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Cheap flights from Seattle to Toronto from C$ 114

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 15/11. 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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Cheap round-trip flights

WestJet Logo
7:05 a.m. - 6:52 p.m.SEA-YYZ
8h 47m1 stop
WestJet Logo
6:45 a.m. - 12:33 p.m.YYZ-SEA
8h 48m1 stop
C$ 290WestJet
Find Deal
Thu, 9 Oct - Sun, 12 Oct
WestJet Logo
8:40 a.m. - 6:52 p.m.SEA-YYZ
7h 12m1 stop
WestJet Logo
8:00 a.m. - 12:59 p.m.YYZ-SEA
7h 59m1 stop
C$ 292WestJet
Find Deal
Fri, 5 Sep - Mon, 8 Sep
WestJet Logo
1:15 p.m. - 12:31 a.m.SEA-YYZ
8h 16m1 stop
WestJet Logo
12:00 p.m. - 8:29 p.m.YYZ-SEA
11h 29m2 stops
C$ 294WestJet
Find Deal
Fri, 5 Sep - Fri, 19 Sep
WestJet Logo
7:05 a.m. - 6:52 p.m.SEA-YYZ
8h 47m1 stop
WestJet Logo
1:30 p.m. - 7:14 p.m.YYZ-SEA
8h 44m1 stop
C$ 297WestJet
Find Deal
Tue, 16 Sep - Sat, 20 Sep
WestJet Logo
1:50 p.m. - 12:22 a.m.SEA-YYZ
7h 32m1 stop
WestJet Logo
12:00 p.m. - 7:14 p.m.YYZ-SEA
10h 14m2 stops
C$ 298WestJet
Find Deal
Thu, 11 Sep - Tue, 16 Sep
Logo
1:50 p.m. - 12:22 a.m.SEA-YYZ
7h 32m1 stop
Logo
8:00 a.m. - 2:16 p.m.YYZ-SEA
9h 16m1 stop
C$ 303
Find Deal
Thu, 4 Sep - Thu, 11 Sep
Air Canada Logo
5:30 a.m. - 6:36 p.m.SEA-YTZ
10h 06m2 stops
Air Canada Logo
12:25 p.m. - 7:31 p.m.YTZ-SEA
10h 06m1 stop
C$ 315Air Canada
Find Deal
Thu, 4 Sep - Thu, 11 Sep
Air Canada Logo
7:20 a.m. - 7:46 p.m.SEA-YTZ
9h 26m1 stop
Air Canada Logo
3:25 p.m. - 8:45 p.m.YTZ-SEA
8h 20m1 stop
C$ 350Air Canada
Find Deal
Mon, 11 Aug - Mon, 18 Aug
Air Canada Logo
5:30 a.m. - 6:36 p.m.SEA-YTZ
10h 06m2 stops
Air Canada Logo
4:20 p.m. - 10:16 p.m.YTZ-SEA
8h 56m2 stops
C$ 353Air Canada
Find Deal
Thu, 4 Sep - Thu, 11 Sep
Air Canada Logo
7:15 a.m. - 7:49 p.m.SEA-YTZ
9h 34m1 stop
Air Canada Logo
12:25 p.m. - 7:31 p.m.YTZ-SEA
10h 06m1 stop
C$ 376Air Canada
Find Deal
Fri, 5 Sep - Fri, 19 Sep

WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets
WestJet
9 Oct
SEA7:05 a.m.Seattle/Tacoma Intl
8h 47m
1 stop
YYZ6:52 p.m.Toronto Pearson Intl
12 Oct
YYZ6:45 a.m.Toronto Pearson Intl
8h 48m
1 stop
SEA12:33 p.m.Seattle/Tacoma Intl
C$ 290
Find similar
WestJet
5 Sep
SEA8:40 a.m.Seattle/Tacoma Intl
7h 12m
1 stop
YYZ6:52 p.m.Toronto Pearson Intl
8 Sep
YYZ8:00 a.m.Toronto Pearson Intl
7h 59m
1 stop
SEA12:59 p.m.Seattle/Tacoma Intl
C$ 292
Find similar
WestJet
5 Sep
SEA1:15 p.m.Seattle/Tacoma Intl
8h 16m
1 stop
YYZ12:31 a.m.Toronto Pearson Intl
19 Sep
YYZ12:00 p.m.Toronto Pearson Intl
11h 29m
2 stops
SEA8:29 p.m.Seattle/Tacoma Intl
C$ 294
Find similar

Air Canada flights from Seattle to Toronto

Our best Air Canada deals on Seattle to Toronto flight tickets
Air Canada
4 Sep
SEA5:30 a.m.Seattle/Tacoma Intl
10h 06m
2 stops
YTZ6:36 p.m.Toronto Island
11 Sep
YTZ12:25 p.m.Toronto Island
10h 06m
1 stop
SEA7:31 p.m.Seattle/Tacoma Intl
C$ 315
Find similar
Air Canada
11 Aug
SEA7:20 a.m.Seattle/Tacoma Intl
9h 26m
1 stop
YTZ7:46 p.m.Toronto Island
18 Aug
YTZ3:25 p.m.Toronto Island
8h 20m
1 stop
SEA8:45 p.m.Seattle/Tacoma Intl
C$ 350
Find similar
Air Canada
4 Sep
SEA5:30 a.m.Seattle/Tacoma Intl
10h 06m
2 stops
YTZ6:36 p.m.Toronto Island
11 Sep
YTZ4:20 p.m.Toronto Island
8h 56m
2 stops
SEA10:16 p.m.Seattle/Tacoma Intl
C$ 353
Find similar

See travel insights to Toronto from

How to get the cheapest flight ticket from Seattle to Toronto

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 cheapest month to fly to Toronto?

The month of January is, on average, the cheapest month to fly to Toronto from Seattle, with most prices found around C$ 386. The month of February is another great option to travel to Toronto, with average flight prices from Seattle averaging around C$ 392.

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

According to our data, Wednesday is the cheapest day to fly to Toronto from Seattle. The lowest ticket price found for a Wednesday departure recently was C$ 494. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Seattle to Toronto on a Tuesday will generally be more expensive and average around C$ 1,266. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Toronto?

Flying to Toronto from Seattle in the evening is the least expensive time of day to depart. momondo users have found prices as low as C$ 253 when looking at flights departing in the evening. Try not to purchase tickets in the morning because they tend to be around C$ 911. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Toronto?

You are more likely to see cheaper flights to Toronto from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around C$ 579 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from Seattle for as low as C$ 400 on momondo.

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

There are 3 cabin classes available to choose from on Seattle/Tacoma Intl to Toronto 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 flights?

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

How have Seattle to Toronto flight prices changed over time?

As of July 2025, prices for Seattle to Toronto flights are approximately 41% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Toronto

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

Cheap Seattle to Toronto (SEA to YTO) flight deals and tips

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

Best price found

C$ 114

Fastest flight time

4h 43m

Direct flights

Every day

Airports in Toronto

4 airports
The best one-way flight to Toronto from Seattle in the past 72 hours is C$ 114. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is C$ 290.
The fastest flight from Seattle to Toronto takes 4h 43m
Direct flights go from Seattle to Toronto every day.
There are 4 airports near Toronto: Toronto Region of Waterloo Intl (YKF), Toronto Pearson Intl (YYZ), Toronto Island (YTZ), Hamilton (YHM)
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  • How far is Seattle/Tacoma Intl to Toronto by plane?

    There are 3323.4 km between Seattle/Tacoma Intl and Toronto. In terms of flight time, this usually takes a little over 6h 56m.

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

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

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

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

    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.

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

    The travel and health documents required for your trip to Toronto 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. 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?

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

Best airlines flying from Seattle to Toronto

Compare and see reviews for airlines that fly from Seattle to Toronto with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 189Free CancellationRating
7.1
9,717 reviews
Search Air Canada flights
WestJetPriceFrom C$ 294Free CancellationRating
7.2
2,939 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 418Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Toronto

    Alaska Airlines is one of the most popular airlines flying from Seattle to Toronto, operating 7 flights/week on average for this route. A good Alaska Airlines flight deal for Seattle to Toronto starts from C$ 305 round-trip, up to an average price of C$ 532. Our users have rated Alaska Airlines at 8.0/10.

  • Air Canada Flights From Seattle to Toronto

    Another popular option for Seattle to Toronto flights is Air Canada (7.1/10, 9,717 ratings). Air Canada flies from Seattle to Toronto around 7 times per week, with deals starting from C$ 138 round-trip and rising to an average price of around C$ 439.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Apsley

Why use momondo?

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

It is quick and easy to find Seattle to Toronto 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 Toronto that suits you.

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

Yes. momondo enables you to select and highlight flights to Toronto from Seattle with this policy.

How can momondo help me find flights from Seattle to Toronto?

Once you have performed a search for Seattle to Toronto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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 trip

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Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Airports listed have a maximum distance of 83.6 km from Toronto
Toronto Region of Waterloo Intl Airport
Toronto Island Airport
Toronto Pearson Intl Airport