Which layover airport has the shortest travel time from Toronto to St. Louis?

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 4h 09m.

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

As of June 2026, 3 flights take off from Toronto and land in St. Louis each day. The most common flight departure time for this route is 7:00p.m., with 53% of daily flights taking off in the evening.

Which airport is the most popular layover for flights between Toronto and St. Louis?

Chicago (ORD) was the most common stop: 80% of momondo users choosing one-stop flights on this route connected there.

Which layover airport offers the lowest fares from Toronto to St. Louis?

Flights via Chicago (ORD) offer the lowest average round-trip price of C$ 493.

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

American Airlines is the most popular carrier operating from Toronto to Lambert-St Louis

Which layover airport has the shortest connection time from Toronto to St. Louis?

Chicago (ORD) has the shortest average layover time for this route: 0h 53m.

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

As of June 2026, there are 24 flights per week flying from Toronto to St. Louis. The most common day of the week flights depart is Mon, with 17% of flights taking off on this day.

Which airlines fly to St. Louis?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to St. Louis from Toronto according to our data. Air Canada is the first choice among our users, with 71% of people opting to fly with this airline when travelling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

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?

As of June 2026, there are 4 operators available to choose from 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?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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.

C$ 267 Cheap Flights from Toronto to St. Louis in 2026

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 C$ 765 to C$ 629. The lowest price recently found on this route was C$ 436.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Toronto to St. Louis

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:30 a.m. - 1:16 p.m.

YYZ

STL

7h 46m

1 stop

7:27 a.m. - 5:44 p.m.

STL

YYZ

9h 17m

1 stop

C$ 436American Airlines

Wed, 9 Sep - Tue, 22 Sep

7:17 a.m. - 1:53 p.m.

YYZ

STL

7h 36m

1 stop

6:55 a.m. - 5:34 p.m.

STL

YYZ

9h 39m

1 stop

C$ 453American Airlines

Wed, 15 Jul - Wed, 22 Jul

7:17 a.m. - 1:53 p.m.

YYZ

STL

7h 36m

1 stop

6:55 a.m. - 5:34 p.m.

STL

YYZ

9h 39m

1 stop

C$ 468American Airlines

Wed, 8 Jul - Wed, 15 Jul

7:17 a.m. - 4:40 p.m.

YYZ

STL

10h 23m

1 stop

6:00 a.m. - 2:33 p.m.

STL

YYZ

7h 33m

1 stop

C$ 473American Airlines

Wed, 29 Jul - Wed, 5 Aug

1:17 p.m. - 12:16 a.m.

YYZ

STL

11h 59m

1 stop

6:55 a.m. - 12:36 p.m.

STL

YYZ

4h 41m

1 stop

C$ 571American Airlines

Tue, 7 Jul - Sun, 19 Jul

7:17 a.m. - 1:53 p.m.

YYZ

STL

7h 36m

1 stop

5:48 p.m. - 11:50 p.m.

STL

YYZ

5h 02m

1 stop

C$ 579American Airlines

Wed, 22 Jul - Mon, 27 Jul

2:50 p.m. - 6:15 p.m.

YYZ

STL

28h 25m

2 stops

7:03 p.m. - 6:39 a.m.

STL

YYZ

10h 36m

1 stop

C$ 585Multiple Airlines

Thu, 16 Jul - Tue, 21 Jul

10:50 a.m. - 6:05 p.m.

YYZ

STL

32h 15m

2 stops

7:10 p.m. - 5:09 p.m.

STL

YYZ

20h 59m

1 stop

C$ 586Multiple Airlines

Mon, 3 Aug - Mon, 10 Aug

3:50 p.m. - 6:15 p.m.

YYZ

STL

27h 25m

2 stops

7:03 p.m. - 6:39 a.m.

STL

YYZ

10h 36m

1 stop

C$ 587Multiple Airlines

Wed, 15 Jul - Wed, 22 Jul

10:50 a.m. - 6:05 p.m.

YYZ

STL

32h 15m

2 stops

7:03 p.m. - 6:39 a.m.

STL

YYZ

10h 36m

1 stop

C$ 589Multiple Airlines

Tue, 14 Jul - Tue, 21 Jul

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American Airlines flights from Toronto to St. Louis

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

American Airlines

9 Sep

YYZ6:30 a.m.Toronto Pearson Intl

7h 46m

1 stop

STL1:16 p.m.Lambert-St Louis

22 Sep

STL7:27 a.m.Lambert-St Louis

9h 17m

1 stop

YYZ5:44 p.m.Toronto Pearson Intl

C$ 436

American Airlines

15 Jul

YYZ7:17 a.m.Toronto Pearson Intl

7h 36m

1 stop

STL1:53 p.m.Lambert-St Louis

22 Jul

STL6:55 a.m.Lambert-St Louis

9h 39m

1 stop

YYZ5:34 p.m.Toronto Pearson Intl

C$ 453

American Airlines

8 Jul

YYZ7:17 a.m.Toronto Pearson Intl

7h 36m

1 stop

STL1:53 p.m.Lambert-St Louis

15 Jul

STL6:55 a.m.Lambert-St Louis

9h 39m

1 stop

YYZ5:34 p.m.Toronto Pearson Intl

C$ 468

Air Canada flights from Toronto to St. Louis

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

Air Canada

9 Sep

YYZ6:55 p.m.Toronto Pearson Intl

2h 05m

STL8:00 p.m.Lambert-St Louis

22 Sep

STL2:40 p.m.Lambert-St Louis

1h 54m

YYZ5:34 p.m.Toronto Pearson Intl

C$ 626

Air Canada

26 Jun

YYZ11:15 a.m.Toronto Pearson Intl

2h 06m

STL12:21 p.m.Lambert-St Louis

28 Jun

STL2:15 p.m.Lambert-St Louis

1h 51m

YYZ5:06 p.m.Toronto Pearson Intl

C$ 632

Air Canada

26 Jun

YYZ11:15 a.m.Toronto Pearson Intl

2h 06m

STL12:21 p.m.Lambert-St Louis

28 Jun

STL1:20 p.m.Lambert-St Louis

7h 35m

1 stop

YYZ9:55 p.m.Toronto Pearson Intl

C$ 636

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 9/9

6:30 a.m.-1:16 p.m.

1 stop7h 46m

Lambert-St Louis

Tue 22/9

7:27 a.m.-5:44 p.m.

1 stop9h 17m

C$ 436

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 15/7

7:17 a.m.-1:53 p.m.

1 stop7h 36m

Lambert-St Louis

Wed 22/7

6:55 a.m.-5:34 p.m.

1 stop9h 39m

C$ 453

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 8/7

7:17 a.m.-1:53 p.m.

1 stop7h 36m

Lambert-St Louis

Wed 15/7

6:55 a.m.-5:34 p.m.

1 stop9h 39m

C$ 468

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 29/7

7:17 a.m.-4:40 p.m.

1 stop10h 23m

Lambert-St Louis

Wed 5/8

6:00 a.m.-2:33 p.m.

1 stop7h 33m

C$ 473

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 7/7

1:17 p.m.-12:16 a.m.

1 stop11h 59m

Lambert-St Louis

Sun 19/7

6:55 a.m.-12:36 p.m.

1 stop4h 41m

C$ 571

Quickest round-trip

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 22/7

7:17 a.m.-1:53 p.m.

1 stop7h 36m

Lambert-St Louis

Mon 27/7

5:48 p.m.-11:50 p.m.

1 stop5h 02m

C$ 579

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 16/7

2:50 p.m.-6:15 p.m.

2 stops28h 25m

Lambert-St Louis

Tue 21/7

7:03 p.m.-6:39 a.m.

1 stop10h 36m

C$ 585

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 3/8

10:50 a.m.-6:05 p.m.

2 stops32h 15m

Lambert-St Louis

Mon 10/8

7:10 p.m.-5:09 p.m.

1 stop20h 59m

C$ 586

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 15/7

3:50 p.m.-6:15 p.m.

2 stops27h 25m

Lambert-St Louis

Wed 22/7

7:03 p.m.-6:39 a.m.

1 stop10h 36m

C$ 587

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 14/7

10:50 a.m.-6:05 p.m.

2 stops32h 15m

Lambert-St Louis

Tue 21/7

7:03 p.m.-6:39 a.m.

1 stop10h 36m

C$ 589

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 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

Layovers

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?

The month of December is, on average, the cheapest month to fly to St. Louis from Toronto, with most prices found around C$ 235. If you don’t want to visit St. Louis in December, then you should wait until October to fly from Toronto, when ticket prices are also cheap, with an average price of C$ 245.

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

Our data shows that Saturday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 592. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 897.

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

The cheapest time of day to fly to St. Louis is at noon when flights can be purchased for as low as C$ 638. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 844 on average. Flights to St. Louis from Toronto in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 from Toronto 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 C$ 719 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 C$ 502 on momondo.

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

There is only 1 cabin class available to choose from on Toronto to 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?

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

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

As of June 2026, prices for Toronto to St. Louis flights are approximately 2% 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	C$ 378
Fastest flight time	2h 06m
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 C$ 378. The best round-trip flight deal from Toronto to St. Louis found on momondo in the last 72 hours is C$ 588.

The fastest flight from Toronto to St. Louis takes 2h 06m

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

There is 1 airport in St. Louis. From Toronto there are direct flights to Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Toronto to St. Louis

How far is Toronto to Lambert-St Louis by plane?
Toronto and Lambert-St Louis are 1062.1 km apart from one another. By plane, this route typically takes 2h 06m.
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?
As of June 2026, there are 4 operators available to choose from 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?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 33.59% of the total bookings. Other popular models include Embraer 175 with 27.48%, Airbus A220-300 with 25.95%, and Airbus A319 with 4.58%.
What is the most popular airline from Toronto to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Toronto to St. Louis is Air Canada (87% of total bookings). The next most popular airline is United Airlines (13%).

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
United Airlines	PriceFrom C$ 342	Free Cancellation	Rating 7.4 9,830 reviews	Search United Airlines flights
American Airlines	PriceFrom C$ 369	Free Cancellation	Rating 7.1 11,660 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 446	Free Cancellation	Rating 7.1 11,194 reviews	Search Air Canada flights
WestJet	PriceFrom C$ 636	Free Cancellation	Rating 7.2 3,362 reviews	Search WestJet flights

United Airlines Flights From Toronto to St. Louis
Across 12 United Airlines flights from Toronto to St. Louis this week, the average price was C$ 640, with the best United Airlines deals starting from C$ 342 round-trip. 9,830 users have rated United Airlines on momondo, with an average score of 7.4/10.
Air Canada Flights From Toronto to St. Louis
Another popular option for Toronto to St. Louis flights is Air Canada (7.1/10, 11,194 ratings). Air Canada flies from Toronto to St. Louis around 12 times per week, with deals starting from C$ 446 round-trip and rising to an average price of around C$ 643.

Why use momondo?

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

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 St. Louis from Toronto.

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

Yes. momondo allows you to filter the results for Toronto to St. Louis flights to just show those with 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?

Price alerts on flights to St. Louis from Toronto are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your St. Louis trip

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Cheap flights from Toronto to St. Louis from C$ 267

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 8/7. 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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American Airlines flights from Toronto to St. Louis

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

Air Canada flights from Toronto to St. Louis

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

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See travel insights to St. Louis from

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

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?

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

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

Can stopping save me money on Toronto to St. Louis flights?

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

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

Which airlines fly to St. Louis?

Which airport is the most popular layover for flights between Toronto and St. Louis?

Which layover airport offers the lowest fares from Toronto to St. Louis?

Which layover airport has the shortest travel time from Toronto to St. Louis?

Which layover airport has the shortest connection time from Toronto to St. Louis?

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

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

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

Frequently asked questions about flying 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

Why use momondo?

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

Airports servicing Missouri

Fly your favourite airline to St. Louis

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