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Cheap flights from Seattle to Toronto from $68

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 5/30. 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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0 bags

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Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Seattle to Toronto.
WestJet Logo
7:05 am - 6:56 pmSEA-YKF
8h 51m1 stop
WestJet Logo
6:00 am - 12:58 pmYKF-SEA
9h 58m1 stop
$151WestJet
Find Deal
Thu, Aug 14 - Mon, Aug 18
WestJet Logo
1:50 pm - 12:46 amSEA-YKF
7h 56m1 stop
WestJet Logo
6:00 am - 12:58 pmYKF-SEA
9h 58m1 stop
$156WestJet
Find Deal
Fri, May 2 - Wed, May 7
Air Canada Logo
7:20 am - 7:50 pmSEA-YTZ
9h 30m1 stop
Air Canada Logo
12:25 pm - 7:37 pmYTZ-SEA
10h 12m1 stop
$303Air Canada
Find Deal
Sun, May 11 - Mon, May 12
Air Canada Logo
7:20 am - 7:50 pmSEA-YTZ
9h 30m1 stop
Air Canada Logo
12:25 pm - 7:37 pmYTZ-SEA
10h 12m1 stop
$314Air Canada
Find Deal
Sun, May 11 - Mon, May 12
Alaska Airlines Logo
7:15 am - 3:00 pmSEA-YYZ
4h 45mnonstop
Alaska Airlines Logo
4:45 pm - 7:04 pmYYZ-SEA
5h 19mnonstop
$318Alaska Airlines
Find Deal
Wed, May 7 - Sat, May 24
Alaska Airlines Logo
7:15 am - 3:00 pmSEA-YYZ
4h 45mnonstop
Alaska Airlines Logo
4:45 pm - 7:04 pmYYZ-SEA
5h 19mnonstop
$328Alaska Airlines
Find Deal
Fri, May 9 - Sat, May 24
Delta Logo
11:50 pm - 11:40 amSEA-YYZ
8h 50m1 stop
Delta Logo
11:30 am - 6:47 pmYYZ-SEA
10h 17m1 stop
$353Delta
Find Deal
Thu, May 8 - Sat, May 24
United Airlines Logo
11:24 pm - 11:44 amSEA-YYZ
9h 20m1 stop
United Airlines Logo
8:50 am - 11:10 amYYZ-SEA
5h 20mnonstop
$362United Airlines
Find Deal
Sat, Jun 14 - Fri, Jul 11
Delta Logo
10:59 pm - 11:20 amSEA-YYZ
9h 21m1 stop
Delta Logo
6:05 pm - 10:23 pmYYZ-SEA
7h 18m1 stop
$365Delta
Find Deal
Thu, May 1 - Sat, May 10
United Airlines Logo
11:40 am - 7:37 pmSEA-YYZ
4h 57mnonstop
United Airlines Logo
4:18 pm - 8:01 amYYZ-SEA
18h 43m1 stop
$367United Airlines
Find Deal
Sun, Jun 1 - Sun, Jun 15

Alaska Airlines flights from Seattle to Toronto

Our best Alaska Airlines deals on Seattle to Toronto flight tickets
Alaska Airlines
May 7
SEA7:15 amSeattle/Tacoma Intl
4h 45m
YYZ3:00 pmToronto Pearson Intl
May 24
YYZ4:45 pmToronto Pearson Intl
5h 19m
SEA7:04 pmSeattle/Tacoma Intl
Alaska Airlines
May 9
SEA7:15 amSeattle/Tacoma Intl
4h 45m
YYZ3:00 pmToronto Pearson Intl
May 24
YYZ4:45 pmToronto Pearson Intl
5h 19m
SEA7:04 pmSeattle/Tacoma Intl
Alaska Airlines
May 8
SEA7:15 amSeattle/Tacoma Intl
4h 45m
YYZ3:00 pmToronto Pearson Intl
May 24
YYZ4:45 pmToronto Pearson Intl
5h 19m
SEA7:04 pmSeattle/Tacoma Intl

United Airlines flights from Seattle to Toronto

Our best United Airlines deals on Seattle to Toronto flight tickets
United Airlines
Jun 14
SEA11:24 pmSeattle/Tacoma Intl
9h 20m
1 stop
YYZ11:44 amToronto Pearson Intl
Jul 11
YYZ8:50 amToronto Pearson Intl
5h 20m
SEA11:10 amSeattle/Tacoma Intl
United Airlines
Jun 1
SEA11:40 amSeattle/Tacoma Intl
4h 57m
YYZ7:37 pmToronto Pearson Intl
Jun 15
YYZ4:18 pmToronto Pearson Intl
18h 43m
1 stop
SEA8:01 amSeattle/Tacoma Intl
United Airlines
Apr 30
SEA11:59 pmSeattle/Tacoma Intl
8h 35m
1 stop
YYZ11:34 amToronto Pearson Intl
May 4
YYZ7:00 pmToronto Pearson Intl
8h 59m
1 stop
SEA12:59 amSeattle/Tacoma Intl

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?

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 $282. 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 $286.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $617. 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 $745.

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

In the afternoon is the cheapest time of day to fly from Seattle to Toronto when you can find flight prices for as low as $283. Flying to Toronto in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Toronto are more costly in the morning, with an average ticket price of $668. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 $434 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 $292 on momondo.

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

There are 4 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.

How have Seattle to Toronto flight prices changed over time?

As of April 2025, prices for Seattle to Toronto flights are approximately 36% 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

$68

Fastest flight time

4h 37m

Direct flights

Every day

Airports in Toronto

3 airports
The best one-way flight to Toronto from Seattle in the past 72 hours is $68. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is $151.
The fastest flight from Seattle to Toronto takes 4h 37m
Direct flights go from Seattle to Toronto every day.
There are 3 airports near Toronto: Toronto Region of Waterloo Intl (YKF), Toronto Pearson Intl (YYZ), Hamilton (YHM)

  • 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 37m.

  • 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 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?

  • 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 $136Free CancellationRating
7.0
9,142 reviews
Search Air Canada flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
8,667 reviews
Search United Airlines flights
WestJetPriceFrom $235Free CancellationRating
7.2
2,809 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $250Free CancellationRating
8.0
9,882 reviews
Search Alaska Airlines flights
DeltaPriceFrom $394Free CancellationRating
8.0
7,917 reviews
Search Delta flights
  • Alaska Airlines Flights From Seattle to Toronto

    Alaska Airlines flight deals from Seattle to Toronto start from $250 round-trip. Over the 4 Alaska Airlines flights for this route in a normal week, average airfare is usually $496 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 $158 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $470. United Airlines operates 10 flights to Toronto from Seattle in an average week. Users have rated it 7.4/10 across 8,667 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.


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1 adult
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Tue 4/22
Tue 4/29

Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Airports listed have a maximum distance of 52.0 mi from Toronto