Find flights
Deals
When to book
FAQs

Cheap flights from Toronto Pearson Intl Airport to Seattle from £112

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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
17 huhti — 24 huhti1
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 18 maaliskuu 2026.

to 30/419:30
YYZ
-
SEA
Nonstop5h 23m
Air Canada
to 7/519:20
SEA
-
YYZ
2 stops9h 50m
Air Canada
Deal found 16/3£166
ke 29/408:00
YYZ
-
SEA
1 stop14h 20m
Air Canada
ke 6/514:55
SEA
-
YYZ
1 stop7h 43m
Air Canada
Deal found 15/3£180
to 30/419:30
YYZ
-
SEA
Nonstop5h 23m
Multiple Airlines
to 7/507:55
SEA
-
YYZ
Nonstop4h 50m
Multiple Airlines
Deal found 16/3£197
pe 17/416:55
YYZ
-
SEA
Nonstop5h 30m
Alaska Airlines
ti 21/408:05
SEA
-
YYZ
Nonstop4h 40m
Alaska Airlines
Deal found 16/3£205
pe 1/519:22
YYZ
-
SEA
1 stop7h 32m
Delta
ma 4/523:59
SEA
-
YYZ
1 stop8h 32m
Delta
Deal found 18/3£209
ti 14/412:16
YYZ
-
SEA
1 stop9h 12m
Delta
ti 21/421:45
SEA
-
YYZ
1 stop9h 34m
Delta
Deal found 17/3£209
ke 29/416:55
YYZ
-
SEA
Nonstop5h 28m
Multiple Airlines
ke 6/508:00
SEA
-
YYZ
Nonstop4h 50m
Multiple Airlines
Deal found 15/3£216
ti 21/413:30
YYZ
-
SEA
1 stop11h 35m
Delta
la 9/509:05
SEA
-
YYZ
1 stop11h 09m
Delta
Deal found 17/3£218

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 18 maaliskuu 2026.

Round-trip from

£166

One-way from

£112

Popular in

July

Cheapest in

February

Average price

£240

Good one-way deal

£493 or less
Air Canada
  • Air Canada
  • 30/4-7/5
  • 2 total stops
  • 15h 13m total
  • Toronto to Seattle
Search Deals
Alaska Airlines
  • Alaska Airlines
  • 1/5
  • Nonstop
  • 5h 28m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£37 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 18 maaliskuu 2026.
Use the filters below to find and compare flights from Toronto Pearson Intl Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

pe 24/4

19:22-23:54

1 stop7h 32m

Seattle/Tacoma Intl

ma 11/5

23:59-11:36

1 stop8h 37m

£241

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

to 28/5

11:00-23:10

2 stops15h 10m

Seattle/Tacoma Intl

su 31/5

23:52-15:46

1 stop12h 54m

£268

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

ke 20/5

14:20-22:48

1 stop11h 28m

Seattle/Tacoma Intl

pe 24/7

23:05-13:25

1 stop11h 20m

£276

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

ke 22/7

14:15-22:05

1 stop10h 50m

Seattle/Tacoma Intl

ma 27/7

23:05-13:25

1 stop11h 20m

£315

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

pe 14/8

10:45-23:24

2 stops15h 39m

Seattle/Tacoma Intl

la 22/8

18:00-10:04

2 stops13h 04m

£335

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

pe 17/4

19:30-21:53

Nonstop5h 23m

Seattle/Tacoma Intl

ti 21/4

08:00-15:54

Nonstop4h 54m

£340

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

ti 7/4

10:45-23:27

2 stops15h 42m

Seattle/Tacoma Intl

la 11/4

15:48-09:54

2 stops15h 06m

£342
Fastest return journey

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

su 12/4

16:55-19:25

Nonstop5h 30m

Seattle/Tacoma Intl

su 19/4

08:05-15:45

Nonstop4h 40m

£397

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

pe 3/4

18:08-22:15

1 stop7h 07m

Seattle/Tacoma Intl

ma 6/4

19:59-09:05

2 stops10h 06m

£437

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

to 2/4

16:18-22:33

1 stop9h 15m

Seattle/Tacoma Intl

su 5/4

05:00-21:32

1 stop13h 32m

£456

Flights are sorted by cheapest return flights first.

Deals found on 13/3

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 13 March 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 £98). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of £177). 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 18 maaliskuu 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.

How much does it cost for a return flight from Toronto Pearson Intl Airport to Seattle?

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 3 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 United Airlines, Delta, or Alaska Airlines to get the fastest option. Toronto Pearson Intl Airport and Seattle are separated by a distance of 2054 mi. This flight may include one or multiple stops.

  • 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: Air Tahiti Nui (80%), Qatar Airways (79%), Alaska Airlines( 75%).

  • 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 £495, our data shows the cheapest flight currently is £493. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £197 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 £98). Flying from Toronto Pearson Intl Airport to Seattle in July is currently the most expensive (average of £177). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers 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?

Cheapflights makes it easy to find Pearson Intl to Seattle flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

Cheapflights simply makes it quick and affordable to book flights from Pearson Intl to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.