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Cheap flights from Toronto Pearson Intl Airport to Seattle from £98

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 28/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
2 Mar — 9 Mar1
1 adult
1 adult, Economy, 0 bags

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 31 January 2026.

Wed 8/416:55
YYZ
-
SEA
Nonstop5h 30m
Alaska Airlines
Tue 14/408:05
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 30/1£156
Wed 4/316:45
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Mon 9/307:55
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 30/1£162
Mon 2/316:45
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Wed 4/307:55
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 28/1£167
Mon 2/316:45
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Mon 30/308:09
SEA
-
YYZ
Nonstop4h 36m
Alaska Airlines
Deal found 30/1£168
Thu 26/216:45
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Thu 5/307:55
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 28/1£173
Sat 28/215:30
YYZ
-
SEA
1 stop10h 13m
United Airlines
Sat 7/323:47
SEA
-
YYZ
1 stop10h 14m
United Airlines
Deal found 31/1£175
Wed 4/317:30
YYZ
-
SEA
1 stop8h 13m
United Airlines
Mon 9/319:35
SEA
-
YYZ
1 stop8h 55m
United Airlines
Deal found 30/1£177
Wed 8/406:30
YYZ
-
SEA
1 stop11h 16m
United Airlines
Tue 14/407:00
SEA
-
YYZ
1 stop7h 56m
United Airlines
Deal found 30/1£181
Tue 10/316:45
YYZ
-
SEA
Nonstop5h 33m
Alaska Airlines
Thu 12/307:55
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 30/1£182
Wed 18/306:30
YYZ
-
SEA
1 stop12h 44m
United Airlines
Wed 25/319:10
SEA
-
YYZ
1 stop16h 52m
United Airlines
Deal found 28/1£185

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 31 January 2026.

Round-trip from

£156

One-way from

£98

Popular in

July

Cheapest in

February

Average price

£221

Good one-way deal

£479 or less
Alaska Airlines
  • Alaska Airlines
  • 8/4-14/4
  • Nonstop
  • 10h 10m total
  • Toronto to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 29/4
  • Nonstop
  • 5h 28m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£36 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a one-way flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 31 January 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

Wed 8/4

16:55-19:25

Nonstop5h 30m

Seattle/Tacoma Intl

Tue 14/4

08:05-15:45

Nonstop4h 40m

£156

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 4/3

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Mon 9/3

07:55-15:35

Nonstop4h 40m

£162

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 12/3

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Mon 16/3

07:55-15:35

Nonstop4h 40m

£167

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 2/3

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Wed 4/3

07:55-15:35

Nonstop4h 40m

£167

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 11/3

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Sun 15/3

07:55-15:35

Nonstop4h 40m

£167

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 26/2

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Thu 5/3

07:55-15:35

Nonstop4h 40m

£173

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 28/2

15:30-22:43

1 stop10h 13m

Seattle/Tacoma Intl

Sat 7/3

23:47-14:01

1 stop10h 14m

£175

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 4/3

17:30-22:43

1 stop8h 13m

Seattle/Tacoma Intl

Mon 9/3

19:35-07:30

1 stop8h 55m

£177

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 8/4

06:30-14:46

1 stop11h 16m

Seattle/Tacoma Intl

Tue 14/4

07:00-17:56

1 stop7h 56m

£181

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 10/3

16:45-19:18

Nonstop5h 33m

Seattle/Tacoma Intl

Thu 12/3

07:55-15:35

Nonstop4h 40m

£188

Flights are sorted by cheapest return flights first.

Deals found on 30/1

Showing 1-10 of 21 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 return 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 return flight from Pearson Intl to Seattle. Price data was last updated on 23 January 2026.

The price you pay for your flight from Toronto Pearson Intl Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 86 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 £95). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of £172). 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 31 January 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.

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?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Toronto Pearson Intl. On average, Seattle/Tacoma Intl has 6 inbound flights from Toronto Pearson Intl per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • 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 30m. Fly via Alaska Airlines to get the fastest option. Toronto Pearson Intl Airport and Seattle are separated by a distance of 2054 mi. All flights are typically direct.

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

    Before booking your flight to Seattle from Toronto Pearson Intl Airport, check out the most reliable airlines to get you to your destination on time: Qatar Airways (79%), Alaska Airlines (59%), Hawaiian Airlines( 59%).

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

    While on average a flight from Toronto Pearson Intl Airport to Seattle is generally £480, our data shows the cheapest flight currently is £479. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £266 for that flight.

  • 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 holiday 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 £95). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of £172). 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
Tacoma
Federal Way
SeaTac

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

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Pearson Intl to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Pearson Intl to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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