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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 258

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 14/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
5 Apr — 12 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Toronto Pearson Intl to Lambert-St Louis are usually found in June or May, booked 72 days in advance, depart on a Thursday or Saturday and return on a Friday

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 6 March 2026.

Wed 1/41:10 p.m.
YYZ
-
STL
1 stop9h 01m
American Airlines
Wed 8/45:51 a.m.
STL
-
YYZ
1 stop7h 42m
American Airlines
Deal found 4/3C$ 455
Tue 24/37:15 a.m.
YYZ
-
STL
1 stop17h 04m
Multiple Airlines
Tue 31/311:27 a.m.
STL
-
YYZ
2 stops23h 08m
Multiple Airlines
Deal found 5/3C$ 477
Tue 21/43:13 p.m.
YYZ
-
STL
1 stop8h 06m
American Airlines
Sat 25/48:57 a.m.
STL
-
YYZ
1 stop7h 46m
American Airlines
Deal found 5/3C$ 478
Mon 20/41:15 p.m.
YYZ
-
STL
1 stop10h 02m
American Airlines
Wed 22/45:51 a.m.
STL
-
YYZ
1 stop10h 52m
American Airlines
Deal found 3/3C$ 493
Mon 23/38:20 p.m.
YYZ
-
STL
2 stops15h 12m
Multiple Airlines
Wed 25/34:51 p.m.
STL
-
YYZ
1 stop17h 35m
Multiple Airlines
Deal found 2/3C$ 503
Wed 25/38:20 p.m.
YYZ
-
STL
1 stop11h 57m
Multiple Airlines
Tue 31/311:27 a.m.
STL
-
YYZ
2 stops23h 08m
Multiple Airlines
Deal found 5/3C$ 504
Tue 24/37:15 a.m.
YYZ
-
STL
1 stop17h 04m
Multiple Airlines
Fri 3/49:50 a.m.
STL
-
YYZ
2 stops10h 19m
Multiple Airlines
Deal found 5/3C$ 505
Tue 24/35:15 p.m.
YYZ
-
STL
2 stops42h 16m
Multiple Airlines
Mon 30/37:47 a.m.
STL
-
YYZ
1 stop15h 27m
Multiple Airlines
Deal found 5/3C$ 512
Fri 17/48:00 p.m.
YYZ
-
STL
1 stop20h 21m
Multiple Airlines
Mon 20/48:23 p.m.
STL
-
YYZ
2 stops16h 42m
Multiple Airlines
Deal found 1/3C$ 518
Tue 21/46:15 a.m.
YYZ
-
STL
1 stop10h 45m
American Airlines
Thu 30/46:00 a.m.
STL
-
YYZ
1 stop9h 45m
American Airlines
Deal found 5/3C$ 519
Tue 17/31:55 p.m.
YYZ
-
STL
1 stop7h 21m
American Airlines
Tue 24/38:00 a.m.
STL
-
YYZ
1 stop8h 36m
American Airlines
Deal found 4/3C$ 520
Wed 25/33:40 p.m.
YYZ
-
STL
2 stops19h 51m
Multiple Airlines
Mon 30/37:47 a.m.
STL
-
YYZ
1 stop15h 27m
Multiple Airlines
Deal found 5/3C$ 523

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 6 March 2026.

Round-trip from

C$ 455

One-way from

C$ 258

Popular in

July

Cheapest in

June

Average price

C$ 682

Good round-trip deal

C$ 582 or less
American Airlines
  • American Airlines
  • 1/4-8/4
  • 2 total stops
  • 16h 43m total
  • Toronto to St. Louis
Search Deals
14/4
  • 14/4
  • 2 total stops
  • 14h 00m total
  • Toronto to St. Louis
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (C$ 18 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 6 March 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

Thu 2/4

8:50 a.m.-12:22 p.m.

1 stop4h 32m

Lambert-St Louis

Tue 7/4

11:15 a.m.-10:23 p.m.

2 stops10h 08m

C$ 571
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 8/4

6:30 a.m.-11:48 a.m.

1 stop6h 18m

Lambert-St Louis

Fri 10/4

5:59 p.m.-10:39 p.m.

1 stop3h 40m

C$ 571

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 25/3

7:30 a.m.-2:42 p.m.

2 stops8h 12m

Lambert-St Louis

Sat 28/3

7:00 p.m.-9:54 a.m.

1 stop13h 54m

C$ 571

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 11/4

12:15 p.m.-4:40 p.m.

1 stop5h 25m

Lambert-St Louis

Mon 13/4

1:46 p.m.-10:56 p.m.

1 stop8h 10m

C$ 571

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 4/6

7:30 a.m.-3:46 p.m.

2 stops9h 16m

Lambert-St Louis

Mon 8/6

6:55 p.m.-11:59 p.m.

1 stop4h 04m

C$ 590

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 9/4

6:20 a.m.-9:46 a.m.

1 stop4h 26m

Lambert-St Louis

Mon 13/4

6:48 a.m.-1:24 p.m.

1 stop5h 36m

C$ 590

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 17/5

7:00 p.m.-11:57 p.m.

1 stop5h 57m

Lambert-St Louis

Sun 24/5

1:13 p.m.-8:44 p.m.

1 stop6h 31m

C$ 590

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 18/4

2:35 p.m.-9:13 p.m.

2 stops7h 38m

Lambert-St Louis

Sat 25/4

7:45 a.m.-8:44 p.m.

1 stop11h 59m

C$ 590

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 26/3

8:45 a.m.-2:42 p.m.

1 stop6h 57m

Lambert-St Louis

Thu 2/4

7:45 a.m.-1:42 p.m.

1 stop4h 57m

C$ 591
Cheapest one-way

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 14/4

11:33 a.m.-11:46 p.m.

1 stop13h 13m

C$ 262

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 18 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?

Use this chart to determine the optimal time to book a round-trip flight from Pearson Intl to St. Louis. Price data was last updated on 27 February 2026.

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 72 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, December is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of C$ 337). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 508). 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 6 March 2026.

When flying from Toronto Pearson Intl Airport to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 6 March 2026.
See what other customers who have flown with Delta,United Airlines, andWestJet 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.
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,258 reviews
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,403 reviews
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,281 reviews
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.1
Good
11,393 reviews
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,780 reviews
Delta
7.9
Good
8,258 reviews
Check prices

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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. 5 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 1 inbound flight 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 4h 32m. Fly via 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?

    United Airlines, at C$ 329, was found to be the cheapest airline from Toronto Pearson Intl Airport to St. Louis.Alternate airlines to your destination round-trip include American Airlines and Air Canada. United Airlines is 47% 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 United Airlines (75%), Air Canada (38%) or Jazz (38%) 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$ 682, our data shows the cheapest flight currently is C$ 372. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 535 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, December is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of C$ 337). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 508). 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 5 airlines flying from Pearson Intl to St. Louis

Discover the top 5 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 6 March 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 329AverageC$ 570FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 361AverageC$ 678FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 454AverageC$ 585FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 469AverageC$ 639FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 551AverageC$ 975FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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 Pearson Intl to St. Louis?

Cheapflights helps you search for flights from Pearson Intl to St. Louis via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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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