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Cheap flights from St. Louis to Toronto from C$ 222

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 10/6. 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 St. Louis to Toronto

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
6:35 a.m. - 5:44 p.m.
STL
-
YYZ
10h 09m
1 stop
American Airlines Logo
3:13 p.m. - 12:16 a.m.
YYZ
-
STL
10h 03m
1 stop
C$ 533American Airlines
Tue, 2 Jun - Tue, 9 Jun
Multiple Airlines Logo
4:17 p.m. - 4:45 p.m.
STL
-
YYZ
23h 28m
1 stop
Multiple Airlines Logo
6:30 a.m. - 8:52 a.m.
YYZ
-
STL
27h 22m
2 stops
C$ 539Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
American Airlines Logo
9:09 a.m. - 5:44 p.m.
STL
-
YYZ
7h 35m
1 stop
American Airlines Logo
7:25 a.m. - 2:02 p.m.
YYZ
-
STL
7h 37m
1 stop
C$ 561American Airlines
Wed, 17 Jun - Wed, 24 Jun
Multiple Airlines Logo
5:27 p.m. - 2:05 p.m.
STL
-
YYZ
19h 38m
2 stops
Multiple Airlines Logo
7:45 a.m. - 11:49 p.m.
YYZ
-
STL
17h 04m
1 stop
C$ 566Multiple Airlines
Wed, 3 Jun - Wed, 10 Jun
American Airlines Logo
1:42 p.m. - 11:29 p.m.
STL
-
YYZ
8h 47m
1 stop
American Airlines Logo
7:25 a.m. - 2:02 p.m.
YYZ
-
STL
7h 37m
1 stop
C$ 567American Airlines
Tue, 9 Jun - Tue, 16 Jun
American Airlines Logo
1:42 p.m. - 11:29 p.m.
STL
-
YYZ
8h 47m
1 stop
American Airlines Logo
1:15 p.m. - 12:16 a.m.
YYZ
-
STL
12h 01m
1 stop
C$ 572American Airlines
Tue, 9 Jun - Tue, 16 Jun
American Airlines Logo
9:08 a.m. - 5:34 p.m.
STL
-
YYZ
7h 26m
1 stop
American Airlines Logo
1:17 p.m. - 12:16 a.m.
YYZ
-
STL
11h 59m
1 stop
C$ 588American Airlines
Tue, 21 Jul - Tue, 28 Jul
Multiple Airlines Logo
4:17 p.m. - 4:45 p.m.
STL
-
YYZ
23h 28m
1 stop
Multiple Airlines Logo
4:45 p.m. - 6:36 p.m.
YYZ
-
STL
26h 51m
2 stops
C$ 589Multiple Airlines
Wed, 10 Jun - Sun, 14 Jun
Multiple Airlines Logo
4:52 p.m. - 2:05 p.m.
STL
-
YYZ
20h 13m
2 stops
Multiple Airlines Logo
9:50 a.m. - 11:59 p.m.
YYZ
-
STL
15h 09m
1 stop
C$ 595Multiple Airlines
Mon, 13 Jul - Fri, 17 Jul
American Airlines Logo
6:00 a.m. - 5:44 p.m.
STL
-
YYZ
10h 44m
1 stop
American Airlines Logo
7:20 a.m. - 4:30 p.m.
YYZ
-
STL
10h 10m
1 stop
C$ 598American Airlines
Thu, 28 May - Wed, 3 Jun

American Airlines flights from St. Louis to Toronto

Our best American Airlines deals on St. Louis to Toronto flight tickets
American Airlines
2 Jun
STL6:35 a.m.Lambert-St Louis
10h 09m
1 stop
YYZ5:44 p.m.Toronto Pearson Intl
9 Jun
YYZ3:13 p.m.Toronto Pearson Intl
10h 03m
1 stop
STL12:16 a.m.Lambert-St Louis
C$ 533
American Airlines
17 Jun
STL9:09 a.m.Lambert-St Louis
7h 35m
1 stop
YYZ5:44 p.m.Toronto Pearson Intl
24 Jun
YYZ7:25 a.m.Toronto Pearson Intl
7h 37m
1 stop
STL2:02 p.m.Lambert-St Louis
C$ 561
American Airlines
9 Jun
STL1:42 p.m.Lambert-St Louis
8h 47m
1 stop
YYZ11:29 p.m.Toronto Pearson Intl
16 Jun
YYZ7:25 a.m.Toronto Pearson Intl
7h 37m
1 stop
STL2:02 p.m.Lambert-St Louis
C$ 567

Air Canada flights from St. Louis to Toronto

Our best Air Canada deals on St. Louis to Toronto flight tickets
Air Canada
21 May
STL7:05 a.m.Lambert-St Louis
1h 51m
YYZ9:56 a.m.Toronto Pearson Intl
25 May
YYZ11:00 a.m.Toronto Pearson Intl
2h 06m
STL12:06 p.m.Lambert-St Louis
C$ 647
Air Canada
21 May
STL7:05 a.m.Lambert-St Louis
1h 51m
YYZ9:56 a.m.Toronto Pearson Intl
25 May
YYZ4:00 p.m.Toronto Pearson Intl
5h 25m
1 stop
STL8:25 p.m.Lambert-St Louis
C$ 650
Air Canada
22 Jun
STL1:20 p.m.Lambert-St Louis
5h 35m
1 stop
YYZ7:55 p.m.Toronto Pearson Intl
29 Jun
YYZ11:15 a.m.Toronto Pearson Intl
2h 06m
STL12:21 p.m.Lambert-St Louis
C$ 659

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 10 May 2026.
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

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/6

6:35 a.m.-5:44 p.m.

1 stop10h 09m

Toronto Pearson Intl

Tue 9/6

3:13 p.m.-12:16 a.m.

1 stop10h 03m

C$ 533

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Tue 16/6

6:30 a.m.-8:52 a.m.

2 stops27h 22m

C$ 539
Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 17/6

9:09 a.m.-5:44 p.m.

1 stop7h 35m

Toronto Pearson Intl

Wed 24/6

7:25 a.m.-2:02 p.m.

1 stop7h 37m

C$ 561

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/6

5:27 p.m.-2:05 p.m.

2 stops19h 38m

Toronto Pearson Intl

Wed 10/6

7:45 a.m.-11:49 p.m.

1 stop17h 04m

C$ 566

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

1:42 p.m.-11:29 p.m.

1 stop8h 47m

Toronto Pearson Intl

Tue 16/6

7:25 a.m.-2:02 p.m.

1 stop7h 37m

C$ 567

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

1:42 p.m.-11:29 p.m.

1 stop8h 47m

Toronto Pearson Intl

Tue 16/6

1:15 p.m.-12:16 a.m.

1 stop12h 01m

C$ 572

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 21/7

9:08 a.m.-5:34 p.m.

1 stop7h 26m

Toronto Pearson Intl

Tue 28/7

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

1 stop11h 59m

C$ 588

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 10/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Sun 14/6

4:45 p.m.-6:36 p.m.

2 stops26h 51m

C$ 589

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 13/7

4:52 p.m.-2:05 p.m.

2 stops20h 13m

Toronto Pearson Intl

Fri 17/7

9:50 a.m.-11:59 p.m.

1 stop15h 09m

C$ 595

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 28/5

6:00 a.m.-5:44 p.m.

1 stop10h 44m

Toronto Pearson Intl

Wed 3/6

7:20 a.m.-4:30 p.m.

1 stop10h 10m

C$ 598

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 June is, on average, the cheapest month to fly to Toronto from St. Louis, with most prices found around C$ 216. The month of September is another great option to travel to Toronto, with average flight prices from St. Louis averaging around C$ 224.

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$ 574. 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$ 783. 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 in the morning is the least expensive time of day to depart. momondo users have found prices as low as C$ 553 when looking at flights departing in the morning. Try not to purchase tickets at noon because they tend to be around C$ 783. 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

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

You could potentially save up to 27% 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?

As of May 2026, prices for St. Louis to Toronto flights are approximately 89% more expensive when compared to flights at the same time last year.

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$ 284

Fastest flight time

1h 51m

Direct flights

Every day

Airports in Toronto

3 airports
The best flight deal from St. Louis to Toronto found on momondo in the last 72 hours is C$ 284
The fastest flight from St. Louis to Toronto takes 1h 51m
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

Frequently asked questions about flying from St. Louis to Toronto

  • 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 1h 51m.

  • 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$ 324Free CancellationRating
7.1
11,012 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$ 324. Generally, Air Canada has 13 flights on this route every week with an average price of C$ 637. 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