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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 259

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
17 Aug — 24 Aug1
1 adult
1 adult, Economy, 0 bags
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 Saturday or Wednesday and return on a Wednesday

Cheap flight deals from Pearson Intl to St. Louis

Enter your travel dates to find the best prices.

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 18 July 2026.

Thu 6/81:15 p.m.
YYZ
-
STL
1 stop11h 59m
American Airlines
Tue 11/89:32 a.m.
STL
-
YYZ
1 stop7h 58m
American Airlines
Deal found 13/7C$ 463
Thu 29/101:15 p.m.
YYZ
-
STL
1 stop8h 53m
American Airlines
Sat 31/105:00 a.m.
STL
-
YYZ
1 stop8h 33m
American Airlines
Deal found 13/7C$ 478
Tue 11/83:14 p.m.
YYZ
-
STL
1 stop10h 00m
American Airlines
Tue 18/86:00 a.m.
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 14/7C$ 533
Thu 6/83:14 p.m.
YYZ
-
STL
1 stop10h 00m
American Airlines
Thu 20/86:00 a.m.
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 15/7C$ 534
Wed 19/81:15 p.m.
YYZ
-
STL
1 stop11h 59m
American Airlines
Sat 22/81:25 p.m.
STL
-
YYZ
1 stop9h 04m
American Airlines
Deal found 15/7C$ 546
Tue 1/911:39 a.m.
YYZ
-
STL
1 stop13h 35m
American Airlines
Tue 8/96:00 a.m.
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 18/7C$ 569
Fri 28/86:08 p.m.
YYZ
-
STL
1 stop6h 26m
American Airlines
Tue 1/96:00 a.m.
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 13/7C$ 574
Sat 15/811:39 a.m.
YYZ
-
STL
1 stop13h 19m
American Airlines
Sat 22/85:00 a.m.
STL
-
YYZ
1 stop8h 33m
American Airlines
Deal found 17/7C$ 621
Thu 29/109:35 a.m.
YYZ
-
STL
1 stop11h 04m
Multiple Airlines
Sat 31/1010:35 a.m.
STL
-
YYZ
2 stops12h 35m
Multiple Airlines
Deal found 13/7C$ 623
Wed 19/812:55 p.m.
YYZ
-
STL
Nonstop2h 07m
Air Canada
Thu 20/82:40 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 17/7C$ 630
Wed 5/84:45 p.m.
YYZ
-
STL
2 stops21h 36m
Multiple Airlines
Wed 12/84:09 p.m.
STL
-
YYZ
1 stop21h 21m
Multiple Airlines
Deal found 16/7C$ 632

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 18 July 2026.

Round-trip from

C$ 463

One-way from

C$ 259

Popular in

April

Cheapest in

January

Average price

C$ 747

Good round-trip deal

C$ 591 or less
American Airlines
  • American Airlines
  • 6/8-11/8
  • 2 total stops
  • 19h 57m total
  • Toronto to St. Louis
Search Deals
26/8
  • 26/8
  • 2 total stops
  • 32h 52m total
  • Toronto to St. Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 138 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (C$ 55 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

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 629,999 searches. Data last updated 18 July 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
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 6/8

7:15 p.m.-8:24 p.m.

Nonstop2h 09m

Lambert-St Louis

Tue 11/8

2:40 p.m.-5:40 p.m.

Nonstop2h 00m

C$ 641

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 29/10

7:42 a.m.-12:40 p.m.

1 stop5h 58m

Lambert-St Louis

Sat 31/10

4:05 p.m.-7:05 p.m.

Nonstop2h 00m

C$ 665

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 6/8

7:00 a.m.-12:11 p.m.

1 stop6h 11m

Lambert-St Louis

Tue 11/8

8:50 a.m.-7:02 p.m.

2 stops9h 12m

C$ 665

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 15/9

6:00 a.m.-9:29 a.m.

1 stop4h 29m

Lambert-St Louis

Wed 16/9

1:55 p.m.-10:59 p.m.

1 stop8h 04m

C$ 722

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 13/8

6:10 a.m.-9:37 a.m.

1 stop4h 27m

Lambert-St Louis

Thu 20/8

6:30 a.m.-1:34 p.m.

1 stop6h 04m

C$ 738

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/10

7:00 a.m.-12:13 p.m.

1 stop6h 13m

Lambert-St Louis

Sat 17/10

8:00 a.m.-5:56 p.m.

1 stop8h 56m

C$ 747

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 15/9

11:00 a.m.-3:38 p.m.

1 stop5h 38m

Lambert-St Louis

Wed 16/9

8:50 a.m.-3:46 p.m.

1 stop5h 56m

C$ 750

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 10/8

7:00 p.m.-11:44 p.m.

1 stop5h 44m

Lambert-St Louis

Thu 13/8

2:40 p.m.-5:40 p.m.

Nonstop2h 00m

C$ 752

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 9/10

5:27 p.m.-9:21 p.m.

1 stop4h 54m

Lambert-St Louis

Sun 11/10

7:30 a.m.-1:47 p.m.

1 stop5h 17m

C$ 753

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 10/8

7:00 p.m.-11:44 p.m.

1 stop5h 44m

Lambert-St Louis

Tue 11/8

8:50 a.m.-7:02 p.m.

2 stops9h 12m

C$ 753

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

The price you pay for your flight from Toronto Pearson Intl Airport to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 C$ 592). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,123). 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 18 July 2026.

When flying from Toronto Pearson Intl Airport to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 24% versus a flight in the evening.

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 18 July 2026.
See what other customers who have flown with United Airlines,American Airlines, andAir Canada from Toronto Pearson Intl Airport to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,005 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
10,005 reviews
United Airlines
7.4
Good
10,005 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
American Airlines
7.1
Good
11,827 reviews
United Airlines
7.4
Good
10,005 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
Air Canada
7.1
Good
11,353 reviews
United Airlines
7.4
Good
10,005 reviews
Check prices

Crew

8.1

Boarding

7.7

Entertainment

7.1

Food

6.6

Comfort

7.3

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

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?

    Lambert-St Louis (STL), located 20.4 km from the city centre, is the airport you fly into when you book flights from Toronto Pearson Intl to St. Louis. 3 airlines have flights to Lambert-St Louis from Toronto Pearson Intl on a regular basis. Booking flights from Toronto Pearson Intl to Lambert-St Louis should not be difficult; the airport handles an average of 4 inbound flights from Toronto Pearson Intl per day.

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

    There are many flights that can get you from Toronto Pearson Intl Airport to St. Louis in 2h 09m. Fly via Air Canada, United Airlines, or Delta to get the fastest option. The distance from Toronto Pearson Intl Airport to St. Louis is about 1051 km. Both multi-stop and direct flights can be found to your destination and back.

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

    Air Canada, at C$ 337, was found to be the cheapest airline from Toronto Pearson Intl Airport to St. Louis.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Air Canada is 52% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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?

    While on average a flight from Toronto Pearson Intl Airport to St. Louis is generally C$ 659, our data shows the cheapest flight currently is C$ 418. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 649 for that flight.

  • 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 C$ 592). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,123). 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?

Book flights to St. Louis if you plan to visit one of these locations
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Alternative routes for Pearson Intl to St. Louis

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

Top 3 airlines flying from Pearson Intl to St. Louis

Discover the top 3 airlines 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 629,999 searches. Data last updated 18 July 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 337AverageC$ 644FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 343AverageC$ 586FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 371AverageC$ 696FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

Fly with Cheapflights

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

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

Millions of users choose and trust Cheapflights to book the best flight deals from Pearson Intl to St. Louis for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Pearson Intl to St. Louis, users can toggle the no change fees filter when performing a flight search.

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

Not ready to book yet? You can track prices for flights from Pearson Intl to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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