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 Lambert-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$ 368 - C$ 553
STL
Temperature
0 - 27 °C
STL
Precipitation
56 - 119 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$ 455

From Toronto (YTO) to Lambert-St Louis

One-way from

C$ 273

One-way flight from Toronto (YTO) to Lambert-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 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$ 529. Cheapflights users have found deals in the month of February for as cheap as C$ 213. The most expensive prices can be found in the month of June.

What is the cheapest day to fly round-trip from Toronto to St. Louis?

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

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$ 562, or C$ 671 for flights within the next 24 hours.

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

Unlike in the evening, when flights are generally more expensive, you can save up to 22% on flights from Toronto to St. Louis by exploring options for tickets at noon.

Cheap flights from Toronto to St. Louis in October, November 2021

The best prices found for YTO to STL flights for October, November
26 Nov - 29 Nov
C$ 389pp
YYZ
Toronto Pearson Intl
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YYZ
Toronto Pearson Intl
19 Nov - 30 Nov
C$ 393pp
YYZ
Toronto Pearson Intl
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
19 Nov - 30 Nov
C$ 398pp
YYZ
Toronto Pearson Intl
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YYZ
Toronto Pearson Intl

Toronto to St. Louis 2021 flight deals

Cheap flights to St. Louis from Toronto found for this year
8 Dec - 12 Dec
C$ 389pp
YYZ
Toronto Pearson Intl
American Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
19 Nov - 30 Nov
C$ 393pp
YYZ
Toronto Pearson Intl
United Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
United Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
19 Nov - 30 Nov
C$ 398pp
YYZ
Toronto Pearson Intl
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YYZ
Toronto Pearson Intl

Last minute flights from Toronto to St. Louis

Late deals on round-trip flights to St. Louis from Toronto, departing today and this week
3 Nov - 6 Nov
C$ 566pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
ANA
 
1 STOP
YYZ
Toronto Pearson Intl
3 Nov - 5 Nov
C$ 570pp
YYZ
Toronto Pearson Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
3 Nov - 6 Nov
C$ 571pp
YYZ
Toronto Pearson Intl
Air Canada
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YYZ
Toronto Pearson Intl

One-way flights to Lambert-St Louis from Toronto

The cheapest one-way flights from Toronto to St. Louis
2:59 a.m. - 9:45 a.m.
Delta
1 stop
7h 46m
YYZ - STL
Delta
C$ 273
Delta
2:30 a.m. - 7:16 a.m.
American Airlines
1 stop
5h 46m
YYZ - STL
American Airlines
C$ 277
9:30 a.m. - 2:25 p.m.
United Airlines
2 stops
5h 55m
YYZ - STL
United Airlines
C$ 366
United Airlines

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 is 1 flight 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$ 400 on Cheapflights?

Yes, there are multiple flights from Toronto to St. Louis for under C$ 400. The cheapest flight booked recently is on Multiple Airlines for just C$ 339, but on average you can expect to pay C$ 444.

Are there last-minute flights available from Toronto to St. Louis for under C$ 600?

There are currently 7+ open flights from Toronto to St. Louis within the next 7 days for less than C$ 600.

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

Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at C$ 389. Additional round-trip tickets that might be worth considering are offered by United Airlines and Air Canada, with the lowest prices starting at C$ 393 and C$ 398, respectively. American Airlines is currently priced 26% below the average price you’ll pay for this route.

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

For one-way options, check prices for Delta. According to our data, you can fly for as low as C$ 226. Users have also found prices from C$ 271 and C$ 279 on American Airlines and Air Canada, respectively.

What are the cheapest flights from Toronto to St. Louis?

While on average a flight from Toronto to St. Louis is generally C$ 505, our data shows the cheapest flight currently is C$ 256. When looking at the most popular route, (Toronto Pearson Intl - Lambert-St Louis), you can expect to pay C$ 339 for that flight.

What are the most popular airlines that fly from Toronto to St. Louis?

Before booking your flight from Toronto to St. Louis check out the most popular airlines for this route: Major Airline, American Airlines or Air Canada.

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from Toronto?

Information is based on travel restrictions from Toronto to Lambert-St Louis

Most visitors from Toronto need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Toronto must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Toronto are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to Toronto from St. Louis?

Returning to Toronto from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) test taken 72 hours before departing to Toronto.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Toronto.

Hide COVID Travel Restrictions for St. Louis, MO

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 = $0.81
Average temperature for October in St. Louis
22.0 °C
Avg rainfall for October in St. Louis
71.0 mm

Airports servicing Toronto

Toronto Island (YTZ)
Hamilton (YHM)
Kitchener-Waterloo (YKF)

Airports servicing St. Louis

Top 5 airlines flying from Toronto to Lambert-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
American Airlines
C$ 239 C$ 537 No cancel fee 71%
Search American Airlines flights
Delta
C$ 240 C$ 600 No cancel fee N/A
Search Delta flights
WestJet
C$ 246 C$ 401 No cancel fee 60%
Search WestJet flights
Air Canada
C$ 496 C$ 715 No cancel fee 67%
Search Air Canada flights
United Airlines
C$ 511 C$ 707 No cancel fee 69%
Search United Airlines flights

Hourly flight availability from Toronto to St. Louis

See what time of day planes typically take off from Toronto towards St. Louis.
Afternoon Noon to 6 PM 100% of flight departures
Early morning Midnight to 6 AM 0% of flight departures
Morning 6 AM to noon 0% of flight departures
Evening 6 PM to midnight 0% of flight departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Toronto to St. Louis
See how many times per day planes take to the skies headed from Toronto to St. Louis.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
1 daily flight
Wednesday
1 daily flight
Thursday
1 daily flight
Friday
1 daily flight
Saturday
1 daily flight
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