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Cheap flights from Toronto to St. Louis from C$ 202

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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
YTO — STL
25 Feb — 4 Mar1
1 adult

The best prices from Toronto to Lambert-St Louis are usually found in May or April, booked 78 days in advance, depart on a Thursday or Tuesday and return on a Wednesday

Cheap flight deals from Toronto to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Toronto (YTO) 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 20 February 2025.

Round-trip from

C$ 577

One-way from

C$ 250

Popular in

January

Cheapest in

May

Average price

C$ 705

Good round-trip deal

C$ 682 or less

Good one-way deal

C$ 808 or less
Air Canada
  • Air Canada
  • 4/4-11/4
  • Nonstop
  • 4h 09m total
  • Toronto to St. Louis
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4/4
  • 4/4
  • 1 total stop
  • 17h 36m total
  • Toronto to St. Louis
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Highest demand for flights based on searches. 6% potential increase in price (C$ 66 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 February 2025
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Price to beat on a round-trip flight from Toronto (YTO) to Lambert-St Louis.
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Price to beat on a one-way flight from Toronto (YTO) to Lambert-St Louis.
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Find flight deals from Toronto to St. Louis

Cheapest flights from Toronto to St. Louis
Explore the most affordable flight options available from Toronto to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2025.

Fri 4/41:40 p.m.YYZ - STL
Nonstop2h 09mAir Canada
Fri 11/43:30 p.m.STL - YYZ
Nonstop2h 00mAir Canada
Deal found 19/2C$ 577
Tue 1/411:30 a.m.YYZ - STL
1 stop11h 48mAmerican Airlines
Sat 5/412:00 p.m.STL - YYZ
1 stop10h 25mAmerican Airlines
Deal found 19/2C$ 594
Sun 6/41:40 p.m.YYZ - STL
Nonstop2h 09mUnited Airlines
Sun 13/43:30 p.m.STL - YYZ
Nonstop2h 00mUnited Airlines
Deal found 19/2C$ 597
Mon 24/310:05 a.m.YYZ - STL
1 stop11h 47mDelta
Sun 30/36:50 a.m.STL - YYZ
1 stop4h 05mDelta
Deal found 20/2C$ 608
Thu 20/37:15 a.m.YYZ - STL
3 stops37h 55mMultiple Airlines
Thu 27/31:00 p.m.STL - YYZ
3 stops23h 55mMultiple Airlines
Deal found 20/2C$ 652
Tue 25/39:30 a.m.YYZ - STL
2 stops8h 22mWestJet
Sun 30/36:00 a.m.STL - YYZ
1 stop6h 33mWestJet
Deal found 20/2C$ 703
Fri 11/44:30 p.m.YYZ - STL
2 stops17h 31mAlaska Airlines
Fri 18/43:11 p.m.STL - YYZ
2 stops20h 24mAlaska Airlines
Deal found 19/2C$ 1,152

Find flights from Toronto to St. Louis within your budget

Customize your flight search to find flights from Toronto 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 20 February 2025.

Fly from

Toronto

Fly to

St. Louis

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 21/3

6:52 a.m.-4:45 p.m.

2 stops10h 53m

Lambert-St Louis

Sun 23/3

6:47 p.m.-11:42 a.m.

1 stop15h 55m

C$ 577

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

1:40 p.m.-2:49 p.m.

Nonstop2h 09m

Lambert-St Louis

Sat 5/4

3:30 p.m.-6:30 p.m.

Nonstop2h 00m

C$ 578

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

11:30 a.m.-10:18 p.m.

1 stop11h 48m

Lambert-St Louis

Sat 5/4

12:00 p.m.-11:25 p.m.

1 stop10h 25m

C$ 594

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

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

2 stops7h 05m

Lambert-St Louis

Sat 5/4

3:40 p.m.-11:54 p.m.

2 stops7h 14m

C$ 605

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 21/3

1:50 p.m.-3:06 p.m.

Nonstop2h 16m

Lambert-St Louis

Sun 23/3

5:33 p.m.-11:59 p.m.

1 stop5h 26m

C$ 624

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 24/3

10:05 a.m.-8:52 p.m.

1 stop11h 47m

Lambert-St Louis

Sun 30/3

6:50 a.m.-11:55 a.m.

1 stop4h 05m

C$ 641

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 22/4

9:30 a.m.-4:52 p.m.

2 stops8h 22m

Lambert-St Louis

Tue 6/5

11:23 a.m.-6:12 a.m.

2 stops17h 49m

C$ 679

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 19/3

4:20 p.m.-8:57 a.m.

2 stops17h 37m

Lambert-St Louis

Mon 24/3

6:44 a.m.-12:34 p.m.

2 stops28h 50m

C$ 1,033

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 1/4

7:05 a.m.-5:52 p.m.

1 stop11h 47m

C$ 202

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 3/5

3:00 p.m.-8:01 p.m.

1 stop6h 01m

C$ 327

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/2

Showing 1-10 of 13 results
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Best time to book a flight from Toronto to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Toronto 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.

Travel insights for flights from Toronto to St. Louis

Get recent, data-driven insights about flights from Toronto to St. Louis including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Toronto to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Toronto to St. Louis. Price data was last updated on 14 February 2025.

Booking 78 days in advance of your planned departure date is, on average, the best time to get cheap flights from Toronto to St. Louis. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Toronto to St. Louis?

Currently, January is the cheapest month in which you can book a flight from Toronto to St. Louis (average of C$ 365). Flying from Toronto 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 YTO to STL?

Find hourly flight availability from Toronto 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 20 February 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 6% on flights from Toronto to St. Louis by exploring options for tickets in the morning.

Weekly flight availability from Toronto to St. Louis

Explore weekly flight availability from Toronto 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 20 February 2025.

The most flights from YTO to STL are scheduled on a Wednesday (2 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 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 20 February 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and United Airlines from Toronto to St. Louis. 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
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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
9,697 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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
8,219 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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
8,765 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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
2,801 reviews
Alaska Airlines
8.0
Very good
9,697 reviews
Check prices

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

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 Toronto 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?

    If you book a flight to St. Louis from Toronto, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 20.4 km from the centre of St. Louis. There is 1 flight from Toronto to Lambert-St Louis per day from 3 different airlines.

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

    Flying on Air Canada is currently your cheapest option to St. Louis, with prices starting at C$ 577. Additional round-trip tickets that might be worth considering are offered by American Airlines and United Airlines, with the lowest prices starting at C$ 594 and C$ 597, respectively. Air Canada is currently priced 16% below the average price you’ll pay for this route.

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

    For one-way options, check prices for Delta. According to our data, you can fly for as low as C$ 297. Users have also found prices from C$ 324 and C$ 334 on Air Canada and United Airlines, respectively.

  • What are the most reliable airlines from Toronto to St. Louis?

    The top 3 most reliable airlines when flying from Toronto to St. Louis are Air Canada (70%), Jazz (70%) and United Airlines (70%).

  • What are the cheapest flights from Toronto to St. Louis?

    While on average a flight from Toronto to St. Louis is generally C$ 783, our data shows the cheapest flight currently is C$ 509. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 398 for that flight.

  • Can I find deals for flights from Toronto to St. Louis that include hotel bookings?

    Yes. In addition to deals on Toronto to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Toronto to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Toronto to St. Louis.

  • Can I find deals for business class flights from Toronto to St. Louis?

    Yes. Cheapflights offers flight deals from Toronto 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 to St. Louis?

    Currently, January is the cheapest month in which you can book a flight from Toronto to St. Louis (average of C$ 365). Flying from Toronto 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

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Top 3 airlines flying from Toronto to St. Louis

Discover the top 3 airlines that operate flights from Toronto 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 20 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 534AverageC$ 707FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 580AverageC$ 743FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 645AverageC$ 775FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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

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Can Cheapflights notify me if prices for flights from Toronto to St. Louis become cheaper?

Not ready to book yet? You can track prices for flights from Toronto to St. Louis on Cheapflights with our Price Alert feature and get notified when better prices are available.

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