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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 255

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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
8 Jul — 15 Jul1
1 adult

Cheapflights Tip: The best prices from Toronto Pearson Intl to Lambert-St Louis are usually found in May or June, booked 90 days in advance, depart on a Thursday or Tuesday and return on a Tuesday

Cheap 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 3 July 2025.

Round-trip from

C$ 417

One-way from

C$ 255

Popular in

December

Cheapest in

May

Average price

C$ 609

Good round-trip deal

C$ 530 or less
Air Canada
  • Air Canada
  • 15/8-17/8
  • Nonstop
  • 4h 06m total
  • Toronto to St. Louis
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American Airlines
  • American Airlines
  • 27/8
  • 1 total stop
  • 10h 13m total
  • Toronto to St. Louis
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Highest demand for flights based on searches. 9% potential increase in price (C$ 89 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Toronto Pearson Intl to Lambert-St Louis.
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Find 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 3 July 2025.

Fri 15/82:15 p.m.YYZ - STL
Nonstop2h 06mAir Canada
Sun 17/89:15 a.m.STL - YYZ
Nonstop2h 00mAir Canada
Deal found 3/7C$ 417
Tue 9/91:15 p.m.YYZ - STL
1 stop9h 38mAmerican Airlines
Thu 11/96:05 a.m.STL - YYZ
1 stop7h 26mAmerican Airlines
Deal found 2/7C$ 446
Sat 16/81:16 p.m.YYZ - STL
1 stop8h 00mIberia
Mon 18/87:23 a.m.STL - YYZ
1 stop15h 06mIberia
Deal found 2/7C$ 458
Fri 1/85:15 p.m.YYZ - STL
1 stop6h 30mUnited Airlines
Mon 4/85:30 p.m.STL - YYZ
1 stop5h 28mUnited Airlines
Deal found 3/7C$ 470
Fri 11/71:04 p.m.YYZ - STL
1 stop4h 38mDelta
Mon 14/71:29 p.m.STL - YYZ
1 stop7h 30mDelta
Deal found 3/7C$ 523
Mon 14/71:30 p.m.YYZ - STL
1 stop28h 01mMultiple Airlines
Thu 17/79:50 a.m.STL - YYZ
2 stops10h 18mMultiple Airlines
Deal found 30/6C$ 532

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 3 July 2025.
Use the filters below to find and compare flights from Toronto Pearson Intl Airport to St. Louis that are best for you.

Fly from

Pearson Intl

Fly to

St. Louis

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 15/8

6:35 p.m.-7:45 p.m.

Nonstop2h 10m

Lambert-St Louis

Sun 17/8

4:00 p.m.-7:00 p.m.

Nonstop2h 00m

C$ 433

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 9/9

3:11 p.m.-9:53 p.m.

1 stop7h 42m

Lambert-St Louis

Thu 11/9

6:05 a.m.-2:31 p.m.

1 stop7h 26m

C$ 446

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 16/8

1:16 p.m.-8:16 p.m.

1 stop8h 00m

Lambert-St Louis

Mon 18/8

7:23 a.m.-11:29 p.m.

1 stop15h 06m

C$ 458

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 1/8

7:00 a.m.-12:27 p.m.

1 stop6h 27m

Lambert-St Louis

Mon 4/8

8:00 a.m.-1:42 p.m.

1 stop4h 42m

C$ 470

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 5/9

6:29 p.m.-8:32 p.m.

1 stop27h 03m

Lambert-St Louis

Sun 7/9

6:05 a.m.-5:47 p.m.

1 stop10h 42m

C$ 491

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 1/8

6:15 a.m.-11:34 a.m.

1 stop6h 19m

Lambert-St Louis

Mon 4/8

5:23 p.m.-11:59 p.m.

1 stop5h 36m

C$ 523

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/8

11:39 a.m.-8:52 p.m.

1 stop10h 13m

C$ 255

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 11/7

4:30 p.m.-8:50 p.m.

1 stop5h 20m

C$ 259

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 16/8

1:16 p.m.-8:16 p.m.

1 stop8h 00m

C$ 260

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 27/8

2:00 p.m.-9:18 a.m.

3 stops20h 18m

C$ 274

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/6

Showing 1-10 of 13 results
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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?

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 June 2025.

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 84 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$ 365). Flying from Toronto Pearson Intl Airport to St. Louis in September is currently the most expensive (average of C$ 491). 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 3 July 2025.

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 in the morning, which can drop the price by up to 22% versus a flight at noon.

Weekly flight availability from Toronto Pearson Intl Airport to St. Louis

Explore weekly flight availability from Pearson Intl to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 July 2025.

The most flights from YYZ to STL are scheduled on a Monday (4 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (2 on average).

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 3 July 2025.
See what other customers who have flown with Delta,United Airlines, 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.
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,970 reviews
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,845 reviews
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,917 reviews
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,678 reviews
Delta
8.0
Very good
7,970 reviews
Check prices

Comfort

7.9

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 3 inbound flights from Toronto Pearson Intl per day.

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

    Air Canada, at C$ 417, 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 Iberia. Air Canada is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Toronto Pearson Intl Airport to St. Louis one-way?

    C$ 255 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Air Canada and Iberia, with prices starting from C$ 259 and C$ 260, respectively.

  • 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 (91%), Air Canada (86%) or United Airlines (73%) 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$ 671, our data shows the cheapest flight currently is C$ 441. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 452 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$ 365). Flying from Toronto Pearson Intl Airport to St. Louis in September is currently the most expensive (average of C$ 491). 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 Toronto Pearson Intl Airport?

Book flights to Toronto Pearson Intl Airport if you plan to visit one of these locations
Chesterfield
St. Peters

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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 3 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 465AverageC$ 663FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 473AverageC$ 662FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 550AverageC$ 723FlexibilityNo 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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