Cheap flights from Calgary to St Louis

Round-trip
Economy
Calgary (YYC)
St. Louis (STL)
Depart
Return
Any month
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The best prices from Calgary to St Louis are usually found in April or June, booked 34 days in advance, depart on a Wednesday or Saturday and return on a Monday

How to find the cheapest flight from
Calgary (YYC) to St Louis (STL)

All the information you need to plan the best YYC to STL flight in 2021: compare Calgary to St Louis flight prices with the expected peak season, weather and rainfall in St Louis.
YYC - STL
Price
C$ 345 - C$ 605
STL
Temperature
7 - 32 °C
STL
Rainfall
57 - 130 mm

Popular in

September

High demand for flights, 30% potential price rise

Cheapest in

April

Best time to find cheap flights, 19% potential price drop

Average price

C$ 397

Average for round-trip flights in May 2021

Round-trip from

C$ 345

From Calgary 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 Calgary to St Louis?

Travellers have found that booking a Tuesday departure is the best way to save up to 112% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.

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

Users have found that booking a flight from Calgary 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 Calgary to St Louis for as little as C$ 551 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$ 657 for flights departing within the next 3 days.

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

Flights from Calgary to St Louis lean towards being more expensive in June. Prices are generally better when you fly from Calgary to St Louis in February, with the cheapest ticket starting at C$ 208.

When is the cheapest time to fly from Calgary to St Louis (YYC - STL)?

It’s optimal to fly from Calgary to St Louis at noon. By choosing this option you can save up to 62% on the cost of your flight, compared to a flight in the afternoon.

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

The best prices found for YYC to STL flights for May, June
3 Jun - 11 Jun
C$ 402pp
YYC
Calgary
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYC
Calgary
13 Jun - 14 Jun
C$ 511pp
YYC
Calgary
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYC
Calgary
3 Jun - 11 Jun
C$ 529pp
YYC
Calgary
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
   
2 STOPS
YYC
Calgary

Calgary to St Louis 2021 flight deals

Cheap flights to St Louis from Calgary found for this year
2 Nov - 3 Nov
C$ 370pp
YYC
Calgary
American Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
YYC
Calgary
8 Oct - 12 Oct
C$ 378pp
YYC
Calgary
Delta
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
YYC
Calgary
7 Oct - 12 Oct
C$ 384pp
YYC
Calgary
WestJet
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
WestJet
   
2 STOPS
YYC
Calgary

Related info for your journey

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

Flight FAQs

From Calgary to St Louis

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

Yes, there are multiple flights from Calgary to St Louis for under C$ 484. The cheapest flight booked recently is on American Airlines for just C$ 370, but on average you can expect to pay C$ 763.

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

Due to the rapidly changing circumstances due to COVID-19, airlines like United Airlines, American Airlines, and WestJet flying from Calgary to Lambert-St Louis have implemented new flexible cancellation policies.

Are there direct flights from Calgary to St Louis for under C$ 363 on Cheapflights?

There are no direct flights from Calgary to St Louis, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

How popular is this flight route?

Within the past month, 79 users have taken a look at flights from Calgary to Lambert-St Louis.

Does it rain more in Calgary or St Louis?

The rainfall in Calgary is generally more than the rainfall in St Louis. This will continue over the next 18 days.

Is Calgary 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 Calgary.

How long is the flight from Calgary to St Louis?

Departing from Calgary to St Louis will take you 6h 02m. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

Cheapflights users have booked flights from Calgary to St Louis round-trip from C$ 371. Other airlines that can offer you cheap pricing are Delta, from C$ 378, and WestJet, from C$ 384. American Airlines is 12% cheaper than the average price of flights available within the next 90 days to this destination.

Destination information for St Louis

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

Airports servicing Calgary

Airports servicing St. Louis

Top 5 airlines flying from Calgary to St Louis

The chart below displays the airlines Cheapflights users travelling from Calgary 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$ 252 C$ 346 No cancel fee 60%
Search WestJet flights
Delta
C$ 159 C$ 384 No cancel fee N/A
Search Delta flights
Air Canada
C$ 280 C$ 411 No cancel fee 67%
Search Air Canada flights
American Airlines
C$ 218 C$ 441 No cancel fee 71%
Search American Airlines flights
United Airlines
C$ 269 C$ 601 No cancel fee 69%
Search United Airlines flights
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