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Cheap flights from St. Louis to Toronto from C$ 168

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 16/12. 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. - 10:37 p.m.YYZ-STL
16h 27m1 stop
C$ 331Multiple Airlines
Find Deal
Sun, 11 Jan - Fri, 16 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
Multiple Airlines Logo
7:55 p.m. - 12:15 p.m.YYZ-STL
17h 20m1 stop
C$ 364Multiple Airlines
Find Deal
Sun, 11 Jan - Sat, 17 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
Multiple Airlines Logo
7:10 a.m. - 10:37 p.m.YYZ-STL
16h 27m1 stop
C$ 367Multiple Airlines
Find Deal
Sat, 10 Jan - Fri, 16 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
Multiple Airlines Logo
7:15 a.m. - 10:37 p.m.YYZ-STL
16h 22m1 stop
C$ 377Multiple Airlines
Find Deal
Sun, 11 Jan - Tue, 13 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
Multiple Airlines Logo
7:15 a.m. - 10:37 p.m.YYZ-STL
16h 22m2 stops
C$ 378Multiple Airlines
Find Deal
Sun, 11 Jan - Wed, 14 Jan
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
Multiple Airlines Logo
7:15 a.m. - 10:37 p.m.YYZ-STL
16h 22m1 stop
C$ 380Multiple Airlines
Find Deal
Sun, 11 Jan - Wed, 14 Jan
Multiple Airlines Logo
5:11 p.m. - 11:46 a.m.STL-YYZ
17h 35m1 stop
Multiple Airlines Logo
7:10 a.m. - 10:37 p.m.YYZ-STL
16h 27m1 stop
C$ 384Multiple Airlines
Find Deal
Tue, 6 Jan - Fri, 16 Jan
American Airlines Logo
6:33 p.m. - 10:57 a.m.STL-YYZ
15h 24m1 stop
American Airlines Logo
6:00 a.m. - 6:03 p.m.YYZ-STL
13h 03m1 stop
C$ 387American Airlines
Find Deal
Sat, 14 Feb - Sat, 21 Feb
Multiple Airlines Logo
5:11 p.m. - 11:46 a.m.STL-YYZ
17h 35m1 stop
Multiple Airlines Logo
5:15 p.m. - 7:54 a.m.YYZ-STL
15h 39m1 stop
C$ 391Multiple Airlines
Find Deal
Tue, 6 Jan - Thu, 15 Jan
American Airlines Logo
5:15 a.m. - 4:03 p.m.STL-YYZ
9h 48m1 stop
American Airlines Logo
6:23 p.m. - 8:35 a.m.YYZ-STL
15h 12m1 stop
C$ 401American Airlines
Find Deal
Tue, 16 Dec - Tue, 23 Dec

American Airlines flights from St. Louis to Toronto

Our best American Airlines deals on St. Louis to Toronto flight tickets
American Airlines
14 Feb
STL6:33 p.m.Lambert-St Louis
15h 24m
1 stop
YYZ10:57 a.m.Toronto Pearson Intl
21 Feb
YYZ6:00 a.m.Toronto Pearson Intl
13h 03m
1 stop
STL6:03 p.m.Lambert-St Louis
C$ 387
Find similar
American Airlines
16 Dec
STL5:15 a.m.Lambert-St Louis
9h 48m
1 stop
YYZ4:03 p.m.Toronto Pearson Intl
23 Dec
YYZ6:23 p.m.Toronto Pearson Intl
15h 12m
1 stop
STL8:35 a.m.Lambert-St Louis
C$ 401
Find similar
American Airlines
8 Jan
STL6:00 a.m.Lambert-St Louis
9h 03m
1 stop
YYZ4:03 p.m.Toronto Pearson Intl
14 Jan
YYZ11:30 a.m.Toronto Pearson Intl
7h 44m
1 stop
STL6:14 p.m.Lambert-St Louis
C$ 451
Find similar

Delta flights from St. Louis to Toronto

Our best Delta deals on St. Louis to Toronto flight tickets
Delta
16 Nov
STL6:40 a.m.Lambert-St Louis
3h 44m
1 stop
YYZ11:24 a.m.Toronto Pearson Intl
19 Nov
YYZ7:50 a.m.Toronto Pearson Intl
5h 50m
1 stop
STL12:40 p.m.Lambert-St Louis
C$ 691
Find similar
Delta
13 Nov
STL6:40 a.m.Lambert-St Louis
8h 34m
2 stops
YYZ4:14 p.m.Toronto Pearson Intl
14 Nov
YYZ6:10 p.m.Toronto Pearson Intl
6h 34m
1 stop
STL11:44 p.m.Lambert-St Louis
C$ 1,257
Find similar
Delta
7 Nov
STL6:00 a.m.Lambert-St Louis
9h 09m
1 stop
YYZ4:09 p.m.Toronto Pearson Intl
10 Nov
YYZ6:05 a.m.Toronto Pearson Intl
10h 45m
1 stop
STL3:50 p.m.Lambert-St Louis
C$ 1,331
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 2 November 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

Sun 11/1

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

1 stop20h 09m

Toronto Pearson Intl

Fri 16/1

7:10 a.m.-10:37 p.m.

1 stop16h 27m

C$ 331

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

1 stop20h 09m

Toronto Pearson Intl

Sat 17/1

7:55 p.m.-12:15 p.m.

1 stop17h 20m

C$ 364

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 10/1

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

1 stop20h 09m

Toronto Pearson Intl

Fri 16/1

7:10 a.m.-10:37 p.m.

1 stop16h 27m

C$ 367

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

1 stop20h 09m

Toronto Pearson Intl

Tue 13/1

7:15 a.m.-10:37 p.m.

1 stop16h 22m

C$ 377

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

1 stop20h 09m

Toronto Pearson Intl

Wed 14/1

7:15 a.m.-10:37 p.m.

2 stops16h 22m

C$ 378

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 11/1

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

1 stop20h 09m

Toronto Pearson Intl

Wed 14/1

7:15 a.m.-10:37 p.m.

1 stop16h 22m

C$ 380

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 6/1

5:11 p.m.-11:46 a.m.

1 stop17h 35m

Toronto Pearson Intl

Fri 16/1

7:10 a.m.-10:37 p.m.

1 stop16h 27m

C$ 384

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sat 14/2

6:33 p.m.-10:57 a.m.

1 stop15h 24m

Toronto Pearson Intl

Sat 21/2

6:00 a.m.-6:03 p.m.

1 stop13h 03m

C$ 387

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 6/1

5:11 p.m.-11:46 a.m.

1 stop17h 35m

Toronto Pearson Intl

Thu 15/1

5:15 p.m.-7:54 a.m.

1 stop15h 39m

C$ 391

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 16/12

5:15 a.m.-4:03 p.m.

1 stop9h 48m

Toronto Pearson Intl

Tue 23/12

6:23 p.m.-8:35 a.m.

1 stop15h 12m

C$ 401

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 January is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around C$ 402. The month of April is another great option to travel to Toronto, with average flight prices from St. Louis averaging around C$ 440.

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$ 520. 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 Sunday will generally be more expensive and average around C$ 940. 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$ 601 when looking at flights departing at noon. Try not to purchase tickets in the morning because they tend to be around C$ 778. 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$ 686 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$ 310 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 24% 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

Best price found

C$ 475

Fastest flight time

1h 57m

Direct flights

Every day

Airports in Toronto

1 airport
The best flight deal from St. Louis to Toronto found on momondo in the last 72 hours is C$ 475
The fastest flight from St. Louis to Toronto takes 1h 57m
Direct flights go from St. Louis to Toronto every day.
There is 1 airport near Toronto: 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 6h 58m.

  • 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?

  • What is the most popular airline 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$ 305Free CancellationRating
7.1
10,392 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$ 305. Generally, Air Canada has 6 flights on this route every week with an average price of C$ 653. 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

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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