How long is the flight from St. Louis to Toronto Pearson Intl Airport?

Airlines like American Airlines fly from St. Louis to Toronto Pearson Intl Airport in about 9h 35m. The time it takes to get you to your destination can typically vary by up to . The distance from St. Louis to Toronto Pearson Intl Airport is about 653 mi.

What are the cheapest airlines flying from St. Louis to Toronto Pearson Intl Airport round-trip?

Flying on United Airlines is currently your cheapest option to Toronto Pearson Intl Airport, with prices starting at $199. Additional round-trip tickets that might be worth considering are offered by Air Canada and American Airlines, with the lowest prices starting at $214 and $270, respectively. United Airlines is priced at 59% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from St. Louis to Toronto Pearson Intl Airport one-way?

The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $177. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from St. Louis to Toronto Pearson Intl Airport for a low price.

In terms of precipitation, rainfall in Toronto Pearson Intl Airport ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Toronto Pearson Intl Airport when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

What are the cheapest flights from St. Louis to Toronto Pearson Intl Airport?

The cheapest flight price from St. Louis to Toronto Pearson Intl Airport is $255. On average you can expect to pay $1,274. The most popular route, (Lambert-St Louis - Toronto Pearson Intl), can usually be booked for $254.

What are the most reliable airlines from St. Louis to Toronto Pearson Intl Airport?

Before booking your flight to Toronto Pearson Intl Airport from St. Louis, check out the most reliable airlines to get you to your destination on time: Air Canada (94%), Jazz (94%), United Airlines( 94%).

What are the most popular airlines that fly from St. Louis to Toronto Pearson Intl Airport?

Consider Air Canada, United Airlines or American Airlines when booking your flight. These represent the most popular airlines when flying from St. Louis to Toronto Pearson Intl Airport.

Most accurate provider : When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Toronto Pearson Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Toronto Pearson Intl Airport flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Toronto Pearson Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airport do you fly from for flights from St. Louis to Toronto Pearson Intl?

If you book a flight to Toronto Pearson Intl from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There is 1 flight from Lambert-St Louis to Toronto Pearson Intl per day from 3 different airlines.

Can I find deals for flights from St. Louis to Pearson Intl that include hotel bookings?

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

How can I find direct flights from St. Louis to Pearson Intl?

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

Can I find deals for business class flights from St. Louis to Pearson Intl?

Yes. Cheapflights offers flight deals from St. Louis 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.

$73+ Flights from St. Louis to Toronto Pearson Intl Airport

Q: How much does it cost to fly round-trip from St. Louis to Toronto Pearson Intl Airport?

Airfare is below average for this route at the moment. St. Louis to Toronto Pearson Intl Airport flights typically cost between $309 and $671 in December. The cheapest round-trip price found within the last 3 days was $229 on Multiple Airlines (Dec 14-Dec 16).

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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Cheapflights Tip: The best prices from Lambert-St Louis to Toronto Pearson Intl are usually found in January or May, booked 12 days in advance, depart on a Tuesday or Sunday and return on a Saturday

Cheap flight deals from St. Louis to Pearson Intl

Cheapest flights from St. Louis to Pearson Intl
Explore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sun 1/118:00 pmYYZ - STL

1 stop13h 05mMultiple Airlines

Deal found 12/2

$327

Sat 12/133:30 pmSTL - YYZ

1 stop7h 41mMultiple Airlines

Sun 12/148:00 pmYYZ - STL

1 stop13h 59mMultiple Airlines

Deal found 12/2

$352

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$359

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sat 12/133:25 pmYYZ - STL

1 stop8h 08mMultiple Airlines

Deal found 12/1

$361

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$362

Mon 12/89:54 amSTL - YYZ

1 stop13h 31mMultiple Airlines

Sat 12/133:25 pmYYZ - STL

1 stop8h 08mMultiple Airlines

Deal found 12/1

$371

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Tue 12/97:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/1

$374

Best flights from St. Louis to Pearson Intl
Discover carefully curated flight deals from St. Louis to Pearson Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 3, 2025.

Thu 1/83:43 pmSTL - YYZ

2 stops22h 34mMultiple Airlines

Mon 1/127:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/1

$289

Mon 1/126:00 amSTL - YYZ

1 stop9h 35mAmerican Airlines

Mon 1/197:04 pmYYZ - STL

1 stop16h 16mAmerican Airlines

Deal found 12/2

$379

Thu 1/83:45 pmSTL - YYZ

1 stop7h 13mDelta

Mon 1/127:50 amYYZ - STL

1 stop5h 43mDelta

Deal found 11/30

$435

Mon 1/262:50 pmSTL - YYZ

1 stop23h 45mAlaska Airlines

Thu 1/294:45 pmYYZ - STL

1 stop31h 01mAlaska Airlines

Deal found 12/2

$447

Sat 2/144:05 pmSTL - YYZ

Nonstop2h 01mAir Canada

Sat 2/212:00 pmYYZ - STL

Nonstop2h 29mAir Canada

Deal found 12/2

$468

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$359

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Tue 12/97:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/1

$374

Mon 12/83:30 pmSTL - YYZ

1 stop7h 55mMultiple Airlines

Thu 12/117:15 amYYZ - STL

2 stops16h 18mMultiple Airlines

Deal found 12/1

$377

Sat 12/67:43 pmSTL - YYZ

2 stops17h 37mMultiple Airlines

Fri 12/1212:50 pmYYZ - STL

1 stop10h 43mMultiple Airlines

Deal found 12/1

$396

Sat 12/67:43 pmSTL - YYZ

2 stops17h 37mMultiple Airlines

Sat 12/133:25 pmYYZ - STL

1 stop8h 08mMultiple Airlines

Deal found 12/1

$405

Sat 12/67:43 pmSTL - YYZ

2 stops17h 37mMultiple Airlines

Wed 12/107:15 amYYZ - STL

1 stop16h 18mMultiple Airlines

Deal found 12/1

$443

Sat 12/67:43 pmSTL - YYZ

2 stops17h 37mMultiple Airlines

Thu 12/117:55 pmYYZ - STL

1 stop17h 17mMultiple Airlines

Deal found 12/1

$461

Last-minute flights from St. Louis to Pearson Intl
Discover last-minute flight deals from St. Louis to Pearson Intl. Data last updated December 3, 2025 and is based on user searches.

Tue 12/93:30 pmSTL - YYZ

1 stop21h 43mMultiple Airlines

Sun 1/118:00 pmYYZ - STL

1 stop13h 05mMultiple Airlines

Deal found 12/2

$327

Thu 1/85:11 pmSTL - YYZ

1 stop20h 09mMultiple Airlines

Mon 1/125:15 pmYYZ - STL

1 stop30h 19mMultiple Airlines

Deal found 12/1

$255

Mon 1/128:50 amSTL - YYZ

1 stop14h 35mMultiple Airlines

Mon 1/197:00 amYYZ - STL

2 stops48h 51mMultiple Airlines

Deal found 12/1

$269

Mon 1/2610:16 amSTL - YYZ

1 stop12h 55mMultiple Airlines

Wed 1/287:15 amYYZ - STL

1 stop17h 18mMultiple Airlines

Deal found 12/1

$241

Tue 1/275:42 pmSTL - YYZ

1 stop19h 34mMultiple Airlines

Thu 1/297:10 amYYZ - STL

1 stop17h 23mMultiple Airlines

Deal found 12/1

$251

One-way flights from St. Louis to Pearson Intl
Search for one-way flight options from St. Louis to Pearson Intl. Find affordable one-way fares based on user searches. Data last updated December 3, 2025.

Wed 1/215:42 pmSTL - YYZ

1 stop19h 38mMultiple Airlines

Deal found 12/1

$73

Sun 12/143:30 pmSTL - YYZ

1 stop21h 50mMultiple Airlines

Deal found 12/1

$87

Mon 12/153:30 pmSTL - YYZ

1 stop21h 50mMultiple Airlines

Deal found 12/1

$114

Fri 1/165:11 pmSTL - YYZ

1 stop20h 09mMultiple Airlines

Deal found 12/2

$129

Sat 1/173:43 pmSTL - YYZ

3 stops30h 28mMultiple Airlines

Deal found 12/1

$140

Wed 12/244:27 pmSTL - YYZ

2 stops26h 46mMultiple Airlines

Deal found 11/30

$152

Find flight deals from St. Louis to Pearson Intl

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$229 (Kiwi.com)
One-way from	$73 (Trip.com)
Popular in	October
Cheapest in	January
Average price	$467
Good round-trip deal	$578 or less
Good one-way deal	$399 or less

Provider with most accurate pricing for Lambert-St Louis-Toronto Pearson Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Lambert-St Louis-Toronto Pearson Intl flights.

Search Deals

From Lambert-St Louis to Toronto Pearson Intl

Search Deals

One-way flight from Lambert-St Louis to Toronto Pearson Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($85 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Lambert-St Louis to Toronto Pearson Intl.

Search Deals

Price to beat on a one-way flight from Lambert-St Louis to Toronto Pearson Intl.

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Toronto Pearson Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 1/8

3:43 pm-3:17 pm

2 stops22h 34m

Toronto Pearson Intl

Mon 1/12

7:15 am-10:33 pm

1 stop16h 18m

$289

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 12/9

3:30 pm-2:13 pm

1 stop21h 43m

Toronto Pearson Intl

Fri 12/12

12:50 pm-10:33 pm

1 stop10h 43m

$359

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/8

3:30 pm-12:25 am

1 stop7h 55m

Toronto Pearson Intl

Tue 12/9

7:15 am-10:33 pm

1 stop16h 18m

$374

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/8

3:30 pm-12:25 am

1 stop7h 55m

Toronto Pearson Intl

Thu 12/11

7:15 am-10:33 pm

2 stops16h 18m

$377

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 1/12

6:00 am-4:35 pm

1 stop9h 35m

Toronto Pearson Intl

Mon 1/19

7:04 pm-10:20 am

1 stop16h 16m

$379

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 12/6

7:43 pm-2:20 pm

2 stops17h 37m

Toronto Pearson Intl

Fri 12/12

12:50 pm-10:33 pm

1 stop10h 43m

$396

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 12/6

7:43 pm-2:20 pm

2 stops17h 37m

Toronto Pearson Intl

Sat 12/13

3:25 pm-10:33 pm

1 stop8h 08m

$405

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 1/8

3:45 pm-11:58 pm

1 stop7h 13m

Toronto Pearson Intl

Mon 1/12

7:50 am-12:33 pm

1 stop5h 43m

$435

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 12/6

7:43 pm-2:20 pm

2 stops17h 37m

Toronto Pearson Intl

Wed 12/10

7:15 am-10:33 pm

1 stop16h 18m

$443

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 1/26

2:50 pm-3:35 pm

1 stop23h 45m

Toronto Pearson Intl

Thu 1/29

4:45 pm-10:46 pm

1 stop31h 01m

$447

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/1

Showing 1-10 of 21 results

Compare providers for flights from St. Louis to Pearson Intl

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pearson Intl in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Toronto Pearson Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Toronto Pearson Intl Airport flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Toronto Pearson Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Toronto Pearson Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Pearson Intl

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

How far ahead should I book a flight from St. Louis to Toronto Pearson Intl Airport?

Booking 12 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Toronto Pearson Intl Airport. 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 St. Louis to Toronto Pearson Intl Airport?

Currently, June is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of $179). Flying from St. Louis to Toronto Pearson Intl Airport in October is currently the most expensive (average of $516). 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 STL to YYZ?

When flying from St. Louis to Toronto Pearson Intl Airport, 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 to fly round-trip from St. Louis to Toronto Pearson Intl Airport?

The best insider tips for St. Louis to Toronto Pearson Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your St. Louis to Toronto Pearson Intl Airport trip

Airports

STL

Expect security screening at STL to take 5-10 minutes off-peak, but up to 15 minutes during peak times. Check wait times online before heading to the airport.

YYZ

For a quick customs experience at YYZ, expect some walking from your gate to customs. Assistance is available for those with mobility concerns.

Our travel experts

Taryn White

Expert on STL

Kaitlyn McInnis

Expert on YYZ

Reviews of airlines servicing Pearson Intl

Read reviews from past customers who have flown United Airlines, American Airlines, and Air Canada from St. Louis to Toronto Pearson Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,064 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

United Airlines

7.4

Good

9,064 reviews

United Airlines

7.4

Good

9,064 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

American Airlines

7.2

Good

11,045 reviews

United Airlines

7.4

Good

9,064 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Air Canada

7.1

Good

10,497 reviews

United Airlines

7.4

Good

9,064 reviews

Reviews

1 / 20

2.0

Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

Related info for your journey

What airport do you fly from for flights from St. Louis to Toronto Pearson Intl?
If you book a flight to Toronto Pearson Intl from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis. There is 1 flight from Lambert-St Louis to Toronto Pearson Intl per day from 3 different airlines.
How long is the flight from St. Louis to Toronto Pearson Intl Airport?
Airlines like American Airlines fly from St. Louis to Toronto Pearson Intl Airport in about 9h 35m. The time it takes to get you to your destination can typically vary by up to . The distance from St. Louis to Toronto Pearson Intl Airport is about 653 mi.
What are the cheapest airlines flying from St. Louis to Toronto Pearson Intl Airport round-trip?
Flying on United Airlines is currently your cheapest option to Toronto Pearson Intl Airport, with prices starting at $199. Additional round-trip tickets that might be worth considering are offered by Air Canada and American Airlines, with the lowest prices starting at $214 and $270, respectively. United Airlines is priced at 59% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from St. Louis to Toronto Pearson Intl Airport one-way?
The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $177. However, be on the lookout for offers from United Airlines and American Airlines, as they are both options that can get you from St. Louis to Toronto Pearson Intl Airport for a low price.
What are the most reliable airlines from St. Louis to Toronto Pearson Intl Airport?
Before booking your flight to Toronto Pearson Intl Airport from St. Louis, check out the most reliable airlines to get you to your destination on time: Air Canada (94%), Jazz (94%), United Airlines( 94%).
What are the cheapest flights from St. Louis to Toronto Pearson Intl Airport?
The cheapest flight price from St. Louis to Toronto Pearson Intl Airport is $255. On average you can expect to pay $1,274. The most popular route, (Lambert-St Louis - Toronto Pearson Intl), can usually be booked for $254.
Can I find deals for flights from St. Louis to Pearson Intl that include hotel bookings?
Yes. In addition to deals on St. Louis to Pearson Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Pearson Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pearson Intl.
Can I find deals for business class flights from St. Louis to Pearson Intl?
Yes. Cheapflights offers flight deals from St. Louis 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 St. Louis to Toronto Pearson Intl Airport?
Currently, June is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of $179). Flying from St. Louis to Toronto Pearson Intl Airport in October is currently the most expensive (average of $516). 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.

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Top 3 airlines flying from St. Louis to Pearson Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$199	Average$522	FlexibilityNo cancel fee	On-time69%
Air Canada	Cheapest$220	Average$533	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$270	Average$579	FlexibilityNo cancel fee	On-time71%

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$73+ Cheap flights from St. Louis (STL) to Pearson Intl (YYZ)

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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Pearson Intl with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Lambert-St Louis to Toronto Pearson Intl are usually found in January or May, booked 12 days in advance, depart on a Tuesday or Sunday and return on a Saturday

Cheap flight deals from St. Louis to Pearson Intl

Cheapest flights from St. Louis to Pearson IntlExplore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

Explore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.

Find flight deals from St. Louis to Pearson Intl

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to Toronto Pearson Intl Airport that are best for you.

Compare providers for flights from St. Louis to Pearson Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pearson Intl in December.

Best time to book a flight from St. Louis to Pearson Intl

Have a flexible travel schedule? Discover the best time to fly to Pearson Intl from St. Louis with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Toronto Pearson Intl Airport

How far ahead should I book a flight from St. Louis to Toronto Pearson Intl Airport?

What is the cheapest month to book a flight from St. Louis to Toronto Pearson Intl Airport?

What is the cheapest time of day to fly from STL to YYZ?

How much does it cost to fly round-trip from St. Louis to Toronto Pearson Intl Airport?

The best insider tips for St. Louis to Toronto Pearson Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.

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Find useful and relevant information for your journey from St. Louis 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 St. Louis to Toronto Pearson Intl?

How long is the flight from St. Louis to Toronto Pearson Intl Airport?

What are the cheapest airlines flying from St. Louis to Toronto Pearson Intl Airport round-trip?

What are the cheapest airlines to fly from St. Louis to Toronto Pearson Intl Airport one-way?

What are the most reliable airlines from St. Louis to Toronto Pearson Intl Airport?

What are the cheapest flights from St. Louis to Toronto Pearson Intl Airport?

Can I find deals for flights from St. Louis to Pearson Intl that include hotel bookings?

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Alternative routes for St. Louis to Pearson Intl

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Top 3 airlines flying from St. Louis to Pearson Intl

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Cheapest flights from St. Louis to Pearson Intl
Explore the most affordable flight options available from St. Louis to Pearson Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 3, 2025.