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Cheap flights from St. Louis to Toronto Pearson Intl Airport from C$ 235

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 28/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYZ
26 Jan — 2 Feb1
1 adult

The best prices from Lambert-St Louis to Toronto Pearson Intl are usually found in May or February, booked 82 days in advance, depart on a Wednesday or Monday and return on a Wednesday

Cheap flight deals from St. Louis to Pearson Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) 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 21 January 2025.

Round-trip from

C$ 432

One-way from

C$ 235

Popular in

November

Cheapest in

May

Average price

C$ 417

Good one-way deal

C$ 408 or less
18/2-25/2
  • 18/2-25/2
  • 3 total stops
  • 29h 32m total
  • St. Louis to Toronto
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28/1
  • 28/1
  • 2 total stops
  • 28h 53m total
  • St. Louis to Toronto
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Highest demand for flights based on searches. 8% potential increase in price (C$ 81 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 37 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Price to beat on a one-way flight from Lambert-St Louis to Toronto Pearson Intl.
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Find 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 21 January 2025.

Tue 18/24:00 p.m.STL - YYZ
2 stops20h 55mMultiple Airlines
Tue 25/27:05 a.m.YYZ - STL
1 stop8h 37mMultiple Airlines
Deal found 21/1C$ 432
Thu 27/21:35 p.m.STL - YYZ
1 stop9h 04mDelta
Wed 5/37:55 a.m.YYZ - STL
1 stop9h 54mDelta
Deal found 21/1C$ 625
Tue 11/25:40 a.m.STL - YYZ
1 stop10h 55mAmerican Airlines
Thu 13/211:31 a.m.YYZ - STL
1 stop11h 32mAmerican Airlines
Deal found 21/1C$ 651
Tue 11/26:00 a.m.STL - YYZ
2 stops29h 37mWestJet
Thu 13/27:55 a.m.YYZ - STL
1 stop14h 07mWestJet
Deal found 21/1C$ 714
Tue 4/37:00 a.m.STL - YYZ
1 stop30h 55mAlaska Airlines
Tue 11/34:20 p.m.YYZ - STL
1 stop32h 39mAlaska Airlines
Deal found 21/1C$ 728
Fri 7/31:05 p.m.STL - YYZ
1 stop5h 40mAir Canada
Fri 14/31:50 p.m.YYZ - STL
Nonstop2h 16mAir Canada
Deal found 20/1C$ 802
Mon 31/35:35 p.m.STL - YYZ
1 stop15h 23mUnited Airlines
Thu 10/41:25 p.m.YYZ - STL
2 stops27h 22mUnited Airlines
Deal found 21/1C$ 842

Find flights from St. Louis to Pearson Intl within your budget

Customize your flight search to find flights from St. Louis 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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 18/2

4:00 p.m.-1:55 p.m.

2 stops20h 55m

Toronto Pearson Intl

Tue 25/2

7:05 a.m.-2:42 p.m.

1 stop8h 37m

C$ 432

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 27/2

1:35 p.m.-11:39 p.m.

1 stop9h 04m

Toronto Pearson Intl

Wed 5/3

7:55 a.m.-4:49 p.m.

1 stop9h 54m

C$ 625

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 11/2

5:40 a.m.-5:35 p.m.

1 stop10h 55m

Toronto Pearson Intl

Thu 13/2

11:31 a.m.-10:03 p.m.

1 stop11h 32m

C$ 651

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 11/2

6:00 a.m.-12:37 p.m.

2 stops29h 37m

Toronto Pearson Intl

Thu 13/2

7:55 a.m.-9:02 p.m.

1 stop14h 07m

C$ 714

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 4/3

7:00 a.m.-2:55 p.m.

1 stop30h 55m

Toronto Pearson Intl

Tue 11/3

4:20 p.m.-11:59 p.m.

1 stop32h 39m

C$ 728

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 7/3

1:05 p.m.-7:45 p.m.

1 stop5h 40m

Toronto Pearson Intl

Fri 14/3

1:50 p.m.-3:06 p.m.

Nonstop2h 16m

C$ 802

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 31/3

5:35 p.m.-9:58 a.m.

1 stop15h 23m

Toronto Pearson Intl

Thu 10/4

1:25 p.m.-3:47 p.m.

2 stops27h 22m

C$ 842

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 28/1

3:48 p.m.-9:41 p.m.

2 stops28h 53m

C$ 235

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 12/2

1:35 p.m.-11:39 p.m.

1 stop9h 04m

C$ 273

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 12/2

5:40 a.m.-5:24 p.m.

2 stops10h 44m

C$ 314

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/1

Showing 1-10 of 15 results
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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.

Travel insights for flights from St. Louis to Pearson Intl

Get recent, data-driven insights about flights from St. Louis to Pearson Intl including ideal travel times, pricing trends, and more.

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 17 January 2025.

The best time to book flights from St. Louis to Toronto Pearson Intl Airport is 81 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 St. Louis to Toronto Pearson Intl Airport?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of C$ 168). Flying from St. Louis to Toronto Pearson Intl Airport in July is currently the most expensive (average of C$ 258). 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?

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 21 January 2025.

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 52% on airfare.

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 21 January 2025.

The most flights from STL to YYZ are scheduled on a Monday (2 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 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 21 January 2025.
Peruse reviews from past customers who have flown with American Airlines, United Airlines and Delta 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.
Alaska Airlines
8.0
Very good
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
9,706 reviews
Alaska Airlines
8.0
Very good
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
8,521 reviews
Alaska Airlines
8.0
Very good
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
8,984 reviews
Alaska Airlines
8.0
Very good
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
2,829 reviews
Alaska Airlines
8.0
Very good
9,706 reviews
Check prices

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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 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?

    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 1 outbound flight 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.

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

    Our cheapest airline available from St. Louis to Toronto Pearson Intl Airport is Delta. Our recent data shows that you can find tickets from as low as C$ 625 on this airline. Additional options worth looking into are American Airlines and WestJet, starting at C$ 651 and C$ 714 round-trip.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as C$ 273. Users have also found prices from C$ 314 and C$ 384 on American Airlines and Alaska Airlines, respectively.

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

    Consider Air Canada (74%), Jazz (74%) or United Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Toronto Pearson Intl Airport.

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

    While on average a flight from St. Louis to Toronto Pearson Intl Airport is generally C$ 535, our data shows the cheapest flight currently is C$ 392. When looking at the most popular route, (Lambert-St Louis - Toronto Pearson Intl), you can expect to pay C$ 514 for that flight.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Toronto Pearson Intl Airport (average of C$ 168). Flying from St. Louis to Toronto Pearson Intl Airport in July is currently the most expensive (average of C$ 258). 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 St. Louis?

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Brampton
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Vaughan
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Milton
Oakville
Kitchener
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Cobourg
Pickering
Whitby

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Alternative routes for St. Louis to Pearson Intl

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Pearson Intl flights
Springfield to Pearson Intl flights

Top airline flying from St. Louis to Pearson Intl

Discover the top airline that operate flights from St. Louis 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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 371AverageC$ 803FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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.

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

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!

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

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.

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

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!

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