Cheap flights from Canada to St. Louis

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Washington (WAS)
St. Louis (STL)
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How to find the cheapest flight from
Canada to St. Louis (STL)

All the information you need to plan the best null to STL flight in 2021: compare Canada to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
How far in advance should I book a flight from Canada to St. Louis?

Users have found that booking a flight from Canada to St. Louis at least 39 days early can save you up to 26% on average compared to booking a flight this week. If booking 39 days before your flight isn’t an option for you, users have found flights from Canada to St. Louis for as little as C$ 577 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as C$ 688 for flights departing within the next 3 days.

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

Due to multiple factors, expect to potentially pay more when booking in June. For low rates, February can be a great choice for travel to St. Louis. Flights to St. Louis from Canada in February are about C$ 542 on average during February, but can be found for as low as C$ 218.

When is the cheapest time to fly from Canada to St. Louis (CA0 - STL)?

When flying from Canada to St. Louis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap flights from Canada to St. Louis in September, October 2021

The best prices found for Canada to STL flights for September, October
28 Oct - 10 Nov
C$ 340pp
YYZ
Toronto Pearson Intl
Air Canada
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
   
2 STOPS
YYZ
Toronto Pearson Intl
28 Oct - 10 Nov
C$ 342pp
YYZ
Toronto Pearson Intl
Air Canada
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Air Canada
 
1 STOP
YYZ
Toronto Pearson Intl
29 Oct - 10 Nov
C$ 346pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Canada to St. Louis 2021 flight deals

Cheap flights to St. Louis from Canada found for this year
4 Nov - 7 Nov
C$ 291pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
4 Nov - 7 Nov
C$ 310pp
YYZ
Toronto Pearson Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
4 Nov - 7 Nov
C$ 333pp
YYZ
Toronto Pearson Intl
Multiple Airlines
     
3 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

Last minute flights from Canada to St. Louis

Late deals on round-trip flights to St. Louis from Canada, departing today and this week
1 Oct - 31 Oct
C$ 454pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
YYZ
Toronto Pearson Intl
2 Oct - 4 Oct
C$ 474pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl
1 Oct - 31 Oct
C$ 483pp
YYZ
Toronto Pearson Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
YYZ
Toronto Pearson Intl

One-way flights to Lambert-St Louis from Canada

The cheapest one-way flights from Canada to St. Louis
12:30 p.m. - 4:58 p.m.
Delta
1 stop
5h 28m
YUL - STL
Delta
C$ 236
Delta
8:29 a.m. - 3:55 a.m.
American Airlines
1 stop
17h 26m
YVR - STL
American Airlines
C$ 336
9:00 p.m. - 7:35 p.m.
Aeromexico
2 stops
23h 35m
YYZ - STL
Aeromexico
C$ 1,912

Related info for your journey

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

Flight FAQs

From Canada to St. Louis

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

Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Canada to St. Louis. It is only a 20.4 km journey from Lambert-St Louis (STL) to St. Louis’s city centre.

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

Some of the carriers operating flights from Canada to Lambert-St Louis that may be offering flexible cancellation policies are American Airlines, Air Canada, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from Canada to St. Louis for under C$ 300 on Cheapflights?

Yes, there are multiple flights from Canada to St. Louis for under C$ 300. The cheapest flight booked recently is on Multiple Airlines for just C$ 291, but on average you can expect to pay C$ 350.

Are there last-minute flights available from Canada to St. Louis for under C$ 500?

There are currently 20+ open flights from Canada to St. Louis within the next 7 days for less than C$ 500.

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

To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 226. Delta flights start at C$ 236 while deals on American Airlines start at C$ 336 one-way.

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

On average you can expect to pay C$ 422 for a flight from Canada to St. Louis. The cheapest flight overall is C$ 231 while the most popular route, (Toronto Pearson Intl - Lambert-St Louis) is currently priced at C$ 291.

What are the most popular routes from Canada to St. Louis?

While some choose either Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis or Calgary - Lambert-St Louis, Toronto Pearson Intl - Lambert-St Louis is the most popular route from Canada to St. Louis.

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

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

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COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

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

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

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

COVID-19 testing requirements
Visitors from Canada 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 Canada are not required to quarantine after entering Lambert-St Louis.

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

Returning to Canada 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 Canada.

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

Hide COVID Travel Restrictions for St. Louis, MO

Departure points for flights from Canada to St. Louis

Select to see more specific information for flights to St. Louis from all departure points in Canada.

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Canada to St. Louis.
Today's exchange rate
C$ 1 = $0.79
Average temperature for September in St. Louis
28.0 °C
Avg rainfall for September in St. Louis
76.0 mm

Airports servicing St. Louis

Top 6 airlines flying from Canada to Lambert-St Louis

The chart below displays the airlines Cheapflights users travelling from Canada 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
Delta
C$ 171 C$ 509 No cancel fee N/A
Search Delta flights
Air Canada
C$ 183 C$ 513 No cancel fee 67%
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WestJet
C$ 185 C$ 441 No cancel fee 60%
Search WestJet flights
Alaska Airlines
C$ 203 C$ 545 No cancel fee 75%
Search Alaska Airlines flights
United Airlines
C$ 229 C$ 625 No cancel fee 69%
Search United Airlines flights
American Airlines
C$ 241 C$ 499 No cancel fee 71%
Search American Airlines flights
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