Cheap flights from Calgary to St. Louis from C$ 290

This is the cheapest one-way flight price, found on 20/9. Prices may vary by date and flight preferences.
YYC — STL
26 Sep — 3 Oct1
1 adult
Economy
From?
To?
Tue 26/9
Tue 3/10

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 2023: compare Calgary to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.

Popular in

August

Cheapest in

March

Round-trip from

C$ 723

One-way from

C$ 290
High demand for flights, 16% potential price rise
Best time to find cheap flights, 21% potential price drop
From Calgary to Lambert-St Louis
One-way flight from Calgary to Lambert-St Louis

YYC - STL

Price

C$ 538 - C$ 906

STL

Temperature

0 - 27 °C

STL

Rainfall

56 - 119 mm

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

It’s generally more expensive to depart on a Sunday, if you have to leave on this day you can still search on Cheapflights to find great options that meet your needs.

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 29 days early can save you up to 38% on average compared to booking a flight this week. If booking 29 days before your flight isn’t an option for you, users have found flights from Calgary to St. Louis for as little as C$ 819 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$ 921 for flights departing within the next 3 days.

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

The best pricing can be found in the month of March. Prices to St. Louis from Calgary average C$ 722. You can even find prices in March for less than C$ 722, as users have found deals to St. Louis from as low as C$ 466. The month of August appears to be one of the more expensive times to travel to St. Louis from Calgary. Flying in the targeted month can save you up to 19%.

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

It’s typically best to fly out from Calgary to St. Louis at noon. Doing so could potentially save you 16% on the flight price compared to flying in the morning, which is usually more expensive.

One-way flights to St. Louis from Calgary

The cheapest one-way flights from Calgary to St. Louis

Reviews of airlines servicing St. Louis

Delta
7.9
Good
3,018 reviews

Comfort

7.9

Boarding

8.0

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 10

flight was completely cancelled. had to rent a car and drive 7 hours to get home.

Delta
7.9
Good
3,018 reviews
Delta
7.9
Good
3,018 reviews

Comfort

7.9

Boarding

8.0

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 10

flight was completely cancelled. had to rent a car and drive 7 hours to get home.

WestJet
7.2
Good
916 reviews
Delta
7.9
Good
3,018 reviews

Comfort

7.9

Boarding

8.0

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 10

flight was completely cancelled. had to rent a car and drive 7 hours to get home.

Air Canada
6.7
Okay
969 reviews
Delta
7.9
Good
3,018 reviews

Comfort

7.9

Boarding

8.0

Food

7.2

Overall

7.9

Crew

8.5

Entertainment

7.8

Reviews

1 / 10

flight was completely cancelled. had to rent a car and drive 7 hours to get home.

Related info for your journey

Useful info, stats and facts about Calgary to St. Louis flights.

How popular is this Calgary to St. Louis flight route?

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

C$ 290 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and WestJet, with prices starting from C$ 294 and C$ 397, respectively.

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

What does YYC to STL mean?

YYC stands for Calgary Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 467AverageC$ 612FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 500AverageC$ 675FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapestC$ 532AverageC$ 772FlexibilityNo cancel feeOn-time70%
Search British Airways flights
WestJetCheapestC$ 766AverageC$ 870FlexibilityNo cancel feeOn-time60%
Search WestJet flights
Endeavor AirlinesCheapestC$ 849AverageC$ 902FlexibilityNo cancel feeOn-timeN/A
Search Endeavor Airlines flights
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