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St. Louis

$188+ Cheap flights from Pearson Intl (YYZ) to St. Louis (STL)

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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
May 24 — May 311
Sun 5/24
Sun 5/31
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Toronto Pearson Intl to Lambert-St Louis are usually found in June or May, booked 80 days in advance, depart on a Sunday or Monday and return on a Friday

Cheap flight deals from Pearson Intl to St. Louis

Cheapest flights from Pearson Intl to St. Louis
Explore the most affordable flight options available from Pearson Intl to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/279:50 am
YYZ
-
STL
1 stop15h 07m
Multiple Airlines
Wed 6/105:13 pm
STL
-
YYZ
2 stops19h 52m
Multiple Airlines
Deal found 4/22$386
This Kiwi.com deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/194:50 pm
YYZ
-
STL
1 stop8h 19m
Multiple Airlines
Mon 6/224:17 pm
STL
-
YYZ
1 stop23h 28m
Multiple Airlines
Deal found 4/20$388
This Vliegwinkel deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:00 pm
YYZ
-
STL
Nonstop2h 09m
Air Canada
Sun 5/107:05 am
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 4/20$389
This Air Canada deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:00 pm
YYZ
-
STL
Nonstop2h 09m
Air Canada
Mon 5/117:05 am
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 4/20$404
This Air Canada deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:00 pm
YYZ
-
STL
Nonstop2h 09m
Air Canada
Wed 6/102:15 pm
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 4/22$406
This Air Canada deal was found by Cheapflights users on 4/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/147:10 pm
YYZ
-
STL
Nonstop2h 09m
Air Canada
Sat 5/167:05 am
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 4/22$407
This American Airlines deal was found by Cheapflights users on 4/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2711:39 am
YYZ
-
STL
1 stop9h 51m
American Airlines
Wed 6/102:33 pm
STL
-
YYZ
1 stop7h 56m
American Airlines
Deal found 4/21$415

Find flight deals from Pearson Intl to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Pearson Intl (YYZ) to St. Louis (STL). 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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$386
(Kiwi.com)

One-way from

$188
(Kiwi.com)

Popular in

April

Cheapest in

June

Average price

$801

Good round-trip deal

$485 or less
Provider with most accurate pricing for Toronto Pearson Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Toronto Pearson Intl-Lambert-St Louis flights.
Search Deals
From Toronto Pearson Intl to Lambert-St Louis
Search Deals
One-way flight from Toronto Pearson Intl to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($61 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from Toronto Pearson Intl to Lambert-St Louis.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pearson Intl to St. Louis 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 2,558,603 searches. Data last updated April 24, 2026.
Use the filters below to find and compare flights from Toronto Pearson Intl Airport to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 6/5

8:50 am-10:44 pm

1 stop14h 54m

Lambert-St Louis

Fri 6/12

5:41 pm-11:59 pm

1 stop5h 18m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 6/4

6:12 pm-9:09 pm

1 stop3h 57m

Lambert-St Louis

Mon 6/8

5:24 pm-11:58 pm

1 stop5h 34m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 5/17

7:22 pm-11:21 pm

1 stop4h 59m

Lambert-St Louis

Sun 5/24

6:00 am-1:40 pm

1 stop6h 40m

$426
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 6/3

8:50 am-12:11 pm

1 stop4h 21m

Lambert-St Louis

Sat 6/6

6:55 pm-11:59 pm

1 stop4h 04m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 6/3

7:55 am-3:40 pm

1 stop8h 45m

Lambert-St Louis

Sat 6/6

6:45 am-1:30 pm

1 stop5h 45m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 6/15

7:00 pm-11:35 pm

1 stop5h 35m

Lambert-St Louis

Fri 6/19

8:15 pm-9:54 am

1 stop12h 39m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 5/27

11:29 am-5:46 pm

1 stop7h 17m

Lambert-St Louis

Wed 6/10

5:24 pm-11:58 pm

1 stop5h 34m

$426

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 5/20

5:20 pm-9:18 pm

1 stop4h 58m

Lambert-St Louis

Wed 5/27

11:25 am-7:37 pm

1 stop7h 12m

$426
Cheapest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 7/15

4:45 pm-6:36 pm

2 stops26h 51m

$213
Quickest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 5/16

11:00 am-12:06 pm

Nonstop2h 06m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/21

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Pearson Intl to St. Louis

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 Pearson Intl to St. Louis in April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust 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 Toronto Pearson Intl Airport-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Toronto Pearson Intl Airport-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Toronto Pearson Intl Airport-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Toronto Pearson Intl Airport-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Toronto Pearson Intl Airport-St. Louis 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 Pearson Intl to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis 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 St. Louis

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

To ensure you get the cheapest price possible for a flight from Toronto Pearson Intl Airport to St. Louis, you should look to book at least 79 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, June is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of $393). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of $801). 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 STL?

Find hourly flight availability from Pearson Intl to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2026.

It’s typically best to fly out from Toronto Pearson Intl Airport to St. Louis in the morning. Doing so could potentially save you 30% on the flight price compared to flying in the evening, which is usually more expensive.

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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated April 24, 2026.
Get a feel of what it's like to fly with Air Canada from Toronto Pearson Intl Airport to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,961 reviews

Overall

7.1

Food

6.3

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Crew

7.8

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good
Air Canada
7.1
Good
10,961 reviews
Air Canada
7.1
Good
10,961 reviews

Overall

7.1

Food

6.3

Entertainment

6.8

Boarding

7.3

Comfort

7.1

Crew

7.8

Reviews

1 / 20
6.0
Good

Thomas,Apr 2026

YYZ - LHR

Food is sub par. I travel a lot and AC food is not good

Related info for your journey

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

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to St. Louis from Toronto Pearson Intl. Booking flights from Toronto Pearson Intl to Lambert-St Louis (STL) should be relatively easy as there are 2 daily inbound flights from Toronto Pearson Intl from 1 airline.

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

    Airlines like United Airlines and Delta fly from Toronto Pearson Intl Airport to St. Louis in about 3h 57m. The time it takes to get you to your destination can typically vary by up to 10h 57m. There are 653 mi between Toronto Pearson Intl Airport and St. Louis. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Flying on Air Canada is currently your cheapest option to St. Louis, with prices starting at $323. You may be able to fly from Toronto Pearson Intl Airport to St. Louis for 33% less than the average price by searching for this airline.

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

    The cheapest airlines for a one-way flight from Toronto Pearson Intl Airport to St. Louis are Air Canada ($187), American Airlines ($219), and United Airlines ($343).

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

    No one likes to see their flight delayed. When booking a flight from Toronto Pearson Intl Airport to St. Louis consider choosing United Airlines (84%), Air Canada (83%) or Jazz (83%) as they are the most reliable in getting you off to your destination on time.

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

    Looking at all options, your cheapest flight can be booked for $295. While the most popular route (Toronto Pearson Intl - Lambert-St Louis) can be booked for $391 on average, our data indicates $731 when flying from Toronto Pearson Intl Airport to St. Louis.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Pearson Intl to St. Louis 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 St. Louis?

    Currently, June is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of $393). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of $801). 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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Pearson Intl to St. Louis

Discover the top airline that operate flights from Pearson Intl to St. Louis. 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 2,558,603 searches. Data last updated April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$323Average$478FlexibilityNo cancel feeOn-time67%

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