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Cheap flights from St. Louis to Toronto from $163

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 11/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
7:21 am - 6:35 pm
STL
-
YYZ
10h 14m
1 stop
American Airlines Logo
6:30 am - 8:44 pm
YYZ
-
STL
15h 14m
1 stop
$384American Airlines
Wed, Sep 16 - Sat, Sep 19
American Airlines Logo
6:00 am - 2:33 pm
STL
-
YYZ
7h 33m
1 stop
American Airlines Logo
1:15 pm - 8:44 pm
YYZ
-
STL
8h 29m
1 stop
$385American Airlines
Wed, Sep 2 - Wed, Sep 23
American Airlines Logo
6:00 am - 2:33 pm
STL
-
YYZ
7h 33m
1 stop
American Airlines Logo
3:14 pm - 12:14 am
YYZ
-
STL
10h 00m
1 stop
$396American Airlines
Tue, Aug 25 - Tue, Sep 8
Multiple Airlines Logo
6:17 pm - 2:05 pm
STL
-
YYZ
18h 48m
2 stops
Multiple Airlines Logo
4:50 pm - 7:39 pm
YYZ
-
STL
27h 49m
1 stop
$403Multiple Airlines
Mon, Aug 24 - Sun, Oct 4
American Airlines Logo
6:55 am - 5:34 pm
STL
-
YYZ
9h 39m
1 stop
American Airlines Logo
1:17 pm - 12:16 am
YYZ
-
STL
11h 59m
1 stop
$409American Airlines
Tue, Jul 21 - Tue, Jul 28
Multiple Airlines Logo
10:35 am - 4:55 pm
STL
-
YYZ
29h 20m
2 stops
Multiple Airlines Logo
7:45 am - 7:39 pm
YYZ
-
STL
12h 54m
1 stop
$418Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
American Airlines Logo
5:00 am - 2:32 pm
STL
-
YYZ
8h 32m
1 stop
American Airlines Logo
4:44 pm - 11:58 pm
YYZ
-
STL
8h 14m
1 stop
$419American Airlines
Thu, Oct 1 - Wed, Dec 2
Multiple Airlines Logo
10:35 am - 4:55 pm
STL
-
YYZ
29h 20m
2 stops
Multiple Airlines Logo
7:45 am - 7:39 pm
YYZ
-
STL
12h 54m
1 stop
$422Multiple Airlines
Thu, Oct 8 - Thu, Oct 15
Multiple Airlines Logo
10:35 am - 8:55 pm
STL
-
YYZ
33h 20m
2 stops
Multiple Airlines Logo
7:45 am - 7:39 pm
YYZ
-
STL
12h 54m
1 stop
$423Multiple Airlines
Sun, Sep 13 - Mon, Sep 21
Multiple Airlines Logo
10:35 am - 4:55 pm
STL
-
YYZ
29h 20m
2 stops
Multiple Airlines Logo
7:45 am - 7:39 pm
YYZ
-
STL
12h 54m
1 stop
$424Multiple Airlines
Mon, Sep 14 - Mon, Sep 21

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Air Canada flights from St. Louis to Toronto Pearson Intl Airport

Our best Air Canada deals on St. Louis to Toronto Pearson Intl Airport flight tickets
Air Canada
Jul 16
STL8:55 amLambert-St Louis
1h 57m
YYZ11:52 amToronto Pearson Intl
Jul 19
YYZ12:55 pmToronto Pearson Intl
2h 07m
STL2:02 pmLambert-St Louis
$518
Air Canada
Jul 16
STL8:55 amLambert-St Louis
1h 57m
YYZ11:52 amToronto Pearson Intl
Jul 19
YYZ12:55 pmToronto Pearson Intl
2h 07m
STL2:02 pmLambert-St Louis
$519
Air Canada
Jul 16
STL8:55 amLambert-St Louis
1h 57m
YYZ11:52 amToronto Pearson Intl
Jul 20
YYZ7:15 pmToronto Pearson Intl
2h 07m
STL8:22 pmLambert-St Louis
$520

Delta flights from St. Louis to Toronto Pearson Intl Airport

Our best Delta deals on St. Louis to Toronto Pearson Intl Airport flight tickets
Delta
Jul 4
STL5:36 pmLambert-St Louis
4h 38m
1 stop
YYZ11:14 pmToronto Pearson Intl
Jul 12
YYZ6:10 amToronto Pearson Intl
4h 21m
1 stop
STL9:31 amLambert-St Louis
$695
Delta
Jul 16
STL6:30 amLambert-St Louis
10h 39m
2 stops
YYZ6:09 pmToronto Pearson Intl
Jul 19
YYZ9:45 amToronto Pearson Intl
4h 20m
1 stop
STL1:05 pmLambert-St Louis
$793
Delta
Jul 4
STL2:25 pmLambert-St Louis
22h 17m
1 stop
YYZ1:42 pmToronto Pearson Intl
Jul 12
YYZ6:10 amToronto Pearson Intl
4h 21m
1 stop
STL9:31 amLambert-St Louis
$826

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Toronto Pearson Intl Airport 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 832,500 searches. Data last updated July 2, 2026.
Use the filters below to find and compare flights from St. Louis to Toronto Pearson Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 9/16

7:21 am-6:35 pm

1 stop10h 14m

Toronto Pearson Intl

Sat 9/19

6:30 am-8:44 pm

1 stop15h 14m

$384
Quickest round-trip

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 9/2

6:00 am-2:33 pm

1 stop7h 33m

Toronto Pearson Intl

Wed 9/23

1:15 pm-8:44 pm

1 stop8h 29m

$385

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 8/25

6:00 am-2:33 pm

1 stop7h 33m

Toronto Pearson Intl

Tue 9/8

3:14 pm-12:14 am

1 stop10h 00m

$396

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 8/24

6:17 pm-2:05 pm

2 stops18h 48m

Toronto Pearson Intl

Sun 10/4

4:50 pm-7:39 pm

1 stop27h 49m

$403

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 7/21

6:55 am-5:34 pm

1 stop9h 39m

Toronto Pearson Intl

Tue 7/28

1:17 pm-12:16 am

1 stop11h 59m

$409

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 9/28

10:35 am-4:55 pm

2 stops29h 20m

Toronto Pearson Intl

Mon 10/5

7:45 am-7:39 pm

1 stop12h 54m

$418

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 10/1

5:00 am-2:32 pm

1 stop8h 32m

Toronto Pearson Intl

Wed 12/2

4:44 pm-11:58 pm

1 stop8h 14m

$419

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Thu 10/8

10:35 am-4:55 pm

2 stops29h 20m

Toronto Pearson Intl

Thu 10/15

7:45 am-7:39 pm

1 stop12h 54m

$422

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Sun 9/13

10:35 am-8:55 pm

2 stops33h 20m

Toronto Pearson Intl

Mon 9/21

7:45 am-7:39 pm

1 stop12h 54m

$423

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Mon 9/14

10:35 am-4:55 pm

2 stops29h 20m

Toronto Pearson Intl

Mon 9/21

7:45 am-7:39 pm

1 stop12h 54m

$424

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 Pearson Intl Airport

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 Pearson Intl Airport?

What is the cheapest month to fly to Toronto Pearson Intl Airport?

The cheapest month to fly to Toronto Pearson Intl Airport from St. Louis is in December. Flight prices, which tend to average around $466, are often lower during this time because this is during the off-season. If you don’t want to visit Toronto Pearson Intl Airport in December, then you should wait until November to fly from St. Louis, when ticket prices are also cheap, with an average price of $482.

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

The cheapest day to depart from St. Louis to Toronto Pearson Intl Airport is on a Friday when prices can be found for as low as $797. The most expensive day to fly to Toronto Pearson Intl Airport is Saturday, with ticket prices averaging around $946.

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

Flying to Toronto Pearson Intl Airport from St. Louis in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $776 when looking at flights departing in the afternoon. Flights at noon are often more expensive with an average ticket price of $1,058.

What is the cheapest Lambert-St Louis to Toronto Pearson Intl flight route?

Fly from Lambert-St Louis to Toronto Pearson Intl for the best Lambert-St Louis - Toronto Pearson Intl flight prices

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

There are 4 cabin classes available to choose from on St. Louis to Toronto Pearson Intl Airport 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 Pearson Intl Airport flights?

You could potentially save up to 1% on your flight if you consider stops on a St. Louis to Toronto Pearson Intl Airport flight.

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

As of July 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 12% cheaper when compared to flights at the same time last year.

When to book flights from St. Louis to Toronto Pearson Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Toronto Pearson Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Toronto Pearson Intl Airport (STL to YYZ) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Toronto Pearson Intl Airport

Best Price Found

$275

Fastest flight time

1h 54m

Direct flights

Every day
The best one-way flight to Toronto Pearson Intl Airport from St. Louis in the past 72 hours is $275. The best round-trip flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $435.
The fastest flight from St. Louis to Toronto Pearson Intl Airport takes 1h 54m
Direct flights go from St. Louis to Toronto Pearson Intl Airport every day.
Search flight deals

Frequently asked questions about flying from St. Louis to Toronto Pearson Intl Airport

  • How far is Lambert-St Louis to Toronto Pearson Intl by plane?

    A flight from Lambert-St Louis to Toronto Pearson Intl will travel around 650.6 mi. In terms of flight time, this usually takes a little over 1h 54m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

    Prices for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Toronto Pearson Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Toronto Pearson Intl Airport.

  • What documentation or ID do you need to fly to Toronto Pearson Intl Airport?

    The required travel and health documents for your Toronto Pearson Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Toronto Pearson Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

  • What is the most popular airline from St. Louis to Toronto Pearson Intl Airport?

Best airlines flying from St. Louis to Toronto Pearson Intl Airport

Compare and see reviews for airlines that fly from St. Louis to Toronto Pearson Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $247Free CancellationRating
7.1
11,287 reviews
Search Air Canada flights
United AirlinesPriceFrom $253Free CancellationRating
7.4
9,926 reviews
Search United Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.1
11,768 reviews
Search American Airlines flights

  • United Airlines Flights From St. Louis to Toronto Pearson Intl Airport

    United Airlines operates around 11 flights from St. Louis to Toronto Pearson Intl Airport every week. The average price of these flights found in the last 72 hours has been $616, but momondo users have found United Airlines deals from St. Louis to Toronto Pearson Intl Airport from as low as $253 round-trip. United Airlines has been scored 7.4/10 in 9,926 reviews.

  • Air Canada Flights From St. Louis to Toronto Pearson Intl Airport

    Air Canada (7.1/10 from 11,287 reviews) operates around 11 flights from St. Louis to Toronto Pearson Intl Airport in any given week. The average Air Canada airfare for this route is around $617, with deals from around $247 rare but found on momondo. Referenced prices are for round-trip St. Louis to Toronto Pearson Intl Airport flight searches in the last 72 hours.

Traveling to a place near Toronto?

Book flights to Toronto if you plan to visit one of these locations
Niagara Falls
Mississauga
Niagara-on-the-Lake
Brampton
Markham
Kitchener
Vaughan
Barrie
Oakville
Richmond Hill
Collingwood
Burlington
Cambridge
Orillia
Guelph
Peterborough
Whitby
Oshawa
Milton
Stratford

Why use momondo?

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

Finding the right flight to Toronto from St. Louis is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Toronto quick and easy, saving you time and money.

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

All flight searches from St. Louis to Toronto on momondo can be filtered to show those which offer flexible booking policies.

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 Pearson Intl Airport trip

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