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Cheap flights from Toronto to St. Louis from C$ 258

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 14/5. 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 Toronto to St. Louis

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Toronto to St. Louis.
 Logo
4:00 p.m. - 12:06 a.m.YYZ-STL
9h 06m1 stop
 Logo
9:55 p.m. - 8:56 p.m.STL-YYZ
22h 01m2 stops
C$ 368
Find Deal
Wed, 7 May - Mon, 12 May
 Logo
6:30 a.m. - 9:15 a.m.YYZ-STL
27h 45m1 stop
 Logo
5:45 p.m. - 11:47 p.m.STL-YYZ
29h 02m1 stop
C$ 473
Find Deal
Sat, 10 May - Mon, 12 May
 Logo
1:30 p.m. - 5:15 p.m.YYZ-STL
28h 45m1 stop
 Logo
10:10 a.m. - 9:00 p.m.STL-YYZ
9h 50m1 stop
C$ 474
Find Deal
Mon, 5 May - Thu, 8 May
Air Canada Logo
6:30 p.m. - 7:43 p.m.YYZ-STL
2h 13mdirect
Air Canada Logo
7:30 a.m. - 10:25 a.m.STL-YYZ
1h 55mdirect
C$ 490Air Canada
Find Deal
Sat, 10 May - Mon, 12 May
Air Canada Logo
11:30 a.m. - 12:36 p.m.YYZ-STL
2h 06mdirect
Air Canada Logo
7:30 a.m. - 10:25 a.m.STL-YYZ
1h 55mdirect
C$ 492Air Canada
Find Deal
Mon, 5 May - Thu, 8 May
United Airlines Logo
11:30 a.m. - 12:36 p.m.YYZ-STL
2h 06mdirect
United Airlines Logo
7:30 a.m. - 10:25 a.m.STL-YYZ
1h 55mdirect
C$ 521United Airlines
Find Deal
Thu, 8 May - Sun, 11 May
United Airlines Logo
10:15 a.m. - 11:58 p.m.YYZ-STL
14h 43m1 stop
United Airlines Logo
8:00 a.m. - 1:42 p.m.STL-YYZ
4h 42m1 stop
C$ 530United Airlines
Find Deal
Thu, 8 May - Sun, 11 May
American Airlines Logo
11:45 a.m. - 9:26 p.m.YYZ-STL
10h 41m1 stop
American Airlines Logo
10:25 a.m. - 4:44 p.m.STL-YYZ
5h 19m1 stop
C$ 594American Airlines
Find Deal
Thu, 15 May - Tue, 20 May
WestJet Logo
10:20 a.m. - 8:48 p.m.YYZ-STL
11h 28m1 stop
WestJet Logo
5:40 p.m. - 10:20 a.m.STL-YYZ
15h 40m1 stop
C$ 613WestJet
Find Deal
Mon, 12 May - Mon, 19 May
WestJet Logo
8:00 a.m. - 11:26 p.m.YYZ-STL
16h 26m2 stops
WestJet Logo
6:00 a.m. - 6:04 p.m.STL-YYZ
11h 04m2 stops
C$ 643WestJet
Find Deal
Thu, 8 May - Mon, 12 May

United Airlines flights from Toronto to St. Louis

Our best United Airlines deals on Toronto to St. Louis flight tickets
United Airlines
8 May
YYZ11:30 a.m.Toronto Pearson Intl
2h 06m
STL12:36 p.m.Lambert-St Louis
11 May
STL7:30 a.m.Lambert-St Louis
1h 55m
YYZ10:25 a.m.Toronto Pearson Intl
United Airlines
8 May
YYZ10:15 a.m.Toronto Pearson Intl
14h 43m
1 stop
STL11:58 p.m.Lambert-St Louis
11 May
STL8:00 a.m.Lambert-St Louis
4h 42m
1 stop
YYZ1:42 p.m.Toronto Pearson Intl
United Airlines
10 Jun
YYZ11:00 a.m.Toronto Pearson Intl
5h 30m
1 stop
STL3:30 p.m.Lambert-St Louis
24 Jun
STL6:30 a.m.Lambert-St Louis
6h 49m
2 stops
YYZ2:19 p.m.Toronto Pearson Intl

WestJet flights from Toronto to St. Louis

Our best WestJet deals on Toronto to St. Louis flight tickets
WestJet
12 May
YYZ10:20 a.m.Toronto Pearson Intl
11h 28m
1 stop
STL8:48 p.m.Lambert-St Louis
19 May
STL5:40 p.m.Lambert-St Louis
15h 40m
1 stop
YYZ10:20 a.m.Toronto Pearson Intl
WestJet
8 May
YYZ8:00 a.m.Toronto Pearson Intl
16h 26m
2 stops
STL11:26 p.m.Lambert-St Louis
12 May
STL6:00 a.m.Lambert-St Louis
11h 04m
2 stops
YYZ6:04 p.m.Toronto Pearson Intl
WestJet
15 May
YYZ2:30 p.m.Toronto Pearson Intl
7h 18m
1 stop
STL8:48 p.m.Lambert-St Louis
20 May
STL6:00 a.m.Lambert-St Louis
11h 04m
2 stops
YYZ6:04 p.m.Toronto 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?

The month of November is, on average, the cheapest month to fly to St. Louis from Toronto, with most prices found around C$ 643. If you don’t want to visit St. Louis in November, then you should wait until October to fly from Toronto, when ticket prices are also cheap, with an average price of C$ 645.

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

Our data shows that Tuesday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 632. The most expensive day to fly to St. Louis is Saturday, with ticket prices averaging around C$ 798.

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

The cheapest time of day to fly to St. Louis is in the evening when flights can be purchased for as low as C$ 0. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 695 on average. Flights to St. Louis from Toronto at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 C$ 690 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 C$ 434 on momondo.

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

There are 1 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 April 2025, prices for Toronto to St. Louis flights are approximately 80% 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

C$ 258

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 C$ 258. The best round-trip flight deal from Toronto to St. Louis found on momondo in the last 72 hours is C$ 368.
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?

    Toronto and Lambert-St Louis are 1062.1 km apart from one another. By plane, this route typically takes 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 a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to 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 C$ 513Free CancellationRating
7.0
9,118 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 566Free CancellationRating
7.4
8,656 reviews
Search United Airlines flights
WestJetPriceFrom C$ 612Free CancellationRating
7.2
2,805 reviews
Search WestJet flights
  • United Airlines Flights From Toronto to St. Louis

    Across 6 United Airlines flights from Toronto to St. Louis this week, the average price was C$ 493, with the best United Airlines deals starting from C$ 408 round-trip. 8,656 users have rated United Airlines on momondo, with an average score of 7.4/10.

  • Air Canada Flights From Toronto to St. Louis

    Another popular option for Toronto to St. Louis flights is Air Canada (7.0/10, 9,118 ratings). Air Canada flies from Toronto to St. Louis around 6 times per week, with deals starting from C$ 370 round-trip and rising to an average price of around C$ 500.


Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
Chesterfield
Collinsville
Litchfield

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to St. Louis from Toronto.

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

Yes. momondo allows you to filter the results for Toronto to St. Louis flights to just show those with flexible booking policies.

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

Once you have performed a search for Toronto to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Price alerts on flights to St. Louis from Toronto are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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