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Cheap flights from Toronto to St. Louis from C$ 186

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 15/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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Find the cheapest flights from Toronto to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.
STL
-
YYZ
20h 09m1 stop
C$ 296Multiple Airlines
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
7:15 a.m. - 11:33 p.m.
YYZ
-
STL
17h 18m1 stop
Multiple Airlines Logo
8:59 a.m. - 2:20 p.m.
STL
-
YYZ
28h 21m1 stop
C$ 304Multiple Airlines
Tue, 3 Feb - Sun, 8 Feb
Multiple Airlines Logo
3:40 p.m. - 6:51 a.m.
YYZ
-
STL
16h 11m2 stops
Multiple Airlines Logo
8:59 a.m. - 2:20 p.m.
STL
-
YYZ
28h 21m1 stop
C$ 319Multiple Airlines
Tue, 3 Feb - Sun, 8 Feb
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
Multiple Airlines Logo
10:09 p.m. - 9:11 p.m.
STL
-
YYZ
22h 02m2 stops
C$ 339Multiple Airlines
Thu, 15 Jan - Sun, 18 Jan
Multiple Airlines Logo
8:00 p.m. - 12:12 p.m.
YYZ
-
STL
17h 12m1 stop
Multiple Airlines Logo
12:37 p.m. - 7:00 a.m.
STL
-
YYZ
17h 23m2 stops
C$ 347Multiple Airlines
Thu, 8 Jan - Sun, 11 Jan
Multiple Airlines Logo
8:00 p.m. - 12:12 p.m.
YYZ
-
STL
17h 12m1 stop
Multiple Airlines Logo
12:37 p.m. - 6:47 a.m.
STL
-
YYZ
17h 10m1 stop
C$ 354Multiple Airlines
Thu, 8 Jan - Sun, 11 Jan
Multiple Airlines Logo
5:15 p.m. - 10:33 p.m.
YYZ
-
STL
30h 18m1 stop
Multiple Airlines Logo
5:11 p.m. - 8:11 p.m.
STL
-
YYZ
26h 00m2 stops
C$ 370Multiple Airlines
Mon, 5 Jan - Mon, 12 Jan
Multiple Airlines Logo
5:15 p.m. - 10:33 p.m.
YYZ
-
STL
30h 18m1 stop
Multiple Airlines Logo
1:07 p.m. - 6:20 a.m.
STL
-
YYZ
16h 13m1 stop
C$ 374Multiple Airlines
Mon, 5 Jan - Mon, 12 Jan
Multiple Airlines Logo
12:30 p.m. - 12:12 p.m.
YYZ
-
STL
24h 42m2 stops
Multiple Airlines Logo
12:37 p.m. - 6:20 a.m.
STL
-
YYZ
16h 43m1 stop
C$ 377Multiple Airlines
Wed, 7 Jan - Sun, 11 Jan
Multiple Airlines Logo
7:10 a.m. - 8:05 a.m.
YYZ
-
STL
25h 55m1 stop
Multiple Airlines Logo
3:43 p.m. - 6:20 a.m.
STL
-
YYZ
37h 37m2 stops
C$ 380Multiple Airlines
Sun, 11 Jan - Sat, 17 Jan

United Airlines flights from Toronto to St. Louis

Our best United Airlines deals on Toronto to St. Louis flight tickets
United Airlines
8 Jan
YYZ11:00 a.m.Toronto Pearson Intl
4h 30m
1 stop
STL2:30 p.m.Lambert-St Louis
12 Jan
STL4:49 p.m.Lambert-St Louis
6h 10m
1 stop
YYZ11:59 p.m.Toronto Pearson Intl
C$ 547
Find similar
United Airlines
13 Feb
YYZ5:30 p.m.Toronto Pearson Intl
6h 29m
1 stop
STL10:59 p.m.Lambert-St Louis
15 Feb
STL6:25 a.m.Lambert-St Louis
6h 49m
2 stops
YYZ2:14 p.m.Toronto Pearson Intl
C$ 548
Find similar
United Airlines
7 Jan
YYZ9:00 a.m.Toronto Pearson Intl
6h 30m
1 stop
STL2:30 p.m.Lambert-St Louis
11 Jan
STL6:40 p.m.Lambert-St Louis
4h 19m
1 stop
YYZ11:59 p.m.Toronto Pearson Intl
C$ 551
Find similar

American Airlines flights from Toronto to St. Louis

Our best American Airlines deals on Toronto to St. Louis flight tickets
American Airlines
22 Feb
YYZ6:29 p.m.Toronto Pearson Intl
16h 05m
1 stop
STL9:34 a.m.Lambert-St Louis
26 Feb
STL6:00 a.m.Lambert-St Louis
9h 02m
1 stop
YYZ4:02 p.m.Toronto Pearson Intl
C$ 476
Find similar
American Airlines
24 Feb
YYZ11:38 a.m.Toronto Pearson Intl
11h 31m
1 stop
STL10:09 p.m.Lambert-St Louis
28 Feb
STL10:04 a.m.Lambert-St Louis
4h 58m
1 stop
YYZ4:02 p.m.Toronto Pearson Intl
C$ 505
Find similar
American Airlines
24 Feb
YYZ6:00 a.m.Toronto Pearson Intl
10h 35m
1 stop
STL3:35 p.m.Lambert-St Louis
28 Feb
STL10:04 a.m.Lambert-St Louis
4h 58m
1 stop
YYZ4:02 p.m.Toronto Pearson Intl
C$ 518
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Toronto to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 16 December 2025.
Use the filters below to find and compare flights from Toronto to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 15/1

7:10 a.m.-10:34 p.m.

1 stop16h 24m

Lambert-St Louis

Sun 18/1

5:11 p.m.-2:20 p.m.

1 stop20h 09m

C$ 296

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 3/2

7:15 a.m.-11:33 p.m.

1 stop17h 18m

Lambert-St Louis

Sun 8/2

8:59 a.m.-2:20 p.m.

1 stop28h 21m

C$ 304

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 3/2

3:40 p.m.-6:51 a.m.

2 stops16h 11m

Lambert-St Louis

Sun 8/2

8:59 a.m.-2:20 p.m.

1 stop28h 21m

C$ 319

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 15/1

7:10 a.m.-10:34 p.m.

1 stop16h 24m

Lambert-St Louis

Sun 18/1

10:09 p.m.-9:11 p.m.

2 stops22h 02m

C$ 339

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/1

8:00 p.m.-12:12 p.m.

1 stop17h 12m

Lambert-St Louis

Sun 11/1

12:37 p.m.-7:00 a.m.

2 stops17h 23m

C$ 347

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 8/1

8:00 p.m.-12:12 p.m.

1 stop17h 12m

Lambert-St Louis

Sun 11/1

12:37 p.m.-6:47 a.m.

1 stop17h 10m

C$ 354

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 5/1

5:15 p.m.-10:33 p.m.

1 stop30h 18m

Lambert-St Louis

Mon 12/1

5:11 p.m.-8:11 p.m.

2 stops26h 00m

C$ 370

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Mon 5/1

5:15 p.m.-10:33 p.m.

1 stop30h 18m

Lambert-St Louis

Mon 12/1

1:07 p.m.-6:20 a.m.

1 stop16h 13m

C$ 374

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 7/1

12:30 p.m.-12:12 p.m.

2 stops24h 42m

Lambert-St Louis

Sun 11/1

12:37 p.m.-6:20 a.m.

1 stop16h 43m

C$ 377

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sun 11/1

7:10 a.m.-8:05 a.m.

1 stop25h 55m

Lambert-St Louis

Sat 17/1

3:43 p.m.-6:20 a.m.

2 stops37h 37m

C$ 380

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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?

The month of June is, on average, the cheapest month to fly to St. Louis from Toronto, with most prices found around C$ 512. If you don’t want to visit St. Louis in June, then you should wait until August to fly from Toronto, when ticket prices are also cheap, with an average price of C$ 547.

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

Our data shows that Thursday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 559. The most expensive day to fly to St. Louis is Monday, with ticket prices averaging around C$ 762.

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 in the morning when flights can be purchased for as low as C$ 539. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 663 on average. Flights to St. Louis from Toronto at noon 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 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$ 650 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$ 496 on momondo.

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

There is only 1 cabin class 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 22% 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 December 2025, prices for Toronto to St. Louis flights are approximately 48% 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$ 476

Fastest flight time

2h 06m

Direct flights

Every day

Airports in St. Louis

1 airport
The best flight deal from Toronto to St. Louis found on momondo in the last 72 hours is C$ 476
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

  • 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom C$ 371Free CancellationRating
7.2
11,048 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 412Free CancellationRating
7.4
9,094 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 459Free CancellationRating
7.1
10,527 reviews
Search Air Canada flights
DeltaPriceFrom C$ 473Free CancellationRating
7.9
8,010 reviews
Search Delta flights
WestJetPriceFrom C$ 556Free CancellationRating
7.2
3,202 reviews
Search WestJet flights

  • United Airlines Flights From Toronto to St. Louis

    Across 7 United Airlines flights from Toronto to St. Louis this week, the average price was C$ 630, with the best United Airlines deals starting from C$ 412 round-trip. 9,094 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, 10,527 ratings). Air Canada flies from Toronto to St. Louis around 7 times per week, with deals starting from C$ 459 round-trip and rising to an average price of around C$ 619.

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield
Litchfield

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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