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Cheap flights from Toronto Pearson Intl Airport to Seattle from C$ 236

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — SEA
16 Apr — 23 Apr1
1 adult

Cheapflights Tip: The best prices from Toronto Pearson Intl to Seattle/Tacoma Intl are usually found in February or January, booked 42 days in advance, depart on a Thursday or Tuesday and return on a Thursday

Cheap 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 11 April 2025.

Round-trip from

C$ 344

One-way from

C$ 236

Popular in

May

Cheapest in

February

Average price

C$ 491

Good round-trip deal

C$ 493 or less

Good one-way deal

C$ 312 or less
WestJet
  • WestJet
  • 3/5-10/5
  • 3 total stops
  • 22h 29m total
  • Toronto to Seattle
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WestJet
  • WestJet
  • 29/4
  • 2 total stops
  • 16h 43m total
  • Toronto to Seattle
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Highest demand for flights based on searches. 12% potential increase in price (C$ 108 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Toronto Pearson Intl to Seattle/Tacoma Intl.
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Find flight deals from Pearson Intl to Seattle

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 11 April 2025.

Sat 3/56:30 a.m.YYZ - SEA
1 stop9h 28mWestJet
Sat 10/51:50 p.m.SEA - YYZ
2 stops13h 01mWestJet
Deal found 10/4C$ 344
Tue 22/47:25 p.m.YYZ - SEA
1 stop19h 10mMultiple Airlines
Tue 29/412:30 p.m.SEA - YYZ
1 stop14h 25mMultiple Airlines
Deal found 9/4C$ 359
Wed 30/412:54 p.m.YYZ - SEA
1 stop10h 56mDelta
Tue 13/59:30 p.m.SEA - YYZ
1 stop11h 44mDelta
Deal found 9/4C$ 389
Thu 1/54:45 p.m.YYZ - SEA
Nonstop5h 14mAlaska Airlines
Mon 5/57:15 a.m.SEA - YYZ
Nonstop4h 45mAlaska Airlines
Deal found 10/4C$ 424
Sun 25/58:25 a.m.YYZ - SEA
Nonstop5h 20mAir Canada
Sat 7/67:20 a.m.SEA - YYZ
1 stop8h 20mAir Canada
Deal found 9/4C$ 431
Tue 13/58:25 a.m.YYZ - SEA
Nonstop5h 20mUnited Airlines
Tue 20/56:15 a.m.SEA - YYZ
1 stop14h 16mUnited Airlines
Deal found 10/4C$ 453
Sat 3/512:40 p.m.YYZ - SEA
1 stop12h 19mAmerican Airlines
Fri 9/51:10 a.m.SEA - YYZ
1 stop8h 20mAmerican Airlines
Deal found 10/4C$ 459

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 11 April 2025.
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

Sat 3/5

6:30 a.m.-12:58 p.m.

1 stop9h 28m

Seattle/Tacoma Intl

Sat 10/5

1:50 p.m.-5:51 a.m.

2 stops13h 01m

C$ 344

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 22/4

7:25 p.m.-11:35 a.m.

1 stop19h 10m

Seattle/Tacoma Intl

Tue 29/4

12:30 p.m.-5:55 a.m.

1 stop14h 25m

C$ 359

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 30/4

12:54 p.m.-8:50 p.m.

1 stop10h 56m

Seattle/Tacoma Intl

Wed 14/5

5:30 a.m.-4:40 p.m.

1 stop8h 10m

C$ 389

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/5

4:45 p.m.-6:59 p.m.

Nonstop5h 14m

Seattle/Tacoma Intl

Mon 5/5

7:15 a.m.-3:00 p.m.

Nonstop4h 45m

C$ 424

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sun 25/5

8:25 a.m.-10:45 a.m.

Nonstop5h 20m

Seattle/Tacoma Intl

Tue 10/6

1:45 p.m.-12:09 a.m.

1 stop7h 24m

C$ 431

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 13/5

8:25 a.m.-10:45 a.m.

Nonstop5h 20m

Seattle/Tacoma Intl

Tue 20/5

6:15 a.m.-11:31 p.m.

1 stop14h 16m

C$ 453

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Sat 3/5

12:40 p.m.-9:59 p.m.

1 stop12h 19m

Seattle/Tacoma Intl

Fri 9/5

1:10 a.m.-12:30 p.m.

1 stop8h 20m

C$ 459

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Tue 29/4

6:45 a.m.-8:28 p.m.

2 stops16h 43m

C$ 236

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Thu 1/5

7:21 p.m.-11:39 p.m.

1 stop7h 18m

C$ 244

TorontoSeattle

YYZ - SEA

YYZSEA

Toronto Pearson Intl

Wed 30/4

4:45 p.m.-6:59 p.m.

Nonstop5h 14m

C$ 246

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/4

Showing 1-10 of 13 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 4 April 2025.

Booking 42 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, January is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of C$ 261). Flying from Toronto Pearson Intl Airport to Seattle in December is currently the most expensive (average of C$ 353). 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 11 April 2025.

It’s optimal to fly from Toronto Pearson Intl Airport to Seattle at noon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Toronto Pearson Intl Airport to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Pearson Intl to Seattle. Price data was last updated on 30 March 2025.

Travelers seeking maximum savings on their Toronto Pearson Intl Airport to Seattle flight should consider departing on Tuesday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Toronto Pearson Intl Airport to Seattle

Explore weekly flight availability from Pearson Intl to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 11 April 2025.

The most flights from YYZ to SEA are scheduled on a Friday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 mm per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

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 11 April 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Toronto to Seattle. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,851 reviews
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,911 reviews
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,636 reviews
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,802 reviews
Alaska Airlines
8.0
Very good
9,851 reviews
Check prices

Crew

8.5

Entertainment

7.1

Comfort

7.9

Food

7.1

Overall

8.0

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 4 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.

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

    According to our current data, WestJet (C$ 344), Delta (C$ 389), and Air Canada (C$ 417) offers the cheapest pricing from Toronto Pearson Intl Airport to Seattle. WestJet is 34% 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 WestJet (C$ 236), Air Canada (C$ 243), and Delta (C$ 244).

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

    Consider Air Tahiti Nui (99%), Alaska Airlines (85%) or Hawaiian Airlines (85%) 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$ 252. On average you can expect to pay C$ 926. The most popular route, (Toronto Pearson Intl - Seattle/Tacoma Intl), can usually be booked for C$ 383.

  • 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, January is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to Seattle (average of C$ 261). Flying from Toronto Pearson Intl Airport to Seattle in December is currently the most expensive (average of C$ 353). 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 Toronto Pearson Intl Airport?

Book flights to Toronto Pearson Intl Airport if you plan to visit one of these locations
SeaTac
Tukwila
Marysville
Bothell
Leavenworth
Tacoma
Olympia
Lynnwood

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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 11 April 2025.
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 11 April 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapestC$ 318AverageC$ 467FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 335AverageC$ 532FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
Air CanadaCheapestC$ 369AverageC$ 649FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 371AverageC$ 690FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 411AverageC$ 575FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 435AverageC$ 560FlexibilityNo cancel feeOn-time71%
Search American 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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