How many flights depart from Toronto to Seattle on average per week?

As of July 2025, 27 flights take off from Toronto and land in Seattle each week. The most common flight departure day for this route is Thu, with 19% of weekly flights taking off on this day.

How long does it take to fly to Seattle?

Flight times from Toronto to Seattle vary, but if you’re flying out of Toronto and flying into Seattle (one of the most popular routes), then the duration is 7h 49m on average. Another popular route from Toronto to Seattle is flying from Hamilton to Seattle, which will take roughly 9h 58m. Keep in mind that layovers or delays could extend your travel time.

Which airlines fly to Seattle?

Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Seattle from Toronto according to our data. Alaska Airlines is the first choice among our users, with 38% of people opting to fly with this airline when travelling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

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

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

How many flights depart from Toronto to Seattle on average per day?

The number of flights available between Toronto and Seattle is 3 per day as of July 2025. The most frequent departure time is 8:00a.m., with 54% of daily flights leaving at noon.

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

Prices for flights from Toronto to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Toronto to Seattle/Tacoma Intl Airport?

As of July 2025, there are 6 operators available to choose from for flights from Toronto to Seattle/Tacoma Intl Airport.

How old do you have to be to fly from Toronto 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 to Seattle/Tacoma Intl Airport.

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

The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 152 Cheap Flights from Toronto to Seattle in 2025

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Find the cheapest flights from Toronto to Seattle

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

6:00 a.m. - 12:59 p.m.YKF-SEA

9h 59m1 stop

3:20 p.m. - 1:16 a.m.SEA-YKF

6h 56m1 stop

C$ 261WestJet

Find Deal

Sat, 25 Oct - Sun, 2 Nov

6:00 a.m. - 12:58 p.m.YKF-SEA

9h 58m1 stop

1:50 p.m. - 12:45 a.m.SEA-YKF

7h 55m1 stop

C$ 272WestJet

Find Deal

Fri, 29 Aug - Thu, 4 Sep

6:00 a.m. - 12:58 p.m.YKF-SEA

9h 58m1 stop

1:50 p.m. - 12:45 a.m.SEA-YKF

7h 55m1 stop

C$ 274WestJet

Find Deal

Fri, 29 Aug - Thu, 4 Sep

6:30 a.m. - 12:59 p.m.YYZ-SEA

9h 29m1 stop

8:40 a.m. - 12:31 a.m.SEA-YYZ

12h 51m2 stops

C$ 276WestJet

Find Deal

Wed, 17 Sep - Wed, 24 Sep

4:45 p.m. - 7:08 p.m.YYZ-SEA

5h 23mdirect

7:16 a.m. - 3:00 p.m.SEA-YYZ

4h 44mdirect

C$ 310Alaska Airlines

Find Deal

Wed, 24 Sep - Fri, 26 Sep

10:20 a.m. - 7:31 p.m.YTZ-SEA

12h 11m2 stops

5:30 a.m. - 8:41 p.m.SEA-YTZ

12h 11m2 stops

C$ 336Air Canada

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Wed, 3 Sep - Fri, 5 Sep

3:25 p.m. - 8:41 p.m.YTZ-SEA

8h 16m1 stop

7:20 a.m. - 7:46 p.m.SEA-YTZ

9h 26m1 stop

C$ 342Air Canada

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Wed, 6 Aug - Mon, 11 Aug

6:30 a.m. - 4:24 p.m.YYZ-SEA

12h 54m1 stop

7:04 p.m. - 9:19 a.m.SEA-YYZ

11h 15m2 stops

C$ 345United Airlines

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Thu, 25 Sep - Thu, 25 Sep

3:35 p.m. - 8:37 a.m.YTZ-SEA

20h 02m1 stop

5:54 p.m. - 12:20 p.m.SEA-YTZ

15h 26m1 stop

C$ 369

Find Deal

Wed, 6 Aug - Wed, 13 Aug

6:00 a.m. - 12:59 p.m.YKF-SEA

9h 59m1 stop

1:50 p.m. - 5:30 a.m.SEA-YKF

12h 40m2 stops

C$ 402

Find Deal

Fri, 5 Sep - Sat, 6 Sep

Air Canada flights from Toronto to Seattle

Our best Air Canada deals on Toronto to Seattle flight tickets

Air Canada

3 Sep

YTZ10:20 a.m.Toronto Island

12h 11m

2 stops

SEA7:31 p.m.Seattle/Tacoma Intl

5 Sep

SEA5:30 a.m.Seattle/Tacoma Intl

12h 11m

2 stops

YTZ8:41 p.m.Toronto Island

C$ 336

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Air Canada

6 Aug

YTZ3:25 p.m.Toronto Island

8h 16m

1 stop

SEA8:41 p.m.Seattle/Tacoma Intl

11 Aug

SEA7:20 a.m.Seattle/Tacoma Intl

9h 26m

1 stop

YTZ7:46 p.m.Toronto Island

C$ 342

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Air Canada

24 Jul

YTZ4:10 p.m.Toronto Island

9h 06m

2 stops

SEA10:16 p.m.Seattle/Tacoma Intl

3 Aug

SEA7:20 a.m.Seattle/Tacoma Intl

9h 26m

1 stop

YTZ7:46 p.m.Toronto Island

C$ 346

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WestJet flights from Toronto to Seattle

Our best WestJet deals on Toronto to Seattle flight tickets

WestJet

25 Oct

YKF6:00 a.m.Toronto Region of Waterloo Intl

9h 59m

1 stop

SEA12:59 p.m.Seattle/Tacoma Intl

2 Nov

SEA3:20 p.m.Seattle/Tacoma Intl

6h 56m

1 stop

YKF1:16 a.m.Toronto Region of Waterloo Intl

C$ 261

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WestJet

29 Aug

YKF6:00 a.m.Toronto Region of Waterloo Intl

9h 58m

1 stop

SEA12:58 p.m.Seattle/Tacoma Intl

4 Sep

SEA1:50 p.m.Seattle/Tacoma Intl

7h 55m

1 stop

YKF12:45 a.m.Toronto Region of Waterloo Intl

C$ 272

Find similar

WestJet

29 Aug

YKF6:00 a.m.Toronto Region of Waterloo Intl

9h 58m

1 stop

SEA12:58 p.m.Seattle/Tacoma Intl

4 Sep

SEA1:50 p.m.Seattle/Tacoma Intl

7h 55m

1 stop

YKF12:45 a.m.Toronto Region of Waterloo Intl

C$ 274

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How to get the cheapest flight ticket from Toronto 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

Other information

What is the typical price of a round-trip flight between Toronto and Seattle?

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 364.

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

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 555. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 717. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

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

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto to Seattle during this time can be as low as C$ 475. Flights in the morning are often more expensive with an average ticket price of C$ 796.

What is the cheapest Toronto to Seattle/Tacoma Intl flight route?

Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 496 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Toronto for as low as C$ 429 on momondo.

What cabin class options are available on Toronto to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Toronto to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Toronto to Seattle flights?

No. A direct flight is the cheapest option for a flight between Toronto to Seattle.

How have Toronto to Seattle flight prices changed over time?

As of July 2025, prices for Toronto to Seattle flights are approximately 27% cheaper when compared to flights at the same time last year.

When to book flights from Toronto to Seattle

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

Estimated round-trip price

Cheap Toronto to Seattle (YTO to SEA) flight deals and tips

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

Best price found	C$ 152
Fastest flight time	5h 23m
Direct flights	Every day
Airports in Seattle	1 airport

The best one-way flight to Seattle from Toronto in the past 72 hours is C$ 152. The best round-trip flight deal from Toronto to Seattle found on momondo in the last 72 hours is C$ 261.

The fastest flight from Toronto to Seattle takes 5h 23m

Direct flights go from Toronto to Seattle every day.

There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

Search flight deals

How far is Toronto to Seattle/Tacoma Intl by plane?
The distance between Toronto and Seattle/Tacoma Intl is about 3323.4 km. A reasonable flight in good conditions will take 5h 23m.
When did momondo last update prices for flights from Toronto to Seattle/Tacoma Intl Airport?
Prices for flights from Toronto to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Toronto to Seattle/Tacoma Intl Airport?
As of July 2025, there are 6 operators available to choose from for flights from Toronto to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Toronto 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 to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Toronto to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Toronto to Seattle is Airbus A220-300 (36.62% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (27.43%), Boeing 737-900 Passenger/BBJ3 (winglets) (15.31%), and Airbus A320-100/200 (4.39%).
What is the most popular airline from Toronto to Seattle?
Based on momondo bookings for flights between Toronto and Seattle, the leading airline is Alaska Airlines, making up 35% of the total bookings. Other popular airlines include Air Canada with 29%, WestJet with 26%, and United Airlines with 8%.

Best airlines flying from Toronto to Seattle

Compare and see reviews for airlines that fly from Toronto to Seattle with momondo

Airline	Rating	Free Cancellation	Price
WestJet	PriceFrom C$ 188	Free Cancellation	Rating 7.2 2,924 reviews	Search WestJet flights
Alaska Airlines	PriceFrom C$ 328	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom C$ 350	Free Cancellation	Rating 7.1 9,695 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 360	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
Delta	PriceFrom C$ 370	Free Cancellation	Rating 8.0 7,951 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom C$ 407	Free Cancellation	Rating 7.8 2,562 reviews	Search Hawaiian Airlines flights

Alaska Airlines Flights From Toronto to Seattle
Alaska Airlines operates around 1 flight from Toronto to Seattle every week. The average price of these flights found in the last 72 hours has been C$ 363, but momondo users have found Alaska Airlines deals from Toronto to Seattle from as low as C$ 240 round-trip. Alaska Airlines has been scored 8.0/10 in 10,000 reviews.
Hawaiian Airlines Flights From Toronto to Seattle
Hawaiian Airlines is also a popular choice for this route. Hawaiian Airlines flight deals for Toronto to Seattle start from as low as C$ 297 round-trip, depending on your selected dates, with average Hawaiian Airlines deals seen on momondo around C$ 336. Hawaiian Airlines operates 7 flights to Seattle from Toronto in an average week. Users have rated it 7.8/10 across 2,561 reviews.

Leavenworth

Marysville

Lynnwood

SeaTac

Tacoma

Olympia

Kirkland

Tukwila

Kent

Ellensburg

Redmond

Lakewood

Ocean Shores

Shoreline

Renton

Gig Harbor

Mukilteo

Cle Elum

Poulsbo

Puyallup

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Toronto to Seattle.

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

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Toronto and alert you when they change.

An easier way to manage your Seattle trip

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Cheap flights from Toronto to Seattle from C$ 152

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 to Seattle departing on 27/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Toronto to Seattle

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Air Canada flights from Toronto to Seattle

Our best Air Canada deals on Toronto to Seattle flight tickets

WestJet flights from Toronto to Seattle

Our best WestJet deals on Toronto to Seattle flight tickets

See travel insights to Seattle from

How to get the cheapest flight ticket from Toronto 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 typical price of a round-trip flight between Toronto and Seattle?

What is the cheapest month to fly to Seattle?

If you aren’t able to travel to Seattle during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 364.

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

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

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto to Seattle during this time can be as low as C$ 475. Flights in the morning are often more expensive with an average ticket price of C$ 796.

What is the cheapest Toronto to Seattle/Tacoma Intl flight route?

Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto - Seattle/Tacoma Intl flight prices

How far in advance should I book a flight to Seattle?

What cabin class options are available on Toronto to Seattle/Tacoma Intl flights?

There are 4 cabin classes available to choose from on Toronto to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Toronto to Seattle flights?

No. A direct flight is the cheapest option for a flight between Toronto to Seattle.

How have Toronto to Seattle flight prices changed over time?

As of July 2025, prices for Toronto to Seattle flights are approximately 27% cheaper when compared to flights at the same time last year.

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

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

Which airlines fly to Seattle?

How many flights depart from Toronto to Seattle on average per day?

The number of flights available between Toronto and Seattle is 3 per day as of July 2025. The most frequent departure time is 8:00a.m., with 54% of daily flights leaving at noon.

How many flights depart from Toronto to Seattle on average per week?

As of July 2025, 27 flights take off from Toronto and land in Seattle each week. The most common flight departure day for this route is Thu, with 19% of weekly flights taking off on this day.

How long does it take to fly to Seattle?

When to book flights from Toronto to Seattle

Cheap Toronto to Seattle (YTO to SEA) flight deals and tips

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

Best price found

Fastest flight time

Direct flights

Airports in Seattle

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

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

How many operators does momondo search for flights from Toronto to Seattle/Tacoma Intl Airport?

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

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

What is the most popular plane model from Toronto to Seattle?

What is the most popular airline from Toronto to Seattle?

Best airlines flying from Toronto to Seattle

Compare and see reviews for airlines that fly from Toronto to Seattle with momondo

Alaska Airlines Flights From Toronto to Seattle

Hawaiian Airlines Flights From Toronto to Seattle

Travelling to a place near Seattle?

Why use momondo?

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

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

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

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

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Washington