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Cheap flights from Seattle to Toronto from C$ 220

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 6/9. 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
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 515WestJet
Fri, 2 Oct - Wed, 7 Oct
WestJet Logo
7:00 a.m. - 5:10 p.m.
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 516WestJet
Thu, 2 Jul - Tue, 14 Jul
WestJet Logo
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 522WestJet
Tue, 7 Jul - Tue, 14 Jul
WestJet Logo
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 526WestJet
Thu, 24 Sep - Mon, 28 Sep
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
3:50 p.m. - 9:00 p.m.
YYZ
-
SEA
8h 10m
1 stop
C$ 527WestJet
Tue, 30 Jun - Wed, 8 Jul
WestJet Logo
7:00 a.m. - 9:10 p.m.
SEA
-
YYZ
11h 10m
2 stops
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 528WestJet
Sun, 23 Aug - Sat, 5 Sep
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
12:00 p.m. - 6:45 p.m.
YYZ
-
SEA
9h 45m
2 stops
C$ 534WestJet
Sat, 29 Aug - Thu, 3 Sep
WestJet Logo
10:30 a.m. - 11:59 p.m.
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
3:50 p.m. - 9:00 p.m.
YYZ
-
SEA
8h 10m
1 stop
C$ 535WestJet
Tue, 30 Jun - Wed, 8 Jul
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
C$ 538WestJet
Sat, 29 Aug - Fri, 4 Sep
WestJet Logo
7:00 a.m. - 9:10 p.m.
SEA
-
YYZ
11h 10m
2 stops
WestJet Logo
3:50 p.m. - 9:00 p.m.
YYZ
-
SEA
8h 10m
1 stop
C$ 540WestJet
Thu, 27 Aug - Mon, 31 Aug

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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
2 Oct
SEA7:35 p.m.Seattle/Tacoma Intl
7h 10m
1 stop
YYZ5:45 a.m.Toronto Pearson Intl
7 Oct
YYZ1:30 p.m.Toronto Pearson Intl
8h 15m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 515
WestJet
2 Jul
SEA7:00 a.m.Seattle/Tacoma Intl
7h 10m
1 stop
YYZ5:10 p.m.Toronto Pearson Intl
14 Jul
YYZ1:30 p.m.Toronto Pearson Intl
8h 15m
1 stop
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 516
WestJet
9 Sep
SEA7:35 p.m.Seattle/Tacoma Intl
7h 10m
1 stop
YYZ5:45 a.m.Toronto Pearson Intl
18 Nov
YYZ7:45 a.m.Toronto Pearson Intl
8h 35m
1 stop
SEA1:20 p.m.Seattle/Tacoma Intl
C$ 517

Air Canada flights from Seattle to Toronto Pearson Intl Airport

Our best Air Canada deals on Seattle to Toronto Pearson Intl Airport flight tickets
Air Canada
26 Aug
SEA3:00 p.m.Seattle/Tacoma Intl
7h 35m
1 stop
YYZ1:35 a.m.Toronto Pearson Intl
27 Aug
YYZ4:20 p.m.Toronto Pearson Intl
9h 22m
1 stop
SEA10:42 p.m.Seattle/Tacoma Intl
C$ 544
Air Canada
21 Jun
SEA5:45 a.m.Seattle/Tacoma Intl
9h 05m
1 stop
YYZ5:50 p.m.Toronto Pearson Intl
28 Jun
YYZ10:00 a.m.Toronto Pearson Intl
11h 32m
1 stop
SEA6:32 p.m.Seattle/Tacoma Intl
C$ 784

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 10 June 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
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 2/10

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

1 stop7h 10m

Toronto Pearson Intl

Wed 7/10

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

1 stop8h 15m

C$ 515

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 2/7

7:00 a.m.-5:10 p.m.

1 stop7h 10m

Toronto Pearson Intl

Tue 14/7

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

1 stop8h 15m

C$ 516

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 7/7

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

1 stop7h 10m

Toronto Pearson Intl

Tue 14/7

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

1 stop8h 15m

C$ 522

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 24/9

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

1 stop7h 10m

Toronto Pearson Intl

Mon 28/9

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

1 stop8h 15m

C$ 526

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 30/6

7:35 p.m.-6:55 a.m.

1 stop8h 20m

Toronto Pearson Intl

Wed 8/7

3:50 p.m.-9:00 p.m.

1 stop8h 10m

C$ 527

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 23/8

7:00 a.m.-9:10 p.m.

2 stops11h 10m

Toronto Pearson Intl

Sat 5/9

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

1 stop8h 15m

C$ 528

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 29/8

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

1 stop9h 15m

Toronto Pearson Intl

Thu 3/9

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

2 stops9h 45m

C$ 534

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 30/6

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

2 stops10h 29m

Toronto Pearson Intl

Wed 8/7

3:50 p.m.-9:00 p.m.

1 stop8h 10m

C$ 535

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 29/8

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

1 stop9h 15m

Toronto Pearson Intl

Fri 4/9

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

1 stop8h 15m

C$ 538

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 27/8

7:00 a.m.-9:10 p.m.

2 stops11h 10m

Toronto Pearson Intl

Mon 31/8

3:50 p.m.-9:00 p.m.

1 stop8h 10m

C$ 540

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Toronto from

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?

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$ 385.

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$ 542. 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$ 983.

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$ 547 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$ 390 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?

You could potentially save up to 16% on your flight if you consider stops on a Seattle to Toronto Pearson Intl Airport flight.

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

As of June 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 42% 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$ 339

Fastest flight time

4h 40m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 339. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 893.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 40m
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 40m 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
WestJetPriceFrom C$ 288Free CancellationRating
7.2
3,356 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 308Free CancellationRating
7.9
12,478 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom C$ 368Free CancellationRating
7.1
11,155 reviews
Search Air Canada flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 6 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$ 791, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 308 round-trip. Alaska Airlines has been scored 7.9/10 in 12,478 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 11,155 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$ 461, with deals from around C$ 368 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
Muskoka
Burlington
Cambridge
Waterloo
Orillia
Oakville
Pickering
Peterborough
Brantford

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.

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