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Cheap flights from Toronto to St. Louis from $176

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 4/4. 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 Toronto to St. Louis

Cheap round-trip flights

These are some of the best round-trip flight deals from Toronto to St. Louis that have been recently found on momondo from popular airlines, departing in the coming months.
7:00 pm - 7:58 amYYZ-STL
13h 58m1 stop
5:24 pm - 1:55 pmSTL-YYZ
19h 31m1 stop
Wed, Mar 19 - Mon, Mar 24
7:10 am - 11:43 pmYYZ-STL
17h 33m1 stop
5:38 pm - 11:42 amSTL-YYZ
17h 04m1 stop
Tue, Mar 4 - Tue, Mar 11
2:55 pm - 2:42 pmYYZ-STL
24h 47m1 stop
9:50 am - 10:35 pmSTL-YYZ
35h 45m3 stops
Mon, Mar 3 - Mon, Mar 10
2:00 pm - 8:01 pmYYZ-STL
7h 01m1 stop
1:30 pm - 9:39 pmSTL-YYZ
7h 09m1 stop
$359Air Canada
Find Deal
Sun, May 25 - Sun, Jun 1
1:50 pm - 3:06 pmYYZ-STL
2h 16mnonstop
8:00 am - 3:45 pmSTL-YYZ
6h 45m1 stop
$371Air Canada
Find Deal
Wed, Mar 19 - Mon, Mar 24
6:14 am - 8:51 pmYYZ-STL
15h 37m1 stop
3:12 pm - 11:14 pmSTL-YYZ
7h 02m1 stop
$395WestJet
Find Deal
Fri, Apr 11 - Fri, Apr 18
11:30 am - 10:18 pmYYZ-STL
11h 48m1 stop
12:00 pm - 11:25 pmSTL-YYZ
10h 25m1 stop
$418American Airlines
Find Deal
Tue, Apr 1 - Sat, Apr 5
6:15 am - 12:20 pmYYZ-STL
7h 05m2 stops
6:30 am - 12:15 pmSTL-YYZ
4h 45m1 stop
$426United Airlines
Find Deal
Tue, Apr 1 - Sat, Apr 5
11:00 am - 2:23 pmYYZ-STL
4h 23m1 stop
3:50 pm - 6:45 pmSTL-YYZ
1h 55mnonstop
$427United Airlines
Find Deal
Thu, Mar 27 - Sat, Mar 29
9:30 am - 4:52 pmYYZ-STL
8h 22m2 stops
11:23 am - 6:12 amSTL-YYZ
17h 49m2 stops
$478WestJet
Find Deal
Tue, Apr 22 - Tue, May 6

Air Canada flights from Toronto to St. Louis

Our best Air Canada deals on Toronto to St. Louis flight tickets
Air Canada
May 25
YYZ2:00 pmToronto Pearson Intl
7h 01m
1 stop
STL8:01 pmLambert-St Louis
Jun 1
STL1:30 pmLambert-St Louis
7h 09m
1 stop
YYZ9:39 pmToronto Pearson Intl
Air Canada
Mar 19
YYZ1:50 pmToronto Pearson Intl
2h 16m
STL3:06 pmLambert-St Louis
Mar 24
STL8:00 amLambert-St Louis
6h 45m
1 stop
YYZ3:45 pmToronto Pearson Intl
Air Canada
Mar 19
YYZ12:20 pmToronto Pearson Intl
4h 11m
1 stop
STL3:31 pmLambert-St Louis
Mar 23
STL5:33 pmLambert-St Louis
5h 26m
1 stop
YYZ11:59 pmToronto Pearson Intl

WestJet flights from Toronto to St. Louis

Our best WestJet deals on Toronto to St. Louis flight tickets
WestJet
Apr 11
YYZ6:14 amToronto Pearson Intl
15h 37m
1 stop
STL8:51 pmLambert-St Louis
Apr 18
STL3:12 pmLambert-St Louis
7h 02m
1 stop
YYZ11:14 pmToronto Pearson Intl
WestJet
Apr 22
YYZ9:30 amToronto Pearson Intl
8h 22m
2 stops
STL4:52 pmLambert-St Louis
May 6
STL11:23 amLambert-St Louis
17h 49m
2 stops
YYZ6:12 amToronto Pearson Intl
WestJet
Jun 9
YYZ8:00 pmToronto Pearson Intl
17h 24m
2 stops
STL12:24 pmLambert-St Louis
Jun 10
STL3:30 pmLambert-St Louis
6h 27m
1 stop
YYZ10:57 pmToronto Pearson Intl

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, May 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 $437. The month of April is another great option to travel to St. Louis, with average flight prices from Toronto averaging around $450.

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 Friday when prices can be found for as low as $281. 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 $554. 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 afternoon is the least expensive time of day to depart. momondo users have found prices as low as $288 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $450 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 24 weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $498 when searching 24 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 $313 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.

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

As of February 2025, prices for Toronto to St. Louis flights are approximately 46% more expensive 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

$176

Fastest flight time

2h 06m

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 $176. The best round-trip flight deal from Toronto to St. Louis found on momondo in the last 72 hours is $276.
The fastest flight from Toronto to St. Louis takes 2h 06m
Direct flights go from Toronto to St. Louis every day.
There is 1 airport near St. Louis: Lambert-St Louis (STL)

  • 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 06m.

  • 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 $296Free CancellationRating
7.0
8,748 reviews
Search Air Canada flights
  • Air Canada Flights From Toronto to St. Louis

    Air Canada flight deals from Toronto to St. Louis start from $296 round-trip. Over the 3 Air Canada flights for this route in a normal week, average airfare is usually $450 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
Collinsville
Florissant
Maryland Heights
Hermann
Fairview Heights
Fenton
O'Fallon
Farmington
Alton
St. Peters
Wentzville
Eureka
Festus
Glencoe
Clayton
Edwardsville
Litchfield
Grafton

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.


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