Which airport is the most popular layover for flights between Toronto and Seattle?

Calgary (YYC) was the most common stop: 59% of momondo users choosing one-stop flights on this route connected there.

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 8h 09m on average. Another popular route from Toronto to Seattle is flying from Hamilton to Seattle, which will take roughly 9h 16m. Keep in mind that layovers or delays could extend your travel time.

Which layover airport has the shortest connection time from Toronto to Seattle?

Chicago (ORD) has the shortest average layover time for this route: 0h 51m.

How often are flights from Toronto to Seattle delayed?

Historically, on average around 25% of flights between Toronto and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 164 minutes.

What is the most punctual flight time for Toronto to Seattle flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

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

As of February 2026, 40 flights take off from Toronto and land in Seattle each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.

Which layover airport has the shortest travel time from Toronto to Seattle?

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 7h 18m.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which layover airport offers the lowest fares from Toronto to Seattle?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 385.

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

The number of flights available between Toronto and Seattle is 5 per day as of February 2026. The most frequent departure time is 4:00p.m., with 63% of daily flights leaving in the afternoon.

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 39% 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.

Which airline has the best punctuality record on Toronto to Seattle flights?

According to our data, Alaska Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

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

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

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 February 2026, 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$ 183 Cheap Flights from Toronto to Seattle in 2026

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One-way

Last minute

Direct

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4:45 p.m. - 7:15 p.m.

YYZ

SEA

5h 30mdirect

7:55 a.m. - 3:35 p.m.

SEA

YYZ

4h 40mdirect

C$ 292Alaska Airlines

Wed, 18 Mar - Wed, 25 Mar

4:45 p.m. - 7:18 p.m.

YYZ

SEA

5h 33mdirect

7:55 a.m. - 3:35 p.m.

SEA

YYZ

4h 40mdirect

C$ 294Alaska Airlines

Tue, 3 Mar - Tue, 10 Mar

7:45 a.m. - 2:19 p.m.

YYZ

SEA

9h 34m

1 stop

10:30 a.m. - 10:45 p.m.

SEA

YYZ

9h 15m

1 stop

C$ 298WestJet

Wed, 22 Apr - Tue, 28 Apr

7:50 p.m. - 10:16 p.m.

YYZ

SEA

5h 26mdirect

8:00 p.m. - 6:47 a.m.

SEA

YYZ

7h 47m

1 stop

C$ 302Air Canada

Tue, 3 Mar - Tue, 10 Mar

4:45 p.m. - 7:18 p.m.

YYZ

SEA

5h 33mdirect

7:55 a.m. - 3:35 p.m.

SEA

YYZ

4h 40mdirect

C$ 306Alaska Airlines

Wed, 11 Mar - Sun, 15 Mar

5:55 p.m. - 10:57 p.m.

YYZ

SEA

8h 02m

1 stop

5:40 a.m. - 4:09 p.m.

SEA

YYZ

7h 29m

1 stop

C$ 309Air Canada

Tue, 24 Feb - Tue, 3 Mar

1:30 p.m. - 6:45 p.m.

YYZ

SEA

8h 15m

1 stop

7:35 p.m. - 5:45 a.m.

SEA

YYZ

7h 10m

1 stop

C$ 310WestJet

Fri, 8 May - Sat, 16 May

12:00 p.m. - 6:45 p.m.

YYZ

SEA

9h 45m

2 stops

7:35 p.m. - 5:45 a.m.

SEA

YYZ

7h 10m

1 stop

C$ 311WestJet

Thu, 4 Jun - Mon, 8 Jun

5:55 p.m. - 10:57 p.m.

YYZ

SEA

8h 02m

1 stop

8:00 a.m. - 3:43 p.m.

SEA

YYZ

4h 43mdirect

C$ 313Air Canada

Tue, 3 Mar - Fri, 6 Mar

7:05 a.m. - 10:25 a.m.

YKF

SEA

30h 20m

2 stops

3:10 p.m. - 5:29 a.m.

SEA

YKF

11h 19m

1 stop

C$ 587Multiple Airlines

Sun, 1 Mar - Sun, 8 Mar

United Airlines flights from Toronto to Seattle

Our best United Airlines deals on Toronto to Seattle flight tickets

United Airlines

3 Mar

YYZ3:30 p.m.Toronto Pearson Intl

10h 13m

1 stop

SEA10:43 p.m.Seattle/Tacoma Intl

10 Mar

SEA11:59 p.m.Seattle/Tacoma Intl

6h 59m

1 stop

YYZ9:58 a.m.Toronto Pearson Intl

C$ 336

United Airlines

22 Apr

YYZ12:45 p.m.Toronto Pearson Intl

11h 08m

1 stop

SEA8:53 p.m.Seattle/Tacoma Intl

28 Apr

SEA8:55 a.m.Seattle/Tacoma Intl

12h 04m

2 stops

YYZ11:59 p.m.Toronto Pearson Intl

C$ 337

United Airlines

9 Apr

YYZ1:00 p.m.Toronto Pearson Intl

14h 19m

1 stop

SEA12:19 a.m.Seattle/Tacoma Intl

14 Apr

SEA7:00 a.m.Seattle/Tacoma Intl

9h 37m

1 stop

YYZ7:37 p.m.Toronto Pearson Intl

C$ 347

Alaska Airlines flights from Toronto to Seattle

Our best Alaska Airlines deals on Toronto to Seattle flight tickets

Alaska Airlines

25 Feb

YYZ4:45 p.m.Toronto Pearson Intl

5h 33m

SEA7:18 p.m.Seattle/Tacoma Intl

25 Mar

SEA7:55 a.m.Seattle/Tacoma Intl

4h 40m

YYZ3:35 p.m.Toronto Pearson Intl

C$ 292

Alaska Airlines

3 Mar

YYZ4:45 p.m.Toronto Pearson Intl

5h 33m

SEA7:18 p.m.Seattle/Tacoma Intl

10 Mar

SEA7:55 a.m.Seattle/Tacoma Intl

4h 40m

YYZ3:35 p.m.Toronto Pearson Intl

C$ 294

Alaska Airlines

11 Mar

YYZ4:45 p.m.Toronto Pearson Intl

5h 33m

SEA7:18 p.m.Seattle/Tacoma Intl

15 Mar

SEA7:55 a.m.Seattle/Tacoma Intl

4h 40m

YYZ3:35 p.m.Toronto Pearson Intl

C$ 303

Fly from

Fly to

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 18/3

4:45 p.m.-7:15 p.m.

Nonstop5h 30m

Seattle/Tacoma Intl

Wed 25/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 292

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 3/3

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

Seattle/Tacoma Intl

Tue 10/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 294

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 22/4

7:45 a.m.-2:19 p.m.

1 stop9h 34m

Seattle/Tacoma Intl

Tue 28/4

10:30 a.m.-10:45 p.m.

1 stop9h 15m

C$ 298

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 3/3

7:50 p.m.-10:16 p.m.

Nonstop5h 26m

Seattle/Tacoma Intl

Tue 10/3

8:00 p.m.-6:47 a.m.

1 stop7h 47m

C$ 302

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 11/3

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

Seattle/Tacoma Intl

Sun 15/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 306

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 24/2

5:55 p.m.-10:57 p.m.

1 stop8h 02m

Seattle/Tacoma Intl

Tue 3/3

5:40 a.m.-4:09 p.m.

1 stop7h 29m

C$ 309

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 8/5

1:30 p.m.-6:45 p.m.

1 stop8h 15m

Seattle/Tacoma Intl

Sat 16/5

7:35 p.m.-5:45 a.m.

1 stop7h 10m

C$ 310

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 4/6

12:00 p.m.-6:45 p.m.

2 stops9h 45m

Seattle/Tacoma Intl

Mon 8/6

7:35 p.m.-5:45 a.m.

1 stop7h 10m

C$ 311

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 3/3

5:55 p.m.-10:57 p.m.

1 stop8h 02m

Seattle/Tacoma Intl

Fri 6/3

8:00 a.m.-3:43 p.m.

Nonstop4h 43m

C$ 313

TorontoSeattle

YKF - SEA

YKFSEA

Toronto Region of Waterloo Intl

Sun 1/3

7:05 a.m.-10:25 a.m.

2 stops30h 20m

Seattle/Tacoma Intl

Sun 8/3

3:10 p.m.-5:29 a.m.

1 stop11h 19m

C$ 587

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Showing 1-10 of 20 resultsSorted by cheapest first

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

Delays

Layovers

Other information

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 March is also cheap. Prices for this month can be found on momondo for an average of C$ 399.

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$ 545. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around C$ 854. 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$ 493. Flights in the morning are often more expensive with an average ticket price of C$ 857.

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$ 474 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$ 400 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 February 2026, prices for Toronto to Seattle flights are approximately 16% 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$ 275
Fastest flight time	5h 20m
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$ 275. The best round-trip flight deal from Toronto to Seattle found on momondo in the last 72 hours is C$ 350.

The fastest flight from Toronto to Seattle takes 5h 20m

Direct flights go from Toronto to Seattle every day.

There is 1 airport in Seattle. From Toronto there are direct flights to 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 20m.
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 February 2026, 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 (58.25% of total bookings). The next most popular plane models are Airbus A320-100/200 (6.34%), Boeing 737 MAX 8 (5.79%), and Boeing 777-300ER (5.68%).
What is the most popular airline from Toronto to Seattle?
Based on momondo bookings for flights between Toronto and Seattle, the leading airline is Air Canada, making up 31% of the total bookings. Other popular airlines include Alaska Airlines with 30%, WestJet with 26%, and United Airlines with 9%.

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$ 126	Free Cancellation	Rating 7.2 3,254 reviews	Search WestJet flights
Delta	PriceFrom C$ 251	Free Cancellation	Rating 7.9 8,136 reviews	Search Delta flights
Alaska Airlines	PriceFrom C$ 271	Free Cancellation	Rating 8.0 11,832 reviews	Search Alaska Airlines flights
Air Canada	PriceFrom C$ 323	Free Cancellation	Rating 7.1 10,680 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 342	Free Cancellation	Rating 7.4 9,232 reviews	Search United Airlines flights
Hawaiian Airlines	PriceFrom C$ 406	Free Cancellation	Rating 7.8 2,830 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$ 465, but momondo users have found Alaska Airlines deals from Toronto to Seattle from as low as C$ 271 round-trip. Alaska Airlines has been scored 8.0/10 in 11,832 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$ 406 round-trip, depending on your selected dates, with average Hawaiian Airlines deals seen on momondo around C$ 458. Hawaiian Airlines operates 5 flights to Seattle from Toronto in an average week. Users have rated it 7.8/10 across 2,830 reviews.

Lynnwood

Leavenworth

Marysville

SeaTac

Tacoma

Redmond

Kirkland

Tukwila

Olympia

Ocean Shores

Bainbridge Island

Ellensburg

Gig Harbor

Renton

Mukilteo

Cle Elum

Centralia

Puyallup

Kent

Edmonds

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.

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Cheap flights from Toronto to Seattle from C$ 183

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 17/3. 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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How to get the cheapest flight ticket from Toronto to 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 March is also cheap. Prices for this month can be found on momondo for an average of C$ 399.

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$ 493. Flights in the morning are often more expensive with an average ticket price of C$ 857.

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 February 2026, prices for Toronto to Seattle flights are approximately 16% cheaper when compared to flights at the same time last year.

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

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

Which airlines fly to Seattle?

How often are flights from Toronto to Seattle delayed?

Historically, on average around 25% of flights between Toronto and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 164 minutes.

What is the most punctual flight time for Toronto to Seattle flights?

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Which airline has the best punctuality record on Toronto to Seattle flights?

According to our data, Alaska Airlines has had the least delays on this route over the last 12 months, with about 13% of their flights experiencing any sort of delay.

Which airport is the most popular layover for flights between Toronto and Seattle?

Calgary (YYC) was the most common stop: 59% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Toronto to Seattle?

Flights via Calgary (YYC) offer the lowest average round-trip price of C$ 385.

Which layover airport has the shortest travel time from Toronto to Seattle?

Flights connecting via Minneapolis (MSP) have the shortest average one-way travel time: 7h 18m.

Which layover airport has the shortest connection time from Toronto to Seattle?

Chicago (ORD) has the shortest average layover time for this route: 0h 51m.

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

The number of flights available between Toronto and Seattle is 5 per day as of February 2026. The most frequent departure time is 4:00p.m., with 63% of daily flights leaving in the afternoon.

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

As of February 2026, 40 flights take off from Toronto and land in Seattle each week. The most common flight departure day for this route is Mon, with 15% 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?