Which layover airport has the shortest travel time from St. Louis to Toronto?

Flights connecting via Detroit (DTW) have the shortest average one-way travel time: 3h 44m.

How many flights depart from St. Louis to Toronto on average per day?

The number of flights available between St. Louis and Toronto is 4 per day as of September 2026. The most frequent departure time is 8:00AM, with 57% of daily flights leaving in the afternoon.

What airlines fly to Toronto?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Toronto from St. Louis according to our data. Air Canada is the first choice among our users, with 72% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 4 different airlines that fly to Toronto on a routine basis, so you have a few additional options to choose from.

How many flights depart from St. Louis to Toronto on average per week?

As of September 2026, 29 flights take off from St. Louis and land in Toronto each week. The most common flight departure day for this route is Wed, with 17% of weekly flights taking off on this day.

Which layover airport has the shortest connection time from St. Louis to Toronto?

Detroit (DTW) has the shortest average layover time for this route: 1h 01m.

What is the cheapest airline that flies from Lambert-St Louis to Toronto?

American Airlines is the most popular carrier operating from Lambert-St Louis to Toronto

Which layover airport offers the lowest fares from St. Louis to Toronto?

Flights via Chicago (ORD) offer the lowest average round-trip price of $610.

Which airport is the most popular layover for flights between St. Louis and Toronto?

Detroit (DTW) was the most common stop: 60% of momondo users choosing 1-stop flights on this route connected there.

When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto?

Prices for flights from Lambert-St Louis Airport to Toronto are updated daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto?

As of September 2026, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Toronto.

How old do you have to be to fly from Lambert-St Louis Airport to Toronto?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Toronto.

What documentation or ID do you need to fly to Toronto?

The required travel and health documents for your Toronto trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$133 Cheap Flights from St. Louis to Toronto in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Toronto

Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:00 am - 5:41 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

10h 41m1 stop Chicago O'Hare Intl

3:15 pm - 10:15 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

8h 00m1 stop Chicago O'Hare Intl

$354American Airlines

Mon, Nov 9 - Tue, Nov 17

6:00 am - 5:41 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

10h 41m1 stop Chicago O'Hare Intl

3:15 pm - 11:59 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

9h 44m1 stop Chicago O'Hare Intl

$354American Airlines

Wed, Nov 4 - Wed, Nov 11

6:44 pm - 3:20 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

19h 36m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

6:30 am - 11:16 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

17h 46m1 stop Orlando

$359Multiple Airlines

Wed, Oct 28 - Sat, Oct 31

6:44 pm - 3:20 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

19h 36m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale

4:20 pm - 5:40 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

26h 20m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson

$361Multiple Airlines

Wed, Oct 28 - Sun, Nov 1

9:40 am - 6:45 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 05m1 stop Chicago O'Hare Intl

12:00 pm - 9:40 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

10h 40m1 stop Chicago O'Hare Intl

$530United Airlines

Tue, Oct 27 - Thu, Oct 29

7:30 am - 4:47 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 17m1 stop Chicago O'Hare Intl

8:20 am - 3:43 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

8h 23m1 stop Chicago O'Hare Intl

$530United Airlines

Mon, Oct 26 - Tue, Oct 27

6:21 am - 6:29 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

11h 08m1 stop Minneapolis St Paul

7:34 pm - 10:38 amYYZ Toronto Pearson Intl-STL Lambert-St Louis

16h 04m1 stop Minneapolis St Paul

$539Delta

Wed, Oct 28 - Fri, Oct 30

6:21 am - 11:15 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

15h 54m1 stop Minneapolis St Paul

7:34 pm - 10:38 amYYZ Toronto Pearson Intl-STL Lambert-St Louis

16h 04m1 stop Minneapolis St Paul

$539Delta

Tue, Oct 27 - Fri, Oct 30

4:05 pm - 6:59 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$717Air Canada

Sat, Oct 31 - Mon, Nov 2

4:05 pm - 6:59 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$783Air Canada

Mon, Oct 26 - Fri, Oct 30

Cheap last minute flights

Enter your travel dates to find the best prices.

7:27 am - 12:35 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

4h 08m1 stop Chicago O'Hare Intl

6:30 am - 10:18 amYYZ Toronto Pearson Intl-STL Lambert-St Louis

4h 48m1 stop Chicago O'Hare Intl

$834Japan Airlines

Sun, Sep 27 - Tue, Sep 29

3:52 pm - 6:34 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

25h 42m1 stop Minneapolis St Paul

6:30 pm - 10:55 amYYZ Toronto Pearson Intl-STL Lambert-St Louis

17h 25m2 stops Calgary Atlanta Hartsfield-Jackson

$912WestJet

Sat, Sep 26 - Mon, Sep 28

8:00 am - 6:09 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

9h 09m1 stop New York LaGuardia

6:00 am - 3:36 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

10h 36m1 stop New York LaGuardia

$939Delta

Sat, Sep 26 - Mon, Sep 28

1:01 pm - 11:39 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

9h 38m1 stop New York LaGuardia

7:55 am - 3:36 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

8h 41m1 stop New York LaGuardia

$949Delta

Fri, Sep 25 - Tue, Sep 29

8:54 am - 6:45 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 51m1 stop New York LaGuardia

7:27 am - 3:57 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

9h 30m1 stop New York LaGuardia

$980American Airlines

Sat, Sep 26 - Mon, Sep 28

8:54 am - 6:45 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

8h 51m1 stop New York LaGuardia

12:49 pm - 9:17 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

9h 28m1 stop New York LaGuardia

$1,008American Airlines

Sat, Sep 26 - Sun, Sep 27

8:55 am - 11:49 amSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:00 pm - 7:01 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

6h 01m1 stop Chicago O'Hare Intl

$1,077Air Canada

Sat, Sep 26 - Mon, Sep 28

8:55 am - 11:49 amSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

7:43 pm - 9:41 amYYZ Toronto Pearson Intl-STL Lambert-St Louis

14h 58m1 stop Washington, D.C. Dulles Intl

$1,134United Airlines

Sun, Sep 27 - Wed, Sep 30

11:35 am - 7:37 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

7h 02m1 stop Chicago O'Hare Intl

12:55 pm - 2:00 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$1,140Air Canada

Sun, Sep 27 - Wed, Sep 30

1:29 pm - 8:18 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

5h 49m1 stop Chicago O'Hare Intl

7:15 pm - 8:20 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$1,140United Airlines

Sun, Sep 27 - Wed, Sep 30

Cheap direct flights

Enter your travel dates to find the best prices.

4:05 pm - 6:59 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$717Air Canada

Sat, Oct 31 - Mon, Nov 2

4:05 pm - 6:59 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$783Air Canada

Mon, Oct 26 - Fri, Oct 30

4:05 pm - 6:59 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$783Air Canada

Mon, Oct 26 - Sun, Nov 1

2:40 pm - 5:34 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$783Air Canada

Fri, Oct 23 - Thu, Oct 29

2:40 pm - 5:34 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

2:10 pm - 3:23 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 13mnonstop

$912United Airlines

Tue, Oct 20 - Tue, Oct 27

2:40 pm - 5:34 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

12:55 pm - 2:00 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$963United Airlines

Mon, Oct 5 - Wed, Oct 7

2:40 pm - 5:34 pmSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

7:15 pm - 8:20 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$963United Airlines

Mon, Oct 5 - Thu, Oct 8

8:55 am - 11:49 amSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

12:55 pm - 2:00 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$963Multiple Airlines

Wed, Oct 7 - Sun, Oct 11

8:55 am - 11:49 amSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

12:55 pm - 2:00 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$1,242Multiple Airlines

Sat, Oct 17 - Sun, Oct 18

8:55 am - 11:49 amSTL Lambert-St Louis-YYZ Toronto Pearson Intl

1h 54mnonstop

12:55 pm - 2:00 pmYYZ Toronto Pearson Intl-STL Lambert-St Louis

2h 05mnonstop

$1,802Multiple Airlines

Thu, Oct 15 - Mon, Oct 19

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Delta flights from St. Louis to Toronto

Our best Delta deals on St. Louis to Toronto flight tickets

Delta

Oct 1

STL7:00 amLambert-St Louis

10h 09m

1 stop

YYZ6:09 pmToronto Pearson Intl

Oct 7

YYZ7:55 amToronto Pearson Intl

8h 44m

1 stop

STL3:39 pmLambert-St Louis

$872

Delta

Oct 1

STL6:40 amLambert-St Louis

10h 29m

2 stops

YYZ6:09 pmToronto Pearson Intl

Oct 7

YYZ6:00 amToronto Pearson Intl

10h 39m

1 stop

STL3:39 pmLambert-St Louis

$882

Delta

Sep 26

STL8:00 amLambert-St Louis

9h 09m

1 stop

YYZ6:09 pmToronto Pearson Intl

Sep 28

YYZ6:00 amToronto Pearson Intl

10h 36m

1 stop

STL3:36 pmLambert-St Louis

$939

American Airlines flights from St. Louis to Toronto

Our best American Airlines deals on St. Louis to Toronto flight tickets

American Airlines

Oct 22

STL7:29 amLambert-St Louis

9h 15m

1 stop

YYZ5:44 pmToronto Pearson Intl

Oct 27

YYZ7:29 amToronto Pearson Intl

10h 24m

1 stop

STL4:53 pmLambert-St Louis

$354

American Airlines

Oct 30

STL7:29 amLambert-St Louis

9h 15m

1 stop

YYZ5:44 pmToronto Pearson Intl

Nov 2

YYZ11:36 amToronto Pearson Intl

8h 46m

1 stop

STL7:22 pmLambert-St Louis

$381

American Airlines

Dec 11

STL6:00 amLambert-St Louis

7h 34m

1 stop

YYZ2:34 pmToronto Pearson Intl

Jan 5

YYZ11:45 amToronto Pearson Intl

9h 07m

1 stop

STL7:52 pmLambert-St Louis

$464

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Mon 11/9

6:00 am-5:41 pm

1 stop10h 41m

Toronto Pearson Intl

Tue 11/17

3:15 pm-10:15 pm

1 stop8h 00m

$354

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 11/4

6:00 am-5:41 pm

1 stop10h 41m

Toronto Pearson Intl

Wed 11/11

3:15 pm-11:59 pm

1 stop9h 44m

$354

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 10/28

6:44 pm-3:20 pm

2 stops19h 36m

Toronto Pearson Intl

Sat 10/31

6:30 am-11:16 pm

1 stop17h 46m

$359

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 10/28

6:44 pm-3:20 pm

2 stops19h 36m

Toronto Pearson Intl

Sun 11/1

4:20 pm-5:40 pm

2 stops26h 20m

$361

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Tue 10/27

9:40 am-6:45 pm

1 stop8h 05m

Toronto Pearson Intl

Thu 10/29

12:00 pm-9:40 pm

1 stop10h 40m

$530

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Mon 10/26

7:30 am-4:47 pm

1 stop8h 17m

Toronto Pearson Intl

Tue 10/27

8:20 am-3:43 pm

1 stop8h 23m

$530

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 10/28

6:21 am-6:29 pm

1 stop11h 08m

Toronto Pearson Intl

Fri 10/30

7:34 pm-10:38 am

1 stop16h 04m

$539

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Tue 10/27

6:21 am-11:15 pm

1 stop15h 54m

Toronto Pearson Intl

Fri 10/30

7:34 pm-10:38 am

1 stop16h 04m

$539

Quickest round-trip

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sat 10/31

4:05 pm-6:59 pm

Nonstop1h 54m

Toronto Pearson Intl

Mon 11/2

2:10 pm-3:23 pm

Nonstop2h 13m

$717

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Mon 10/26

4:05 pm-6:59 pm

Nonstop1h 54m

Toronto Pearson Intl

Fri 10/30

2:10 pm-3:23 pm

Nonstop2h 13m

$783

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from St. Louis to Toronto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between St. Louis and Toronto?

Prices are currently low for flights on this route.

Typical prices usually range from $578 to $706.
The lowest price recently found on this route was $354.

What is the cheapest month to fly to Toronto?

The month of December is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around $479. If you are unable to visit Toronto during the month of December, then departing from St. Louis during the month March is also very affordable. Most momondo users find prices during this month for around $482.

What is the cheapest day to depart on your flight to Toronto?

On average, the least expensive day to fly to Toronto from St. Louis is on a Friday. momondo users have found tickets for Friday departures for as low as $803. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Saturday, with ticket prices averaging around $980.

What is the cheapest time of day to depart on your flight to Toronto?

In the morning is the cheapest time of day to fly from St. Louis to Toronto when you can find flight prices for as low as $711. Flying to Toronto in the morning is an ideal time because this is during off-peak travel hours. Flights to Toronto are more costly at noon, with an average ticket price of $1,063. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Toronto flight route?

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto flight prices

What cabin class options are available on St. Louis to Toronto flights?

There are 4 cabin classes available to choose from on St. Louis to Toronto flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Toronto flights?

You could potentially save up to 43% on your flight if you consider stops on a St. Louis to Toronto flight.

How have St. Louis to Toronto flight prices changed over time?

As of September 2026, prices for St. Louis to Toronto flights are approximately 40% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Toronto

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Toronto according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Toronto (STL to YTO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto

Best Price Found	$133
Fastest flight time	1h 54m
Direct flights	Every day
Airports in Toronto	3 airports

The best one-way flight to Toronto from St. Louis in the past 72 hours is $133. The best round-trip flight deal from St. Louis to Toronto found on momondo in the last 72 hours is $354.

The fastest flight from St. Louis to Toronto takes 1h 54m

Direct flights go from St. Louis to Toronto every day.

There are 3 airports in Toronto. From St. Louis there are direct flights to Toronto Pearson Intl (YYZ).

Search flight deals

Frequently asked questions about flying from St. Louis to Toronto

How far is Lambert-St Louis to Toronto by plane?
The straight-line distance from Lambert-St Louis to Toronto is 659.9 mi. A reasonable flight in good conditions will take 1h 54m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto?
Prices for flights from Lambert-St Louis Airport to Toronto are updated daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto?
As of September 2026, there are 4 operators available to choose from for flights from Lambert-St Louis Airport to Toronto.
How old do you have to be to fly from Lambert-St Louis Airport to Toronto?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Toronto.
What documentation or ID do you need to fly to Toronto?
The required travel and health documents for your Toronto trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from St. Louis to Toronto?
Based on momondo bookings for flights between St. Louis and Toronto, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 50.31% of the total bookings. Other popular models include Embraer 175 with 28.30%, Boeing 787-8 Dreamliner with 5.66%, and Boeing 787-9 Dreamliner with 3.77%.
What is the most popular airline from St. Louis to Toronto?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Toronto is Air Canada, representing 62% of all bookings. The subsequent popular airlines are United Airlines at 19%, American Airlines at 12%, and Delta at 7%.

Best airlines flying from St. Louis to Toronto

Compare and see reviews for airlines that fly from St. Louis to Toronto with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $246	Free Cancellation	Rating 7.8 8,597 reviews	Search Delta flights
United Airlines	PriceFrom $253	Free Cancellation	Rating 7.4 10,233 reviews	Search United Airlines flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.0 12,075 reviews	Search American Airlines flights
Air Canada	PriceFrom $272	Free Cancellation	Rating 7.1 11,678 reviews	Search Air Canada flights

United Airlines Flights From St. Louis to Toronto
United Airlines flight deals from St. Louis to Toronto start from $253 round-trip. Over the 15 United Airlines flights for this route in a normal week, average airfare is usually $632 round-trip - but some users have found much cheaper deals with momondo.
Air Canada Flights From St. Louis to Toronto
Air Canada is also a popular choice for this route. Air Canada flight deals for St. Louis to Toronto start from as low as $272 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $604. Air Canada operates 14 flights to Toronto from St. Louis in an average week. Users have rated it 7.1/10 across 11,678 reviews.

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Toronto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Toronto from St. Louis.

Can I find flights from St. Louis to Toronto with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Toronto flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Toronto?

Once you have performed a search for St. Louis to Toronto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from St. Louis to Toronto right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Toronto flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Toronto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Complete your trip

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Fly into one of these airports located in Toronto

Toronto Region of Waterloo Intl Airport

Toronto Island Airport

Toronto Pearson Intl Airport

Cheap flights from St. Louis to Toronto from $133

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Toronto departing on 11/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from St. Louis to Toronto

Our best Delta deals on St. Louis to Toronto flight tickets

American Airlines flights from St. Louis to Toronto

Our best American Airlines deals on St. Louis to Toronto flight tickets

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See travel insights to Toronto from

How to get the cheapest flight ticket from St. Louis to Toronto

What is the typical price of a round-trip flight between St. Louis and Toronto?

What is the cheapest month to fly to Toronto?

What is the cheapest day to depart on your flight to Toronto?

What is the cheapest time of day to depart on your flight to Toronto?

What is the cheapest Lambert-St Louis to Toronto flight route?

What cabin class options are available on St. Louis to Toronto flights?

Can stopping save me money on St. Louis to Toronto flights?

How have St. Louis to Toronto flight prices changed over time?

What is the cheapest airline that flies from Lambert-St Louis to Toronto?

What airlines fly to Toronto?

Which airport is the most popular layover for flights between St. Louis and Toronto?

Which layover airport offers the lowest fares from St. Louis to Toronto?

Which layover airport has the shortest travel time from St. Louis to Toronto?

Which layover airport has the shortest connection time from St. Louis to Toronto?

How many flights depart from St. Louis to Toronto on average per day?

How many flights depart from St. Louis to Toronto on average per week?

When to book flights from St. Louis to Toronto

Cheap St. Louis to Toronto (STL to YTO) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Toronto

Frequently asked questions about flying from St. Louis to Toronto

Best airlines flying from St. Louis to Toronto

Compare and see reviews for airlines that fly from St. Louis to Toronto with momondo

Why use momondo?

An easier way to manage your Toronto trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Airports listed have a maximum distance of 52.0 mi from Toronto

Fly your favorite airline to Toronto

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Toronto

List of cabin classes available on flights landing in Toronto. Availability may vary depending on flight origin and airline.

Popular cities in Canada

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from St. Louis

According to popular flight searches on momondo this year

Complete your trip to Toronto

Explore popular destinations other users love

According to popular flight searches on momondo this year