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Cheap flights from Toronto Pearson Intl Airport to Seattle from £116

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 20/5. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
31 May — 7 Jun1
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 1 May 2026.

Fri 29/500:30
YYZ
-
SEA
2 stops12h 35m
Multiple Airlines
Wed 3/610:30
SEA
-
YYZ
2 stops10h 29m
Multiple Airlines
Deal found 26/4£197
Wed 13/512:29
YYZ
-
SEA
1 stop11h 14m
Delta
Fri 29/506:00
SEA
-
YYZ
1 stop12h 55m
Delta
Deal found 27/4£209
Thu 28/514:20
YYZ
-
SEA
1 stop11h 28m
Delta
Sat 6/609:35
SEA
-
YYZ
1 stop10h 24m
Delta
Deal found 27/4£213
Sat 6/606:30
YYZ
-
SEA
1 stop19h 49m
United Airlines
Mon 8/623:52
SEA
-
YYZ
1 stop7h 02m
United Airlines
Deal found 27/4£214
Sun 24/506:10
YYZ
-
SEA
1 stop11h 43m
Delta
Wed 27/509:30
SEA
-
YYZ
1 stop10h 29m
Delta
Deal found 1/5£215
Mon 18/514:20
YYZ
-
SEA
1 stop11h 28m
Delta
Fri 29/523:05
SEA
-
YYZ
1 stop11h 25m
Delta
Deal found 30/4£218
Sat 23/517:16
YYZ
-
SEA
1 stop10h 57m
United Airlines
Mon 1/622:40
SEA
-
YYZ
1 stop8h 14m
United Airlines
Deal found 29/4£219
Fri 12/600:30
YYZ
-
SEA
2 stops12h 35m
Air Canada
Sat 20/605:45
SEA
-
YYZ
2 stops10h 37m
Air Canada
Deal found 29/4£220
Sun 31/512:09
YYZ
-
SEA
1 stop11h 32m
Delta
Wed 10/609:05
SEA
-
YYZ
1 stop11h 09m
Delta
Deal found 27/4£225
Sat 20/606:30
YYZ
-
SEA
1 stop9h 28m
Delta
Sat 27/609:05
SEA
-
YYZ
1 stop11h 09m
Delta
Deal found 27/4£231

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 1 May 2026.

Round-trip from

£197

One-way from

£116

Popular in

July

Cheapest in

February

Average price

£256

Good one-way deal

£486 or less
WestJet
  • WestJet
  • 29/5-3/6
  • 4 total stops
  • 23h 04m total
  • Toronto to Seattle
Search Deals
Air Canada
  • Air Canada
  • 20/5
  • 2 total stops
  • 12h 35m total
  • Toronto to Seattle
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£40 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 May 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 1 May 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

Sat 30/5

06:10-14:53

1 stop11h 43m

Seattle/Tacoma Intl

Wed 3/6

09:35-22:59

1 stop10h 24m

£213

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 4/6

17:15-23:59

1 stop9h 44m

Seattle/Tacoma Intl

Tue 9/6

23:00-11:43

1 stop9h 43m

£215

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Fri 5/6

12:29-20:41

1 stop11h 12m

Seattle/Tacoma Intl

Sun 7/6

05:30-17:24

1 stop8h 54m

£238

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 20/6

17:45-22:05

1 stop7h 20m

Seattle/Tacoma Intl

Fri 26/6

06:00-21:59

1 stop12h 59m

£248

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 24/5

12:29-20:43

1 stop11h 14m

Seattle/Tacoma Intl

Mon 1/6

09:10-23:14

1 stop11h 04m

£256

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 7/6

13:30-18:45

1 stop8h 15m

Seattle/Tacoma Intl

Tue 9/6

09:05-23:14

1 stop11h 09m

£266

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 13/6

12:15-23:13

1 stop13h 58m

Seattle/Tacoma Intl

Sat 20/6

09:45-23:02

1 stop10h 17m

£270
Fastest return journey

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 4/6

06:00-13:23

2 stops10h 23m

Seattle/Tacoma Intl

Sun 7/6

05:30-17:24

1 stop8h 54m

£287

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 9/6

06:30-23:10

1 stop19h 40m

Seattle/Tacoma Intl

Wed 17/6

22:40-17:56

1 stop16h 16m

£288

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 28/5

17:16-01:29

1 stop11h 13m

Seattle/Tacoma Intl

Mon 22/6

05:45-01:08

2 stops16h 23m

£293

Flights are sorted by cheapest return flights first.

Deals found on 27/4

Showing 1-10 of 24 resultsSorted by cheapest first
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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?

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 July is currently the most expensive (average of £325). 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 1 May 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 2 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 9h 44m. Fly via Delta or United 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 (93%), Alaska Airlines (70%), Hawaiian Airlines( 70%).

  • 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 £488, our data shows the cheapest flight currently is £486. When looking at the most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), you can expect to pay £270 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 July is currently the most expensive (average of £325). 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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