Cheap flights from Seattle to Toronto from $152
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 1/12. 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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Fly from
Fly to
Route
Depart
Return
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Wed 10/28
3:30 pm-6:45 am
2 stops12h 15m
Toronto Pearson Intl
Thu 11/5
7:30 am-1:40 pm
1 stop9h 10m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Wed 2/24
2:30 pm-5:45 am
2 stops12h 15m
Toronto Pearson Intl
Wed 3/3
7:30 am-1:40 pm
1 stop9h 10m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sun 11/8
9:13 pm-6:51 am
1 stop30h 38m
Toronto Pearson Intl
Fri 11/20
7:30 am-1:40 pm
1 stop9h 10m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sun 11/8
9:13 pm-6:51 am
1 stop30h 38m
Toronto Pearson Intl
Thu 11/19
7:30 am-1:40 pm
1 stop9h 10m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 11/7
8:19 am-4:05 pm
Nonstop4h 46m
Toronto Pearson Intl
Sat 11/14
5:15 pm-7:45 pm
Nonstop5h 30m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Tue 10/27
8:40 am-7:57 pm
1 stop8h 17m
Toronto Pearson Intl
Mon 11/2
4:50 pm-9:57 pm
1 stop8h 07m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 11/7
8:19 am-4:05 pm
Nonstop4h 46m
Toronto Pearson Intl
Sat 11/14
5:15 pm-7:45 pm
Nonstop5h 30m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 11/7
11:10 pm-8:49 am
1 stop6h 39m
Toronto Pearson Intl
Sat 11/14
12:15 pm-6:37 pm
1 stop9h 22m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Sat 11/7
11:59 pm-12:19 pm
1 stop9h 20m
Toronto Pearson Intl
Sat 11/14
5:25 pm-11:57 pm
1 stop9h 32m
SeattleToronto
SEA Seattle/Tacoma Intl - YYZ Toronto Pearson Intl
SEAYYZ
Seattle/Tacoma Intl
Fri 11/6
5:29 pm-4:46 pm
3 stops20h 17m
Toronto Pearson Intl
Sun 11/8
6:45 am-11:56 pm
2 stops20h 11m
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 typical price of a round-trip flight between Seattle and Toronto?
Prices are currently low for flights on this route.
Typical prices usually range from $501 to $719.The lowest price recently found on this route was $373.
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 $255. If you are unable to visit Toronto during the month of January, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $289.
What is the cheapest day to depart on your flight to Toronto?
On average, the least expensive day to fly to Toronto from Seattle is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $550. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Sunday, with ticket prices averaging around $771.
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 from Seattle 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 $415 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 $318 on momondo.
What cabin class options are available on Seattle to Toronto flights?
There are 4 cabin classes available to choose from on Seattle 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 14% on your flight if you consider stops on a Seattle to Toronto flight.
What is the cheapest airline that flies from Seattle/Tacoma Intl to Toronto?
Alaska Airlines, WestJet, and Delta are the most popular carriers operating from Seattle/Tacoma Intl to Toronto
What airlines fly to Toronto?
Alaska Airlines, WestJet and Air Canada 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 57% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 5 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Seattle and Toronto?
Calgary (YYC) was the most common stop: 88% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Seattle to Toronto?
Flights via Salt Lake City (SLC) offer the lowest average round-trip price of $293.
Which layover airport has the shortest travel time from Seattle to Toronto?
Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 7h 02m.
Which layover airport has the shortest connection time from Seattle to Toronto?
Vancouver (YVR) has the shortest average layover time for this route: 1h 19m.
How many flights depart from Seattle to Toronto on average per day?
As of October 2026, 3 flights take off from Seattle and land in Toronto each day. The most common flight departure time for this route is 7:00AM, with 100% of daily flights taking off at noon.
How many flights depart from Seattle to Toronto on average per week?
As of October 2026, there are 27 flights per week flying from Seattle to Toronto. The most common day of the week flights depart is Mon, with 19% 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
Frequently asked questions about flying from Seattle to Toronto
How far is Seattle/Tacoma Intl to Toronto by plane?
Seattle/Tacoma Intl and Toronto are 2065.1 mi apart from one another. By plane, this route typically takes 4h 32m.
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?
The number of operators available for flights from Seattle/Tacoma Intl Airport to Toronto is 5 as of October 2026.
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 you'll need for your trip to Toronto may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Toronto. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Seattle to Toronto?
Based on momondo bookings for flights between Seattle and Toronto, the leading plane model is Airbus A220-300, making up 18.42% of the total bookings. Other popular models include Boeing 737-900 Passenger/BBJ3 (winglets) with 11.05%, Airbus A321neo with 8.42%, and Boeing 777-300ER with 7.37%.
What is the most popular airline from Seattle to Toronto?
momondo data reveals that the most frequently booked airline on the route from Seattle to Toronto is Alaska Airlines, representing 53% of all bookings. The subsequent popular airlines are Air Canada at 20%, WestJet at 17%, and Delta at 6%.
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 $132 | Free Cancellation | Rating 7.8 8,635 reviews | |||
| PriceFrom $132 | Free Cancellation | Rating 7.1 11,741 reviews | |||
| PriceFrom $240 | Free Cancellation | Rating 7.2 3,453 reviews | |||
| PriceFrom $246 | Free Cancellation | Rating 7.9 13,035 reviews | |||
| PriceFrom $277 | Free Cancellation | Rating 7.4 10,315 reviews |
Alaska Airlines Flights From Seattle to Toronto
Alaska Airlines flight deals from Seattle to Toronto start from $246 round-trip. Over the 6 Alaska Airlines flights for this route in a normal week, average airfare is usually $508 round-trip - but some users have found much cheaper deals with momondo.
United Airlines Flights From Seattle to Toronto
United Airlines is also a popular choice for this route. United Airlines flight deals for Seattle to Toronto start from as low as $277 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $579. United Airlines operates 7 flights to Toronto from Seattle in an average week. Users have rated it 7.4/10 across 10,315 reviews.
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?
momondo does allow users to show only those flights to Toronto from Seattle which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Seattle to Toronto?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Toronto.
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.