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Cheap flights from St. Louis to Calgary from C$ 185

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
11 ene. — 18 ene.1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Lambert-St Louis to Calgary are usually found in November or January, booked 26 days in advance, depart on a Thursday or Wednesday and return on a Sunday

Cheap flight deals from St. Louis to Calgary

Enter your travel dates to find the best prices.

Cheapest flights from St. Louis to Calgary
Explore the most affordable flight options available from St. Louis to Calgary. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 diciembre 2025.

sáb. 13/125:34 p.m.STL - YYC
1 stop28h 23mWestJet
dom. 14/1212:15 a.m.YYC - STL
2 stops16h 41mWestJet
Deal found 9/12C$ 975

Find flight deals from St. Louis to Calgary

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Calgary (YYC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 12 diciembre 2025.

Round-trip from

C$ 407

One-way from

C$ 185

Popular in

December

Cheapest in

November

Average price

C$ 1,055
25/1-31/1
  • 25/1-31/1
  • 2 total stops
  • 55h 59m total
  • St. Louis to Calgary
Search Deals
24/1
  • 24/1
  • 2 total stops
  • 24h 00m total
  • St. Louis to Calgary
Search Deals
High demand for flights, 10% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Calgary that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 12 diciembre 2025.
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.

Fly from

St. Louis

Fly to

Calgary

Route

Depart

Return

Price

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

dom. 25/1

9:27 p.m.-11:05 p.m.

1 stop26h 38m

Calgary

sáb. 31/1

12:30 a.m.-6:51 a.m.

1 stop29h 21m

C$ 407

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

jue. 22/1

6:44 p.m.-12:48 p.m.

1 stop19h 04m

Calgary

dom. 25/1

1:40 p.m.-10:20 a.m.

1 stop19h 40m

C$ 479

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

lun. 12/1

6:44 p.m.-12:48 p.m.

1 stop19h 04m

Calgary

vie. 16/1

1:40 p.m.-1:09 p.m.

1 stop22h 29m

C$ 479

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

jue. 22/1

5:42 p.m.-11:44 a.m.

2 stops19h 02m

Calgary

dom. 25/1

7:35 p.m.-8:50 p.m.

1 stop24h 15m

C$ 552

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

mar. 27/1

6:30 a.m.-9:53 p.m.

2 stops16h 23m

Calgary

mié. 28/1

12:37 p.m.-10:58 p.m.

1 stop9h 21m

C$ 594

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

sáb. 11/4

11:57 a.m.-8:04 a.m.

2 stops21h 07m

Calgary

vie. 17/4

1:25 p.m.-2:11 p.m.

1 stop23h 46m

C$ 706

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

sáb. 24/1

8:22 p.m.-7:22 p.m.

2 stops24h 00m

C$ 185

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

jue. 15/1

1:35 p.m.-11:05 a.m.

3 stops22h 30m

C$ 305

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

jue. 15/1

3:37 p.m.-9:58 p.m.

1 stop7h 21m

C$ 343

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

vie. 26/12

6:35 p.m.-8:43 a.m.

2 stops15h 08m

C$ 528

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 14 results
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Best time to book a flight from St. Louis to Calgary

Have a flexible travel schedule? Discover the best time to fly to Calgary from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Calgary

How far ahead should I book a flight from St. Louis to Calgary?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Calgary. Price data was last updated on 5 December 2025.

The price you pay for your flight from St. Louis to Calgary may vary depending on when you book. For the best chance of a lower fare, look to book 26 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from St. Louis to Calgary?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 218). Flying from St. Louis to Calgary in August is currently the most expensive (average of C$ 630). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Calgary. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Calgary?

    A quick flight from St. Louis to Calgary can take about 16h 23m. American Airlines provides one of the quickest options available for as low as C$ 594. There are 2297 km between St. Louis and Calgary. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from St. Louis to Calgary that include hotel bookings?

    Yes. In addition to deals on St. Louis to Calgary flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Calgary?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Calgary.

  • Can I find deals for business class flights from St. Louis to Calgary?

    Yes. Cheapflights offers flight deals from St. Louis to Calgary by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Calgary?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 218). Flying from St. Louis to Calgary in August is currently the most expensive (average of C$ 630). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Canmore
Radium Hot Springs
Airdrie
Kananaskis
Drumheller

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Can Cheapflights find flights from St. Louis to Calgary with no change fees?

Need flexible booking options for your flight to Calgary from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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