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Cheap flights from Seattle to Toronto Pearson Intl Airport from C$ 185

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YYZ
17 Jun — 24 Jun1
1 adult

Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Toronto Pearson Intl are usually found in January or March, booked 70 days in advance, depart on a Thursday or Sunday and return on a Thursday

Cheap flight deals from Seattle to Pearson Intl

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Pearson Intl (YYZ). 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 12 June 2025.

Round-trip from

C$ 383

One-way from

C$ 185

Popular in

June

Cheapest in

January

Average price

C$ 729

Good round-trip deal

C$ 511 or less

Good one-way deal

C$ 275 or less
WestJet
  • WestJet
  • 25/7-29/7
  • 4 total stops
  • 26h 07m total
  • Seattle to Toronto
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WestJet
  • WestJet
  • 7/7
  • 2 total stops
  • 19h 46m total
  • Seattle to Toronto
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Highest demand for flights based on searches. 10% potential increase in price (C$ 94 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 June 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Toronto Pearson Intl.
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Find flight deals from Seattle to Pearson Intl

Cheapest flights from Seattle to Pearson Intl
Explore the most affordable flight options available from Seattle to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 June 2025.

Fri 25/78:40 a.m.SEA - YYZ
2 stops12h 53mWestJet
Tue 29/79:00 a.m.YYZ - SEA
2 stops13h 14mWestJet
Deal found 10/6C$ 383
Sat 8/117:55 a.m.SEA - YYZ
Nonstop4h 40mAlaska Airlines
Wed 12/114:45 p.m.YYZ - SEA
Nonstop5h 20mAlaska Airlines
Deal found 11/6C$ 391
Fri 7/117:13 p.m.SEA - YYZ
1 stop16h 49mUnited Airlines
Fri 14/115:55 p.m.YYZ - SEA
1 stop10h 04mUnited Airlines
Deal found 10/6C$ 412
Mon 4/82:55 p.m.SEA - YYZ
2 stops12h 14mAir Canada
Mon 18/86:15 a.m.YYZ - SEA
2 stops11h 01mAir Canada
Deal found 12/6C$ 413
Mon 4/87:35 p.m.SEA - YYZ
1 stop8h 17mMultiple Airlines
Tue 19/84:45 p.m.YYZ - SEA
Nonstop5h 24mMultiple Airlines
Deal found 12/6C$ 416
Mon 3/111:24 a.m.SEA - YYZ
1 stop7h 56mAmerican Airlines
Thu 13/116:20 p.m.YYZ - SEA
1 stop7h 55mAmerican Airlines
Deal found 11/6C$ 428
Mon 7/711:50 p.m.SEA - YYZ
1 stop6h 05mDelta
Sun 13/76:30 a.m.YYZ - SEA
1 stop7h 05mDelta
Deal found 11/6C$ 438

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Pearson Intl 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 12 June 2025.
Use the filters below to find and compare flights from Seattle to Toronto Pearson Intl Airport that are best for you.

Fly from

Seattle

Fly to

Pearson Intl

Route

Depart

Return

Price

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 25/7

8:40 a.m.-12:33 a.m.

2 stops12h 53m

Toronto Pearson Intl

Tue 29/7

9:00 a.m.-7:14 p.m.

2 stops13h 14m

C$ 383

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 8/11

7:55 a.m.-3:35 p.m.

Nonstop4h 40m

Toronto Pearson Intl

Wed 12/11

4:45 p.m.-7:05 p.m.

Nonstop5h 20m

C$ 391

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 7/11

2:07 p.m.-11:59 p.m.

1 stop6h 52m

Toronto Pearson Intl

Fri 14/11

5:55 p.m.-12:59 a.m.

1 stop10h 04m

C$ 412

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 4/8

2:55 p.m.-6:09 a.m.

2 stops12h 14m

Toronto Pearson Intl

Mon 18/8

6:15 a.m.-2:16 p.m.

2 stops11h 01m

C$ 413

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 4/8

7:35 p.m.-6:52 a.m.

1 stop8h 17m

Toronto Pearson Intl

Tue 19/8

4:45 p.m.-7:09 p.m.

Nonstop5h 24m

C$ 416

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 3/11

1:24 a.m.-12:20 p.m.

1 stop7h 56m

Toronto Pearson Intl

Thu 13/11

6:20 p.m.-11:15 p.m.

1 stop7h 55m

C$ 428

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 7/7

11:50 p.m.-8:55 a.m.

1 stop6h 05m

Toronto Pearson Intl

Sun 13/7

6:30 a.m.-10:35 a.m.

1 stop7h 05m

C$ 438

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Mon 7/7

7:05 a.m.-5:51 a.m.

2 stops19h 46m

C$ 185

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Fri 20/6

5:14 p.m.-9:19 a.m.

2 stops13h 05m

C$ 189

SeattleToronto

SEA - YYZ

SEAYYZ

Seattle/Tacoma Intl

Sat 21/6

5:20 a.m.-11:30 p.m.

2 stops15h 10m

C$ 202

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 15 results
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Best time to book a flight from Seattle to Pearson Intl

Have a flexible travel schedule? Discover the best time to fly to Pearson Intl from Seattle 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 Seattle to Toronto Pearson Intl Airport

How far ahead should I book a flight from Seattle to Toronto Pearson Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Pearson Intl. Price data was last updated on 9 June 2025.

The best time to book flights from Seattle to Toronto Pearson Intl Airport is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Seattle to Toronto Pearson Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto Pearson Intl Airport (average of C$ 167). Flying from Seattle to Toronto Pearson Intl Airport in July is currently the most expensive (average of C$ 255). 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 SEA to YYZ?

Find hourly flight availability from Seattle to Pearson Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 June 2025.

It’s optimal to fly from Seattle to Toronto Pearson Intl Airport in the afternoon. By choosing this option you can save up to 56% on the cost of your flight, compared to a flight in the morning.

Weekly flight availability from Seattle to Toronto Pearson Intl Airport

Explore weekly flight availability from Seattle to Pearson Intl. 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 12 June 2025.

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

Rainfall in Pearson Intl by month

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

In terms of precipitation, rainfall in Toronto Pearson Intl Airport ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Toronto Pearson Intl Airport when rainfall is around 51.0 mm.

Temperature in Pearson Intl by month

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

If weather is an important factor for your trip to Toronto Pearson Intl Airport, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Pearson Intl

Get insights into the airlines that provide service to Pearson Intl. 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 Pearson Intl. Reviews last updated 12 June 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta and United Airlines from Seattle to Toronto by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
United Airlines
7.4
Good
8,792 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
WestJet
7.2
Good
2,869 reviews
Alaska Airlines
8.0
Very good
10,000 reviews
Check prices

Comfort

7.8

Food

7.1

Crew

8.5

Entertainment

7.1

Boarding

8.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Pearson Intl. 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 from for flights from Seattle to Toronto Pearson Intl?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Toronto Pearson Intl. On average, Seattle/Tacoma Intl has 5 outbound flights to Toronto Pearson Intl per day from 3 airlines. Seattle/Tacoma Intl is conveniently located just 18.4 km from Seattle’s city centre.

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

    Flying on WestJet is currently your cheapest option to Toronto Pearson Intl Airport, with prices starting at C$ 383. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and United Airlines, with the lowest prices starting at C$ 391 and C$ 412, respectively. WestJet is priced at 33% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Toronto Pearson Intl Airport one-way?

    One-way options have recently been found by users for as low as C$ 185 on WestJet. Other airlines that offer cheap prices include United Airlines from C$ 189 and Air Canada from C$ 202 one-way.

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

    Consider Qatar Airways (93%), Alaska Airlines (92%) or Hawaiian Airlines (92%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Toronto Pearson Intl Airport.

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

    Looking at all options, your cheapest flight can be booked for C$ 183. While the most popular route (Seattle/Tacoma Intl - Toronto Pearson Intl) can be booked for C$ 335 on average our data indicates C$ 511 when flying from Seattle to Toronto Pearson Intl Airport.

  • Can I find deals for flights from Seattle to Pearson Intl that include hotel bookings?

    Yes. In addition to deals on Seattle to Pearson Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Pearson Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Pearson Intl.

  • Can I find deals for business class flights from Seattle to Pearson Intl?

    Yes. Cheapflights offers flight deals from Seattle to Pearson Intl 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 Seattle to Toronto Pearson Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Toronto Pearson Intl Airport (average of C$ 167). Flying from Seattle to Toronto Pearson Intl Airport in July is currently the most expensive (average of C$ 255). 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?

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Alternative routes for Seattle to Pearson Intl

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Pearson Intl flights
Seattle to Region of Waterloo Intl flights
Seattle to Hamilton flights
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Top 3 airlines flying from Seattle to Pearson Intl

Discover the top 3 airlines that operate flights from Seattle to Pearson Intl. 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 12 June 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 189AverageC$ 701FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 294AverageC$ 490FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Alaska AirlinesCheapestC$ 388AverageC$ 681FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Seattle to Pearson Intl?

Deals for Seattle to Pearson Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Seattle to Pearson Intl for you. Better yet — we are completely free to use.

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

Yes! Cheapflights helps users easily find flights from Seattle to Pearson Intl with no change fees.

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Of course! You can now track prices for flights from Seattle to Pearson Intl 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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