Cheap flights from Toronto to Seattle from $112
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto to Seattle departing on 9/23. 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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Air Canada flights from Toronto to Seattle
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United Airlines flights from Toronto to Seattle
Our best United Airlines deals on Toronto to Seattle flight tickets
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How to get the cheapest flight ticket from Toronto to Seattle
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 Toronto and Seattle?
What is the cheapest month to fly to Seattle?
In general, February is the cheapest month to fly from Toronto to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $264. If you don’t want to visit Seattle in February, then you should wait until January to fly from Toronto, when ticket prices are also cheap, with an average price of $266.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Toronto is on a Thursday. momondo users have found tickets for Thursday departures for as low as $418. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Toronto because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $616.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Toronto in the evening is the least expensive time of day to depart. momondo users have found prices as low as $359 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $539. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
What is the cheapest Toronto to Seattle/Tacoma Intl flight route?
Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto - Seattle/Tacoma Intl flight prices
How far in advance should I book a flight to Seattle?
You are more likely to see cheaper flights to Seattle from Toronto when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $362 when searching 7 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Toronto for as low as $315 on momondo.
What cabin class options are available on Toronto to Seattle/Tacoma Intl flights?
There are 4 cabin classes available to choose from on Toronto to Seattle/Tacoma 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 Toronto to Seattle flights?
You could potentially save up to 37% on your flight if you consider stops on a Toronto to Seattle flight.
How have Toronto to Seattle flight prices changed over time?
As of June 2025, prices for Toronto to Seattle flights are approximately 0% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Toronto to Seattle/Tacoma Intl?
WestJet, Air Canada, and Alaska Airlines are the most popular carriers operating from Toronto to Seattle/Tacoma Intl
What airlines fly to Seattle?
Air Canada, Alaska Airlines and WestJet are the top three most popular airlines that fly to Seattle from Toronto according to our data. Air Canada is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 5 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
How many flights depart from Toronto to Seattle on average per day?
As of June 2025, 4 flights take off from Toronto and land in Seattle each day. The most common flight departure time for this route is 8:00AM, with 64% of daily flights taking off at noon.
How many flights depart from Toronto to Seattle on average per week?
As of June 2025, there are 29 flights per week flying from Toronto to Seattle. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.
When to book flights from Toronto to Seattle
Cheap Toronto to Seattle (YTO to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Toronto to Seattle
How far is Toronto to Seattle/Tacoma Intl by plane?
The distance between Toronto and Seattle/Tacoma Intl is about 2065.1 mi. Typically, this will take 5h 19m by plane in normal conditions.
When did momondo last update prices for flights from Toronto to Seattle/Tacoma Intl Airport?
Prices for flights from Toronto to Seattle/Tacoma Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Toronto to Seattle/Tacoma Intl Airport?
There are 5 operators available for flights from Toronto to Seattle/Tacoma Intl Airport as of June 2025.
How old do you have to be to fly from Toronto to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Toronto to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Toronto to Seattle?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Toronto to Seattle is Airbus A220-300 (47.30% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (23.98%), Boeing 737-900 Passenger/BBJ3 (winglets) (10.56%), and Embraer 195 E2 (4.61%).
What is the most popular airline from Toronto to Seattle?
momondo data reveals that the most frequently booked airline on the route from Toronto to Seattle is Air Canada, representing 39% of all bookings. The subsequent popular airlines are Alaska Airlines at 35%, WestJet at 14%, and United Airlines at 7%.
Best airlines flying from Toronto to Seattle
Compare and see reviews for airlines that fly from Toronto to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $141 | Free Cancellation | Rating 7.2 2,868 reviews | |||
| PriceFrom $240 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 8.0 10,000 reviews | |||
| PriceFrom $250 | Free Cancellation | Rating 7.1 9,537 reviews | |||
| PriceFrom $292 | Free Cancellation | Rating 8.0 7,946 reviews |
Alaska Airlines Flights From Toronto to Seattle
Alaska Airlines is one of the most popular airlines flying from Toronto to Seattle, operating 2 flights/week on average for this route. A good Alaska Airlines flight deal for Toronto to Seattle starts from $246 round-trip, up to an average price of $415. Our users have rated Alaska Airlines at 8.0/10.
United Airlines Flights From Toronto to Seattle
The best United Airlines deal for Toronto to Seattle flight tickets found on momondo in the last 72 hours was $240, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $448 round-trip. United Airlines operates 7 flights out of Toronto into Seattle in an average week, so prices vary by time and availability. 8,790 United Airlines reviews by users on momondo have scored the airline at 7.4/10.
Traveling to a place near Seattle?
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Why should I use momondo to find a flight deal from Toronto to Seattle?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Toronto to Seattle. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Toronto to Seattle with flexible booking policies on momondo?
Flights from Toronto to Seattle 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 Toronto to Seattle?
Once you have performed a search for Toronto to Seattle 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 Toronto to Seattle right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Toronto to Seattle now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Seattle and let you know when they change.