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 January 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 January 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 January 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.

$99 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 $408 to $674. The lowest price recently found on this route was $237.

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Find the cheapest flights from St. Louis to Toronto

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:42 pm - 2:16 pm

STL

YYZ

19h 34m

1 stop

8:20 pm - 11:11 am

YYZ

STL

15h 51m

1 stop

$237Multiple Airlines

Tue, Feb 3 - Fri, Feb 6

3:49 pm - 2:20 pm

STL

YYZ

21h 31m

1 stop

1:30 pm - 11:19 am

YYZ

STL

22h 49m

2 stops

$280Multiple Airlines

Tue, Mar 3 - Tue, Mar 17

10:11 pm - 7:36 pm

STL

YYZ

20h 25m

2 stops

7:10 am - 10:27 pm

YYZ

STL

16h 17m

1 stop

$281Multiple Airlines

Sun, Mar 1 - Tue, Mar 3

10:16 am - 12:14 am

STL

YYZ

12h 58m

1 stop

7:15 am - 11:33 pm

YYZ

STL

17h 18m

1 stop

$285Multiple Airlines

Mon, Feb 2 - Tue, Feb 3

3:49 pm - 2:20 pm

STL

YYZ

21h 31m

1 stop

8:20 pm - 7:37 am

YYZ

STL

12h 17m

1 stop

$288Multiple Airlines

Tue, Mar 3 - Tue, Mar 17

10:16 am - 12:14 am

STL

YYZ

12h 58m

1 stop

7:15 am - 11:33 pm

YYZ

STL

17h 18m

2 stops

$289Multiple Airlines

Mon, Feb 2 - Tue, Feb 3

5:42 pm - 8:11 pm

STL

YYZ

25h 29m

2 stops

8:20 pm - 11:11 am

YYZ

STL

15h 51m

1 stop

$294Multiple Airlines

Tue, Feb 3 - Fri, Feb 6

3:49 pm - 2:20 pm

STL

YYZ

21h 31m

1 stop

7:15 am - 11:19 pm

YYZ

STL

17h 04m

2 stops

$300Multiple Airlines

Tue, Mar 3 - Tue, Mar 17

3:49 pm - 2:20 pm

STL

YYZ

21h 31m

1 stop

8:30 pm - 10:37 am

YYZ

STL

15h 07m

2 stops

$309Multiple Airlines

Tue, Mar 3 - Tue, Mar 17

3:49 pm - 2:08 pm

STL

YYZ

21h 19m

1 stop

5:15 pm - 10:27 pm

YYZ

STL

30h 12m

1 stop

$314Multiple Airlines

Sun, Mar 1 - Tue, Mar 3

Alaska Airlines flights from St. Louis to Toronto

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

Alaska Airlines

Mar 6

STL7:00 amLambert-St Louis

31h 35m

1 stop

YYZ3:35 pmToronto Pearson Intl

Mar 8

YYZ4:45 pmToronto Pearson Intl

32h 14m

1 stop

STL11:59 pmLambert-St Louis

$459

Alaska Airlines

Apr 22

STL7:00 amLambert-St Louis

31h 45m

1 stop

YYZ3:45 pmToronto Pearson Intl

Apr 25

YYZ4:55 pmToronto Pearson Intl

32h 04m

1 stop

STL11:59 pmLambert-St Louis

$468

Alaska Airlines

Mar 6

STL7:00 amLambert-St Louis

31h 35m

1 stop

YYZ3:35 pmToronto Pearson Intl

Mar 8

YYZ4:45 pmToronto Pearson Intl

22h 06m

1 stop

STL1:51 pmLambert-St Louis

$485

WestJet flights from St. Louis to Toronto

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

WestJet

Jan 31

STL11:23 amLambert-St Louis

27h 27m

2 stops

YYZ3:50 pmToronto Pearson Intl

Feb 1

YYZ6:45 pmToronto Pearson Intl

22h 57m

1 stop

STL4:42 pmLambert-St Louis

$584

WestJet

Jan 31

STL3:31 pmLambert-St Louis

23h 19m

2 stops

YYZ3:50 pmToronto Pearson Intl

Feb 1

YYZ6:14 pmToronto Pearson Intl

6h 23m

1 stop

STL11:37 pmLambert-St Louis

$611

WestJet

Jan 31

STL7:25 amLambert-St Louis

12h 01m

1 stop

YYZ8:26 pmToronto Pearson Intl

Jan 31

YYZ10:50 pmToronto Pearson Intl

20h 00m

2 stops

STL5:50 pmLambert-St Louis

$639

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/3

5:42 pm-2:16 pm

1 stop19h 34m

Toronto Pearson Intl

Fri 2/6

8:20 pm-11:11 am

1 stop15h 51m

$237

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

3:49 pm-2:20 pm

1 stop21h 31m

Toronto Pearson Intl

Tue 3/17

1:30 pm-11:19 am

2 stops22h 49m

$280

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 3/1

10:11 pm-7:36 pm

2 stops20h 25m

Toronto Pearson Intl

Tue 3/3

7:10 am-10:27 pm

1 stop16h 17m

$281

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 2/2

10:16 am-12:14 am

1 stop12h 58m

Toronto Pearson Intl

Tue 2/3

7:15 am-11:33 pm

1 stop17h 18m

$285

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

3:49 pm-2:20 pm

1 stop21h 31m

Toronto Pearson Intl

Tue 3/17

8:20 pm-7:37 am

1 stop12h 17m

$288

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 2/2

10:16 am-12:14 am

1 stop12h 58m

Toronto Pearson Intl

Tue 2/3

7:15 am-11:33 pm

2 stops17h 18m

$289

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/3

5:42 pm-8:11 pm

2 stops25h 29m

Toronto Pearson Intl

Fri 2/6

8:20 pm-11:11 am

1 stop15h 51m

$294

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

3:49 pm-2:20 pm

1 stop21h 31m

Toronto Pearson Intl

Tue 3/17

7:15 am-11:19 pm

2 stops17h 04m

$300

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 3/3

3:49 pm-2:20 pm

1 stop21h 31m

Toronto Pearson Intl

Tue 3/17

8:30 pm-10:37 am

2 stops15h 07m

$309

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 3/1

3:49 pm-2:08 pm

1 stop21h 19m

Toronto Pearson Intl

Tue 3/3

5:15 pm-10:27 pm

1 stop30h 12m

$314

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 $363.

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 $801. 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 $984.

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 $872. 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 $1,150. 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 7% 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	$271
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 $271. The best round-trip flight deal from St. Louis to Toronto found on momondo in the last 72 hours is $648.

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 January 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 44.30% of the total bookings. Other popular models include Canadair (Bombardier) Regional Jet 900 with 8.86%, Airbus A330-300 with 7.59%, and Boeing 737 MAX 8 with 6.33%.
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 24%, American Airlines at 13%, 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 9,190 reviews	Search United Airlines flights
Air Canada	PriceFrom $214	Free Cancellation	Rating 7.1 10,644 reviews	Search Air Canada flights
American Airlines	PriceFrom $270	Free Cancellation	Rating 7.2 11,171 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 $397 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 $504. Air Canada operates 7 flights to Toronto from St. Louis in an average week. Users have rated it 7.1/10 across 10,644 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.