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 February 2026. 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 February 2026, 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 February 2026, 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.

$135 Cheap Flights from St. Louis to Toronto in 2026

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 $314 to $493. The lowest price recently found on this route was $297.

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from St. Louis to Toronto

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:51 pm - 11:26 am

STL

YYZ

17h 35m

1 stop

3:40 pm - 10:37 am

YYZ

STL

19h 57m

2 stops

$297Multiple Airlines

вт, бер. 10 - вт, бер. 17

3:49 pm - 12:14 am

STL

YYZ

7h 25m

1 stop

8:00 pm - 11:19 am

YYZ

STL

16h 19m

1 stop

$298Multiple Airlines

вт, бер. 3 - пт, бер. 6

3:49 pm - 12:14 am

STL

YYZ

7h 25m

1 stop

8:00 pm - 11:19 am

YYZ

STL

16h 19m

1 stop

$310Multiple Airlines

вт, бер. 3 - пт, бер. 6

11:21 am - 2:20 pm

STL

YYZ

25h 59m

2 stops

7:55 pm - 11:19 am

YYZ

STL

16h 24m

1 stop

$311Multiple Airlines

чт, бер. 26 - пн, бер. 30

3:49 pm - 12:14 am

STL

YYZ

7h 25m

1 stop

8:00 pm - 9:49 am

YYZ

STL

14h 49m

2 stops

$312Multiple Airlines

вт, бер. 3 - пт, бер. 6

8:06 pm - 7:55 pm

STL

YYZ

22h 49m

1 stop

3:40 pm - 10:37 am

YYZ

STL

19h 57m

2 stops

$315Multiple Airlines

нд, бер. 15 - вт, бер. 17

11:27 am - 12:14 am

STL

YYZ

35h 47m

2 stops

7:55 pm - 11:19 am

YYZ

STL

16h 24m

1 stop

$324Multiple Airlines

вт, бер. 24 - пн, бер. 30

12:14 pm - 7:36 pm

STL

YYZ

30h 22m

2 stops

7:55 pm - 11:19 am

YYZ

STL

16h 24m

1 stop

$325Multiple Airlines

ср, бер. 25 - пн, бер. 30

8:00 am - 5:36 pm

STL

YYZ

8h 36m

1 stop

11:40 am - 11:44 pm

YYZ

STL

13h 04m

1 stop

$326American Airlines

вт, бер. 10 - вт, бер. 17

12:05 pm - 9:29 pm

STL

YYZ

8h 24m

1 stop

1:10 pm - 9:11 pm

YYZ

STL

9h 01m

1 stop

$327American Airlines

ср, квіт. 1 - сб, квіт. 4

Delta flights from St. Louis to Toronto

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

Delta

Feb 18

STL10:14 amLambert-St Louis

11h 37m

2 stops

YYZ10:51 pmToronto Pearson Intl

Feb 21

YYZ6:05 amToronto Pearson Intl

11h 37m

2 stops

STL4:42 pmLambert-St Louis

$727

Delta

Feb 18

STL10:14 amLambert-St Louis

11h 37m

2 stops

YYZ10:51 pmToronto Pearson Intl

Feb 21

YYZ12:20 pmToronto Pearson Intl

4h 36m

1 stop

STL3:56 pmLambert-St Louis

$749

Delta

Feb 18

STL10:14 amLambert-St Louis

11h 37m

2 stops

YYZ10:51 pmToronto Pearson Intl

Feb 21

YYZ6:05 amToronto Pearson Intl

11h 37m

2 stops

STL4:42 pmLambert-St Louis

$782

Air New Zealand flights from St. Louis to Toronto

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

Air New Zealand

Feb 18

STL8:17 amLambert-St Louis

4h 44m

1 stop

YYZ2:01 pmToronto Pearson Intl

Feb 21

YYZ5:30 pmToronto Pearson Intl

4h 35m

1 stop

STL9:05 pmLambert-St Louis

$614

Air New Zealand

Feb 15

STL8:17 amLambert-St Louis

6h 45m

1 stop

YYZ4:02 pmToronto Pearson Intl

Feb 18

YYZ5:30 pmToronto Pearson Intl

4h 35m

1 stop

STL9:05 pmLambert-St Louis

$684

Air New Zealand

Feb 14

STL11:25 amLambert-St Louis

8h 56m

1 stop

YYZ9:21 pmToronto Pearson Intl

Feb 21

YYZ8:45 amToronto Pearson Intl

4h 36m

1 stop

STL12:21 pmLambert-St Louis

$724

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/10

4:51 pm-11:26 am

1 stop17h 35m

Toronto Pearson Intl

вт 3/17

3:40 pm-10:37 am

2 stops19h 57m

$297

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/3

3:49 pm-12:14 am

1 stop7h 25m

Toronto Pearson Intl

пт 3/6

8:00 pm-11:19 am

1 stop16h 19m

$298

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/3

3:49 pm-12:14 am

1 stop7h 25m

Toronto Pearson Intl

пт 3/6

8:00 pm-11:19 am

1 stop16h 19m

$310

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

чт 3/26

11:21 am-2:20 pm

2 stops25h 59m

Toronto Pearson Intl

пн 3/30

7:55 pm-11:19 am

1 stop16h 24m

$311

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/3

3:49 pm-12:14 am

1 stop7h 25m

Toronto Pearson Intl

пт 3/6

8:00 pm-9:49 am

2 stops14h 49m

$312

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

нд 3/15

8:06 pm-7:55 pm

1 stop22h 49m

Toronto Pearson Intl

вт 3/17

3:40 pm-10:37 am

2 stops19h 57m

$315

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/24

11:27 am-12:14 am

2 stops35h 47m

Toronto Pearson Intl

пн 3/30

7:55 pm-11:19 am

1 stop16h 24m

$324

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

ср 3/25

12:14 pm-7:36 pm

2 stops30h 22m

Toronto Pearson Intl

пн 3/30

7:55 pm-11:19 am

1 stop16h 24m

$325

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

вт 3/10

8:00 am-5:36 pm

1 stop8h 36m

Toronto Pearson Intl

вт 3/17

11:40 am-11:44 pm

1 stop13h 04m

$326

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

ср 4/1

12:05 pm-9:29 pm

1 stop8h 24m

Toronto Pearson Intl

сб 4/4

1:10 pm-9:11 pm

1 stop9h 01m

$327

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 June is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around $334. If you are unable to visit Toronto during the month of June, then departing from St. Louis during the month April is also very affordable. Most momondo users find prices during this month for around $444.

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 $787. 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 $953.

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 $858. 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 $1,076. 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 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?

You could potentially save up to 28% 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?

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	$309
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 $309. The best round-trip flight deal from St. Louis to Toronto found on momondo in the last 72 hours is $651.

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 February 2026, 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 39.29% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 900 with 13.10%, Boeing 737 MAX 8 with 8.33%, and Airbus A330-300 with 7.14%.
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 53% of all bookings. The subsequent popular airlines are United Airlines at 24%, American Airlines at 12%, and Delta at 10%.

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 9,279 reviews	Search United Airlines flights
Air Canada	PriceFrom $214	Free Cancellation	Rating 7.1 10,709 reviews	Search Air Canada flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,271 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 $389 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 $214 round-trip, depending on your selected dates, with average Air Canada deals seen on momondo around $493. Air Canada operates 7 flights to Toronto from St. Louis in an average week. Users have rated it 7.1/10 across 10,709 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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

сб 3/14

сб 3/21

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada

Nearby airports

Airlines

Cabin classes

Other Canada destinations

Other flights from St. Louis

Complete your trip

Feeling lucky

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 $135

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 4/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Delta flights from St. Louis to Toronto

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

Air New Zealand flights from St. Louis to Toronto

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

momondo Fare Finder

Use the filters below to find and compare flights from St. Louis to Toronto that are best for you.

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 Lambert-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 airlines fly 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

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

Best Price Found

Fastest flight time

Direct flights

Airports in Toronto

Best airlines flying from St. Louis to Toronto

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

United Airlines Flights From St. Louis to Toronto

Air Canada Flights From St. Louis to Toronto

Why use momondo?

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

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

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

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

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