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Cheap flights from Toronto Pearson Intl Airport to St. Louis from C$ 252

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
YYZ — STL
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from Toronto Pearson Intl to Lambert-St Louis are usually found in May or April, booked 75 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

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 25 March 2025.

Round-trip from

C$ 540

One-way from

C$ 252

Popular in

September

Cheapest in

May

Average price

C$ 715

Good round-trip deal

C$ 592 or less
Air Canada
  • Air Canada
  • 7/5-10/5
  • Nonstop
  • 4h 06m total
  • Toronto to St. Louis
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8/4
  • 8/4
  • 2 total stops
  • 17h 36m total
  • Toronto to St. Louis
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
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Average for round-trip flights in March 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 25 March 2025.

Fri 5/92:10 p.m.YYZ - STL
Nonstop2h 06mAir Canada
Mon 8/94:05 p.m.STL - YYZ
Nonstop1h 55mAir Canada
Deal found 24/3C$ 563
Thu 15/57:45 a.m.YYZ - STL
1 stop9h 50mDelta
Sun 18/56:00 a.m.STL - YYZ
1 stop4h 40mDelta
Deal found 24/3C$ 572
Wed 23/41:15 p.m.YYZ - STL
1 stop11h 18mAmerican Airlines
Wed 30/45:45 a.m.STL - YYZ
1 stop10h 50mAmerican Airlines
Deal found 24/3C$ 579
Fri 4/47:10 a.m.YYZ - STL
1 stop17h 36mMultiple Airlines
Tue 6/55:47 p.m.STL - YYZ
1 stop29h 00mMultiple Airlines
Deal found 24/3C$ 587
Mon 21/47:45 a.m.YYZ - STL
1 stop5h 00mWestJet
Mon 28/45:32 p.m.STL - YYZ
1 stop5h 24mWestJet
Deal found 24/3C$ 597
Wed 23/46:15 a.m.YYZ - STL
2 stops7h 05mUnited Airlines
Wed 30/410:40 a.m.STL - YYZ
1 stop4h 06mUnited Airlines
Deal found 24/3C$ 616
Wed 23/46:30 a.m.YYZ - STL
2 stops18h 29mAlaska Airlines
Wed 30/46:15 a.m.STL - YYZ
2 stops31h 45mAlaska Airlines
Deal found 24/3C$ 1,029

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 25 March 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 5/9

2:10 p.m.-3:16 p.m.

Nonstop2h 06m

Lambert-St Louis

Mon 8/9

4:05 p.m.-7:00 p.m.

Nonstop1h 55m

C$ 563

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 15/5

7:45 a.m.-4:35 p.m.

1 stop9h 50m

Lambert-St Louis

Sun 18/5

6:00 a.m.-11:40 a.m.

1 stop4h 40m

C$ 572

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 23/4

1:15 p.m.-11:33 p.m.

1 stop11h 18m

Lambert-St Louis

Wed 30/4

5:45 a.m.-5:35 p.m.

1 stop10h 50m

C$ 579

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 4/4

7:10 a.m.-11:46 p.m.

1 stop17h 36m

Lambert-St Louis

Tue 6/5

5:47 p.m.-11:47 p.m.

1 stop29h 00m

C$ 587

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 21/4

7:45 a.m.-11:45 a.m.

1 stop5h 00m

Lambert-St Louis

Mon 28/4

5:32 p.m.-11:56 p.m.

1 stop5h 24m

C$ 597

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 23/4

6:15 a.m.-12:20 p.m.

2 stops7h 05m

Lambert-St Louis

Wed 30/4

10:40 a.m.-3:46 p.m.

1 stop4h 06m

C$ 616

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 23/4

6:30 a.m.-11:59 p.m.

2 stops18h 29m

Lambert-St Louis

Wed 30/4

6:15 a.m.-3:00 p.m.

2 stops31h 45m

C$ 1,029

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 7/5

4:00 p.m.-12:06 a.m.

1 stop9h 06m

C$ 258

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 6/5

11:30 a.m.-12:36 p.m.

Nonstop2h 06m

C$ 305

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/5

6:05 p.m.-9:31 p.m.

1 stop4h 26m

C$ 325

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/3

Showing 1-10 of 12 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 21 March 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 75 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 25 March 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 17% 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 25 March 2025.

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

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

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 25 March 2025.
To help decide which airline to fly from Toronto to St. Louis, see what other customers have to say about Alaska Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
WestJet
7.2
Good
2,785 reviews
Alaska Airlines
8.0
Very good
9,785 reviews
Check prices

Overall

8.0

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Crew

8.5

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 2 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$ 540, was found to be the cheapest airline from Toronto Pearson Intl Airport to St. Louis.Alternate airlines to your destination round-trip include Delta and American Airlines. Air Canada is 24% 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$ 305 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from C$ 325 and C$ 340, 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 Air Canada (79%), Jazz (79%) or United Airlines (79%) 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$ 681, our data shows the cheapest flight currently is C$ 502. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 476 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
St. Peters
Chesterfield

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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 Quincy flights
Pearson Intl to Columbia 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 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 535AverageC$ 721FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 600AverageC$ 709FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 632AverageC$ 781FlexibilityNo 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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