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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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
26 May — 2 Jun1
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 26 April 2026.

Tue 26/58:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Thu 28/57:00 a.m.
YYC
-
STL
1 stop9h 33m
Multiple Airlines
Deal found 23/4C$ 518
Wed 20/55:27 p.m.
STL
-
YYC
1 stop24h 43m
Multiple Airlines
Sun 24/57:00 a.m.
YYC
-
STL
1 stop24h 55m
Multiple Airlines
Deal found 25/4C$ 525
Tue 18/86:06 a.m.
STL
-
YYC
1 stop18h 23m
American Airlines
Tue 25/86:29 a.m.
YYC
-
STL
1 stop12h 50m
American Airlines
Deal found 24/4C$ 527
Tue 22/912:10 p.m.
STL
-
YYC
1 stop9h 34m
Delta
Wed 30/97:15 a.m.
YYC
-
STL
2 stops14h 46m
Delta
Deal found 25/4C$ 547
Thu 7/512:36 p.m.
STL
-
YYC
2 stops27h 09m
Multiple Airlines
Sun 10/58:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 23/4C$ 564
Tue 15/97:44 a.m.
STL
-
YYC
1 stop16h 36m
American Airlines
Wed 23/96:45 a.m.
YYC
-
STL
1 stop10h 29m
American Airlines
Deal found 25/4C$ 568
Tue 4/87:00 a.m.
STL
-
YYC
1 stop17h 40m
American Airlines
Tue 11/86:29 a.m.
YYC
-
STL
1 stop12h 50m
American Airlines
Deal found 25/4C$ 582
Sat 23/58:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Sat 30/58:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 23/4C$ 585
Tue 18/82:15 p.m.
STL
-
YYC
1 stop9h 51m
Delta
Tue 25/87:15 a.m.
YYC
-
STL
2 stops14h 46m
Delta
Deal found 24/4C$ 599
Sat 6/62:15 p.m.
STL
-
YYC
1 stop9h 43m
Multiple Airlines
Sat 13/611:05 a.m.
YYC
-
STL
3 stops24h 01m
Multiple Airlines
Deal found 23/4C$ 600

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 26 April 2026.

Round-trip from

C$ 518

One-way from

C$ 224

Popular in

December

Cheapest in

November

Average price

C$ 762
26/5-28/5
  • 26/5-28/5
  • 2 total stops
  • 29h 10m total
  • St. Louis to Calgary
Search Deals
American Airlines
  • American Airlines
  • 16/9
  • 1 total stop
  • 16h 36m total
  • St. Louis to Calgary
Search Deals
High demand for flights, 7% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 26 April 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

Tue 15/9

2:15 p.m.-11:06 p.m.

1 stop9h 51m

Calgary

Wed 23/9

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

2 stops14h 46m

C$ 624

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 12/9

12:10 p.m.-11:06 p.m.

2 stops11h 56m

Calgary

Tue 22/9

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

2 stops14h 46m

C$ 633
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 13/7

5:33 p.m.-10:40 p.m.

1 stop6h 07m

Calgary

Fri 24/7

8:30 a.m.-3:46 p.m.

1 stop6h 16m

C$ 638

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 14/8

5:10 a.m.-6:30 p.m.

1 stop14h 20m

Calgary

Thu 27/8

9:30 a.m.-11:50 p.m.

1 stop13h 20m

C$ 638

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 8/8

11:18 a.m.-10:59 p.m.

2 stops12h 41m

Calgary

Fri 14/8

7:15 a.m.-6:00 p.m.

1 stop9h 45m

C$ 650

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 16/8

2:15 p.m.-11:06 p.m.

1 stop9h 51m

Calgary

Sun 23/8

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

1 stop9h 36m

C$ 664

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 7/7

4:10 p.m.-5:25 p.m.

2 stops26h 15m

Calgary

Sun 12/7

8:45 a.m.-7:23 p.m.

1 stop9h 38m

C$ 701

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 8/7

8:55 a.m.-1:21 a.m.

1 stop17h 26m

Calgary

Wed 15/7

11:55 p.m.-2:02 p.m.

1 stop13h 07m

C$ 708
Cheapest one-way

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 14/8

2:15 p.m.-11:06 p.m.

1 stop9h 51m

C$ 280
Quickest one-way

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 10/5

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

1 stop9h 30m

C$ 280

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/4

Showing 1-10 of 12 resultsSorted by cheapest first
1
2

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?

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 50 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, November is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 452). Flying from St. Louis to Calgary in December is currently the most expensive (average of C$ 954). 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 6h 07m. Delta provides one of the quickest options available for as low as C$ 638. 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, November is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 452). Flying from St. Louis to Calgary in December is currently the most expensive (average of C$ 954). 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
Kananaskis
Airdrie
Drumheller

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Alternative routes for St. Louis to Calgary

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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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