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Cheap flights from Seattle to Toronto from $99

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 1/15. 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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Find the cheapest flights from Seattle to Toronto

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Toronto that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Toronto.

Cheap last minute flights

Planning a quick getaway from Seattle to Toronto? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Toronto, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Toronto

Find recent round-trip train or bus tickets from Seattle to Toronto.

All round-trip flight deals to Toronto

The cheapest plane tickets to Toronto found on KAYAK recently.
2:16 pm - 6:46 amSEA-YYZ
13h 30m1 stop
8:00 pm - 12:19 amYYZ-SEA
31h 19m1 stop
Wed, Jan 8 - Mon, Jan 13
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$235Alaska Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$299Air Canada
Find Deal
Tue, Jan 14 - Tue, Jan 21
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$304United Airlines
Find Deal
Sat, Jan 11 - Tue, Jan 14
7:05 pm - 6:09 amSEA-YYZ
8h 04m1 stop
11:50 pm - 9:50 amYYZ-SEA
13h 00m2 stops
$306Air Canada
Find Deal
Fri, Jan 31 - Fri, Feb 7
3:20 pm - 9:11 pmSEA-YYZ
26h 51m1 stop
7:55 am - 2:21 pmYYZ-SEA
9h 26m1 stop
$311WestJet
Find Deal
Sat, Jan 11 - Tue, Jan 14
7:00 am - 7:45 pmSEA-YYZ
9h 45m1 stop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$313United Airlines
Find Deal
Fri, Jan 31 - Fri, Feb 7
5:30 am - 3:52 pmSEA-YYZ
7h 22m1 stop
5:00 pm - 12:50 amYYZ-SEA
10h 50m1 stop
$316Delta
Find Deal
Fri, Jan 17 - Mon, Jan 20
3:20 pm - 12:38 pmSEA-YYZ
18h 18m1 stop
8:00 pm - 2:21 pmYYZ-SEA
21h 21m1 stop
$318WestJet
Find Deal
Sat, Jan 11 - Sat, Jan 18
5:45 am - 4:58 pmSEA-YYZ
8h 13m1 stop
5:55 pm - 11:59 pmYYZ-SEA
9h 04m1 stop
$344Delta
Find Deal
Wed, May 14 - Tue, May 20
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$99Alaska Airlines
Find Deal
Wed, Jan 15
7:10 am - 6:46 amSEA-YYZ
20h 36m1 stop
Wed, Jan 15
11:30 am - 12:26 amSEA-YYZ
9h 56m2 stops
$111WestJet
Find Deal
Fri, Jan 17
11:30 am - 6:55 amSEA-YYZ
16h 25m1 stop
$130WestJet
Find Deal
Fri, Jan 17
6:00 am - 7:09 pmSEA-YYZ
10h 09m1 stop
$131Delta
Find Deal
Thu, Jan 16
11:05 pm - 11:59 amSEA-YYZ
9h 54m1 stop
$132Delta
Find Deal
Fri, Jan 31
5:00 am - 4:52 pmSEA-YYZ
8h 52m1 stop
$133United Airlines
Find Deal
Sat, Mar 8
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$137Air Canada
Find Deal
Wed, Jan 15
5:45 am - 6:43 pmSEA-YTZ
9h 58m2 stops
$137Air Canada
Find Deal
Wed, Jan 15
5:45 am - 8:15 pmSEA-YYZ
11h 30m2 stops
$138United Airlines
Find Deal
Sat, Feb 1
7:00 pm - 11:59 pmSEA-YYZ
25h 59m2 stops
10:00 am - 12:19 amYYZ-SEA
17h 19m2 stops
Sat, Dec 21 - Sat, Jan 11
7:00 pm - 11:59 pmSEA-YYZ
25h 59m2 stops
9:30 am - 5:00 pmYYZ-SEA
10h 30m1 stop
Sat, Dec 21 - Sat, Jan 11
3:20 pm - 5:29 pmSEA-YYZ
23h 09m1 stop
10:40 pm - 8:05 amYYZ-SEA
12h 25m1 stop
$710WestJet
Find Deal
Sat, Dec 21 - Sun, Dec 29
1:40 pm - 12:40 amSEA-YYZ
8h 00m1 stop
6:15 pm - 8:05 amYYZ-SEA
16h 50m1 stop
$762WestJet
Find Deal
Mon, Dec 23 - Sun, Dec 29
7:26 am - 3:07 pmSEA-YYZ
4h 41mnonstop
4:22 pm - 6:42 pmYYZ-SEA
5h 20mnonstop
$979Alaska Airlines
Find Deal
Thu, Dec 19 - Wed, Dec 25
7:26 am - 3:07 pmSEA-YYZ
4h 41mnonstop
4:22 pm - 6:42 pmYYZ-SEA
5h 20mnonstop
$1,033Alaska Airlines
Find Deal
Thu, Dec 19 - Sun, Dec 29
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
6:55 pm - 9:20 pmYYZ-SEA
5h 25mnonstop
$1,038Air Canada
Find Deal
Mon, Dec 23 - Sun, Dec 29
5:00 am - 4:52 pmSEA-YYZ
8h 52m1 stop
6:55 pm - 9:20 pmYYZ-SEA
5h 25mnonstop
$1,096United Airlines
Find Deal
Thu, Dec 19 - Sun, Dec 29
3:05 pm - 12:57 amSEA-YYZ
6h 52m1 stop
11:30 am - 6:25 pmYYZ-SEA
9h 55m1 stop
$1,097Air Canada
Find Deal
Fri, Dec 20 - Sat, Jan 4
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
6:55 pm - 9:20 pmYYZ-SEA
5h 25mnonstop
$1,456United Airlines
Find Deal
Sat, Dec 21 - Sun, Dec 29
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$235Alaska Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$246Alaska Airlines
Find Deal
Sat, Jan 11 - Tue, Jan 14
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$247Alaska Airlines
Find Deal
Wed, Jan 29 - Thu, Jan 30
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$250Alaska Airlines
Find Deal
Wed, Jan 29 - Thu, Jan 30
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
Sat, Jan 11 - Sat, Jan 18
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$289Lufthansa
Find Deal
Sat, Feb 1 - Sat, Feb 8
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$290Air Canada
Find Deal
Wed, Jan 29 - Thu, Jan 30
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$295Air Canada
Find Deal
Sat, Jan 11 - Tue, Jan 14
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$304United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
$323United Airlines
Find Deal
Sat, Jan 11 - Sat, Jan 18

Alaska Airlines flights from Seattle to Toronto

Our best Alaska Airlines deals on Seattle to Toronto flight tickets
Alaska Airlines
Jan 11
SEA7:27 amSeattle/Tacoma Intl
4h 38m
YYZ3:05 pmToronto Pearson Intl
Jan 18
YYZ4:20 pmToronto Pearson Intl
5h 23m
SEA6:43 pmSeattle/Tacoma Intl
Alaska Airlines
Jan 11
SEA7:27 amSeattle/Tacoma Intl
4h 38m
YYZ3:05 pmToronto Pearson Intl
Jan 14
YYZ4:20 pmToronto Pearson Intl
5h 23m
SEA6:43 pmSeattle/Tacoma Intl
Alaska Airlines
Jan 29
SEA7:27 amSeattle/Tacoma Intl
4h 38m
YYZ3:05 pmToronto Pearson Intl
Jan 30
YYZ4:20 pmToronto Pearson Intl
5h 23m
SEA6:43 pmSeattle/Tacoma Intl

WestJet flights from Seattle to Toronto

Our best WestJet deals on Seattle to Toronto flight tickets
WestJet
Jan 11
SEA3:20 pmSeattle/Tacoma Intl
26h 51m
1 stop
YYZ9:11 pmToronto Pearson Intl
Jan 14
YYZ7:55 amToronto Pearson Intl
9h 26m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
WestJet
Jan 11
SEA3:20 pmSeattle/Tacoma Intl
18h 18m
1 stop
YYZ12:38 pmToronto Pearson Intl
Jan 18
YYZ8:00 pmToronto Pearson Intl
21h 21m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
WestJet
Jan 24
SEA3:15 pmSeattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 amToronto Pearson Intl
Jan 26
YYZ8:00 pmToronto Pearson Intl
21h 21m
1 stop
SEA2:21 pmSeattle/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 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 $292. If you are unable to visit Toronto during the month of January, then departing from Seattle during the month September is also very affordable. Most momondo users find prices during this month for around $408.

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $445. 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 $579.

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 $536. 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?

We recommend purchasing flights from Seattle to Toronto 52 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Toronto for $525. Don’t hesitate to check prices now though because momondo users recently found tickets for as low as $256.

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.

Can stopping save me money on Seattle to Toronto flights?

You could potentially save up to 5% 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 December 2024, prices for Seattle to Toronto flights are approximately 42% 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

$99

Fastest flight time

4h 35m

Direct flights

Every day

Airports in Toronto

3 airports
The best one-way flight to Toronto from Seattle in the past 72 hours is $99. The best round-trip flight deal from Seattle to Toronto found on momondo in the last 72 hours is $234.
The fastest flight from Seattle to Toronto takes 4h 35m
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), Toronto Island (YTZ)

  • 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 35m.

  • 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
United AirlinesPriceFrom $172Free CancellationRating
7.4
9,055 reviews
Search United Airlines flights
Air CanadaPriceFrom $176Free CancellationRating
7.0
8,382 reviews
Search Air Canada flights
WestJetPriceFrom $235Free CancellationRating
7.2
2,818 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $248Free CancellationRating
8.0
9,554 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $464Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $490Free CancellationRating
8.0
8,604 reviews
Search Delta flights
  • Alaska Airlines Flights From Seattle to Toronto

    Alaska Airlines flight deals from Seattle to Toronto start from $248 round-trip. Over the 1 Alaska Airlines flight for this route in a normal week, average airfare is usually $522 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 $172 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around $526. United Airlines operates 3 flights to Toronto from Seattle in an average week. Users have rated it 7.4/10 across 9,055 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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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