Find flights
Deals
When to book
FAQs

Cheap flights from Toronto Pearson Intl Airport to Seattle from £150

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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
16 Jul — 23 Jul1
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 16 June 2026.

Thu 9/712:00
YYZ
-
SEA
2 stops12h 00m
WestJet
Mon 13/707:00
SEA
-
YYZ
2 stops11h 10m
WestJet
Deal found 16/6£249
Thu 23/712:00
YYZ
-
SEA
2 stops12h 00m
WestJet
Mon 27/707:00
SEA
-
YYZ
1 stop7h 10m
WestJet
Deal found 14/6£254
Sun 13/900:30
YYZ
-
SEA
2 stops12h 22m
Air Canada
Fri 18/919:20
SEA
-
YYZ
2 stops9h 47m
Air Canada
Deal found 14/6£259
Thu 23/712:00
YYZ
-
SEA
1 stop9h 45m
WestJet
Tue 28/719:35
SEA
-
YYZ
1 stop7h 10m
WestJet
Deal found 14/6£260
Fri 20/1116:45
YYZ
-
SEA
Nonstop5h 28m
Alaska Airlines
Mon 23/1107:55
SEA
-
YYZ
Nonstop4h 44m
Alaska Airlines
Deal found 12/6£267
Mon 14/920:00
YYZ
-
SEA
1 stop16h 40m
WestJet
Fri 18/910:30
SEA
-
YYZ
1 stop9h 15m
WestJet
Deal found 14/6£270
Sat 3/1010:45
YYZ
-
SEA
1 stop9h 52m
Multiple Airlines
Mon 5/1008:00
SEA
-
YYZ
Nonstop4h 50m
Multiple Airlines
Deal found 16/6£278
Sat 5/1214:50
YYZ
-
SEA
1 stop8h 20m
United Airlines
Sat 5/1222:45
SEA
-
YYZ
1 stop10h 03m
United Airlines
Deal found 12/6£279

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 16 June 2026.

Round-trip from

£249

One-way from

£150

Popular in

June

Cheapest in

February

Average price

£332

Good one-way deal

£490 or less
WestJet
  • WestJet
  • 9/7-13/7
  • 4 total stops
  • 23h 10m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 12/10
  • 2 total stops
  • 12h 22m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 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 16 June 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
Fastest return journey

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 13/11

14:50-20:10

1 stop8h 20m

Seattle/Tacoma Intl

Sun 15/11

07:45-15:25

Nonstop4h 40m

£278

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 13/11

08:50-20:10

2 stops14h 20m

Seattle/Tacoma Intl

Sun 15/11

05:00-16:09

1 stop8h 09m

£283

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Mon 14/9

20:00-11:03

1 stop18h 03m

Seattle/Tacoma Intl

Fri 18/9

17:00-15:14

2 stops19h 14m

£284

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 20/8

14:24-22:05

1 stop10h 41m

Seattle/Tacoma Intl

Wed 2/9

09:10-23:57

1 stop11h 47m

£295

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 18/8

17:50-22:05

1 stop7h 15m

Seattle/Tacoma Intl

Sat 22/8

05:30-15:20

1 stop6h 50m

£295

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 12/8

17:50-22:05

1 stop7h 15m

Seattle/Tacoma Intl

Thu 20/8

07:16-21:59

1 stop11h 43m

£326

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 2/7

19:24-23:59

1 stop7h 35m

Seattle/Tacoma Intl

Sat 11/7

09:05-23:13

1 stop11h 08m

£326

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 12/7

06:10-22:42

1 stop19h 32m

Seattle/Tacoma Intl

Tue 21/7

17:15-09:54

1 stop13h 39m

£355

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 11/7

14:55-23:05

1 stop11h 10m

Seattle/Tacoma Intl

Tue 21/7

06:02-17:28

1 stop8h 26m

£376

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 18/8

14:55-23:05

1 stop11h 10m

Seattle/Tacoma Intl

Wed 26/8

07:08-22:54

2 stops12h 46m

£383

Flights are sorted by cheapest return flights first.

Deals found on 14/6

Showing 1-10 of 23 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?

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 85 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, February is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of £177). Flying from Toronto Pearson Intl Airport to Seattle in June is currently the most expensive (average of £332). 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 16 June 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 1 inbound flight 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 9h 21m. Fly via United Airlines or Delta 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: Qatar Airways (100%), Alaska Airlines (90%), Hawaiian Airlines( 80%).

  • 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 £492, our data shows the cheapest flight currently is £490. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £284 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, February is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of £177). Flying from Toronto Pearson Intl Airport to Seattle in June is currently the most expensive (average of £332). 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.