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Cheap flights from St. Louis to Calgary from C$ 255

STL — YYC
25 Nov — 2 Dec1
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

Mon 7/127:54 p.m. -
2 stops16h 21m
Sun 13/121:25 a.m. -
1 stop9h 52m
Deal found 23/10C$ 643
Mon 23/116:35 p.m. -
1 stop17h 30m
Mon 30/118:00 p.m. -
2 stops39h 06m
Deal found 24/10C$ 703
Sun 6/122:27 p.m. -
2 stops45h 48m
Sun 13/128:45 a.m. -
1 stop26h 32m
Deal found 22/10C$ 721
Fri 11/1212:02 p.m. -
1 stop24h 03m
Sun 3/18:00 p.m. -
2 stops19h 26m
Deal found 21/10C$ 752
Tue 8/126:04 a.m. -
2 stops18h 40m
Tue 15/128:45 a.m. -
1 stop26h 32m
Deal found 24/10C$ 754
Wed 9/128:40 a.m. -
1 stop14h 13m
Sun 13/121:37 p.m. -
1 stop5h 49m
Deal found 25/10C$ 765
Tue 24/114:05 p.m. -
1 stop8h 01m
Fri 27/117:00 a.m. -
1 stop8h 26m
Deal found 25/10C$ 766

Find flight deals from St. Louis to Calgary

Round-trip from

C$ 643

One-way from

C$ 255

Popular in

February

Cheapest in

April

Average price

C$ 1,094
7/12-13/12
  • 7/12-13/12
  • 3 total stops
  • 26h 13m total
  • St. Louis to Calgary
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7/12-31/12
  • 7/12-31/12
  • 3 total stops
  • 28h 50m total
  • St. Louis to Calgary
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 72 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 40 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Cheapflights Fare Finder

 
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 Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 7/12

7:54 p.m.-12:44 a.m.

3 stops28h 50m

Calgary

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 255

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 25/11

3:04 p.m.-11:15 a.m.

2 stops20h 11m

Calgary

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 279
Quickest round-trip

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 25/11

1:40 p.m.-10:53 p.m.

1 stop9h 13m

Calgary

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 343

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 7/12

6:04 a.m.-9:37 p.m.

1 stop15h 33m

Calgary

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 354

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sun 29/11

6:13 a.m.-4:35 p.m.

2 stops10h 22m

Calgary

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 469

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 20/1

8:52 a.m.-3:21 p.m.

1 stop6h 29m

Calgary

Thu 28/1

7:00 a.m.-2:03 p.m.

1 stop7h 03m

C$ 758

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 20/1

7:21 a.m.-10:55 p.m.

2 stops15h 34m

Calgary

Thu 28/1

7:00 a.m.-8:32 p.m.

2 stops13h 32m

C$ 815

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sun 22/11

2:20 p.m.-12:17 a.m.

1 stop9h 57m

Calgary

Sat 28/11

8:45 a.m.-4:31 p.m.

1 stop7h 46m

C$ 852

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sun 6/12

2:15 p.m.-12:21 a.m.

1 stop10h 06m

Calgary

Sun 13/12

1:43 p.m.-12:46 a.m.

1 stop11h 03m

C$ 852

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 23/11

1:45 p.m.-10:53 p.m.

1 stop9h 08m

Calgary

Sat 28/11

7:00 a.m.-11:39 p.m.

1 stop16h 39m

C$ 854

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 13 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

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 86 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$ 727). Flying from St. Louis to Calgary in February is currently the most expensive (average of C$ 1,269). 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?

Airfare is below average for this route at the moment.

St. Louis to Calgary flights typically cost between C$ 877 and C$ 1,017 in December.
The cheapest round-trip price found within the last 5 days was C$ 643 on Multiple Airlines (7 Dec-13 Dec).

Related info for your journey

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

    A quick flight from St. Louis to Calgary can take about 6h 29m. United Airlines provides one of the quickest options available for as low as C$ 758. 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$ 727). Flying from St. Louis to Calgary in February is currently the most expensive (average of C$ 1,269). 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
Drumheller
Airdrie

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for St. Louis to Calgary

Kansas City to Calgary flights
St. Louis to Edmonton flights

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