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Cheap flights from Seattle to Toronto from C$ 262

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Toronto departing on 5/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
10:30 a.m. - 11:59 p.m.
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 529WestJet
Fri, 28 Aug - Tue, 29 Sep
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
2:50 p.m. - 9:00 p.m.
YYZ
-
SEA
9h 10m
1 stop
C$ 529WestJet
Wed, 26 Aug - Wed, 2 Sep
Multiple Airlines Logo
7:06 p.m. - 9:55 p.m.
SEA
-
YYZ
23h 49m
2 stops
Multiple Airlines Logo
2:50 p.m. - 9:00 p.m.
YYZ
-
SEA
9h 10m
1 stop
C$ 529Multiple Airlines
Wed, 26 Aug - Sat, 5 Sep
WestJet Logo
10:30 a.m. - 11:59 p.m.
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
12:00 p.m. - 6:45 p.m.
YYZ
-
SEA
9h 45m
1 stop
C$ 531WestJet
Wed, 12 Aug - Sat, 15 Aug
Multiple Airlines Logo
8:00 a.m. - 3:45 p.m.
SEA
-
YYZ
4h 45mdirect
Multiple Airlines Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 546Multiple Airlines
Tue, 20 Oct - Wed, 21 Oct
Multiple Airlines Logo
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
Multiple Airlines Logo
3:30 p.m. - 10:05 a.m.
YYZ
-
SEA
21h 35m
3 stops
C$ 546Multiple Airlines
Tue, 8 Sep - Tue, 15 Sep
Alaska Airlines Logo
7:52 a.m. - 3:45 p.m.
SEA
-
YYZ
4h 53mdirect
Alaska Airlines Logo
4:55 p.m. - 7:13 p.m.
YYZ
-
SEA
5h 18mdirect
C$ 614Alaska Airlines
Sat, 19 Sep - Sat, 26 Sep
Alaska Airlines Logo
8:00 a.m. - 3:45 p.m.
SEA
-
YYZ
4h 45mdirect
Alaska Airlines Logo
4:55 p.m. - 7:26 p.m.
YYZ
-
SEA
5h 31mdirect
C$ 615Alaska Airlines
Tue, 20 Oct - Wed, 21 Oct
Air Canada Logo
8:00 a.m. - 3:41 p.m.
SEA
-
YYZ
4h 41mdirect
Air Canada Logo
6:45 p.m. - 9:04 p.m.
YYZ
-
SEA
5h 19mdirect
C$ 638Air Canada
Sat, 19 Sep - Sat, 26 Sep
Air Canada Logo
8:00 a.m. - 3:41 p.m.
SEA
-
YYZ
4h 41mdirect
Air Canada Logo
8:00 a.m. - 2:22 p.m.
YYZ
-
SEA
9h 22m
1 stop
C$ 641Air Canada
Sat, 19 Sep - Sat, 26 Sep

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WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
26 Aug
SEA10:30 a.m.Seattle/Tacoma Intl
9h 15m
1 stop
YYZ10:45 p.m.Toronto Pearson Intl
2 Sep
YYZ2:50 p.m.Toronto Pearson Intl
9h 10m
1 stop
SEA9:00 p.m.Seattle/Tacoma Intl
C$ 529
WestJet
12 Aug
SEA10:30 a.m.Seattle/Tacoma Intl
10h 29m
2 stops
YYZ11:59 p.m.Toronto Pearson Intl
15 Aug
YYZ12:00 p.m.Toronto Pearson Intl
9h 45m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 530
WestJet
22 Aug
SEA7:35 p.m.Seattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 a.m.Toronto Pearson Intl
6 Sep
YYZ1:30 p.m.Toronto Pearson Intl
8h 15m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 532

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Toronto Pearson Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 29 July 2026.
Use the filters below to find and compare flights from Seattle to Toronto Pearson Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 28/8

10:30 a.m.-11:59 p.m.

2 stops10h 29m

Toronto Pearson Intl

Tue 29/9

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

1 stop8h 15m

C$ 529

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 26/8

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

1 stop9h 15m

Toronto Pearson Intl

Wed 2/9

2:50 p.m.-9:00 p.m.

1 stop9h 10m

C$ 529

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 26/8

7:06 p.m.-9:55 p.m.

2 stops23h 49m

Toronto Pearson Intl

Sat 5/9

2:50 p.m.-9:00 p.m.

1 stop9h 10m

C$ 529

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Wed 12/8

10:30 a.m.-11:59 p.m.

2 stops10h 29m

Toronto Pearson Intl

Sat 15/8

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

1 stop9h 45m

C$ 530

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 20/10

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Wed 21/10

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

1 stop8h 15m

C$ 546

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 8/9

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

1 stop7h 10m

Toronto Pearson Intl

Tue 15/9

3:30 p.m.-10:05 a.m.

3 stops21h 35m

C$ 546

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 19/9

7:52 a.m.-3:45 p.m.

Nonstop4h 53m

Toronto Pearson Intl

Sat 26/9

4:55 p.m.-7:13 p.m.

Nonstop5h 18m

C$ 614

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 20/10

8:00 a.m.-3:45 p.m.

Nonstop4h 45m

Toronto Pearson Intl

Wed 21/10

4:55 p.m.-7:26 p.m.

Nonstop5h 31m

C$ 615
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 19/9

8:00 a.m.-3:41 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Sat 26/9

6:45 p.m.-9:04 p.m.

Nonstop5h 19m

C$ 638

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 19/9

8:00 a.m.-3:41 p.m.

Nonstop4h 41m

Toronto Pearson Intl

Sat 26/9

8:00 a.m.-2:22 p.m.

1 stop9h 22m

C$ 641

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Seattle to Toronto Pearson Intl Airport

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 Seattle and Toronto Pearson Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 549 to C$ 1,044.
The lowest price recently found on this route was C$ 529.

What is the cheapest month to fly to Toronto Pearson Intl Airport?

If you aren’t able to travel during the month of January, then book flights to Toronto Pearson Intl Airport from Seattle during February instead. Flights to Toronto Pearson Intl Airport in February, while not as cheap as those in January, still average around C$ 389.

What is the cheapest day to depart on your flight to Toronto Pearson Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Toronto Pearson Intl Airport. Tickets to fly out on this day can be as low as C$ 761. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Seattle to Toronto Pearson Intl Airport for around C$ 994.

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

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

How far in advance should I book a flight from Seattle to Toronto Pearson Intl Airport?

You are more likely to see cheaper flights to Toronto Pearson Intl Airport from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto Pearson Intl Airport for around C$ 562 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto Pearson Intl Airport from Seattle for as low as C$ 449 on momondo.

What cabin class options are available on Seattle to Toronto Pearson Intl Airport flights?

There are 3 cabin classes available to choose from on Seattle to Toronto Pearson Intl Airport 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 Seattle to Toronto Pearson Intl Airport flights?

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

How have Seattle to Toronto Pearson Intl Airport flight prices changed over time?

As of July 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 43% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Toronto Pearson Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Toronto Pearson Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Toronto Pearson Intl Airport (SEA to YYZ) flight deals and tips

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

Best price found

C$ 444

Fastest flight time

4h 32m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 444. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 913.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 32m
Direct flights go from Seattle to Toronto Pearson Intl Airport every day.
Search flight deals

Frequently asked questions about flying from Seattle to Toronto Pearson Intl Airport

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

    The distance between Seattle/Tacoma Intl and Toronto Pearson Intl is about 3304.6 km. 4h 32m is a normal flight duration for this route.

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

    Prices for flights from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport are updated daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Toronto Pearson Intl Airport.

  • What documentation or ID do you need to fly to Toronto Pearson Intl Airport?

    The travel and health documents required for your trip to Toronto Pearson 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 Toronto Pearson 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 Seattle to Toronto Pearson Intl Airport?

  • What is the most popular airline from Seattle to Toronto Pearson Intl Airport?

Best airlines flying from Seattle to Toronto Pearson Intl Airport

Compare and see reviews for airlines that fly from Seattle to Toronto Pearson Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 264Free CancellationRating
7.1
11,404 reviews
Search Air Canada flights
Alaska AirlinesPriceFrom C$ 287Free CancellationRating
7.9
12,727 reviews
Search Alaska Airlines flights
WestJetPriceFrom C$ 291Free CancellationRating
7.2
3,415 reviews
Search WestJet flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 8 flights from Seattle to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been C$ 788, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 287 round-trip. Alaska Airlines has been scored 7.9/10 in 12,727 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 11,404 reviews) operates around 7 flights from Seattle to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 549, with deals from around C$ 264 rare but found on momondo. Referenced prices are for round-trip Seattle to Toronto Pearson Intl Airport flight searches in the last 72 hours.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Brampton
Collingwood
Oshawa
Markham
Vaughan
Guelph
Barrie
Kitchener
Niagara-on-the-Lake
Waterloo
Burlington
Muskoka
Cambridge
Oakville
Richmond Hill
Pickering
Peterborough
Orillia

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Toronto. momondo saves you time and could save you money on your trip.

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

Flights from Seattle to Toronto 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 Seattle to Toronto?

Once all potential Seattle to Toronto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes. momondo can track prices for Seattle to Toronto 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.

An easier way to manage your Toronto Pearson Intl Airport trip

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