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Cheap flights from St. Louis to Toronto from C$ 168

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YTO
26 Jan — 2 Feb1
1 adult

The best prices from Lambert-St Louis to Toronto are usually found in March or May, booked 52 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from St. Louis to Toronto

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Toronto (YTO). 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 21 January 2025.

Round-trip from

C$ 350

One-way from

C$ 168

Popular in

February

Cheapest in

March

Average price

C$ 410
4/3-11/3
  • 4/3-11/3
  • 2 total stops
  • 27h 27m total
  • St. Louis to Toronto
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24/2
  • 24/2
  • 1 total stop
  • 30h 35m total
  • St. Louis to Toronto
Search Deals
High demand for flights, 1% potential price rise
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Best time to find cheap flights, 6% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from St. Louis to Toronto

Cheapest flights from St. Louis to Toronto
Explore the most affordable flight options available from St. Louis to Toronto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 January 2025.

Tue 4/35:20 p.m.STL - YYZ
1 stop17h 25mMultiple Airlines
Tue 11/37:40 a.m.YYZ - STL
1 stop10h 02mMultiple Airlines
Deal found 19/1C$ 350
Thu 27/26:06 a.m.STL - YYZ
1 stop9h 02mDelta
Sat 1/310:05 a.m.YYZ - STL
1 stop8h 52mDelta
Deal found 19/1C$ 726
Tue 4/37:00 a.m.STL - YYZ
1 stop30h 55mAlaska Airlines
Tue 11/34:20 p.m.YYZ - STL
1 stop32h 39mAlaska Airlines
Deal found 19/1C$ 728
Thu 13/25:00 a.m.STL - YYZ
1 stop10h 44mBritish Airways
Sun 16/26:15 a.m.YYZ - STL
1 stop4h 37mBritish Airways
Deal found 19/1C$ 747
Sat 15/26:04 a.m.STL - YYZ
1 stop9h 40mAmerican Airlines
Sat 22/26:15 a.m.YYZ - STL
1 stop11h 06mAmerican Airlines
Deal found 18/1C$ 775
Thu 6/33:50 p.m.STL - YYZ
Nonstop1h 55mAir Canada
Thu 13/31:50 p.m.YYZ - STL
Nonstop2h 16mAir Canada
Deal found 19/1C$ 812
Thu 13/25:45 a.m.STL - YYZ
2 stops9h 23mWestJet
Sun 16/21:14 p.m.YYZ - STL
1 stop5h 51mWestJet
Deal found 19/1C$ 834
Sat 15/28:25 a.m.STL - YYZ
1 stop23h 09mUnited Airlines
Sat 22/26:15 a.m.YYZ - STL
2 stops11h 51mUnited Airlines
Deal found 18/1C$ 862

Find flights from St. Louis to Toronto within your budget

Customize your flight search to find flights from St. Louis to Toronto 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 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 4/3

5:20 p.m.-11:45 a.m.

1 stop17h 25m

Toronto Pearson Intl

Tue 11/3

7:40 a.m.-4:42 p.m.

1 stop10h 02m

C$ 350

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 27/2

6:06 a.m.-4:08 p.m.

1 stop9h 02m

Toronto Pearson Intl

Sat 1/3

10:05 a.m.-5:57 p.m.

1 stop8h 52m

C$ 726

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 4/3

7:00 a.m.-2:55 p.m.

1 stop30h 55m

Toronto Pearson Intl

Tue 11/3

4:20 p.m.-11:59 p.m.

1 stop32h 39m

C$ 728

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 13/2

5:00 a.m.-4:44 p.m.

1 stop10h 44m

Toronto Pearson Intl

Sun 16/2

6:15 a.m.-9:52 a.m.

1 stop4h 37m

C$ 747

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 15/2

6:04 a.m.-4:44 p.m.

1 stop9h 40m

Toronto Pearson Intl

Sat 22/2

6:15 a.m.-4:21 p.m.

1 stop11h 06m

C$ 775

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 6/3

3:50 p.m.-6:45 p.m.

Nonstop1h 55m

Toronto Pearson Intl

Thu 13/3

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

Nonstop2h 16m

C$ 812

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 13/2

5:45 a.m.-4:08 p.m.

2 stops9h 23m

Toronto Pearson Intl

Sun 16/2

1:14 p.m.-6:05 p.m.

1 stop5h 51m

C$ 834

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 15/2

8:25 a.m.-8:34 a.m.

1 stop23h 09m

Toronto Pearson Intl

Sat 22/2

6:15 a.m.-5:06 p.m.

2 stops11h 51m

C$ 862

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 24/2

11:08 p.m.-6:43 a.m.

1 stop30h 35m

C$ 168

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 12/2

6:00 a.m.-4:34 p.m.

1 stop9h 34m

C$ 324

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

Showing 1-10 of 15 results
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Best time to book a flight from St. Louis to Toronto

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Toronto. Price data was last updated on 17 January 2025.

Booking 52 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Toronto. 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 St. Louis to Toronto?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Toronto (average of C$ 168). Flying from St. Louis to Toronto in July is currently the most expensive (average of C$ 258). 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 STL to YTO?

Find hourly flight availability from St. Louis to Toronto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 January 2025.

One of the essential ways to save on airfare from St. Louis to Toronto is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 64% on airfare.

Weekly flight availability from St. Louis to Toronto

Explore weekly flight availability from St. Louis to Toronto. 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 21 January 2025.

The most flights from STL to YTO are scheduled on a Monday (2 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Toronto by month

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

In terms of precipitation, rainfall in Toronto ranges from 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Toronto when rainfall is around 51.0 mm.

Temperature in Toronto by month

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

If weather is an important factor for your trip to Toronto, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

Reviews of airlines servicing Toronto

Get insights into the airlines that provide service to Toronto. 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 Toronto. Reviews last updated 21 January 2025.
Get a feel of what it's like to fly with Delta, American Airlines and Air Canada from St. Louis to Toronto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
9,696 reviews
Alaska Airlines
8.0
Very good
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
8,521 reviews
Alaska Airlines
8.0
Very good
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
8,982 reviews
Alaska Airlines
8.0
Very good
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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
2,828 reviews
Alaska Airlines
8.0
Very good
9,696 reviews
Check prices

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

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 St. Louis to Toronto. 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 from for flights from St. Louis to Toronto?

    Most people fly from Lambert-St Louis (STL) if they book a flight from St. Louis to Toronto. On average, Lambert-St Louis has 1 outbound flight to Toronto per day from 1 airline. Lambert-St Louis is conveniently located just 20.4 km from St. Louis’s city centre.

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

    Our cheapest airline available from St. Louis to Toronto is Delta. Our recent data shows that you can find tickets from as low as C$ 726 on this airline. Additional options worth looking into are Alaska Airlines and British Airways, starting at C$ 728 and C$ 747 round-trip.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as C$ 324. Users have also found prices from C$ 384 and C$ 393 on Alaska Airlines and United Airlines, respectively.

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

    Consider Air Canada (74%), Jazz (74%) or United Airlines (74%) when booking your flight. These represent the most reliable airlines when flying from St. Louis to Toronto.

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

    While on average a flight from St. Louis to Toronto is generally C$ 535, our data shows the cheapest flight currently is C$ 392. When looking at the most popular route, (Lambert-St Louis - Toronto Pearson Intl), you can expect to pay C$ 514 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Toronto (average of C$ 168). Flying from St. Louis to Toronto in July is currently the most expensive (average of C$ 258). 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 airline flying from St. Louis to Toronto

Discover the top airline that operate flights from St. Louis to Toronto. 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 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 371AverageC$ 804FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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

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Why should you use Cheapflights to find cheap flight tickets from St. Louis to Toronto?

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Yes! Cheapflights helps users easily find flights from St. Louis to Toronto with no change fees.

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

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