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Cheap flights from St. Louis to Toronto from $141

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 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
10h 14m1 stop Chicago O'Hare Intl
American Airlines Logo
1:15 pm - 12:27 amYYZ  Toronto Pearson Intl-STL Lambert-St Louis
12h 12m1 stop Chicago O'Hare Intl
$365American Airlines
Wed, Sep 16 - Mon, Sep 21
American Airlines Logo
1:49 pm - 11:26 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
8h 37m1 stop Chicago O'Hare Intl
American Airlines Logo
1:15 pm - 12:27 amYYZ  Toronto Pearson Intl-STL Lambert-St Louis
12h 12m1 stop Chicago O'Hare Intl
$365American Airlines
Sat, Sep 19 - Mon, Sep 21
American Airlines Logo
5:00 am - 2:32 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
8h 32m1 stop Chicago O'Hare Intl
American Airlines Logo
11:40 am - 8:44 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
10h 04m1 stop Chicago O'Hare Intl
$365American Airlines
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
6:35 pm - 2:25 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
18h 50m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale
Multiple Airlines Logo
7:15 am - 11:16 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
17h 01m1 stop Orlando
$387Multiple Airlines
Fri, Oct 23 - Thu, Oct 29
Multiple Airlines Logo
6:35 pm - 2:25 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
18h 50m2 stops Atlanta Hartsfield-Jackson Fort Lauderdale
Multiple Airlines Logo
9:35 am - 11:13 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
14h 38m1 stop Orlando
$388Multiple Airlines
Fri, Oct 23 - Mon, Oct 26
Delta Logo
11:20 am - 11:15 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
10h 55m1 stop Minneapolis St Paul
Delta Logo
6:30 am - 11:21 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
17h 51m1 stop Minneapolis St Paul
$389Delta
Sat, Oct 17 - Tue, Oct 20
United Airlines Logo
8:00 am - 5:01 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
8h 01m1 stop Chicago O'Hare Intl
United Airlines Logo
2:00 pm - 9:21 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
8h 21m1 stop Chicago O'Hare Intl
$573United Airlines
Wed, Oct 14 - Mon, Oct 19
United Airlines Logo
9:04 am - 5:56 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
7h 52m1 stop Chicago O'Hare Intl
United Airlines Logo
11:00 am - 9:21 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
11h 21m1 stop Chicago O'Hare Intl
$573United Airlines
Tue, Oct 13 - Mon, Oct 19
Air Canada Logo
8:55 am - 11:49 amSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
1h 54mnonstop
Air Canada Logo
12:55 pm - 2:00 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
2h 05mnonstop
$617Air Canada
Thu, Sep 17 - Sun, Sep 20
Air Canada Logo
2:40 pm - 5:34 pmSTL  Lambert-St Louis-YYZ Toronto Pearson Intl
1h 54mnonstop
Air Canada Logo
12:55 pm - 2:00 pmYYZ  Toronto Pearson Intl-STL Lambert-St Louis
2h 05mnonstop
$625Air Canada
Sun, Sep 27 - Wed, Sep 30

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American Airlines flights from St. Louis to Toronto Pearson Intl Airport

Our best American Airlines deals on St. Louis to Toronto Pearson Intl Airport flight tickets
American Airlines
Sep 16
STL5:00 amLambert-St Louis
8h 32m
1 stop
YYZ2:32 pmToronto Pearson Intl
Sep 23
YYZ11:40 amToronto Pearson Intl
10h 04m
1 stop
STL8:44 pmLambert-St Louis
$365
American Airlines
Sep 16
STL7:21 amLambert-St Louis
10h 14m
1 stop
YYZ6:35 pmToronto Pearson Intl
Sep 21
YYZ1:15 pmToronto Pearson Intl
12h 12m
1 stop
STL12:27 amLambert-St Louis
$366
American Airlines
Sep 22
STL5:00 amLambert-St Louis
8h 32m
1 stop
YYZ2:32 pmToronto Pearson Intl
Sep 29
YYZ6:30 amToronto Pearson Intl
7h 46m
1 stop
STL1:16 pmLambert-St Louis
$372

WestJet flights from St. Louis to Toronto Pearson Intl Airport

Our best WestJet deals on St. Louis to Toronto Pearson Intl Airport flight tickets
WestJet
Sep 10
STL10:40 amLambert-St Louis
5h 38m
1 stop
YYZ5:18 pmToronto Pearson Intl
Sep 10
YYZ8:00 pmToronto Pearson Intl
14h 34m
2 stops
STL9:34 amLambert-St Louis
$504
WestJet
Sep 10
STL4:10 pmLambert-St Louis
24h 10m
1 stop
YYZ5:20 pmToronto Pearson Intl
Sep 11
YYZ8:00 pmToronto Pearson Intl
17h 32m
2 stops
STL12:32 pmLambert-St Louis
$622
WestJet
Sep 10
STL10:29 amLambert-St Louis
3h 46m
1 stop
YYZ3:15 pmToronto Pearson Intl
Sep 10
YYZ7:24 pmToronto Pearson Intl
4h 52m
1 stop
STL11:16 pmLambert-St Louis
$628

momondo Fare Finder

 
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 Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 9/16

7:21 am-6:35 pm

1 stop10h 14m

Toronto Pearson Intl

Mon 9/21

1:15 pm-12:27 am

1 stop12h 12m

$365

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sat 9/19

1:49 pm-11:26 pm

1 stop8h 37m

Toronto Pearson Intl

Mon 9/21

1:15 pm-12:27 am

1 stop12h 12m

$365

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 9/16

5:00 am-2:32 pm

1 stop8h 32m

Toronto Pearson Intl

Wed 9/23

11:40 am-8:44 pm

1 stop10h 04m

$365

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Fri 10/23

6:35 pm-2:25 pm

2 stops18h 50m

Toronto Pearson Intl

Thu 10/29

7:15 am-11:16 pm

1 stop17h 01m

$387

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Fri 10/23

6:35 pm-2:25 pm

2 stops18h 50m

Toronto Pearson Intl

Mon 10/26

9:35 am-11:13 pm

1 stop14h 38m

$388

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sat 10/17

11:20 am-11:15 pm

1 stop10h 55m

Toronto Pearson Intl

Tue 10/20

6:30 am-11:21 pm

1 stop17h 51m

$389

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Wed 10/14

8:00 am-5:01 pm

1 stop8h 01m

Toronto Pearson Intl

Mon 10/19

2:00 pm-9:21 pm

1 stop8h 21m

$573

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Tue 10/13

9:04 am-5:56 pm

1 stop7h 52m

Toronto Pearson Intl

Mon 10/19

11:00 am-9:21 pm

1 stop11h 21m

$573
Quickest round-trip

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Thu 9/17

8:55 am-11:49 am

Nonstop1h 54m

Toronto Pearson Intl

Sun 9/20

12:55 pm-2:00 pm

Nonstop2h 05m

$617

St. LouisToronto

STL Lambert-St Louis - YYZ Toronto Pearson Intl

STLYYZ

Lambert-St Louis

Sun 9/27

2:40 pm-5:34 pm

Nonstop1h 54m

Toronto Pearson Intl

Wed 9/30

12:55 pm-2:00 pm

Nonstop2h 05m

$625

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?

Prices are currently low for flights on this route.

Typical prices usually range from $573 to $741.
The lowest price recently found on this route was $365.

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 Tuesday when prices can be found for as low as $776. The most expensive day to fly to Toronto Pearson Intl Airport is Saturday, with ticket prices averaging around $931.

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 morning is the least expensive time of day to depart. momondo users have found prices as low as $712 when looking at flights departing in the morning. Flights at noon are often more expensive with an average ticket price of $1,062.

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 50% 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 August 2026, prices for St. Louis to Toronto Pearson Intl Airport flights are approximately 39% more expensive 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

$141

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 $141. The best round-trip flight deal from St. Louis to Toronto Pearson Intl Airport found on momondo in the last 72 hours is $365.
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
United AirlinesPriceFrom $253Free CancellationRating
7.4
10,135 reviews
Search United Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.1
12,026 reviews
Search American Airlines flights
Air CanadaPriceFrom $272Free CancellationRating
7.1
11,550 reviews
Search Air Canada flights

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

    United Airlines operates around 16 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 $632, 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 10,135 reviews.

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

    Air Canada (7.1/10 from 11,550 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 $606, with deals from around $272 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
Brampton
Niagara-on-the-Lake
Markham
Kitchener
Vaughan
Barrie
Collingwood
Burlington
Oakville
Oshawa
Orillia
Richmond Hill
Peterborough
Cambridge
Whitby
Guelph
Stratford
Brantford

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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