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 66% of people opting to fly with this airline when traveling to Toronto. Keep in mind that there are 3 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 day?

The number of flights available between St. Louis and Toronto is 2 per day as of December 2025. The most frequent departure time is 4:00PM, with 100% of daily flights leaving in the afternoon.

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

As of December 2025, 14 flights take off from St. Louis and land in Toronto each week. The most common flight departure day for this route is Mon, with 14% of weekly flights taking off on this day.

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 December 2025, there are 3 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.

$101 Cheap Flights from St. Louis to Toronto in 2025/26

Q: 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 $296 to $664. The lowest price recently found on this route was $261.

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Find the cheapest flights from St. Louis to Toronto

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One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:11 pm - 12:11 am

STL

YYZ

30h 00m1 stop

3:40 pm - 6:51 am

YYZ

STL

16h 11m2 stops

$261Multiple Airlines

Sun, Jan 18 - Tue, Jan 20

6:41 pm - 6:20 am

STL

YYZ

10h 39m1 stop

8:20 pm - 12:27 am

YYZ

STL

29h 07m1 stop

$283Multiple Airlines

Sat, Feb 14 - Thu, Feb 19

5:42 pm - 11:46 am

STL

YYZ

17h 04m1 stop

7:10 am - 11:33 pm

YYZ

STL

17h 23m1 stop

$295Multiple Airlines

Sat, Jan 24 - Mon, Jan 26

1:59 pm - 6:43 am

STL

YYZ

15h 44m2 stops

7:10 am - 10:27 pm

YYZ

STL

16h 17m1 stop

$298Multiple Airlines

Fri, Feb 20 - Wed, Feb 25

5:42 pm - 11:46 am

STL

YYZ

17h 04m1 stop

7:15 am - 11:33 pm

YYZ

STL

17h 18m2 stops

$305Multiple Airlines

Sat, Jan 24 - Mon, Jan 26

10:11 pm - 1:40 pm

STL

YYZ

38h 29m2 stops

5:15 pm - 11:59 pm

YYZ

STL

7h 44m1 stop

$329Multiple Airlines

Fri, Feb 13 - Thu, Feb 19

8:32 pm - 11:20 pm

STL

YYZ

49h 48m2 stops

7:10 am - 11:33 pm

YYZ

STL

17h 23m1 stop

$331Multiple Airlines

Sat, Jan 17 - Sat, Jan 24

9:50 am - 9:09 pm

STL

YYZ

10h 19m2 stops

8:00 pm - 9:13 pm

YYZ

STL

26h 13m1 stop

$333Multiple Airlines

Thu, Feb 26 - Sun, Mar 1

5:11 pm - 2:16 pm

STL

YYZ

20h 05m1 stop

7:15 am - 11:33 pm

YYZ

STL

17h 18m1 stop

$336Multiple Airlines

Sun, Jan 18 - Tue, Jan 20

3:49 pm - 2:20 pm

STL

YYZ

21h 31m1 stop

8:20 pm - 12:27 am

YYZ

STL

29h 07m1 stop

$348Multiple Airlines

Fri, Feb 13 - Thu, Feb 19

American Airlines flights from St. Louis to Toronto

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

American Airlines

Feb 14

STL6:35 pmLambert-St Louis

15h 21m

1 stop

YYZ10:56 amToronto Pearson Intl

Feb 21

YYZ11:38 amToronto Pearson Intl

7h 24m

1 stop

STL6:02 pmLambert-St Louis

$355

Find similar

American Airlines

Feb 14

STL10:04 amLambert-St Louis

10h 25m

1 stop

YYZ9:29 pmToronto Pearson Intl

Feb 21

YYZ11:38 amToronto Pearson Intl

7h 24m

1 stop

STL6:02 pmLambert-St Louis

$366

Find similar

American Airlines

Feb 5

STL6:00 amLambert-St Louis

11h 20m

1 stop

YYZ6:20 pmToronto Pearson Intl

Feb 12

YYZ4:43 pmToronto Pearson Intl

7h 45m

1 stop

STL11:28 pmLambert-St Louis

$427

Find similar

Air Canada flights from St. Louis to Toronto

Our best Air Canada deals on St. Louis to Toronto flight tickets

Air Canada

Feb 14

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

Feb 21

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

$480

Find similar

Air Canada

Mar 25

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

Apr 1

YYZ2:10 pmToronto Pearson Intl

2h 14m

STL3:24 pmLambert-St Louis

$522

Find similar

Air Canada

Feb 8

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

Feb 15

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

$524

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 1/18

5:11 pm-12:11 am

1 stop30h 00m

Toronto Pearson Intl

Tue 1/20

3:40 pm-6:51 am

2 stops16h 11m

$261

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 2/14

6:41 pm-6:20 am

1 stop10h 39m

Toronto Pearson Intl

Thu 2/19

8:20 pm-12:27 am

1 stop29h 07m

$283

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 1/24

5:42 pm-11:46 am

1 stop17h 04m

Toronto Pearson Intl

Mon 1/26

7:10 am-11:33 pm

1 stop17h 23m

$295

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 2/20

1:59 pm-6:43 am

2 stops15h 44m

Toronto Pearson Intl

Wed 2/25

7:10 am-10:27 pm

1 stop16h 17m

$298

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 1/24

5:42 pm-11:46 am

1 stop17h 04m

Toronto Pearson Intl

Mon 1/26

7:15 am-11:33 pm

2 stops17h 18m

$305

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 2/13

10:11 pm-1:40 pm

2 stops38h 29m

Toronto Pearson Intl

Thu 2/19

5:15 pm-11:59 pm

1 stop7h 44m

$329

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 1/17

8:32 pm-11:20 pm

2 stops49h 48m

Toronto Pearson Intl

Sat 1/24

7:10 am-11:33 pm

1 stop17h 23m

$331

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 2/26

9:50 am-9:09 pm

2 stops10h 19m

Toronto Pearson Intl

Sun 3/1

8:00 pm-9:13 pm

1 stop26h 13m

$333

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 1/18

5:11 pm-2:16 pm

1 stop20h 05m

Toronto Pearson Intl

Tue 1/20

7:15 am-11:33 pm

1 stop17h 18m

$336

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Fri 2/13

3:49 pm-2:20 pm

1 stop21h 31m

Toronto Pearson Intl

Thu 2/19

8:20 pm-12:27 am

1 stop29h 07m

$348

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

Other information

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

What is the cheapest month to fly to Toronto?

The month of April is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around $314. If you are unable to visit Toronto during the month of April, then departing from St. Louis during the month June is also very affordable. Most momondo users find prices during this month for around $392.

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 Tuesday. momondo users have found tickets for Tuesday departures for as low as $813. However, this price may fluctuate depending on the airline, the season, and holidays. The most expensive day to fly to Toronto is Friday, with ticket prices averaging around $982.

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

In the afternoon is the cheapest time of day to fly from St. Louis to Toronto when you can find flight prices for as low as $887. Flying to Toronto in the afternoon 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 $1,183. 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

How far in advance should I book a flight to Toronto?

You are more likely to see cheaper flights to Toronto from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around $508 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from St. Louis for as low as $221 on momondo.

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

There are 4 cabin classes available to choose from on Lambert-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?

No. A direct flight is the cheapest option for a flight between St. Louis to Toronto.

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

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	$307
Fastest flight time	1h 51m
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 $307. The best round-trip flight deal from St. Louis to Toronto found on momondo in the last 72 hours is $646.

The fastest flight from St. Louis to Toronto takes 1h 51m

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

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 51m.
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 December 2025, there are 3 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 Embraer 175, making up 47.78% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 900 with 13.33%, Airbus A330-300 with 6.67%, and Boeing 737 MAX 8 with 4.44%.
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 54% of all bookings. The subsequent popular airlines are United Airlines at 25%, American Airlines at 12%, and Delta at 9%.

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
United Airlines	PriceFrom $199	Free Cancellation	Rating 7.4 9,106 reviews	Search United Airlines flights
Air Canada	PriceFrom $221	Free Cancellation	Rating 7.1 10,551 reviews	Search Air Canada flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,050 reviews	Search American Airlines flights

United Airlines Flights From St. Louis to Toronto
United Airlines flight deals from St. Louis to Toronto start from $199 round-trip. Over the 7 United Airlines flights for this route in a normal week, average airfare is usually $489 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 $221 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $535. Air Canada operates 7 flights to Toronto from St. Louis in an average week. Users have rated it 7.1/10 across 10,551 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.