Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Toronto to Seattle from $143

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 12/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Toronto to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Toronto to Seattle 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 Toronto to Seattle.

Cheap last minute flights

Planning a quick getaway from Toronto to Seattle? 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 Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Toronto to Seattle

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

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$238Air Canada
Find Deal
Wed, Feb 19 - Tue, Feb 25
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$246Alaska Airlines
Find Deal
Thu, Jan 9 - Tue, Jan 14
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$247Air Canada
Find Deal
Sat, Mar 8 - Tue, Mar 18
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$258Alaska Airlines
Find Deal
Thu, Jan 9 - Sun, Jan 12
7:55 am - 2:21 pmYYZ-SEA
9h 26m1 stop
3:15 pm - 6:00 amSEA-YYZ
11h 45m2 stops
$264WestJet
Find Deal
Mon, Jan 20 - Mon, Jan 27
6:00 am - 10:45 amYYZ-SEA
7h 45m1 stop
11:05 pm - 9:20 amSEA-YYZ
7h 15m1 stop
$267Delta
Find Deal
Thu, Jan 9 - Sun, Jan 12
5:15 pm - 10:55 pmYYZ-SEA
8h 40m1 stop
6:00 am - 4:12 pmSEA-YYZ
7h 12m1 stop
$268Delta
Find Deal
Sat, Jan 11 - Tue, Feb 11
6:14 am - 7:05 pmYYZ-SEA
15h 51m1 stop
12:43 am - 4:15 pmSEA-YYZ
12h 32m1 stop
$284American Airlines
Find Deal
Tue, Feb 25 - Tue, Feb 25
7:00 pm - 2:21 pmYYZ-SEA
22h 21m2 stops
3:15 pm - 6:00 amSEA-YYZ
11h 45m2 stops
$305WestJet
Find Deal
Mon, Jan 20 - Mon, Jan 27
6:10 am - 2:56 pmYYZ-SEA
11h 46m1 stop
12:45 am - 4:15 pmSEA-YYZ
12h 30m1 stop
$315American Airlines
Find Deal
Mon, Jan 20 - Sun, Jan 26
7:15 pm - 9:40 pmYYZ-SEA
5h 25mnonstop
$143Air Canada
Find Deal
Mon, Dec 16
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
$148Alaska Airlines
Find Deal
Thu, Jan 30
7:55 am - 2:21 pmYYZ-SEA
9h 26m1 stop
$152WestJet
Find Deal
Mon, Jan 27
8:00 am - 2:30 pmYYZ-SEA
9h 30m1 stop
$153Air Canada
Find Deal
Tue, Mar 4
7:55 am - 2:21 pmYYZ-SEA
9h 26m1 stop
$157WestJet
Find Deal
Tue, Dec 10
6:00 am - 2:24 pmYYZ-SEA
11h 24m1 stop
$160Delta
Find Deal
Tue, Jan 7
6:15 am - 5:23 pmYYZ-SEA
14h 08m2 stops
$172American Airlines
Find Deal
Tue, Dec 10
6:30 am - 3:00 pmYYZ-SEA
11h 30m2 stops
$216Delta
Find Deal
Tue, Jan 7
4:20 pm - 6:39 pmYYZ-SEA
5h 19mnonstop
$278Alaska Airlines
Find Deal
Sat, Dec 7
6:15 am - 11:31 pmYYZ-SEA
20h 16m1 stop
$321American Airlines
Find Deal
Wed, Jan 1
10:40 pm - 4:23 pmYYZ-SEA
20h 43m2 stops
4:00 pm - 5:55 amSEA-YYZ
10h 55m1 stop
Mon, Nov 25 - Tue, Dec 10
7:30 am - 9:05 pmYYZ-SEA
16h 35m2 stops
4:00 pm - 5:55 amSEA-YYZ
10h 55m1 stop
Sat, Nov 23 - Tue, Dec 10
6:15 am - 12:47 pmYYZ-SEA
9h 32m1 stop
11:59 pm - 1:10 pmSEA-YYZ
10h 11m1 stop
$504American Airlines
Find Deal
Sat, Nov 23 - Tue, Dec 10
12:00 pm - 2:21 pmYYZ-SEA
29h 21m2 stops
3:15 pm - 6:00 amSEA-YYZ
11h 45m2 stops
$532WestJet
Find Deal
Mon, Nov 25 - Tue, Dec 10
6:15 am - 12:47 pmYYZ-SEA
9h 32m1 stop
12:15 am - 10:56 amSEA-YYZ
7h 41m1 stop
$545American Airlines
Find Deal
Sat, Nov 23 - Mon, Dec 9
4:20 pm - 6:54 pmYYZ-SEA
5h 34mnonstop
7:22 am - 2:55 pmSEA-YYZ
4h 33mnonstop
$576Alaska Airlines
Find Deal
Mon, Nov 25 - Tue, Dec 10
4:20 pm - 6:54 pmYYZ-SEA
5h 34mnonstop
7:22 am - 2:55 pmSEA-YYZ
4h 33mnonstop
$577Alaska Airlines
Find Deal
Sat, Nov 23 - Tue, Dec 10
9:00 pm - 2:21 pmYYZ-SEA
44h 21m2 stops
3:15 pm - 6:00 amSEA-YYZ
11h 45m2 stops
$670WestJet
Find Deal
Sat, Nov 23 - Tue, Dec 10
3:05 pm - 10:07 pmYYZ-SEA
10h 02m1 stop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$833Air Canada
Find Deal
Fri, Nov 22 - Mon, Nov 25
1:00 pm - 6:32 pmYYZ-SEA
8h 32m1 stop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$837Air Canada
Find Deal
Fri, Nov 22 - Sun, Nov 24
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$238Air Canada
Find Deal
Tue, Feb 18 - Tue, Feb 25
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$246Alaska Airlines
Find Deal
Thu, Jan 9 - Tue, Jan 14
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$247Air Canada
Find Deal
Sat, Mar 8 - Tue, Mar 18
4:20 pm - 6:43 pmYYZ-SEA
5h 23mnonstop
7:27 am - 3:05 pmSEA-YYZ
4h 38mnonstop
$258Alaska Airlines
Find Deal
Thu, Jan 9 - Tue, Jan 14
4:20 pm - 6:39 pmYYZ-SEA
5h 19mnonstop
7:26 am - 3:07 pmSEA-YYZ
4h 41mnonstop
$259Alaska Airlines
Find Deal
Mon, Dec 9 - Mon, Dec 30
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$267Air Canada
Find Deal
Thu, Jan 9 - Thu, Jan 16
7:05 pm - 9:30 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$270Air Canada
Find Deal
Sat, Jan 11 - Sun, Jan 19
4:20 pm - 6:39 pmYYZ-SEA
5h 19mnonstop
7:26 am - 3:07 pmSEA-YYZ
4h 41mnonstop
$347Alaska Airlines
Find Deal
Tue, Dec 17 - Thu, Dec 26
7:15 pm - 9:40 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$411United Airlines
Find Deal
Mon, Dec 16 - Wed, Dec 25
7:15 pm - 9:40 pmYYZ-SEA
5h 25mnonstop
6:05 am - 1:50 pmSEA-YYZ
4h 45mnonstop
$619United Airlines
Find Deal
Mon, Dec 16 - Mon, Dec 23

Alaska Airlines flights from Toronto to Seattle

Our best Alaska Airlines deals on Toronto to Seattle flight tickets
Alaska Airlines
Jan 9
YYZ4:20 pmToronto Pearson Intl
5h 23m
SEA6:43 pmSeattle/Tacoma Intl
Jan 14
SEA7:27 amSeattle/Tacoma Intl
4h 38m
YYZ3:05 pmToronto Pearson Intl
Alaska Airlines
Jan 9
YYZ4:20 pmToronto Pearson Intl
5h 23m
SEA6:43 pmSeattle/Tacoma Intl
Jan 12
SEA7:27 amSeattle/Tacoma Intl
4h 38m
YYZ3:05 pmToronto Pearson Intl
Alaska Airlines
Dec 9
YYZ4:20 pmToronto Pearson Intl
5h 19m
SEA6:39 pmSeattle/Tacoma Intl
Dec 30
SEA7:26 amSeattle/Tacoma Intl
4h 41m
YYZ3:07 pmToronto Pearson Intl

WestJet flights from Toronto to Seattle

Our best WestJet deals on Toronto to Seattle flight tickets
WestJet
Jan 20
YYZ7:55 amToronto Pearson Intl
9h 26m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
Jan 27
SEA3:15 pmSeattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 amToronto Pearson Intl
WestJet
Nov 27
YYZ6:30 amToronto Pearson Intl
10h 51m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
Dec 4
SEA3:15 pmSeattle/Tacoma Intl
18h 24m
1 stop
YYZ12:39 pmToronto Pearson Intl
WestJet
Jan 20
YYZ7:00 pmToronto Pearson Intl
22h 21m
2 stops
SEA2:21 pmSeattle/Tacoma Intl
Jan 27
SEA3:15 pmSeattle/Tacoma Intl
11h 45m
2 stops
YYZ6:00 amToronto Pearson Intl

See travel insights to Seattle from

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 cheapest month to fly from Toronto to Seattle?

October. The cheapest time of year to fly to Seattle from Toronto is October. Most expensive is March

What is the cheapest day to depart Toronto for Seattle?

Tuesday. The cheapest day of the week is typically Tuesday. The most expensive is typically Monday

When is the cheapest time to fly from Toronto to Seattle?

In the afternoon. Toronto to Seattle flights are approximately 9% more expensive at noon than in the afternoon

What is the cheapest Toronto to Seattle flight route?

Toronto Pearson Intl - Seattle/Tacoma Intl. Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto - Seattle flight prices

How far in advance should you book Toronto to Seattle flights?

42 days before. The cheapest time to buy a flight from Toronto to Seattle is approximately 42 days to departure

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

There are 2 cabin classes available to choose from on Toronto to Seattle 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?

No. A direct flight is the cheapest option for a flight between Toronto to Seattle.

How have Toronto to Seattle flight prices changed over time?

As of November 2024, prices for Toronto to Seattle flights are approximately 20% cheaper when compared to flights at the same time last year.

When to book flights from Toronto to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Toronto to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

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

Best Price Found

$143

Fastest flight time

5h 18m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Toronto in the past 72 hours is $143. The best round-trip flight deal from Toronto to Seattle found on momondo in the last 72 hours is $238.
The fastest flight from Toronto to Seattle takes 5h 18m
Direct flights go from Toronto to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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?

  • 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?

  • What is the most popular airline from Toronto to Seattle?


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
WestJetPriceFrom $163Free CancellationRating
7.3
2,811 reviews
Search WestJet flights
Alaska AirlinesPriceFrom $248Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
DeltaPriceFrom $292Free CancellationRating
8.0
8,756 reviews
Search Delta flights
Air CanadaPriceFrom $316Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights
American AirlinesPriceFrom $402Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Alaska Airlines Flights From Toronto to Seattle

    Alaska Airlines is one of the most popular airlines flying from Toronto to Seattle, operating 1 flight/week on average for this route. A good Alaska Airlines flight deal for Toronto to Seattle starts from $248 round-trip, up to an average price of $414. 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 $287, round-trip. It should be noted that an average United Airlines flight deal for this route in this time was higher, at $557 round-trip. United Airlines operates 6 flights out of Toronto into Seattle in an average week, so prices vary by time and availability. 9,171 United Airlines reviews by users on momondo have scored the airline at 7.4/10.


Why use momondo?

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.


An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Mon 11/25
Mon 12/2
Email me momondo's favorite deals

Find better results for your trip to the United States