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Cheap flights from St. Louis to Calgary from C$ 222

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 9/8. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
11 Jul — 18 Jul1
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 June 2026.

Tue 18/88:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Tue 25/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 10/6C$ 535
Wed 14/108:10 p.m.
STL
-
YYC
1 stop19h 35m
Multiple Airlines
Tue 27/1012:30 a.m.
YYC
-
STL
1 stop8h 10m
Multiple Airlines
Deal found 7/6C$ 557
Wed 12/84:57 p.m.
STL
-
YYC
1 stop19h 03m
Multiple Airlines
Thu 20/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 8/6C$ 563
Wed 14/108:10 p.m.
STL
-
YYC
1 stop19h 35m
Multiple Airlines
Fri 30/108:55 a.m.
YYC
-
STL
1 stop23h 45m
Multiple Airlines
Deal found 7/6C$ 567
Tue 13/1010:35 a.m.
STL
-
YYC
1 stop25h 25m
Multiple Airlines
Mon 26/1012:30 a.m.
YYC
-
STL
1 stop8h 10m
Multiple Airlines
Deal found 7/6C$ 570
Tue 25/88:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Wed 2/98:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 8/6C$ 571
Sat 22/88:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Wed 26/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 7/6C$ 577
Thu 15/1010:35 a.m.
STL
-
YYC
1 stop25h 25m
Multiple Airlines
Mon 26/1012:30 a.m.
YYC
-
STL
1 stop8h 10m
Multiple Airlines
Deal found 7/6C$ 578
Sat 1/84:57 p.m.
STL
-
YYC
1 stop19h 03m
Multiple Airlines
Thu 6/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 7/6C$ 580
Sun 23/86:33 p.m.
STL
-
YYC
2 stops21h 42m
Multiple Airlines
Sat 29/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 7/6C$ 581
Mon 24/88:08 p.m.
STL
-
YYC
1 stop19h 37m
Multiple Airlines
Wed 26/88:45 a.m.
YYC
-
STL
1 stop9h 38m
Multiple Airlines
Deal found 10/6C$ 583

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 June 2026.

Round-trip from

C$ 535

One-way from

C$ 222

Popular in

December

Cheapest in

November

Average price

C$ 948
18/8-25/8
  • 18/8-25/8
  • 2 total stops
  • 29h 15m total
  • St. Louis to Calgary
Search Deals
Air Canada
  • Air Canada
  • 9/8
  • 1 total stop
  • 10h 03m total
  • St. Louis to Calgary
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 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

Mon 26/10

8:15 p.m.-11:54 a.m.

1 stop16h 39m

Calgary

Wed 28/10

6:20 a.m.-8:59 p.m.

1 stop13h 39m

C$ 608

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 11/9

5:30 p.m.-10:36 p.m.

1 stop6h 06m

Calgary

Tue 15/9

8:30 a.m.-3:38 p.m.

1 stop6h 08m

C$ 608

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 29/8

4:40 p.m.-9:48 p.m.

1 stop6h 08m

Calgary

Fri 4/9

8:30 a.m.-3:38 p.m.

1 stop6h 08m

C$ 620

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 28/8

7:25 a.m.-10:36 p.m.

1 stop16h 11m

Calgary

Fri 4/9

9:30 a.m.-4:34 p.m.

1 stop6h 04m

C$ 620

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 18/8

2:40 p.m.-9:05 p.m.

1 stop7h 25m

Calgary

Tue 25/8

9:25 a.m.-6:42 p.m.

1 stop8h 17m

C$ 684

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/8

4:57 p.m.-3:15 p.m.

2 stops23h 18m

Calgary

Fri 14/8

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

1 stop9h 38m

C$ 686
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 9/9

1:36 p.m.-6:30 p.m.

1 stop5h 54m

Calgary

Wed 16/9

6:00 a.m.-12:40 p.m.

1 stop5h 40m

C$ 688

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 15/9

4:40 p.m.-9:48 p.m.

1 stop6h 08m

Calgary

Wed 23/9

8:30 a.m.-3:38 p.m.

1 stop6h 08m

C$ 688

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 13/7

4:48 p.m.-9:48 p.m.

1 stop6h 00m

Calgary

Tue 21/7

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

1 stop6h 16m

C$ 719

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 11/10

6:30 a.m.-12:47 p.m.

1 stop7h 17m

Calgary

Sat 31/10

7:45 a.m.-11:39 p.m.

2 stops14h 54m

C$ 725

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/6

Showing 1-10 of 18 resultsSorted by cheapest first
1
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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?

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 27 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$ 697). Flying from St. Louis to Calgary in December is currently the most expensive (average of C$ 1,016). 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.

  • 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$ 697). Flying from St. Louis to Calgary in December is currently the most expensive (average of C$ 1,016). 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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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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