Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Toronto to St. Louis from $157

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Toronto to St. Louis departing on 10/30. 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
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Toronto to St. Louis

Cheap round-trip flights

Multiple Airlines Logo
1:35 pm - 10:02 amYYZ-STL
21h 27m1 stop
Multiple Airlines Logo
10:57 am - 2:05 pmSTL-YYZ
26h 08m1 stop
$266Multiple Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
Multiple Airlines Logo
9:45 am - 1:57 pmYYZ-STL
29h 12m1 stop
Multiple Airlines Logo
6:22 pm - 2:40 pmSTL-YYZ
43h 18m2 stops
$287Multiple Airlines
Find Deal
Thu, Oct 30 - Thu, Nov 6
Multiple Airlines Logo
1:35 pm - 10:02 amYYZ-STL
21h 27m1 stop
Multiple Airlines Logo
11:32 am - 2:05 pmSTL-YYZ
25h 33m2 stops
$292Multiple Airlines
Find Deal
Sat, Oct 18 - Thu, Oct 23
Multiple Airlines Logo
6:30 am - 10:02 amYYZ-STL
28h 32m1 stop
Multiple Airlines Logo
7:52 pm - 7:58 pmSTL-YYZ
23h 06m2 stops
$297Multiple Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
American Airlines Logo
1:15 pm - 11:54 pmYYZ-STL
11h 39m1 stop
American Airlines Logo
6:00 am - 2:30 pmSTL-YYZ
7h 30m1 stop
$377American Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
Air Canada Logo
2:15 pm - 3:18 pmYYZ-STL
2h 03mnonstop
Air Canada Logo
4:05 pm - 7:06 pmSTL-YYZ
2h 01mnonstop
$383Air Canada
Find Deal
Sat, Oct 25 - Sun, Nov 2
American Airlines Logo
1:15 pm - 11:54 pmYYZ-STL
11h 39m1 stop
American Airlines Logo
6:00 am - 4:34 pmSTL-YYZ
9h 34m1 stop
$390American Airlines
Find Deal
Wed, Oct 15 - Tue, Oct 21
Air Canada Logo
2:15 pm - 3:18 pmYYZ-STL
2h 03mnonstop
Air Canada Logo
4:05 pm - 7:00 pmSTL-YYZ
1h 55mnonstop
$401Air Canada
Find Deal
Wed, Oct 15 - Wed, Oct 22
Delta Logo
12:25 pm - 4:07 pmYYZ-STL
4h 42m1 stop
Delta Logo
6:09 pm - 11:05 pmSTL-YYZ
3h 56m1 stop
$424Delta
Find Deal
Tue, Nov 25 - Sun, Nov 30
United Airlines Logo
11:00 am - 2:27 pmYYZ-STL
4h 27m1 stop
United Airlines Logo
5:28 pm - 11:58 pmSTL-YYZ
5h 30m1 stop
$427United Airlines
Find Deal
Sat, Oct 25 - Sat, Oct 25

American Airlines flights from Toronto to St. Louis

Our best American Airlines deals on Toronto to St. Louis flight tickets
American Airlines
Oct 15
YYZ1:15 pmToronto Pearson Intl
11h 39m
1 stop
STL11:54 pmLambert-St Louis
Oct 21
STL6:00 amLambert-St Louis
7h 30m
1 stop
YYZ2:30 pmToronto Pearson Intl
$377
Find similar
American Airlines
Oct 15
YYZ1:15 pmToronto Pearson Intl
11h 39m
1 stop
STL11:54 pmLambert-St Louis
Oct 21
STL6:00 amLambert-St Louis
9h 34m
1 stop
YYZ4:34 pmToronto Pearson Intl
$390
Find similar
American Airlines
Oct 25
YYZ3:10 pmToronto Pearson Intl
7h 56m
1 stop
STL10:06 pmLambert-St Louis
Nov 2
STL5:00 amLambert-St Louis
3h 52m
1 stop
YYZ9:52 amToronto Pearson Intl
$399
Find similar

Air Canada flights from Toronto to St. Louis

Our best Air Canada deals on Toronto to St. Louis flight tickets
Air Canada
Oct 25
YYZ2:15 pmToronto Pearson Intl
2h 03m
STL3:18 pmLambert-St Louis
Nov 2
STL4:05 pmLambert-St Louis
2h 01m
YYZ7:06 pmToronto Pearson Intl
$383
Find similar
Air Canada
Oct 15
YYZ2:15 pmToronto Pearson Intl
2h 03m
STL3:18 pmLambert-St Louis
Oct 22
STL4:05 pmLambert-St Louis
1h 55m
YYZ7:00 pmToronto Pearson Intl
$401
Find similar
Air Canada
Oct 4
YYZ3:00 pmToronto Pearson Intl
5h 57m
1 stop
STL7:57 pmLambert-St Louis
Oct 12
STL4:05 pmLambert-St Louis
1h 55m
YYZ7:00 pmToronto Pearson Intl
$403
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Toronto to St. Louis 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 September 17, 2025.
Use the filters below to find and compare flights from Toronto to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/18

1:35 pm-10:02 am

1 stop21h 27m

Lambert-St Louis

Thu 10/23

10:57 am-2:05 pm

1 stop26h 08m

$266

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 10/30

9:45 am-1:57 pm

1 stop29h 12m

Lambert-St Louis

Thu 11/6

6:22 pm-2:40 pm

2 stops43h 18m

$287

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/18

1:35 pm-10:02 am

1 stop21h 27m

Lambert-St Louis

Thu 10/23

11:32 am-2:05 pm

2 stops25h 33m

$292

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 10/15

6:30 am-10:02 am

1 stop28h 32m

Lambert-St Louis

Wed 10/22

7:52 pm-7:58 pm

2 stops23h 06m

$297

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 10/15

1:15 pm-11:54 pm

1 stop11h 39m

Lambert-St Louis

Tue 10/21

6:00 am-2:30 pm

1 stop7h 30m

$377

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/25

2:15 pm-3:18 pm

Nonstop2h 03m

Lambert-St Louis

Sun 11/2

4:05 pm-7:06 pm

Nonstop2h 01m

$383

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 10/15

1:15 pm-11:54 pm

1 stop11h 39m

Lambert-St Louis

Tue 10/21

6:00 am-4:34 pm

1 stop9h 34m

$390

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Wed 10/15

2:15 pm-3:18 pm

Nonstop2h 03m

Lambert-St Louis

Wed 10/22

4:05 pm-7:00 pm

Nonstop1h 55m

$401

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 11/25

12:25 pm-4:07 pm

1 stop4h 42m

Lambert-St Louis

Sun 11/30

6:09 pm-11:05 pm

1 stop3h 56m

$424

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 10/25

11:00 am-2:27 pm

1 stop4h 27m

Lambert-St Louis

Sat 10/25

5:28 pm-11:58 pm

1 stop5h 30m

$427

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to St. Louis from

How to get the cheapest flight ticket from Toronto to St. Louis

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 Toronto and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, June is the cheapest month to fly from Toronto to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $372. The month of August is another great option to travel to St. Louis, with average flight prices from Toronto averaging around $397.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Saturday when prices can be found for as low as $405. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $541. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Toronto in the morning is the least expensive time of day to depart. momondo users have found prices as low as $326 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $480 per ticket.

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

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

How far in advance should I book a flight to St. Louis?

You are more likely to see cheaper flights to St. Louis from Toronto when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $493 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from Toronto for as low as $360 on momondo.

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

There are 3 cabin classes available to choose from on Toronto to Lambert-St Louis 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 Toronto to St. Louis flights?

You could potentially save up to 2% on your flight if you consider stops on a Toronto to St. Louis flight.

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

As of September 2025, prices for Toronto to St. Louis flights are approximately 3% cheaper when compared to flights at the same time last year.

When to book flights from Toronto to St. Louis

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

Cheap Toronto to St. Louis (YTO to STL) flight deals and tips

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

Best Price Found

$283

Fastest flight time

2h 03m

Direct flights

Every day

Airports in St. Louis

1 airport
The best one-way flight to St. Louis from Toronto in the past 72 hours is $283. The best round-trip flight deal from Toronto to St. Louis found on momondo in the last 72 hours is $405.
The fastest flight from Toronto to St. Louis takes 2h 03m
Direct flights go from Toronto to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)
Search flight deals

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

    Lambert-St Louis is 659.9 mi away from Toronto. A reasonable flight in good conditions will take 2h 03m.

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

    Prices for flights from Toronto to Lambert-St Louis Airport are refreshed on a daily basis.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Toronto to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

Best airlines flying from Toronto to St. Louis

Compare and see reviews for airlines that fly from Toronto to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $324Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

  • Air Canada Flights From Toronto to St. Louis

    Air Canada flight deals from Toronto to St. Louis start from $324 round-trip. Over the 14 Air Canada flights for this route in a normal week, average airfare is usually $496 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
Fenton
Collinsville
Wentzville
Alton
St. Peters
Farmington
Festus
Glencoe
Clayton
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Toronto to St. Louis. momondo saves you time and could save you money on your trip.

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

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

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

Once all potential Toronto to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Toronto to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your St. Louis 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 10/17
Fri 10/24
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States