Cheap flights from Toronto to St Louis

Round-trip
Economy
Toronto (YTO)
St. Louis (STL)
Depart
Return
Any month
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The best prices from Toronto to St Louis are usually found in February or November, booked 39 days in advance, depart on a Tuesday or Wednesday and return on a Friday

How to find the cheapest flight from
Toronto (YTO) to St Louis (STL)

All the information you need to plan the best YTO to STL flight in 2021: compare Toronto to St Louis flight prices with the expected peak season, weather and rainfall in St Louis.
YTO - STL
Price
C$ 445 - C$ 669
STL
Temperature
7 - 32 °C
STL
Rainfall
57 - 130 mm

Popular in

June

High demand for flights, 23% potential price rise

Cheapest in

February

Best time to find cheap flights, 14% potential price drop

Round-trip from

C$ 445

From Toronto to St Louis

One-way from

C$ 266

One-way flight from Toronto to St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Toronto to St Louis?

Sunday flights are generally found to be more expensive for flights from Toronto to St Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St Louis.

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

Travellers have found it’s best to book a flight 39 days in advance to save up to 26% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 39 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Toronto to St Louis 1-2 weeks in advance for as low as C$ 551, or C$ 657 for flights within the next 24 hours.

What is the cheapest month to fly from Toronto to St Louis?

February can be a great time to fly to St Louis from Toronto with a flight ticket averaging about C$ 518. Cheapflights users have found deals in the month of February for as cheap as C$ 208. The most expensive prices can be found in the month of June.

When is the cheapest time to fly from Toronto to St Louis (YTO - STL)?

One of the essential ways to save on airfare from Toronto to St Louis is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 22% on airfare.

Cheap flights from Toronto to St Louis in May, June 2021

The best prices found for YTO to STL flights for May, June
18 Jun - 20 Jun
C$ 376pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
1 Jun - 4 Jun
C$ 426pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
18 Jun - 20 Jun
C$ 470pp
YYZ
Toronto Pearson Intl
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Toronto to St Louis 2021 flight deals

Cheap flights to St Louis from Toronto found for this year
30 Oct - 3 Nov
C$ 374pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
20 Jul - 11 Aug
C$ 375pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
18 Jun - 20 Jun
C$ 376pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Direct flights to St Louis from Toronto

Save time with Toronto to St Louis direct flight deals
30 Oct - 3 Nov
C$ 482pp
YYZ
Toronto Pearson Intl
Air Canada
Direct
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
Direct
YYZ
Toronto Pearson Intl
30 Oct - 3 Nov
C$ 505pp
YYZ
Toronto Pearson Intl
United Airlines
Direct
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
Direct
YYZ
Toronto Pearson Intl

One-way flights to St Louis from Toronto

The cheapest one-way flights from Toronto to St Louis
4:00 p.m. - 1:49 p.m.
WestJet
2 stops
22h 49m
YYZ - STL
WestJet
C$ 267
12:59 p.m. - 4:29 p.m.
Delta
1 stop
4h 30m
YYZ - STL
Delta
C$ 312
Delta
5:05 a.m. - 3:19 p.m.
Air Canada
2 stops
11h 14m
YYZ - STL
Air Canada
C$ 362
Air Canada

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Toronto</span> to <span class="emphasized">St Louis</span> flights.

Flight FAQs

From Toronto to St Louis

What airport do you fly into for flights to St. Louis from Toronto?

If you book a flight to St. Louis from Toronto, you will be flying to Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 20.4 km from the centre of St. Louis. There are 0 flights from Toronto to Lambert-St Louis per day from 6 different airlines.

Which airlines flying from Toronto to Lambert-St Louis have flexible cancellations due to COVID-19?

American Airlines, Air Canada, and United Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

Can I find flights from Toronto to St Louis for under C$ 484 on Cheapflights?

Yes, there are multiple flights from Toronto to St Louis for under C$ 484. The cheapest flight booked recently is on American Airlines for just C$ 374, but on average you can expect to pay C$ 974.

Are there direct flights from Toronto to St Louis for under C$ 484 on Cheapflights?

Cheapflights has 2 direct flights from Toronto to St Louis under C$ 484. A good price for a direct flight from Toronto to St Louis is less than C$ 493.

Is Toronto weather warmer or cooler than St Louis?

With an average temperature of 32 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in St Louis are hotter than in Toronto.

How long is the flight from Toronto to St Louis?

For as low as C$ 482, Air Canada can have you in St Louis from Toronto in 2h 07m. This flight may include one or multiple stops.

What are the cheapest airlines to flying from Toronto to St Louis round-trip?

According to our current data, American Airlines (C$ 375), Air Canada (C$ 482), and United Airlines (C$ 505) offers the cheapest pricing from Toronto to St Louis. American Airlines is priced at 27% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Toronto to St Louis one-way?

C$ 220 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and WestJet, with prices starting from C$ 240 and C$ 267, respectively.

Alternative routes for Toronto to St Louis

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for St Louis

Things to know before you go - useful duration and weather info for your trip from Toronto to St Louis.
Today's exchange rate
C$ 1 = $0.83
Flight duration
2h 03m
Average temperature for May in St Louis
26.0 °C
Avg rainfall for May in St Louis
130.0 mm

Airports servicing Toronto

Billy Bishop Toronto City Airport (YTZ)
Hamilton (YHM)
Kitchener (YKF)

Airports servicing St. Louis

Top 5 airlines flying from Toronto to St Louis

The chart below displays the airlines Cheapflights users travelling from Toronto to St Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
WestJet
C$ 199 C$ 325 No cancel fee 60%
Search WestJet flights
American Airlines
C$ 193 C$ 434 No cancel fee 71%
Search American Airlines flights
Delta
C$ 194 C$ 486 No cancel fee N/A
Search Delta flights
United Airlines
C$ 413 C$ 572 No cancel fee 69%
Search United Airlines flights
Air Canada
C$ 402 C$ 578 No cancel fee 67%
Search Air Canada flights
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