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St. Louis

$181+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
Aug 27 — Sep 31
Thu 8/27
Thu 9/3
1 adult, Economy
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Cheapflights Tip: The best prices from Toronto Pearson Intl to Lambert-St Louis are usually found in January or February, booked 53 days in advance, depart on a Sunday or Saturday 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 July 28, 2026.

This American Airlines deal was found by Cheapflights users on 7/26. 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.
Mon 9/143:13 pm
YYZ
-
STL
1 stop10h 14m
American Airlines
Mon 9/217:21 am
STL
-
YYZ
1 stop10h 14m
American Airlines
Deal found 7/26$324
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Tue 9/81:15 pm
YYZ
-
STL
1 stop11h 59m
American Airlines
Fri 9/115:00 am
STL
-
YYZ
1 stop8h 32m
American Airlines
Deal found 7/26$329
This American Airlines deal was found by Cheapflights users on 7/26. 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.
Thu 9/106:30 am
YYZ
-
STL
1 stop7h 46m
American Airlines
Thu 9/175:00 am
STL
-
YYZ
1 stop8h 32m
American Airlines
Deal found 7/26$334
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Thu 9/176:30 am
YYZ
-
STL
1 stop7h 46m
American Airlines
Mon 9/217:21 am
STL
-
YYZ
1 stop10h 14m
American Airlines
Deal found 7/27$335
This American Airlines deal was found by Cheapflights users on 7/23. 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.
Sat 8/223:13 pm
YYZ
-
STL
1 stop9h 45m
American Airlines
Sat 8/295:00 am
STL
-
YYZ
1 stop8h 33m
American Airlines
Deal found 7/23$354
This American Airlines deal was found by Cheapflights users on 7/25. 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.
Thu 8/201:15 pm
YYZ
-
STL
1 stop11h 59m
American Airlines
Sat 8/295:00 am
STL
-
YYZ
1 stop12h 30m
American Airlines
Deal found 7/25$365
This American Airlines deal was found by Cheapflights users on 7/27. 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.
Mon 8/171:15 pm
YYZ
-
STL
1 stop11h 59m
American Airlines
Wed 8/196:00 am
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 7/27$373
This Kiwi.com deal was found by Cheapflights users on 7/23. 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.
Thu 10/295:15 pm
YYZ
-
STL
1 stop27h 24m
Multiple Airlines
Tue 11/310:35 am
STL
-
YYZ
2 stops12h 35m
Multiple Airlines
Deal found 7/23$399
This American Airlines deal was found by Cheapflights users on 7/23. 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.
Thu 8/207:20 am
YYZ
-
STL
1 stop10h 03m
American Airlines
Thu 8/276:00 am
STL
-
YYZ
1 stop9h 45m
American Airlines
Deal found 7/23$414
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Mon 9/144:45 pm
YYZ
-
STL
2 stops21h 36m
Multiple Airlines
Mon 9/215:19 pm
STL
-
YYZ
1 stop22h 26m
Multiple Airlines
Deal found 7/27$437
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Tue 8/256:00 am
YYZ
-
STL
1 stop4h 54m
Multiple Airlines
Sun 8/306:17 pm
STL
-
YYZ
2 stops19h 38m
Multiple Airlines
Deal found 7/27$439

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 July 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$324
(American Airlines)

One-way from

$181
(American Airlines)

Popular in

April

Cheapest in

January

Average price

$549

Good round-trip deal

$470 or less

Good one-way deal

$298 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 ($67 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals
Price to beat on a round-trip flight from Toronto Pearson Intl to Lambert-St Louis.
Search Deals
Price to beat on a one-way 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 July 28, 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

Tue 9/15

11:00 am-10:00 pm

1 stop12h 00m

Lambert-St Louis

Wed 9/16

8:30 am-5:01 pm

1 stop7h 31m

$457

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 8/21

10:15 am-3:38 pm

1 stop6h 23m

Lambert-St Louis

Fri 8/28

10:53 am-5:01 pm

1 stop5h 08m

$531

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 9/14

7:15 pm-8:20 pm

Nonstop2h 05m

Lambert-St Louis

Mon 9/21

8:30 am-5:01 pm

1 stop7h 31m

$533
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 9/15

12:55 pm-2:00 pm

Nonstop2h 05m

Lambert-St Louis

Wed 9/16

8:55 am-11:49 am

Nonstop1h 54m

$536

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/20

2:00 pm-6:42 pm

1 stop5h 42m

Lambert-St Louis

Thu 8/27

8:55 am-11:56 am

Nonstop2h 01m

$540

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 8/23

2:00 pm-6:42 pm

1 stop5h 42m

Lambert-St Louis

Sun 8/30

2:40 pm-5:37 pm

Nonstop1h 57m

$540

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 8/23

8:50 am-12:02 pm

1 stop4h 12m

Lambert-St Louis

Sun 8/30

8:00 am-3:46 pm

1 stop6h 46m

$543
Cheapest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 9/16

6:30 am-1:16 pm

1 stop7h 46m

$181

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 8/31

3:14 pm-12:14 am

1 stop10h 00m

$202

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 9/7

4:45 pm-1:31 pm

2 stops21h 46m

$208

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/23

Showing 1-10 of 17 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 July.
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 52 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, January is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of $422). 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 July 28, 2026.

It’s typically best to fly out from Toronto Pearson Intl Airport to St. Louis in the afternoon. 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?

Airfare is below average for this route at the moment.

Toronto Pearson Intl Airport to St. Louis flights typically cost between $421 and $634 in September.
The cheapest round-trip price found within the last 5 days was $324 on American Airlines (Sep 14-Sep 21).

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 July 28, 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
11,398 reviews

Crew

7.8

Food

6.3

Comfort

7.1

Overall

7.1

Entertainment

6.8

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍
Air Canada
7.1
Good
11,398 reviews
Air Canada
7.1
Good
11,398 reviews

Crew

7.8

Food

6.3

Comfort

7.1

Overall

7.1

Entertainment

6.8

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2025

YYZ - LAS

It's was great and the crew are very nice, captain has a smooth land on the runway 👍

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 4 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 American Airlines fly from Toronto Pearson Intl Airport to St. Louis in about 10h 14m. The time it takes to get you to your destination can typically vary by up to . There are 653 mi between Toronto Pearson Intl Airport and St. Louis.

  • 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 $256. You may be able to fly from Toronto Pearson Intl Airport to St. Louis for 49% 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 American Airlines ($221), Air Canada ($246), and United Airlines ($311).

  • 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 Jazz (84%), Air Canada (83%) or United Airlines (68%) 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 $286. While the most popular route (Toronto Pearson Intl - Lambert-St Louis) can be booked for $437 on average, our data indicates $401 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, January is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of $422). 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
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington

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 July 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$256Average$512FlexibilityNo cancel feeOn-time67%

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