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

American Airlines, Air Canada, and United Airlines are the most popular carriers operating from Toronto to Lambert-St Louis

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

As of November 2025, there are 12 flights per week flying from Toronto to St. Louis. The most common day of the week flights depart is Tue, with 17% of flights taking off on this day.

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

1 flights are operational daily from Toronto to St. Louis as of November 2025. The most popular departure time for this route is 2:00PM, with 100% of flights per day taking off in the afternoon.

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

Prices for flights from Toronto to Lambert-St Louis Airport are refreshed on a daily basis.

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

There are 2 operators available for flights from Toronto to Lambert-St Louis Airport as of November 2025.

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

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 Toronto to Lambert-St Louis Airport.

What documentation or ID do you need to fly to Lambert-St Louis Airport?

The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$151 Cheap Flights from Toronto to St. Louis in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $445 to $580. The lowest price recently found on this route was $262.

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Cheap round-trip flights

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7:10 am - 7:50 amYYZ-STL

25h 40m1 stop

5:11 pm - 2:20 pmSTL-YYZ

20h 09m1 stop

$262Multiple Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

7:15 am - 7:50 amYYZ-STL

25h 35m2 stops

5:44 pm - 6:47 amSTL-YYZ

12h 03m1 stop

$288Multiple Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

6:00 am - 4:19 pmYYZ-STL

11h 19m1 stop

6:00 am - 4:39 pmSTL-YYZ

9h 39m2 stops

$302American Airlines

Find Deal

Sat, Dec 13 - Wed, Dec 24

6:00 am - 1:49 pmYYZ-STL

8h 49m1 stop

6:33 pm - 10:57 amSTL-YYZ

15h 24m1 stop

$305American Airlines

Find Deal

Tue, Feb 24 - Sat, Feb 28

6:00 am - 1:49 pmYYZ-STL

8h 49m1 stop

10:03 am - 9:29 pmSTL-YYZ

10h 26m1 stop

$313American Airlines

Find Deal

Tue, Feb 24 - Sat, Feb 28

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

$372Air Canada

Find Deal

Fri, Dec 26 - Wed, Dec 31

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

$373Air Canada

Find Deal

Wed, Dec 17 - Wed, Dec 24

6:10 am - 10:43 amYYZ-STL

5h 33m1 stop

5:34 pm - 11:21 pmSTL-YYZ

4h 47m1 stop

$391Delta

Find Deal

Thu, Nov 20 - Sun, Nov 23

7:30 am - 3:47 pmYYZ-STL

9h 17m2 stops

6:30 am - 2:14 pmSTL-YYZ

6h 44m2 stops

$392United Airlines

Find Deal

Tue, Nov 18 - Wed, Nov 19

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

8:05 am - 10:54 pmSTL-YYZ

13h 49m1 stop

$421United Airlines

Find Deal

Thu, Dec 18 - Thu, Dec 25

Delta flights from Toronto to St. Louis

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

Delta

Nov 20

YYZ6:10 amToronto Pearson Intl

5h 33m

1 stop

STL10:43 amLambert-St Louis

Nov 23

STL5:34 pmLambert-St Louis

4h 47m

1 stop

YYZ11:21 pmToronto Pearson Intl

$391

Find similar

Delta

Nov 18

YYZ6:10 amToronto Pearson Intl

5h 33m

1 stop

STL10:43 amLambert-St Louis

Nov 19

STL2:36 pmLambert-St Louis

7h 29m

1 stop

YYZ11:05 pmToronto Pearson Intl

$392

Find similar

Delta

Nov 15

YYZ12:08 pmToronto Pearson Intl

6h 15m

1 stop

STL5:23 pmLambert-St Louis

Nov 23

STL5:34 pmLambert-St Louis

4h 47m

1 stop

YYZ11:21 pmToronto Pearson Intl

$507

Find similar

American Airlines flights from Toronto to St. Louis

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

American Airlines

Dec 13

YYZ6:00 amToronto Pearson Intl

11h 19m

1 stop

STL4:19 pmLambert-St Louis

Dec 24

STL6:00 amLambert-St Louis

9h 39m

2 stops

YYZ4:39 pmToronto Pearson Intl

$302

Find similar

American Airlines

Feb 24

YYZ6:00 amToronto Pearson Intl

8h 49m

1 stop

STL1:49 pmLambert-St Louis

Feb 28

STL6:33 pmLambert-St Louis

15h 24m

1 stop

YYZ10:57 amToronto Pearson Intl

$305

Find similar

American Airlines

Feb 24

YYZ6:00 amToronto Pearson Intl

8h 49m

1 stop

STL1:49 pmLambert-St Louis

Feb 28

STL10:03 amLambert-St Louis

10h 26m

1 stop

YYZ9:29 pmToronto Pearson Intl

$313

Find similar

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/22

7:10 am-7:50 am

1 stop25h 40m

Lambert-St Louis

Sun 1/25

5:11 pm-2:20 pm

1 stop20h 09m

$262

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 1/22

7:15 am-7:50 am

2 stops25h 35m

Lambert-St Louis

Sun 1/25

5:44 pm-6:47 am

1 stop12h 03m

$288

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 12/13

6:00 am-4:19 pm

1 stop11h 19m

Lambert-St Louis

Wed 12/24

6:00 am-4:39 pm

2 stops9h 39m

$302

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 2/24

6:00 am-1:49 pm

1 stop8h 49m

Lambert-St Louis

Sat 2/28

6:33 pm-10:57 am

1 stop15h 24m

$305

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 2/24

6:00 am-1:49 pm

1 stop8h 49m

Lambert-St Louis

Sat 2/28

10:03 am-9:29 pm

1 stop10h 26m

$313

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 12/26

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Wed 12/31

4:05 pm-7:06 pm

Nonstop2h 01m

$372

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 12/17

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Wed 12/24

4:05 pm-7:06 pm

Nonstop2h 01m

$373

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/20

6:10 am-10:43 am

1 stop5h 33m

Lambert-St Louis

Sun 11/23

5:34 pm-11:21 pm

1 stop4h 47m

$391

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 11/18

7:30 am-3:47 pm

2 stops9h 17m

Lambert-St Louis

Wed 11/19

6:30 am-2:14 pm

2 stops6h 44m

$392

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 12/18

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Thu 12/25

8:05 am-10:54 pm

1 stop13h 49m

$421

Flights are sorted by cheapest round-trip flights first.

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

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 Toronto and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, June is the cheapest month to fly from Toronto to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $372. The month of August is another great option to travel to St. Louis, with average flight prices from Toronto averaging around $397.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $391. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $541. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Toronto in the morning is the least expensive time of day to depart. momondo users have found prices as low as $326 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $483 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $490 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Toronto for as low as $360 on momondo.

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

There are 3 cabin classes available to choose from on Toronto to Lambert-St Louis 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 Toronto to St. Louis flights?

You could potentially save up to 25% on your flight if you consider stops on a Toronto to St. Louis flight.

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

As of November 2025, prices for Toronto to St. Louis flights are approximately 25% more expensive when compared to flights at the same time last year.

When to book flights from Toronto to St. Louis

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

Estimated round-trip price

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

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

Best Price Found	$323
Fastest flight time	2h 14m
Direct flights	Every day
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Toronto in the past 72 hours is $323. The best round-trip flight deal from Toronto to St. Louis found on momondo in the last 72 hours is $476.

The fastest flight from Toronto to St. Louis takes 2h 14m

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

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

How far is Toronto to Lambert-St Louis by plane?
Lambert-St Louis is 659.9 mi away from Toronto. A reasonable flight in good conditions will take 2h 29m.
When did momondo last update prices for flights from Toronto to Lambert-St Louis Airport?
Prices for flights from Toronto to Lambert-St Louis Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Toronto to Lambert-St Louis Airport?
There are 2 operators available for flights from Toronto to Lambert-St Louis Airport as of November 2025.
How old do you have to be to fly from Toronto to Lambert-St Louis Airport?
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 Toronto to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Toronto to St. Louis?
Based on momondo bookings for flights between Toronto and St. Louis, the leading plane model is Canadair (Bombardier) Regional Jet 900, making up 58.90% of the total bookings. Other popular models include Embraer 175 with 27.40%, Airbus A319 with 4.11%, and Airbus A320-100/200 with 4.11%.
What is the most popular airline from Toronto to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Toronto to St. Louis is Air Canada, representing 74% of all bookings. The subsequent popular airline is United Airlines at 26%.

Best airlines flying from Toronto to St. Louis

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $324	Free Cancellation	Rating 7.1 10,403 reviews		Search Air Canada flights
United Airlines	PriceFrom $422	Free Cancellation	Rating 7.4 9,002 reviews		Search United Airlines flights

United Airlines Flights From Toronto to St. Louis
United Airlines flight deals from Toronto to St. Louis start from $422 round-trip. Over the 6 United Airlines flights for this route in a normal week, average airfare is usually $529 round-trip - but some users have found much cheaper deals with momondo.
Air Canada Flights From Toronto to St. Louis
$324 is the best Air Canada flight deal from Toronto to St. Louis found on momondo over the last 72 hours. The average Air Canada ticket price found was closer to $485, however, with flight time and availability significantly affecting the price. Air Canada (7.1/10 from 10,403 user reviews) flies into St. Louis from Toronto 6 times in an average week so prices can vary.

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Fenton

Collinsville

St. Peters

Alton

Farmington

Festus

Glencoe

Edwardsville

Clayton

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Toronto to St. Louis. momondo saves you time and could save you money on your trip.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Toronto with this policy.

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

Once all potential Toronto to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Toronto to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis trip

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Cheap flights from Toronto to St. Louis from $151

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto to St. Louis departing on 11/24. 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 Toronto to St. Louis

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

American Airlines flights from Toronto to St. Louis

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

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

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

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

What is the cheapest month to fly to St. Louis?

What is the cheapest day to depart on your flight to St. Louis?

What is the cheapest time of day to depart on your flight to St. Louis?

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

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

How far in advance should I book a flight to St. Louis?

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

There are 3 cabin classes available to choose from on Toronto to Lambert-St Louis 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 Toronto to St. Louis flights?

You could potentially save up to 25% on your flight if you consider stops on a Toronto to St. Louis flight.

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

As of November 2025, prices for Toronto to St. Louis flights are approximately 25% more expensive when compared to flights at the same time last year.

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

American Airlines, Air Canada, and United Airlines are the most popular carriers operating from Toronto to Lambert-St Louis

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

1 flights are operational daily from Toronto to St. Louis as of November 2025. The most popular departure time for this route is 2:00PM, with 100% of flights per day taking off in the afternoon.

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

As of November 2025, there are 12 flights per week flying from Toronto to St. Louis. The most common day of the week flights depart is Tue, with 17% of flights taking off on this day.

When to book flights from Toronto to St. Louis

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

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

Best Price Found

Fastest flight time

Direct flights

Airports in St. Louis

How far is Toronto to Lambert-St Louis by plane?

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

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

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

What documentation or ID do you need to fly to Lambert-St Louis Airport?

What is the most popular plane model from Toronto to St. Louis?

What is the most popular airline from Toronto to St. Louis?

Best airlines flying from Toronto to St. Louis

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

United Airlines Flights From Toronto to St. Louis

Air Canada Flights From Toronto to St. Louis

Traveling to a place near St. Louis?

Why use momondo?

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

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

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

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

An easier way to manage your St. Louis 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 the United States

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