42 pm

2 stops18h 57m

Seattle/Tacoma Intl

Sat 10/24

5:40 am-9:30 pm

2 stops12h 50m

$411

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 10/21

7:25 pm-9:36 am

1 stop17h 11m

Seattle/Tacoma Intl

Sat 10/24

11:13 pm-10:06 am

1 stop7h 53m

$442

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 10/21

7:25 pm-10:01 am

2 stops17h 36m

Seattle/Tacoma Intl

Sat 10/24

1:56 pm-10:06 am

1 stop17h 10m

$443

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 9/4

7:45 pm-9:35 am

1 stop16h 50m

Seattle/Tacoma Intl

Sun 9/20

11:00 pm-10:07 am

1 stop8h 07m

$446

Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 9/2

12:15 pm-7:07 pm

1 stop9h 52m

Seattle/Tacoma Intl

Wed 9/2

11:00 pm-10:07 am

1 stop8h 07m

$452

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 8/17

12:15 pm-10:43 pm

1 stop13h 28m

Seattle/Tacoma Intl

Tue 9/1

8:10 am-6:46 pm

1 stop7h 36m

$457

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 8/18

12:15 pm-7:07 pm

1 stop9h 52m

Seattle/Tacoma Intl

Sun 8/30

5:26 pm-10:07 am

1 stop13h 41m

$458

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Wed 8/19

12:15 pm-7:07 pm

1 stop9h 52m

Seattle/Tacoma Intl

Mon 8/31

11:00 pm-10:07 am

1 stop8h 07m

$461

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Sat 9/5

10:05 am-6:16 pm

1 stop11h 11m

Seattle/Tacoma Intl

Fri 9/25

12:16 am-2:25 pm

1 stop11h 09m

$483

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 9/1

8:40 pm-8:30 am

1 stop14h 50m

Seattle/Tacoma Intl

Mon 9/21

12:16 am-2:25 pm

1 stop11h 09m

$488

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

Prices

Airlines

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 $435. 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 $757.

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 $450 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $611. 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 33m
Direct flights	None

The fastest flight from Toronto Island Airport to Seattle takes 9h 33m

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. 9h 33m 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.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Lakewood

Puyallup

Tukwila

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Fife

Cle Elum

Marysville

Centralia

Kirkland

Shoreline

Westport

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.