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Cheap flights from Seattle to Toronto from C$ 134

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 27/4. 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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Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
10:20 a.m. - 11:46 p.m.
SEA
-
YYZ
10h 26m
2 stops
Air Canada Logo
12:30 a.m. - 9:50 a.m.
YYZ
-
SEA
12h 20m
2 stops
C$ 300Air Canada
Sat, 25 Apr - Fri, 1 May
Air Canada Logo
7:20 p.m. - 8:10 a.m.
SEA
-
YYZ
9h 50m
2 stops
Air Canada Logo
12:30 a.m. - 9:50 a.m.
YYZ
-
SEA
12h 20m
2 stops
C$ 301Air Canada
Sat, 2 May - Fri, 8 May
Air Canada Logo
8:00 a.m. - 3:54 p.m.
SEA
-
YYZ
4h 54mdirect
Air Canada Logo
6:45 p.m. - 9:08 p.m.
YYZ
-
SEA
5h 23mdirect
C$ 305Air Canada
Sat, 25 Apr - Sat, 2 May
Air Canada Logo
8:00 a.m. - 3:50 p.m.
SEA
-
YYZ
4h 50mdirect
Air Canada Logo
6:45 p.m. - 9:08 p.m.
YYZ
-
SEA
5h 23mdirect
C$ 316Air Canada
Sat, 2 May - Sat, 9 May
Air Canada Logo
8:00 a.m. - 3:54 p.m.
SEA
-
YYZ
4h 54mdirect
Air Canada Logo
8:55 p.m. - 9:38 a.m.
YYZ
-
SEA
15h 43m
1 stop
C$ 345Air Canada
Thu, 23 Apr - Tue, 28 Apr
Air Canada Logo
7:20 p.m. - 9:03 a.m.
SEA
-
YYZ
10h 43m
1 stop
Air Canada Logo
6:45 p.m. - 9:08 p.m.
YYZ
-
SEA
5h 23mdirect
C$ 346Air Canada
Sat, 2 May - Sat, 9 May
Air Canada Logo
8:00 p.m. - 1:05 p.m.
SEA
-
YYZ
14h 05m
1 stop
Air Canada Logo
8:55 p.m. - 9:38 a.m.
YYZ
-
SEA
15h 43m
1 stop
C$ 357Air Canada
Sun, 19 Apr - Tue, 28 Apr
Air Canada Logo
8:00 p.m. - 1:05 p.m.
SEA
-
YYZ
14h 05m
1 stop
Air Canada Logo
7:30 p.m. - 9:53 p.m.
YYZ
-
SEA
5h 23mdirect
C$ 363Air Canada
Sun, 19 Apr - Tue, 28 Apr
Air Canada Logo
2:55 p.m. - 1:38 a.m.
SEA
-
YYZ
7h 43m
1 stop
Air Canada Logo
6:45 p.m. - 9:08 p.m.
YYZ
-
SEA
5h 23mdirect
C$ 365Air Canada
Tue, 12 May - Sun, 17 May
Air Canada Logo
8:00 a.m. - 3:54 p.m.
SEA
-
YYZ
4h 54mdirect
Air Canada Logo
12:30 a.m. - 9:50 a.m.
YYZ
-
SEA
12h 20m
2 stops
C$ 367Air Canada
Sat, 25 Apr - Fri, 1 May

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
17 Apr
SEA3:10 p.m.Seattle/Tacoma Intl
11h 48m
2 stops
YYZ5:58 a.m.Toronto Pearson Intl
19 Apr
YYZ7:45 a.m.Toronto Pearson Intl
9h 34m
1 stop
SEA2:19 p.m.Seattle/Tacoma Intl
C$ 415
WestJet
28 Mar
SEA11:55 a.m.Seattle/Tacoma Intl
9h 31m
2 stops
YYZ12:26 a.m.Toronto Pearson Intl
30 Mar
YYZ6:30 a.m.Toronto Pearson Intl
10h 49m
1 stop
SEA2:19 p.m.Seattle/Tacoma Intl
C$ 816

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
25 Apr
SEA10:20 a.m.Seattle/Tacoma Intl
10h 26m
2 stops
YYZ11:46 p.m.Toronto Pearson Intl
1 May
YYZ12:30 a.m.Toronto Pearson Intl
12h 20m
2 stops
SEA9:50 a.m.Seattle/Tacoma Intl
C$ 300
Air Canada
2 May
SEA7:20 p.m.Seattle/Tacoma Intl
9h 50m
2 stops
YYZ8:10 a.m.Toronto Pearson Intl
8 May
YYZ12:30 a.m.Toronto Pearson Intl
12h 20m
2 stops
SEA9:50 a.m.Seattle/Tacoma Intl
C$ 301
Air Canada
25 Apr
SEA8:00 a.m.Seattle/Tacoma Intl
4h 54m
YYZ3:54 p.m.Toronto Pearson Intl
2 May
YYZ6:45 p.m.Toronto Pearson Intl
5h 23m
SEA9:08 p.m.Seattle/Tacoma Intl
C$ 305

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 14 March 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

Sat 25/4

10:20 a.m.-11:46 p.m.

2 stops10h 26m

Toronto Pearson Intl

Fri 1/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 300

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 2/5

7:20 p.m.-8:10 a.m.

2 stops9h 50m

Toronto Pearson Intl

Fri 8/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 301

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Sat 2/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 305
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 2/5

8:00 a.m.-3:50 p.m.

Nonstop4h 50m

Toronto Pearson Intl

Sat 9/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 316

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 23/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Tue 28/4

8:55 p.m.-9:38 a.m.

1 stop15h 43m

C$ 345

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 2/5

7:20 p.m.-9:03 a.m.

1 stop10h 43m

Toronto Pearson Intl

Sat 9/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 346

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 19/4

8:00 p.m.-1:05 p.m.

1 stop14h 05m

Toronto Pearson Intl

Tue 28/4

8:55 p.m.-9:38 a.m.

1 stop15h 43m

C$ 357

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sun 19/4

8:00 p.m.-1:05 p.m.

1 stop14h 05m

Toronto Pearson Intl

Tue 28/4

7:30 p.m.-9:53 p.m.

Nonstop5h 23m

C$ 363

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Tue 12/5

2:55 p.m.-1:38 a.m.

1 stop7h 43m

Toronto Pearson Intl

Sun 17/5

6:45 p.m.-9:08 p.m.

Nonstop5h 23m

C$ 365

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 25/4

8:00 a.m.-3:54 p.m.

Nonstop4h 54m

Toronto Pearson Intl

Fri 1/5

12:30 a.m.-9:50 a.m.

2 stops12h 20m

C$ 367

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$ 378.

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

Our data shows that Wednesday 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$ 531. 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$ 934.

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 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$ 520 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$ 257 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Toronto Pearson 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 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 March 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 37% 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$ 136

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$ 136. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 887.
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

  • 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$ 282Free CancellationRating
7.2
3,295 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 302Free CancellationRating
8.0
12,043 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom C$ 361Free CancellationRating
7.1
10,800 reviews
Search Air Canada flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 5 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$ 697, but momondo users have found Alaska Airlines deals from Seattle to Toronto Pearson Intl Airport from as low as C$ 302 round-trip. Alaska Airlines has been scored 8.0/10 in 12,042 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 10,800 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$ 457, with deals from around C$ 361 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
Guelph
Markham
Vaughan
Barrie
Muskoka
Kitchener
Niagara-on-the-Lake
Burlington
Orillia
Brantford
Cambridge
Oakville
Waterloo
Pickering
Peterborough

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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