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

United Airlines is the most popular carrier 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.

$220 Cheap Flights from Toronto Island Airport to Seattle in 2026

1 adult

0 bags

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

2:55 pm - 10:12 am

SEA

YTZ

16h 17m

2 stops

$358Air Canada

Thu, May 21 - Wed, May 27

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

7:20 pm - 7:47 am

SEA

YTZ

9h 27m

2 stops

$385Air Canada

Thu, May 28 - Sat, Jun 6

7:20 pm - 8:00 am

YTZ

SEA

15h 40m

2 stops

3:33 pm - 10:06 am

SEA

YTZ

15h 33m

2 stops

$388United Airlines

Fri, Jun 5 - Tue, Jun 9

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

7:20 pm - 7:47 am

SEA

YTZ

9h 27m

2 stops

$392Air Canada

Thu, May 28 - Sat, Jun 6

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

2:55 pm - 10:12 am

SEA

YTZ

16h 17m

2 stops

$405Air Canada

Thu, May 21 - Wed, May 27

12:15 pm - 7:05 pm

YTZ

SEA

9h 50m

1 stop

8:00 am - 6:42 pm

SEA

YTZ

7h 42m

1 stop

$412United Airlines

Thu, Jun 4 - Sat, Jun 6

6:55 pm - 10:05 am

YTZ

SEA

18h 10m

2 stops

7:20 pm - 6:20 pm

SEA

YTZ

20h 00m

2 stops

$423Air Canada

Tue, May 19 - Fri, Jul 24

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

3:00 pm - 6:20 pm

SEA

YTZ

24h 20m

2 stops

$434Air Canada

Tue, May 19 - Sat, Jul 25

8:55 pm - 10:05 am

YTZ

SEA

16h 10m

2 stops

7:20 pm - 7:45 am

SEA

YTZ

9h 25m

2 stops

$436Air Canada

Tue, May 19 - Sun, Jul 26

3:35 pm - 10:40 pm

YTZ

SEA

10h 05m

2 stops

7:20 pm - 7:47 am

SEA

YTZ

9h 27m

2 stops

$451Air Canada

Mon, Jun 1 - Sat, Jun 6

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 21

YTZ8:55 pmToronto Island

16h 10m

2 stops

SEA10:05 amSeattle/Tacoma Intl

May 27

SEA2:55 pmSeattle/Tacoma Intl

16h 17m

2 stops

YTZ10:12 amToronto Island

$358

Air Canada

May 28

YTZ8:55 pmToronto Island

16h 10m

2 stops

SEA10:05 amSeattle/Tacoma Intl

Jun 6

SEA7:20 pmSeattle/Tacoma Intl

9h 27m

2 stops

YTZ7:47 amToronto Island

$385

Air Canada

May 28

YTZ8:55 pmToronto Island

16h 10m

2 stops

SEA10:05 amSeattle/Tacoma Intl

Jun 6

SEA7:20 pmSeattle/Tacoma Intl

9h 27m

2 stops

YTZ7:47 amToronto Island

$392

United Airlines flights from Toronto Island Airport to Seattle

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

United Airlines

Jun 5

YTZ7:20 pmToronto Island

15h 40m

2 stops

SEA8:00 amSeattle/Tacoma Intl

Jun 9

SEA3:33 pmSeattle/Tacoma Intl

15h 33m

2 stops

YTZ10:06 amToronto Island

$388

United Airlines

Jun 4

YTZ12:15 pmToronto Island

9h 50m

1 stop

SEA7:05 pmSeattle/Tacoma Intl

Jun 6

SEA8:00 amSeattle/Tacoma Intl

7h 42m

1 stop

YTZ6:42 pmToronto Island

$412

United Airlines

Jun 5

YTZ12:15 pmToronto Island

9h 50m

1 stop

SEA7:05 pmSeattle/Tacoma Intl

Jun 9

SEA8:00 amSeattle/Tacoma Intl

7h 42m

1 stop

YTZ6:42 pmToronto Island

$466

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

Thu 5/21

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Wed 5/27

2:55 pm-10:12 am

2 stops16h 17m

$358

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 5/28

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Sat 6/6

7:20 pm-7:47 am

2 stops9h 27m

$385

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Fri 6/5

7:20 pm-8:00 am

2 stops15h 40m

Seattle/Tacoma Intl

Tue 6/9

3:33 pm-10:06 am

2 stops15h 33m

$388

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 5/28

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Sat 6/6

7:20 pm-7:47 am

2 stops9h 27m

$392

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 5/21

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Wed 5/27

2:55 pm-10:12 am

2 stops16h 17m

$405

Quickest round-trip

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Thu 6/4

12:15 pm-7:05 pm

1 stop9h 50m

Seattle/Tacoma Intl

Sat 6/6

8:00 am-6:42 pm

1 stop7h 42m

$412

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 5/19

6:55 pm-10:05 am

2 stops18h 10m

Seattle/Tacoma Intl

Fri 7/24

7:20 pm-6:20 pm

2 stops20h 00m

$423

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 5/19

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Sat 7/25

3:00 pm-6:20 pm

2 stops24h 20m

$434

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Tue 5/19

8:55 pm-10:05 am

2 stops16h 10m

Seattle/Tacoma Intl

Sun 7/26

7:20 pm-7:45 am

2 stops9h 25m

$436

TorontoSeattle

YTZ - SEA

YTZSEA

Toronto Island

Mon 6/1

3:35 pm-10:40 pm

2 stops10h 05m

Seattle/Tacoma Intl

Sat 6/6

7:20 pm-7:47 am

2 stops9h 27m

$451

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 $431. 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 $524.

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 $439 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $570. 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	8h 51m
Direct flights	None

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

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 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.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Redmond

Kent

Marysville

Puyallup

Tukwila

Lakewood

Cle Elum

Federal Way

Centralia

Fife

Shoreline

Westport

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.