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

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

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

The number of flights available between Toronto Pearson Intl Airport and St. Louis is 28 per week as of October 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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

As of October 2025, 4 flights take off from Toronto Pearson Intl Airport and land in St. Louis each day. The most common flight departure time for this route is 2:00PM, with 58% of daily flights taking off in the afternoon.

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

Prices for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport were last updated today.

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

As of October 2025, there are 2 operators available to choose from for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport.

How old do you have to be to fly from Toronto Pearson Intl Airport 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 Pearson Intl Airport to Lambert-St Louis Airport.

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

The required travel and health documents for your Lambert-St Louis Airport 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 Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$176 Cheap Flights from Toronto Pearson Intl Airport to St. Louis in 2025/26

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Cheap round-trip flights

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6:00 am - 3:02 pmYYZ-STL

10h 02m1 stop

6:00 am - 4:04 pmSTL-YYZ

9h 04m1 stop

$266American Airlines

Find Deal

Wed, Nov 12 - Wed, Nov 19

11:32 am - 8:23 pmYYZ-STL

9h 51m1 stop

6:00 am - 4:04 pmSTL-YYZ

9h 04m1 stop

$267American Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

1:30 pm - 1:57 pmYYZ-STL

25h 27m2 stops

2:12 pm - 12:11 amSTL-YYZ

8h 59m1 stop

$325Multiple Airlines

Find Deal

Thu, Nov 13 - Mon, Nov 17

7:55 pm - 9:07 amYYZ-STL

14h 12m2 stops

2:12 pm - 12:11 amSTL-YYZ

8h 59m1 stop

$346Multiple Airlines

Find Deal

Fri, Nov 14 - Mon, Nov 17

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

$362Air Canada

Find Deal

Thu, Nov 20 - Sun, Nov 23

2:00 pm - 3:29 pmYYZ-STL

2h 29mnonstop

4:05 pm - 7:06 pmSTL-YYZ

2h 01mnonstop

$363Air Canada

Find Deal

Thu, Nov 20 - Sun, Nov 23

12:45 pm - 9:40 pmYYZ-STL

9h 55m2 stops

6:30 am - 4:02 pmSTL-YYZ

8h 32m1 stop

$383United Airlines

Find Deal

Mon, Nov 10 - Wed, Nov 12

6:50 am - 12:28 pmYYZ-STL

6h 38m1 stop

8:00 am - 5:49 pmSTL-YYZ

8h 49m2 stops

$384United Airlines

Find Deal

Tue, Nov 25 - Fri, Nov 28

5:10 pm - 10:16 pmYYZ-STL

6h 06m1 stop

5:00 pm - 11:23 pmSTL-YYZ

5h 23m1 stop

$478Delta

Find Deal

Sat, Dec 20 - Fri, Jan 23

6:05 am - 5:09 pmYYZ-STL

12h 04m2 stops

6:00 am - 4:02 pmSTL-YYZ

9h 02m1 stop

$488Delta

Find Deal

Thu, Nov 20 - Sun, Nov 23

Air Canada flights from Toronto Pearson Intl Airport to St. Louis

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

Air Canada

Nov 20

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

Nov 23

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

$362

Find similar

Air Canada

Nov 20

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

Nov 23

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

$363

Find similar

Air Canada

Mar 3

YYZ2:00 pmToronto Pearson Intl

2h 29m

STL3:29 pmLambert-St Louis

Mar 4

STL4:05 pmLambert-St Louis

2h 01m

YYZ7:06 pmToronto Pearson Intl

$378

Find similar

American Airlines flights from Toronto Pearson Intl Airport to St. Louis

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

American Airlines

Nov 12

YYZ6:00 amToronto Pearson Intl

10h 02m

1 stop

STL3:02 pmLambert-St Louis

Nov 19

STL6:00 amLambert-St Louis

9h 04m

1 stop

YYZ4:04 pmToronto Pearson Intl

$266

Find similar

American Airlines

Nov 11

YYZ11:32 amToronto Pearson Intl

9h 51m

1 stop

STL8:23 pmLambert-St Louis

Nov 18

STL6:00 amLambert-St Louis

9h 04m

1 stop

YYZ4:04 pmToronto Pearson Intl

$267

Find similar

American Airlines

Nov 17

YYZ4:44 pmToronto Pearson Intl

8h 12m

1 stop

STL11:56 pmLambert-St Louis

Nov 20

STL5:00 amLambert-St Louis

9h 57m

1 stop

YYZ3:57 pmToronto Pearson Intl

$319

Find similar

momondo Fare Finder

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

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Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 11/12

6:00 am-3:02 pm

1 stop10h 02m

Lambert-St Louis

Wed 11/19

6:00 am-4:04 pm

1 stop9h 04m

$266

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 11/11

11:32 am-8:23 pm

1 stop9h 51m

Lambert-St Louis

Tue 11/18

6:00 am-4:04 pm

1 stop9h 04m

$267

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/13

1:30 pm-1:57 pm

2 stops25h 27m

Lambert-St Louis

Mon 11/17

2:12 pm-12:11 am

1 stop8h 59m

$325

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 11/14

7:55 pm-9:07 am

2 stops14h 12m

Lambert-St Louis

Mon 11/17

2:12 pm-12:11 am

1 stop8h 59m

$346

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/20

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Sun 11/23

4:05 pm-7:06 pm

Nonstop2h 01m

$362

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/20

2:00 pm-3:29 pm

Nonstop2h 29m

Lambert-St Louis

Sun 11/23

4:05 pm-7:06 pm

Nonstop2h 01m

$363

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 11/10

12:45 pm-9:40 pm

2 stops9h 55m

Lambert-St Louis

Wed 11/12

6:30 am-4:02 pm

1 stop8h 32m

$383

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 11/25

6:50 am-12:28 pm

1 stop6h 38m

Lambert-St Louis

Fri 11/28

8:00 am-5:49 pm

2 stops8h 49m

$384

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 12/20

5:10 pm-10:16 pm

1 stop6h 06m

Lambert-St Louis

Fri 1/23

5:00 pm-11:23 pm

1 stop5h 23m

$478

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 11/20

6:05 am-5:09 pm

2 stops12h 04m

Lambert-St Louis

Sun 11/23

6:00 am-4:02 pm

1 stop9h 02m

$488

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 Toronto Pearson Intl Airport 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 cheapest month to fly to St. Louis?

In general, May is the cheapest month to fly from Toronto Pearson Intl Airport to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $398. The month of June is another great option to travel to St. Louis, with average flight prices from Toronto Pearson Intl Airport averaging around $398.

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 Saturday when prices can be found for as low as $405. 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 Pearson Intl Airport 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 $479 per ticket.

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

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Toronto Pearson Intl - 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 Pearson Intl Airport 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 Pearson Intl Airport for as low as $360 on momondo.

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

There are 3 cabin classes available to choose from on Toronto Pearson Intl 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 Pearson Intl Airport to St. Louis flights?

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

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

As of October 2025, prices for Toronto Pearson Intl Airport to St. Louis flights are approximately 10% cheaper when compared to flights at the same time last year.

When to book flights from Toronto Pearson Intl Airport to St. Louis

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

Estimated round-trip price

Cheap Toronto Pearson Intl Airport to St. Louis (YYZ to STL) flight deals and tips

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

Fastest flight time	2h 03m
Direct flights	Every day
Airports in St. Louis	1 airport

The fastest flight from Toronto Pearson Intl Airport to St. Louis takes 2h 03m

Direct flights go from Toronto Pearson Intl Airport to St. Louis every day.

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

Search flight deals

How far is Toronto Pearson Intl to Lambert-St Louis by plane?
Lambert-St Louis is 650.6 mi away from Toronto Pearson Intl. 2h 29m is a normal flight duration for this route.
When did momondo last update prices for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport?
Prices for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport were last updated today.
How many operators does momondo search for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport?
As of October 2025, there are 2 operators available to choose from for flights from Toronto Pearson Intl Airport to Lambert-St Louis Airport.
How old do you have to be to fly from Toronto Pearson Intl Airport 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 Pearson Intl Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The required travel and health documents for your Lambert-St Louis Airport 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 Lambert-St Louis Airport. 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 Toronto Pearson Intl Airport to St. Louis?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Toronto Pearson Intl Airport to St. Louis is Canadair (Bombardier) Regional Jet 900 (69.87% of total bookings). The next most popular plane models are Embraer 175 (17.31%), Airbus A319 (3.85%), and Airbus A320-100/200 (3.85%).
What is the most popular airline from Toronto Pearson Intl Airport to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Toronto Pearson Intl Airport to St. Louis is Air Canada, representing 86% of all bookings. The subsequent popular airline is United Airlines at 14%.

Best airlines flying from Toronto Pearson Intl Airport to St. Louis

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

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom $324	Free Cancellation	Rating 7.1 10,306 reviews		Search Air Canada flights
United Airlines	PriceFrom $422	Free Cancellation	Rating 7.4 8,982 reviews		Search United Airlines flights

United Airlines Flights From Toronto Pearson Intl Airport to St. Louis
United Airlines operates around 14 flights from Toronto Pearson Intl Airport to St. Louis every week. The average price of these flights found in the last 72 hours has been $529, but momondo users have found United Airlines deals from Toronto Pearson Intl Airport to St. Louis from as low as $422 round-trip. United Airlines has been scored 7.4/10 in 8,982 reviews.
Air Canada Flights From Toronto Pearson Intl Airport to St. Louis
Air Canada (7.1/10 from 10,306 reviews) operates around 14 flights from Toronto Pearson Intl Airport to St. Louis in any given week. The average Air Canada airfare for this route is around $491, with deals from around $324 rare but found on momondo. Referenced prices are for round-trip Toronto Pearson Intl Airport to St. Louis flight searches in the last 72 hours.

St. Charles

Chesterfield

Hermann

Fairview Heights

Florissant

Maryland Heights

O'Fallon

Wentzville

Collinsville

Fenton

St. Peters

Alton

Farmington

Festus

Glencoe

Clayton

Edwardsville

Eureka

Litchfield

Shrewsbury

Why use momondo?

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

Finding the right flight to St. Louis from Toronto is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

All flight searches from Toronto to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Toronto to St. Louis 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 Toronto to St. Louis right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to St. Louis from Toronto. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when 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.

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Sat 11/22

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Cheap flights from Toronto Pearson Intl Airport to St. Louis from $176

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Air Canada flights from Toronto Pearson Intl Airport to St. Louis

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

American Airlines flights from Toronto Pearson Intl Airport to St. Louis

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

momondo Fare Finder

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

See travel insights to St. Louis from

How to get the cheapest flight ticket from Toronto Pearson Intl Airport 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 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 Pearson Intl to Lambert-St Louis flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Toronto Pearson Intl - 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 Pearson Intl to Lambert-St Louis flights?

There are 3 cabin classes available to choose from on Toronto Pearson Intl 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 Pearson Intl Airport to St. Louis flights?

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

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

As of October 2025, prices for Toronto Pearson Intl Airport to St. Louis flights are approximately 10% cheaper when compared to flights at the same time last year.

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

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

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

As of October 2025, 4 flights take off from Toronto Pearson Intl Airport and land in St. Louis each day. The most common flight departure time for this route is 2:00PM, with 58% of daily flights taking off in the afternoon.

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

The number of flights available between Toronto Pearson Intl Airport and St. Louis is 28 per week as of October 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

When to book flights from Toronto Pearson Intl Airport to St. Louis

Cheap Toronto Pearson Intl Airport to St. Louis (YYZ to STL) flight deals and tips

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

Fastest flight time

Direct flights

Airports in St. Louis

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

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

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

How old do you have to be to fly from Toronto Pearson Intl Airport 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 Pearson Intl Airport to St. Louis?

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

Best airlines flying from Toronto Pearson Intl Airport to St. Louis

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

United Airlines Flights From Toronto Pearson Intl Airport to St. Louis

Air Canada Flights From Toronto Pearson Intl Airport 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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