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Cheap flights from St. Louis to Calgary from C$ 224

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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
10 Apr — 17 Apr1
1 adult
1 adult, Economy, 0 bags

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 11 March 2026.

Mon 20/44:30 p.m.
STL
-
YYC
1 stop21h 29m
American Airlines
Mon 27/41:40 p.m.
YYC
-
STL
1 stop21h 07m
American Airlines
Deal found 5/3C$ 462
Wed 20/58:03 p.m.
STL
-
YYC
1 stop17h 36m
American Airlines
Wed 3/66:15 a.m.
YYC
-
STL
1 stop9h 15m
American Airlines
Deal found 5/3C$ 490
Sun 19/49:55 p.m.
STL
-
YYC
2 stops38h 15m
Multiple Airlines
Sun 26/47:00 a.m.
YYC
-
STL
1 stop22h 50m
Multiple Airlines
Deal found 5/3C$ 496
Mon 11/58:03 p.m.
STL
-
YYC
1 stop17h 56m
American Airlines
Mon 18/51:40 p.m.
YYC
-
STL
1 stop21h 07m
American Airlines
Deal found 10/3C$ 500
Thu 23/48:03 p.m.
STL
-
YYC
1 stop17h 56m
American Airlines
Mon 27/41:40 p.m.
YYC
-
STL
1 stop21h 07m
American Airlines
Deal found 10/3C$ 504
Tue 21/44:59 p.m.
STL
-
YYC
2 stops44h 03m
Multiple Airlines
Tue 28/47:00 a.m.
YYC
-
STL
1 stop22h 50m
Multiple Airlines
Deal found 7/3C$ 506
Tue 21/44:30 p.m.
STL
-
YYC
1 stop21h 29m
American Airlines
Tue 28/41:40 p.m.
YYC
-
STL
1 stop9h 06m
American Airlines
Deal found 8/3C$ 530
Mon 6/46:33 p.m.
STL
-
YYC
1 stop19h 26m
American Airlines
Mon 13/41:40 p.m.
YYC
-
STL
1 stop21h 07m
American Airlines
Deal found 7/3C$ 535

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 11 March 2026.

Round-trip from

C$ 462

One-way from

C$ 224

Popular in

March

Cheapest in

November

Average price

C$ 876
American Airlines
  • American Airlines
  • 20/4-27/4
  • 2 total stops
  • 42h 36m total
  • St. Louis to Calgary
Search Deals
American Airlines
  • American Airlines
  • 9/6
  • 1 total stop
  • 15h 30m total
  • St. Louis to Calgary
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 3 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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 11 March 2026.
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 19/4

9:55 p.m.-11:10 a.m.

2 stops38h 15m

Calgary

Sun 26/4

7:00 a.m.-6:50 a.m.

1 stop22h 50m

C$ 496

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 3/6

2:27 p.m.-10:57 p.m.

1 stop9h 30m

Calgary

Fri 12/6

2:00 p.m.-12:36 a.m.

1 stop9h 36m

C$ 657

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 31/5

11:22 a.m.-8:30 p.m.

1 stop10h 08m

Calgary

Sat 13/6

6:35 a.m.-4:45 p.m.

1 stop9h 10m

C$ 683

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 20/4

8:15 p.m.-11:32 a.m.

1 stop16h 17m

Calgary

Fri 24/4

12:34 p.m.-9:52 p.m.

1 stop8h 18m

C$ 710
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 22/4

6:30 a.m.-11:32 a.m.

1 stop6h 02m

Calgary

Wed 29/4

12:34 p.m.-9:13 p.m.

1 stop7h 39m

C$ 710

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 10/8

2:53 p.m.-11:15 p.m.

1 stop9h 22m

Calgary

Sat 15/8

6:00 a.m.-1:55 p.m.

1 stop6h 55m

C$ 718

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 21/6

7:56 p.m.-10:50 a.m.

1 stop15h 54m

Calgary

Sat 27/6

7:00 p.m.-1:55 p.m.

1 stop17h 55m

C$ 718

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 31/5

6:45 a.m.-8:30 p.m.

2 stops14h 45m

Calgary

Fri 12/6

7:15 a.m.-11:01 p.m.

2 stops14h 46m

C$ 730

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 13/7

6:00 a.m.-6:10 p.m.

1 stop13h 10m

Calgary

Fri 24/7

6:00 a.m.-4:33 p.m.

2 stops9h 33m

C$ 732

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 7/8

5:33 p.m.-10:50 a.m.

2 stops18h 17m

Calgary

Sun 16/8

6:00 a.m.-4:33 p.m.

2 stops9h 33m

C$ 739

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/3

Showing 1-10 of 21 resultsSorted by cheapest first
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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 6 March 2026.

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, April is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 229). Flying from St. Louis to Calgary in March is currently the most expensive (average of C$ 755). 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.

How much does it cost to fly round-trip from St. Louis to Calgary?

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 9h 30m. Delta provides one of the quickest options available for as low as C$ 657. 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, April is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 229). Flying from St. Louis to Calgary in March is currently the most expensive (average of C$ 755). 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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Fly with Cheapflights

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How does Cheapflights help users find flights from St. Louis to Calgary?

When you search for this flight from St. Louis to Calgary, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Calgary?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Calgary from St. Louis.

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.

Can Cheapflights notify me if prices for flights from St. Louis to Calgary become cheaper?

Of course! You can now track prices for flights from St. Louis to Calgary and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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