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Cheap flights from Toronto Pearson Intl Airport to Seattle from C$ 217

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 Pearson Intl Airport to Seattle departing on 27/5. 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

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Find the cheapest flights from Toronto Pearson Intl Airport to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Toronto Pearson Intl Airport to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.
Delta Logo
3:31 p.m. - 10:22 p.m.YYZ-SEA
9h 51m1 stop
Delta Logo
7:10 a.m. - 4:44 p.m.SEA-YYZ
6h 34m1 stop
C$ 379Delta
Find Deal
Tue, 17 Jun - Tue, 24 Jun
Delta Logo
12:10 p.m. - 10:43 p.m.YYZ-SEA
13h 33m1 stop
Delta Logo
5:55 a.m. - 5:15 p.m.SEA-YYZ
8h 20m1 stop
C$ 384Delta
Find Deal
Wed, 4 Jun - Sun, 8 Jun
WestJet Logo
8:00 a.m. - 12:59 p.m.YYZ-SEA
7h 59m1 stop
WestJet Logo
7:05 a.m. - 6:52 p.m.SEA-YYZ
8h 47m1 stop
C$ 388WestJet
Find Deal
Sun, 21 Sep - Sat, 27 Sep
Alaska Airlines Logo
4:45 p.m. - 7:04 p.m.YYZ-SEA
5h 19mdirect
Alaska Airlines Logo
7:23 a.m. - 3:00 p.m.SEA-YYZ
4h 37mdirect
C$ 392Alaska Airlines
Find Deal
Wed, 21 May - Tue, 3 Jun
Air Canada Logo
6:15 a.m. - 2:13 p.m.YYZ-SEA
10h 58m2 stops
Air Canada Logo
2:55 p.m. - 5:50 a.m.SEA-YYZ
11h 55m2 stops
C$ 395Air Canada
Find Deal
Thu, 5 Jun - Wed, 11 Jun
WestJet Logo
9:00 a.m. - 7:10 p.m.YYZ-SEA
13h 10m2 stops
WestJet Logo
7:05 a.m. - 12:33 a.m.SEA-YYZ
14h 28m2 stops
C$ 398WestJet
Find Deal
Wed, 28 May - Mon, 2 Jun
Air Canada Logo
12:00 p.m. - 7:37 p.m.YYZ-SEA
10h 37m1 stop
Air Canada Logo
2:55 p.m. - 5:50 a.m.SEA-YYZ
11h 55m2 stops
C$ 402Air Canada
Find Deal
Thu, 5 Jun - Wed, 11 Jun
Alaska Airlines Logo
4:45 p.m. - 7:04 p.m.YYZ-SEA
5h 19mdirect
Alaska Airlines Logo
7:23 a.m. - 3:00 p.m.SEA-YYZ
4h 37mdirect
C$ 405Alaska Airlines
Find Deal
Wed, 21 May - Sun, 1 Jun
United Airlines Logo
6:20 p.m. - 12:59 a.m.YYZ-SEA
9h 39m1 stop
United Airlines Logo
1:49 p.m. - 11:58 p.m.SEA-YYZ
7h 09m1 stop
C$ 431United Airlines
Find Deal
Wed, 21 May - Wed, 4 Jun
United Airlines Logo
8:30 a.m. - 10:51 a.m.YYZ-SEA
5h 21mdirect
United Airlines Logo
11:21 p.m. - 10:50 a.m.SEA-YYZ
8h 29m1 stop
C$ 434United Airlines
Find Deal
Mon, 16 Jun - Tue, 24 Jun

Delta flights from Toronto Pearson Intl Airport to Seattle

Our best Delta deals on Toronto Pearson Intl Airport to Seattle flight tickets
Delta
17 Jun
YYZ3:31 p.m.Toronto Pearson Intl
9h 51m
1 stop
SEA10:22 p.m.Seattle/Tacoma Intl
24 Jun
SEA7:10 a.m.Seattle/Tacoma Intl
6h 34m
1 stop
YYZ4:44 p.m.Toronto Pearson Intl
Delta
4 Jun
YYZ12:10 p.m.Toronto Pearson Intl
13h 33m
1 stop
SEA10:43 p.m.Seattle/Tacoma Intl
8 Jun
SEA5:55 a.m.Seattle/Tacoma Intl
8h 20m
1 stop
YYZ5:15 p.m.Toronto Pearson Intl
Delta
13 Jun
YYZ5:50 p.m.Toronto Pearson Intl
7h 35m
1 stop
SEA10:25 p.m.Seattle/Tacoma Intl
24 Jun
SEA7:10 a.m.Seattle/Tacoma Intl
6h 34m
1 stop
YYZ4:44 p.m.Toronto Pearson Intl

American Airlines flights from Toronto Pearson Intl Airport to Seattle

Our best American Airlines deals on Toronto Pearson Intl Airport to Seattle flight tickets
American Airlines
17 Jun
YYZ1:20 p.m.Toronto Pearson Intl
11h 14m
2 stops
SEA9:34 p.m.Seattle/Tacoma Intl
24 Jun
SEA8:00 a.m.Seattle/Tacoma Intl
12h 28m
2 stops
YYZ11:28 p.m.Toronto Pearson Intl
American Airlines
29 May
YYZ1:15 p.m.Toronto Pearson Intl
12h 54m
1 stop
SEA11:09 p.m.Seattle/Tacoma Intl
4 Jun
SEA12:05 a.m.Seattle/Tacoma Intl
11h 25m
1 stop
YYZ2:30 p.m.Toronto Pearson Intl
American Airlines
5 Jun
YYZ6:29 p.m.Toronto Pearson Intl
8h 48m
1 stop
SEA12:17 a.m.Seattle/Tacoma Intl
11 Jun
SEA5:30 a.m.Seattle/Tacoma Intl
10h 14m
1 stop
YYZ6:44 p.m.Toronto Pearson Intl

See travel insights to Seattle from

How to get the cheapest flight ticket from Toronto Pearson Intl Airport 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 to Seattle?

If you aren’t able to travel to Seattle during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 391.

What is the cheapest day to depart on your flight to Seattle?

Our data shows that Thursday is the least expensive day to fly to Seattle. Tickets to fly out on this day can be as low as C$ 565. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around C$ 722. These prices are subject to change though, so be sure to set up a Price Alert for flights to Seattle.

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

Our most recent data shows that the best time of day to fly to Seattle is in the evening. Flights from Toronto Pearson Intl Airport to Seattle during this time can be as low as C$ 542. Flights in the morning are often more expensive with an average ticket price of C$ 771.

What is the cheapest Toronto Pearson Intl to Seattle/Tacoma Intl flight route?

Fly from Toronto Pearson Intl to Seattle/Tacoma Intl for the best Toronto Pearson Intl - 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 Pearson Intl Airport when booking 7 weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around C$ 514 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 Pearson Intl Airport for as low as C$ 449 on momondo.

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

There are 4 cabin classes available to choose from on Toronto Pearson Intl 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.

How have Toronto Pearson Intl Airport to Seattle flight prices changed over time?

As of April 2025, prices for Toronto Pearson Intl Airport to Seattle flights are approximately 9% cheaper when compared to flights at the same time last year.

When to book flights from Toronto Pearson Intl Airport to Seattle

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

Cheap Toronto Pearson Intl Airport to Seattle (YYZ to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Toronto Pearson Intl Airport to Seattle

Best price found

C$ 217

Fastest flight time

5h 14m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Toronto Pearson Intl Airport in the past 72 hours is C$ 217. The best round-trip flight deal from Toronto Pearson Intl Airport to Seattle found on momondo in the last 72 hours is C$ 379.
The fastest flight from Toronto Pearson Intl Airport to Seattle takes 5h 14m
Direct flights go from Toronto Pearson Intl Airport to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is Toronto Pearson Intl to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 3304.6 km away from Toronto Pearson Intl. A reasonable flight in good conditions will take 5h 19m.

  • When did momondo last update prices for flights from Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Toronto Pearson Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents required for your trip to Seattle/Tacoma Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Seattle/Tacoma Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Toronto Pearson Intl Airport to Seattle?

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


Best airlines flying from Toronto Pearson Intl Airport to Seattle

Compare and see reviews for airlines that fly from Toronto Pearson Intl Airport to Seattle with momondo
Airline
Rating
Free Cancellation
Price
WestJetPriceFrom C$ 312Free CancellationRating
7.2
2,826 reviews
Search WestJet flights
Alaska AirlinesPriceFrom C$ 330Free CancellationRating
8.0
9,968 reviews
Search Alaska Airlines flights
Air CanadaPriceFrom C$ 362Free CancellationRating
7.0
9,252 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 364Free CancellationRating
7.4
8,696 reviews
Search United Airlines flights
DeltaPriceFrom C$ 374Free CancellationRating
8.0
7,934 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom C$ 411Free CancellationRating
7.9
2,408 reviews
Search Hawaiian Airlines flights
American AirlinesPriceFrom C$ 428Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Alaska Airlines Flights From Toronto Pearson Intl Airport to Seattle

    Alaska Airlines flies from Toronto Pearson Intl Airport to Seattle around 1 time per week, with 9,968 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Toronto Pearson Intl Airport to Seattle in the last 72 hours was C$ 239 (round-trip), much lower than the average airfare cost of C$ 365 for Alaska Airlines flights on this route.

  • Hawaiian Airlines Flights From Toronto Pearson Intl Airport to Seattle

    Hawaiian Airlines is also a popular choice for this route. Hawaiian Airlines flight deals for Toronto Pearson Intl Airport to Seattle start from as low as C$ 297 round-trip, depending on your selected dates, with average Hawaiian Airlines deals seen on momondo around C$ 297. Hawaiian Airlines operates 7 flights to Seattle from Toronto Pearson Intl Airport in an average week. Users have rated it 7.9/10 across 2,408 reviews.


Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Marysville
SeaTac
Tacoma
Olympia
Kirkland
Tukwila
Kent
Lynnwood
Ellensburg
Redmond
Lakewood
Ocean Shores
Shoreline
Mukilteo
Renton
Gig Harbor
Cle Elum
Poulsbo
Centralia

Why use momondo?

Why should I use momondo to find a flight deal from Toronto to Seattle?

It is quick and easy to find Toronto to Seattle 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 Seattle that suits you.

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 in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Seattle from Toronto.

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.


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1 adult
Mon 5/5
Mon 12/5

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