Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Toronto from C$ 151

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 14/5. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:00 a.m. - 9:10 p.m.
SEA
-
YYZ
11h 10m
2 stops
WestJet Logo
12:00 p.m. - 9:00 p.m.
YYZ
-
SEA
12h 00m
2 stops
C$ 374WestJet
Sun, 2 Aug - Mon, 10 Aug
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
8:00 p.m. - 9:40 a.m.
YYZ
-
SEA
16h 40m
1 stop
C$ 375WestJet
Thu, 23 Jul - Sat, 1 Aug
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
6:10 a.m. - 6:45 p.m.
YYZ
-
SEA
15h 35m
2 stops
C$ 376WestJet
Thu, 14 May - Sun, 17 May
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
10:25 p.m. - 9:40 a.m.
YYZ
-
SEA
14h 15m
1 stop
C$ 378WestJet
Mon, 11 May - Sat, 16 May
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
WestJet Logo
5:20 p.m. - 6:45 p.m.
YYZ
-
SEA
28h 25m
2 stops
C$ 379WestJet
Mon, 11 May - Fri, 15 May
WestJet Logo
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
WestJet Logo
9:00 a.m. - 6:45 p.m.
YYZ
-
SEA
12h 45m
1 stop
C$ 380WestJet
Sat, 30 May - Sun, 7 Jun
WestJet Logo
10:30 a.m. - 11:59 p.m.
SEA
-
YYZ
10h 29m
2 stops
WestJet Logo
9:00 a.m. - 6:45 p.m.
YYZ
-
SEA
12h 45m
1 stop
C$ 382WestJet
Sat, 30 May - Sun, 7 Jun
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
2 stops
C$ 383WestJet
Mon, 13 Jul - Thu, 23 Jul
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
2 stops
C$ 384WestJet
Mon, 10 Aug - Thu, 13 Aug
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
WestJet Logo
10:00 a.m. - 6:45 p.m.
YYZ
-
SEA
11h 45m
1 stop
C$ 386WestJet
Mon, 11 May - Sun, 17 May

WestJet flights from Seattle to Toronto Pearson Intl Airport

Our best WestJet deals on Seattle to Toronto Pearson Intl Airport flight tickets
WestJet
2 Aug
SEA7:00 a.m.Seattle/Tacoma Intl
11h 10m
2 stops
YYZ9:10 p.m.Toronto Pearson Intl
10 Aug
YYZ12:00 p.m.Toronto Pearson Intl
12h 00m
2 stops
SEA9:00 p.m.Seattle/Tacoma Intl
C$ 374
WestJet
23 Jul
SEA7:35 p.m.Seattle/Tacoma Intl
8h 20m
1 stop
YYZ6:55 a.m.Toronto Pearson Intl
1 Aug
YYZ8:00 p.m.Toronto Pearson Intl
16h 40m
1 stop
SEA9:40 a.m.Seattle/Tacoma Intl
C$ 375
WestJet
14 May
SEA10:30 a.m.Seattle/Tacoma Intl
9h 15m
1 stop
YYZ10:45 p.m.Toronto Pearson Intl
17 May
YYZ6:10 a.m.Toronto Pearson Intl
15h 35m
2 stops
SEA6:45 p.m.Seattle/Tacoma Intl
C$ 376

Delta flights from Seattle to Toronto Pearson Intl Airport

Our best Delta deals on Seattle to Toronto Pearson Intl Airport flight tickets
Delta
14 May
SEA6:00 a.m.Seattle/Tacoma Intl
12h 55m
1 stop
YYZ9:55 p.m.Toronto Pearson Intl
18 May
YYZ12:09 p.m.Toronto Pearson Intl
11h 32m
1 stop
SEA8:41 p.m.Seattle/Tacoma Intl
C$ 460
Delta
11 May
SEA7:30 a.m.Seattle/Tacoma Intl
11h 25m
1 stop
YYZ9:55 p.m.Toronto Pearson Intl
14 May
YYZ6:10 a.m.Toronto Pearson Intl
11h 40m
1 stop
SEA2:50 p.m.Seattle/Tacoma Intl
C$ 519

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 30 April 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

Sun 2/8

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

2 stops11h 10m

Toronto Pearson Intl

Mon 10/8

12:00 p.m.-9:00 p.m.

2 stops12h 00m

C$ 374

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 23/7

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

1 stop8h 20m

Toronto Pearson Intl

Sat 1/8

8:00 p.m.-9:40 a.m.

1 stop16h 40m

C$ 375

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Thu 14/5

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

1 stop9h 15m

Toronto Pearson Intl

Sun 17/5

6:10 a.m.-6:45 p.m.

2 stops15h 35m

C$ 376

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 11/5

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

1 stop8h 20m

Toronto Pearson Intl

Sat 16/5

10:25 p.m.-9:40 a.m.

1 stop14h 15m

C$ 378

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 11/5

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

1 stop9h 15m

Toronto Pearson Intl

Fri 15/5

5:20 p.m.-6:45 p.m.

2 stops28h 25m

C$ 379
Quickest round-trip

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 30/5

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

1 stop7h 10m

Toronto Pearson Intl

Sun 7/6

9:00 a.m.-6:45 p.m.

1 stop12h 45m

C$ 380

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 30/5

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

2 stops10h 29m

Toronto Pearson Intl

Sun 7/6

9:00 a.m.-6:45 p.m.

1 stop12h 45m

C$ 382

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 13/7

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

2 stops10h 29m

Toronto Pearson Intl

Thu 23/7

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

2 stops9h 45m

C$ 383

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 10/8

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

2 stops10h 29m

Toronto Pearson Intl

Thu 13/8

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

2 stops9h 45m

C$ 384

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 11/5

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

1 stop8h 20m

Toronto Pearson Intl

Sun 17/5

10:00 a.m.-6:45 p.m.

1 stop11h 45m

C$ 386

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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$ 534. 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$ 964.

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$ 527 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$ 421 on momondo.

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 April 2026, prices for Seattle to Toronto Pearson Intl Airport flights are approximately 58% 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$ 309

Fastest flight time

4h 45m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from Seattle in the past 72 hours is C$ 309. The best round-trip flight deal from Seattle to Toronto Pearson Intl Airport found on momondo in the last 72 hours is C$ 256.
The fastest flight from Seattle to Toronto Pearson Intl Airport takes 4h 45m
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 45m 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$ 256Free CancellationRating
7.1
10,982 reviews
Search Air Canada flights
WestJetPriceFrom C$ 282Free CancellationRating
7.2
3,328 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 302Free CancellationRating
7.9
12,319 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto Pearson Intl Airport

    Alaska Airlines operates around 7 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$ 764, 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 7.9/10 in 12,318 reviews.

  • Air Canada Flights From Seattle to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 10,982 reviews) operates around 1 flight from Seattle to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around C$ 452, with deals from around C$ 256 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
Brampton
Mississauga
Collingwood
Oshawa
Guelph
Markham
Vaughan
Barrie
Muskoka
Kitchener
Niagara-on-the-Lake
Burlington
Orillia
Waterloo
Cambridge
Oakville
Brantford
Pickering
Richmond Hill

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

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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 30/5
Sat 6/6
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Toronto