Question 1

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

Accepted Answer

Our cheapest airline available from St. Louis to Toronto Pearson Intl Airport is American Airlines. Our recent data shows that you can find tickets from as low as C$ 461 on this airline. Additional options worth looking into are Sun Country Air and Air Canada, starting at C$ 495 and C$ 509 round-trip. American Airlines is currently priced 26% below the average price you’ll pay for this route.

Question 2

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

Accepted Answer

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as C$ 193. Users have also found prices from C$ 209 and C$ 280 on Sun Country Air and Air Canada, respectively.

Question 3

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

Accepted Answer

The best time to book flights from St. Louis to Toronto Pearson Intl Airport is 50 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.

Question 4

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of C$ 167). Flying from St. Louis 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.

Question 5

What is the cheapest day to fly from St. Louis to Toronto Pearson Intl Airport?

Accepted Answer

Travelers seeking maximum savings on their St. Louis to Toronto Pearson Intl Airport flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 6

Weekly flight availability from St. Louis to Toronto Pearson Intl Airport

Accepted Answer

The most flights from STL to YYZ are scheduled on a Wednesday (4 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Question 7

E

Accepted Answer

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.

Question 8

E

Accepted Answer

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).

Question 9

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

Accepted Answer

While on average a flight from St. Louis to Toronto Pearson Intl Airport is generally C$ 586, our data shows the cheapest flight currently is C$ 507. When looking at the most popular route, (Lambert-St Louis - Toronto Pearson Intl), you can expect to pay C$ 427 for that flight.

Question 10

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

Accepted Answer

Consider United Airlines (73%), Air Canada (50%) or Jazz (37%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Toronto Pearson Intl Airport.

Question 11

What is the cheapest day to fly round-trip from St. Louis to Toronto Pearson Intl Airport?

Accepted Answer

Wednesday is generally a great day to depart. Flying on this day could help you save up to 160%.

Question 12

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

Accepted Answer

To save on the cost of your flight from St. Louis to Toronto Pearson Intl Airport, book at least 53 days before your planned departure. Booking around this time can save you about 399% on the cost of this flight compared to booking a flight leaving this week. We have found prices from C$ 429 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as C$ 1,243.

Question 13

What is the cheapest month to fly from St. Louis to Toronto Pearson Intl Airport?

Accepted Answer

The best pricing can be found in the month of January. Prices to Toronto Pearson Intl Airport from St. Louis average C$ 580. You can even find prices in January for less than C$ 580, as users have found deals to Toronto Pearson Intl Airport from as low as C$ 339. The month of March appears to be one of the more expensive times to travel to Toronto Pearson Intl Airport from St. Louis. Flying in the targeted month can save you up to 37%.

Question 14

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

Accepted Answer

One of the essential ways to save on airfare from St. Louis to Toronto Pearson Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 25% on airfare.

Question 15

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

Accepted Answer

Lambert-St Louis (STL) is the airport you will fly out of if you book a flight from St. Louis to Toronto Pearson Intl. You should not have trouble finding flights to Toronto Pearson Intl from Lambert-St Louis; the airport handles an average of 3 outbound flights to Toronto Pearson Intl per day. You should also have plenty of airline options to choose from since 1 airline has flights from the St. Louis airport to Toronto Pearson Intl. It is only a 20.4 km journey to Lambert-St Louis (STL) from St. Louis’s city centre.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

How does Cheapflights help users find flights from St. Louis to Pearson Intl?

Accepted Answer

Deals for St. Louis 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.

Question 20

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Pearson Intl?

Accepted Answer

Cheapflights helps you find that perfect flight to Pearson Intl from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 21

Can Cheapflights find flights from St. Louis to Pearson Intl with no change fees?

Accepted Answer

Yes, we can. To see specific flights from St. Louis to Pearson Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Question 22

Can Cheapflights notify me if prices for flights from St. Louis to Pearson Intl become cheaper?

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	C$ 413
One-way from	C$ 193
Popular in	November
Cheapest in	January
Average price	C$ 667
Good round-trip deal	C$ 574 or less

Cheap flights from St. Louis to Toronto Pearson Intl Airport from C$ 193

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 25/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Lambert-St Louis to Toronto Pearson Intl are usually found in January or October, booked 50 days in advance, depart on a Monday or Tuesday and return on a Thursday

Cheap flight deals from St. Louis to Pearson Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find 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 12 June 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 12 June 2025.

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.

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?

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

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?

Find hourly flight availability from St. Louis 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.

Weekly flight availability from St. Louis to Toronto Pearson Intl Airport

Explore weekly flight availability from St. Louis 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.

Rainfall in Pearson Intl by month

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

Temperature in Pearson Intl by month

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

Reviews of airlines servicing Pearson Intl

Peruse reviews from past customers who have flown with Delta, United Airlines and American Airlines from St. Louis to Toronto to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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?

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?

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

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

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

Travelling to a place near St. Louis?

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.

Alternative routes for St. Louis to Pearson Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from St. Louis to Pearson Intl

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 St. Louis to Pearson Intl?

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Pearson Intl?

Can Cheapflights find flights from St. Louis to Pearson Intl with no change fees?

Can Cheapflights notify me if prices for flights from St. Louis to Pearson Intl become cheaper?

100% Free

Book with Flexibility

Travel Smart

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 12 June 2025.