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Cheap flights from Toronto Pearson Intl Airport to Seattle from C$ 182

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/3. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
11 Mar — 18 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Toronto Pearson Intl to Seattle/Tacoma Intl are usually found in February or January, booked 86 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from Pearson Intl to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Pearson Intl to Seattle
Explore the most affordable flight options available from Pearson Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 February 2026.

Tue 24/34:30 p.m.
YYZ
-
SEA
2 stops9h 27m
Air Canada
Tue 31/38:00 a.m.
SEA
-
YYZ
Nonstop4h 54m
Air Canada
Deal found 7/2C$ 283
Tue 24/34:45 p.m.
YYZ
-
SEA
Nonstop5h 30m
Alaska Airlines
Tue 31/38:09 a.m.
SEA
-
YYZ
Nonstop4h 36m
Alaska Airlines
Deal found 7/2C$ 287
Tue 3/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Sat 7/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 8/2C$ 291
Sun 1/34:45 p.m.
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Tue 3/37:55 a.m.
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 8/2C$ 302
Sun 1/37:50 p.m.
YYZ
-
SEA
Nonstop5h 26m
Air Canada
Mon 9/38:00 a.m.
SEA
-
YYZ
Nonstop4h 43m
Air Canada
Deal found 7/2C$ 303
Fri 6/37:45 a.m.
YYZ
-
SEA
1 stop9h 34m
WestJet
Mon 9/33:10 p.m.
SEA
-
YYZ
2 stops11h 48m
WestJet
Deal found 8/2C$ 305
Thu 4/61:30 p.m.
YYZ
-
SEA
1 stop8h 15m
WestJet
Sun 7/67:35 p.m.
SEA
-
YYZ
1 stop8h 20m
WestJet
Deal found 8/2C$ 306

Find flight deals from Pearson Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Pearson Intl (YYZ) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 9 February 2026.

Round-trip from

C$ 283

One-way from

C$ 182

Popular in

July

Cheapest in

February

Average price

C$ 340

Good round-trip deal

C$ 391 or less

Good one-way deal

C$ 275 or less
Air Canada
  • Air Canada
  • 24/3-31/3
  • 3 total stops
  • 16h 43m total
  • Toronto to Seattle
Search Deals
WestJet
  • WestJet
  • 8/3
  • 1 total stop
  • 9h 34m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals
Price to beat on a round-trip flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
Search Deals
Price to beat on a one-way flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pearson Intl to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 February 2026.
Use the filters below to find and compare flights from Toronto Pearson Intl Airport to Seattle that are best for you.

Fly from

Pearson Intl

Fly to

Seattle

Route

Depart

Return

Price

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 3/3

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

Seattle/Tacoma Intl

Sat 7/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 291

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 27/2

4:45 p.m.-7:18 p.m.

Nonstop5h 33m

Seattle/Tacoma Intl

Tue 3/3

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

C$ 303

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 25/3

4:10 p.m.-10:59 p.m.

1 stop9h 49m

Seattle/Tacoma Intl

Wed 8/4

7:00 a.m.-7:37 p.m.

1 stop9h 37m

C$ 314

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 24/4

6:10 a.m.-7:42 p.m.

1 stop16h 32m

Seattle/Tacoma Intl

Fri 24/4

11:35 p.m.-2:24 p.m.

1 stop11h 49m

C$ 318

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 8/4

2:45 p.m.-10:37 p.m.

1 stop10h 52m

Seattle/Tacoma Intl

Wed 22/4

11:59 p.m.-9:54 a.m.

1 stop6h 55m

C$ 325

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 7/5

5:15 p.m.-11:57 p.m.

1 stop9h 42m

Seattle/Tacoma Intl

Sat 16/5

11:14 p.m.-10:04 a.m.

1 stop7h 50m

C$ 327

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 27/2

8:45 a.m.-10:43 p.m.

1 stop16h 58m

Seattle/Tacoma Intl

Fri 6/3

7:10 p.m.-3:02 p.m.

1 stop16h 52m

C$ 327

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 24/3

6:45 a.m.-6:04 p.m.

2 stops14h 19m

Seattle/Tacoma Intl

Tue 31/3

11:59 p.m.-9:54 a.m.

1 stop6h 55m

C$ 327

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 5/4

10:15 a.m.-7:00 p.m.

1 stop11h 45m

Seattle/Tacoma Intl

Mon 6/4

11:35 p.m.-2:24 p.m.

1 stop11h 49m

C$ 327

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 1/4

1:00 p.m.-9:06 p.m.

2 stops11h 06m

Seattle/Tacoma Intl

Tue 14/4

11:59 p.m.-11:49 a.m.

1 stop8h 50m

C$ 336

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/2

Showing 1-10 of 22 results
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Best time to book a flight from Pearson Intl to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Pearson Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Toronto Pearson Intl Airport to Seattle

How far ahead should I book a flight from Toronto Pearson Intl Airport to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Pearson Intl to Seattle. Price data was last updated on 6 February 2026.

Booking 86 days in advance of your planned departure date is, on average, the best time to get cheap flights from Toronto Pearson Intl Airport to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Toronto Pearson Intl Airport to Seattle?

Currently, December is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of C$ 179). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of C$ 323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YYZ to SEA?

Find hourly flight availability from Pearson Intl to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 February 2026.

When flying from Toronto Pearson Intl Airport to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 9 February 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andUnited Airlines from Toronto Pearson Intl Airport to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,865 reviews
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,174 reviews
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
United Airlines
7.4
Good
9,259 reviews
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
WestJet
7.2
Good
3,256 reviews
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Air Canada
7.1
Good
10,698 reviews
Alaska Airlines
8.0
Very good
11,865 reviews
Check prices

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Crew

8.5

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Pearson Intl to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Seattle from Toronto Pearson Intl?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Toronto Pearson Intl to Seattle. You should not have trouble finding flights to Seattle/Tacoma Intl from Toronto Pearson Intl; the airport handles an average of 5 inbound flights from Toronto Pearson Intl per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Seattle airport from Toronto Pearson Intl. It is only a 18.4 km journey from Seattle/Tacoma Intl (SEA) to Seattle’s city centre.

  • How long is the flight from Toronto Pearson Intl Airport to Seattle?

    There are many flights that can get you from Toronto Pearson Intl Airport to Seattle in 5h 33m. Fly via Alaska Airlines or United Airlines to get the fastest option. Toronto Pearson Intl Airport and Seattle are separated by a distance of 3306 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Toronto Pearson Intl Airport to Seattle round-trip?

    According to our current data, Delta (C$ 251), Alaska Airlines (C$ 271), and WestJet (C$ 274) offers the cheapest pricing from Toronto Pearson Intl Airport to Seattle. Delta is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Toronto Pearson Intl Airport to Seattle one-way?

    The cheapest airlines for a one-way flight from Toronto Pearson Intl Airport to Seattle are Delta (C$ 151), Alaska Airlines (C$ 167), and WestJet (C$ 176).

  • What are the most reliable airlines from Toronto Pearson Intl Airport to Seattle?

    Consider Qatar Airways (48%), Alaska Airlines (48%) or Hawaiian Airlines (48%) when booking your flight. These represent the most reliable airlines when flying from Toronto Pearson Intl Airport to Seattle.

  • What are the cheapest flights from Toronto Pearson Intl Airport to Seattle?

    The cheapest flight price from Toronto Pearson Intl Airport to Seattle is C$ 161. On average you can expect to pay C$ 844. The most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), can usually be booked for C$ 302.

  • Can I find deals for flights from Pearson Intl to Seattle that include hotel bookings?

    Yes. In addition to deals on Pearson Intl to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pearson Intl to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pearson Intl to Seattle.

  • Can I find deals for business class flights from Pearson Intl to Seattle?

    Yes. Cheapflights offers flight deals from Pearson Intl to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Toronto Pearson Intl Airport to Seattle?

    Currently, December is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of C$ 179). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of C$ 323). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
SeaTac
Mukilteo
Tacoma
Kent
Bothell
Cashmere
Tukwila
Olympia
Renton
Marysville
Lynnwood
Kirkland

Browse thousands of different options on Cheapflights for your next trip

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Fly from Pearson Intl to Seattle on these airlines

Choose from the following airlines for your flight from Pearson Intl to Seattle. Flights are based on user searches made on Cheapflights and were last updated on 9 February 2026.
Air Canada flights from Toronto Pearson Intl to Seattle/Tacoma Intl
WestJet flights from Toronto Pearson Intl to Seattle/Tacoma Intl
United Airlines flights from Toronto Pearson Intl to Seattle/Tacoma Intl

Top 6 airlines flying from Pearson Intl to Seattle

Discover the top 6 airlines that operate flights from Pearson Intl to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 9 February 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapestC$ 251AverageC$ 484FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Alaska AirlinesCheapestC$ 271AverageC$ 466FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
WestJetCheapestC$ 274AverageC$ 370FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Air CanadaCheapestC$ 323AverageC$ 583FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 342AverageC$ 614FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Hawaiian AirlinesCheapestC$ 406AverageC$ 459FlexibilityNo cancel feeOn-time85%
Search Hawaiian Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Pearson Intl to Seattle?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Seattle from Pearson Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Pearson Intl to Seattle?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Seattle from Pearson Intl.

Can Cheapflights find flights from Pearson Intl to Seattle with no change fees?

Certainly. Search results for flights to Seattle from Pearson Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Pearson Intl to Seattle become cheaper?

Yes, Cheapflights offers price alerts on Pearson Intl to Seattle flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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