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Cheap flights from St. Louis to Toronto from C$ 142

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Toronto departing on 7/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from St. Louis to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.
STL
-
YYZ
20h 09m1 stop
Multiple Airlines Logo
7:10 a.m. - 8:05 a.m.
YYZ
-
STL
25h 55m1 stop
C$ 316Multiple Airlines
Wed, 7 Jan - Sun, 11 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.
STL
-
YYZ
20h 09m1 stop
Multiple Airlines Logo
1:30 p.m. - 12:12 p.m.
YYZ
-
STL
23h 42m2 stops
C$ 321Multiple Airlines
Wed, 7 Jan - Sun, 11 Jan
Multiple Airlines Logo
5:11 p.m. - 8:11 p.m.
STL
-
YYZ
26h 00m2 stops
Multiple Airlines Logo
7:10 a.m. - 10:23 a.m.
YYZ
-
STL
28h 13m1 stop
C$ 333Multiple Airlines
Mon, 12 Jan - Thu, 29 Jan
Multiple Airlines Logo
5:11 p.m. - 2:16 p.m.
STL
-
YYZ
20h 05m1 stop
Multiple Airlines Logo
7:10 a.m. - 10:23 a.m.
YYZ
-
STL
28h 13m1 stop
C$ 335Multiple Airlines
Mon, 12 Jan - Thu, 29 Jan
Multiple Airlines Logo
12:37 p.m. - 6:20 a.m.
STL
-
YYZ
16h 43m1 stop
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
C$ 338Multiple Airlines
Sun, 11 Jan - Fri, 16 Jan
Multiple Airlines Logo
9:46 p.m. - 11:39 p.m.
STL
-
YYZ
24h 53m2 stops
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
C$ 340Multiple Airlines
Sun, 11 Jan - Fri, 16 Jan
Multiple Airlines Logo
12:37 p.m. - 7:00 a.m.
STL
-
YYZ
17h 23m2 stops
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
C$ 347Multiple Airlines
Sun, 11 Jan - Fri, 16 Jan
Multiple Airlines Logo
5:11 p.m. - 8:11 p.m.
STL
-
YYZ
26h 00m2 stops
Multiple Airlines Logo
7:10 a.m. - 9:21 a.m.
YYZ
-
STL
27h 11m1 stop
C$ 350Multiple Airlines
Mon, 12 Jan - Sun, 25 Jan
Multiple Airlines Logo
5:11 p.m. - 12:11 a.m.
STL
-
YYZ
30h 00m1 stop
Multiple Airlines Logo
7:10 a.m. - 10:34 p.m.
YYZ
-
STL
16h 24m1 stop
C$ 351Multiple Airlines
Sun, 11 Jan - Fri, 16 Jan
Multiple Airlines Logo
5:11 p.m. - 2:16 p.m.
STL
-
YYZ
20h 05m1 stop
Multiple Airlines Logo
7:10 a.m. - 9:21 a.m.
YYZ
-
STL
27h 11m1 stop
C$ 353Multiple Airlines
Mon, 12 Jan - Sun, 25 Jan

American Airlines flights from St. Louis to Toronto

Our best American Airlines deals on St. Louis to Toronto flight tickets
American Airlines
14 Feb
STL10:04 a.m.Lambert-St Louis
10h 25m
1 stop
YYZ9:29 p.m.Toronto Pearson Intl
21 Feb
YYZ6:00 a.m.Toronto Pearson Intl
13h 02m
1 stop
STL6:02 p.m.Lambert-St Louis
C$ 484
Find similar
American Airlines
25 Dec
STL6:02 a.m.Lambert-St Louis
8h 10m
2 stops
YYZ3:12 p.m.Toronto Pearson Intl
30 Dec
YYZ11:38 a.m.Toronto Pearson Intl
13h 06m
1 stop
STL11:44 p.m.Lambert-St Louis
C$ 1,127
Find similar
American Airlines
25 Dec
STL6:02 a.m.Lambert-St Louis
8h 10m
2 stops
YYZ3:12 p.m.Toronto Pearson Intl
30 Dec
YYZ10:54 a.m.Toronto Pearson Intl
11h 14m
1 stop
STL9:08 p.m.Lambert-St Louis
C$ 1,404
Find similar

Delta flights from St. Louis to Toronto

Our best Delta deals on St. Louis to Toronto flight tickets
Delta
30 Dec
STL6:05 a.m.Lambert-St Louis
8h 54m
1 stop
YYZ3:59 p.m.Toronto Pearson Intl
3 Jan
YYZ9:54 a.m.Toronto Pearson Intl
8h 36m
1 stop
STL5:30 p.m.Lambert-St Louis
C$ 902
Find similar
Delta
25 Dec
STL11:59 a.m.Lambert-St Louis
9h 51m
2 stops
YYZ10:50 p.m.Toronto Pearson Intl
30 Dec
YYZ6:05 a.m.Toronto Pearson Intl
11h 23m
2 stops
STL4:28 p.m.Lambert-St Louis
C$ 2,629
Find similar
Delta
25 Dec
STL11:59 a.m.Lambert-St Louis
9h 51m
2 stops
YYZ10:50 p.m.Toronto Pearson Intl
30 Dec
YYZ6:05 a.m.Toronto Pearson Intl
11h 23m
2 stops
STL4:28 p.m.Lambert-St Louis
C$ 2,654
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Toronto 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 18 December 2025.
Use the filters below to find and compare flights from St. Louis to Toronto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 7/1

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

1 stop20h 09m

Toronto Pearson Intl

Sun 11/1

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

1 stop25h 55m

C$ 316

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 7/1

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

1 stop20h 09m

Toronto Pearson Intl

Sun 11/1

1:30 p.m.-12:12 p.m.

2 stops23h 42m

C$ 321

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/1

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

2 stops26h 00m

Toronto Pearson Intl

Thu 29/1

7:10 a.m.-10:23 a.m.

1 stop28h 13m

C$ 333

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/1

5:11 p.m.-2:16 p.m.

1 stop20h 05m

Toronto Pearson Intl

Thu 29/1

7:10 a.m.-10:23 a.m.

1 stop28h 13m

C$ 335

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

1 stop16h 43m

Toronto Pearson Intl

Fri 16/1

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

1 stop16h 24m

C$ 338

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

9:46 p.m.-11:39 p.m.

2 stops24h 53m

Toronto Pearson Intl

Fri 16/1

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

1 stop16h 24m

C$ 340

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

2 stops17h 23m

Toronto Pearson Intl

Fri 16/1

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

1 stop16h 24m

C$ 347

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/1

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

2 stops26h 00m

Toronto Pearson Intl

Sun 25/1

7:10 a.m.-9:21 a.m.

1 stop27h 11m

C$ 350

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

5:11 p.m.-12:11 a.m.

1 stop30h 00m

Toronto Pearson Intl

Fri 16/1

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

1 stop16h 24m

C$ 351

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 12/1

5:11 p.m.-2:16 p.m.

1 stop20h 05m

Toronto Pearson Intl

Sun 25/1

7:10 a.m.-9:21 a.m.

1 stop27h 11m

C$ 353

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 Toronto from

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

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 C$ 433. The month of June is another great option to travel to Toronto, with average flight prices from St. Louis averaging around C$ 540.

What is the cheapest day to depart on your flight to Toronto?

According to our data, Friday is the cheapest day to fly to Toronto from St. Louis. The lowest ticket price found for a Friday departure recently was C$ 578. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from St. Louis to Toronto on a Wednesday will generally be more expensive and average around C$ 896. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Toronto?

Flying to Toronto from St. Louis at noon is the least expensive time of day to depart. momondo users have found prices as low as C$ 591 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around C$ 765. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

How far in advance should I book a flight to Toronto?

You are more likely to see cheaper flights to Toronto from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Toronto for around C$ 700 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Toronto from St. Louis for as low as C$ 304 on momondo.

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

There is only 1 cabin class 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 8% 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

Fastest flight time

2h 01m

Direct flights

Every day

Airports in Toronto

3 airports
The fastest flight from St. Louis to Toronto takes 2h 01m
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?

    There are 1062.1 km between Lambert-St Louis and Toronto. In terms of flight time, this usually takes a little over 2h 01m.

  • 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 were last updated today.

  • How many operators does momondo search 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?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 necessary travel and health documents for your Toronto trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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
Air CanadaPriceFrom C$ 300Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights

  • Air Canada Flights From St. Louis to Toronto

    The lowest priced Air Canada flight from St. Louis to Toronto from the last 72 hours was C$ 300. Generally, Air Canada has 7 flights on this route every week with an average price of C$ 642. Air Canada is rated 7.1/10 by our users.

Travelling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Apsley

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Toronto . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Toronto from St. Louis.

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

If you are simply researching potential flights to Toronto, momondo offers a useful price alert feature which will track prices for flights to Toronto from St. Louis and alert you when they change.

An easier way to manage your Toronto 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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Find better results for your trip to Canada

Fly into one of these airports located in Toronto

Airports listed have a maximum distance of 83.6 km from Toronto
Toronto Region of Waterloo Intl Airport
Toronto Island Airport
Toronto Pearson Intl Airport