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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 293

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 30/6. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
5 Jul — 12 Jul1
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 January, booked 80 days in advance, depart on a Saturday or Wednesday and return on a Thursday

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 5 June 2026.

Fri 19/611:15 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 21/68:40 a.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 1/6C$ 531
Wed 17/611:00 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sat 20/68:40 a.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 1/6C$ 532
Thu 25/64:00 p.m.
YYZ
-
STL
1 stop5h 25m
Air Canada
Tue 30/68:40 a.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 1/6C$ 545
Thu 16/712:55 p.m.
YYZ
-
STL
Nonstop2h 07m
Air Canada
Wed 22/72:40 p.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 1/6C$ 549
Thu 27/82:00 p.m.
YYZ
-
STL
1 stop5h 42m
Air Canada
Thu 3/98:55 a.m.
STL
-
YYZ
Nonstop1h 57m
Air Canada
Deal found 1/6C$ 553
Tue 1/911:39 a.m.
YYZ
-
STL
1 stop8h 48m
American Airlines
Mon 7/96:00 a.m.
STL
-
YYZ
1 stop7h 33m
American Airlines
Deal found 4/6C$ 555
Wed 23/96:30 a.m.
YYZ
-
STL
1 stop7h 46m
American Airlines
Sat 26/95:00 a.m.
STL
-
YYZ
1 stop8h 32m
American Airlines
Deal found 2/6C$ 556
Thu 18/611:15 a.m.
YYZ
-
STL
Nonstop2h 06m
Air Canada
Sun 21/62:15 p.m.
STL
-
YYZ
Nonstop1h 51m
Air Canada
Deal found 31/5C$ 584

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 5 June 2026.

Round-trip from

C$ 531

One-way from

C$ 293

Popular in

April

Cheapest in

June

Average price

C$ 562

Good round-trip deal

C$ 583 or less

Good one-way deal

C$ 352 or less
Air Canada
  • Air Canada
  • 19/6-21/6
  • Nonstop
  • 4h 03m total
  • Toronto to St. Louis
Search Deals
American Airlines
  • American Airlines
  • 30/6
  • 1 total stop
  • 10h 08m total
  • Toronto to St. Louis
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 131 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 56 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 629,999 searches. Data last updated 5 June 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 25/6

5:15 p.m.-9:26 p.m.

1 stop5h 11m

Lambert-St Louis

Tue 30/6

1:13 p.m.-11:54 p.m.

2 stops9h 41m

C$ 641

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 17/7

9:00 p.m.-8:39 a.m.

1 stop12h 39m

Lambert-St Louis

Sun 26/7

9:20 a.m.-3:46 p.m.

1 stop5h 26m

C$ 652

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 16/7

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

1 stop6h 11m

Lambert-St Louis

Tue 21/7

6:00 a.m.-2:19 p.m.

2 stops7h 19m

C$ 652

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 25/6

6:15 a.m.-10:37 a.m.

1 stop5h 22m

Lambert-St Louis

Sun 28/6

7:30 a.m.-2:59 p.m.

1 stop6h 29m

C$ 710

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 30/6

8:45 a.m.-12:11 p.m.

1 stop4h 26m

Lambert-St Louis

Tue 7/7

1:13 p.m.-10:23 p.m.

2 stops8h 10m

C$ 713
Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 18/6

11:15 a.m.-12:21 p.m.

Nonstop2h 06m

Lambert-St Louis

Sun 21/6

2:15 p.m.-5:06 p.m.

Nonstop1h 51m

C$ 740

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 21/7

12:55 p.m.-2:02 p.m.

Nonstop2h 07m

Lambert-St Louis

Thu 23/7

7:20 a.m.-3:46 p.m.

1 stop7h 26m

C$ 760

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 10/7

7:00 p.m.-8:07 p.m.

Nonstop2h 07m

Lambert-St Louis

Mon 13/7

1:38 p.m.-9:32 p.m.

1 stop6h 54m

C$ 760

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 11/8

7:00 a.m.-12:02 p.m.

1 stop6h 02m

Lambert-St Louis

Tue 11/8

5:30 p.m.-8:11 a.m.

2 stops13h 41m

C$ 769

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 27/8

7:00 p.m.-8:07 p.m.

Nonstop2h 07m

Lambert-St Louis

Mon 31/8

8:55 a.m.-11:52 a.m.

Nonstop1h 57m

C$ 822

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/5

Showing 1-10 of 21 resultsSorted by cheapest first
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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$ 562). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,113). 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 5 June 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 23% versus a flight in the afternoon.

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 5 June 2026.
See what other customers who have flown with United Airlines,WestJet, andAmerican Airlines 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
9,775 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,775 reviews
United Airlines
7.4
Good
9,775 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
WestJet
7.2
Good
3,350 reviews
United Airlines
7.4
Good
9,775 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,644 reviews
United Airlines
7.4
Good
9,775 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,127 reviews
United Airlines
7.4
Good
9,775 reviews
Check prices

Boarding

7.7

Overall

7.4

Food

6.6

Entertainment

7.1

Crew

8.1

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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. 4 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 3 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 5h 11m. Fly via United Airlines or American Airlines 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$ 347, 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 49% 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 Air Canada (90%), Jazz (89%) or United Airlines (85%) 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$ 795, our data shows the cheapest flight currently is C$ 334. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 605 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$ 562). Flying from Toronto Pearson Intl Airport to St. Louis in April is currently the most expensive (average of C$ 1,113). 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 4 airlines flying from Pearson Intl to St. Louis

Discover the top 4 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 5 June 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 347AverageC$ 637FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 367AverageC$ 690FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 443AverageC$ 649FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 632AverageC$ 992FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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

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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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