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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 257

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 21/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
24 May — 31 May1
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 80 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 24 April 2026.

Wed 27/59:50 a.m.
YYZ
-
STL
1 stop15h 07m
Multiple Airlines
Wed 10/65:13 p.m.
STL
-
YYZ
2 stops19h 52m
Multiple Airlines
Deal found 22/4C$ 528
Fri 19/64:50 p.m.
YYZ
-
STL
1 stop8h 19m
Multiple Airlines
Mon 22/64:17 p.m.
STL
-
YYZ
1 stop23h 28m
Multiple Airlines
Deal found 20/4C$ 531
Thu 7/57:00 p.m.
YYZ
-
STL
Nonstop2h 09m
Air Canada
Sun 10/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 20/4C$ 532
Thu 7/57:00 p.m.
YYZ
-
STL
Nonstop2h 09m
Air Canada
Mon 11/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 20/4C$ 553
Wed 27/57:00 p.m.
YYZ
-
STL
Nonstop2h 09m
Air Canada
Wed 10/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 22/4C$ 555
Thu 14/57:10 p.m.
YYZ
-
STL
Nonstop2h 09m
Air Canada
Sat 16/57:05 a.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 22/4C$ 557
Wed 27/511:39 a.m.
YYZ
-
STL
1 stop9h 51m
American Airlines
Wed 10/62:33 p.m.
STL
-
YYZ
1 stop7h 56m
American Airlines
Deal found 21/4C$ 568

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 24 April 2026.

Round-trip from

C$ 528

One-way from

C$ 257

Popular in

April

Cheapest in

June

Average price

C$ 1,096

Good round-trip deal

C$ 874 or less
27/5-10/6
  • 27/5-10/6
  • 3 total stops
  • 34h 59m total
  • Toronto to St. Louis
Search Deals
21/6
  • 21/6
  • 2 total stops
  • 26h 51m total
  • Toronto to St. Louis
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 114 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 54 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 629,999 searches. Data last updated 24 April 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 7/5

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 10/5

1:05 p.m.-7:58 p.m.

1 stop5h 53m

C$ 565

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 3/6

11:00 a.m.-12:06 p.m.

Nonstop2h 06m

Lambert-St Louis

Sat 6/6

1:05 p.m.-7:58 p.m.

1 stop5h 53m

C$ 580

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 3/6

7:55 a.m.-3:40 p.m.

1 stop8h 45m

Lambert-St Louis

Sat 6/6

6:45 a.m.-11:19 a.m.

1 stop3h 34m

C$ 581

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 15/6

7:00 p.m.-11:35 p.m.

1 stop5h 35m

Lambert-St Louis

Fri 19/6

8:15 p.m.-9:54 a.m.

1 stop12h 39m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 14/5

6:30 a.m.-10:32 a.m.

1 stop5h 02m

Lambert-St Louis

Sat 16/5

6:45 a.m.-1:30 p.m.

1 stop5h 45m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 5/6

8:50 a.m.-10:44 p.m.

1 stop14h 54m

Lambert-St Louis

Fri 12/6

5:41 p.m.-11:59 p.m.

1 stop5h 18m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 4/6

4:04 p.m.-9:09 p.m.

1 stop6h 05m

Lambert-St Louis

Mon 8/6

3:57 p.m.-9:59 p.m.

1 stop5h 02m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 20/5

5:20 p.m.-9:18 p.m.

1 stop4h 58m

Lambert-St Louis

Wed 27/5

11:25 a.m.-7:37 p.m.

1 stop7h 12m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 13/6

4:10 p.m.-8:39 p.m.

1 stop5h 29m

Lambert-St Louis

Tue 16/6

1:39 p.m.-9:59 p.m.

1 stop7h 20m

C$ 583

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/5

11:29 a.m.-5:46 p.m.

1 stop7h 17m

Lambert-St Louis

Wed 10/6

5:24 p.m.-11:58 p.m.

1 stop5h 34m

C$ 583

Flights are sorted by cheapest round-trip flights first.

Deals found on 21/4

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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 79 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, June is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of C$ 538). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,096). 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 24 April 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.

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 24 April 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
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
8,451 reviews
Delta
7.9
Good
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
9,643 reviews
Delta
7.9
Good
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
3,325 reviews
Delta
7.9
Good
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
11,666 reviews
Delta
7.9
Good
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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
10,961 reviews
Delta
7.9
Good
8,451 reviews
Check prices

Food

7.2

Boarding

8.1

Comfort

7.9

Crew

8.5

Entertainment

7.8

Overall

7.9

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 2 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 06m. Fly via Air Canada 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 50% 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 (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?

    While on average a flight from Toronto Pearson Intl Airport to St. Louis is generally C$ 958, our data shows the cheapest flight currently is C$ 677. 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, June is the cheapest month in which you can book a flight from Toronto Pearson Intl Airport to St. Louis (average of C$ 538). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,096). 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

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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
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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 24 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 329AverageC$ 573FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 361AverageC$ 679FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 454AverageC$ 594FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 470AverageC$ 607FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
WestJetCheapestC$ 552AverageC$ 976FlexibilityNo cancel feeOn-time60%
Search WestJet 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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