Cheap flights from Seattle to Toronto from C$ 136
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 17/7. 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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WestJet flights from Seattle to Toronto
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Alaska Airlines flights from Seattle to Toronto
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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$ 387. 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, Thursday is the cheapest day to fly to Toronto from Seattle. The lowest ticket price found for a Thursday departure recently was C$ 691. 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$ 1,423. 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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as C$ 490 when looking at flights departing in the afternoon. Try not to purchase tickets in the morning because they tend to be around C$ 1,137. 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 24 weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around C$ 579 when searching 24 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$ 401 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?
You could potentially save up to 30% on your flight if you consider stops on a Seattle to Toronto flight.
How have Seattle to Toronto flight prices changed over time?
As of May 2025, prices for Seattle to Toronto flights are approximately 35% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Toronto?
WestJet, Air Canada, and United Airlines are the most popular carriers operating from Seattle/Tacoma Intl to Toronto
Which airlines fly to Toronto?
Alaska Airlines, Air Canada and WestJet are the top three most popular airlines that fly to Toronto from Seattle according to our data. Alaska Airlines is the first choice among our users, with 50% of people opting to fly with this airline when travelling to Toronto. Keep in mind that there are 3 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.
How many flights depart from Seattle to Toronto on average per day?
2 flights are operational daily from Seattle to Toronto as of May 2025. The most popular departure time for this route is 11:00a.m., with 100% of flights per day taking off at noon.
How many flights depart from Seattle to Toronto on average per week?
As of May 2025, there are 19 flights per week flying from Seattle to Toronto. The most common day of the week flights depart is Tue, with 26% of flights taking off on this day.
When to book flights from Seattle to Toronto
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
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 4h 42m.
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?
There are 3 operators available for flights from Seattle/Tacoma Intl Airport to Toronto as of May 2025.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Seattle to Toronto is Airbus A220-300 (40.62% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (25.78%), Airbus A330-200 (8.59%), and Boeing 737-900 Passenger/BBJ3 (winglets) (3.75%).
What is the most popular airline from Seattle to Toronto?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Toronto is WestJet (33% of total bookings). The next most popular airlines are Alaska Airlines (29%), Air Canada (27%), and United Airlines (12%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom C$ 223 | Free Cancellation | Rating 7.0 9,439 reviews | |||
| PriceFrom C$ 295 | Free Cancellation | Rating 7.2 2,857 reviews | |||
| PriceFrom C$ 389 | Free Cancellation | Rating 8.0 10,000 reviews |
Alaska Airlines Flights From Seattle to Toronto
Alaska Airlines is one of the most popular airlines flying from Seattle to Toronto, operating 1 flight/week on average for this route. A good Alaska Airlines flight deal for Seattle to Toronto starts from C$ 284 round-trip, up to an average price of C$ 487. 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 (7.0/10, 9,433 ratings). Air Canada flies from Seattle to Toronto around 6 times per week, with deals starting from C$ 163 round-trip and rising to an average price of around C$ 513.
Travelling to a place near Toronto?
Book flights to Toronto if you plan to visit one of these locationsWhy 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.