What’s the top layover airport for flights from Calgary to St. Louis?

Minneapolis (MSP) – chosen by Cheapflights users on 60% of one-stop itineraries from Calgary to St. Louis on Cheapflights.

Which airport typically offers the quickest layover for flights from Calgary to St. Louis?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 0h 55m.

What’s the cheapest layover airport for flights from Calgary to St. Louis?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of C$ 582.

What’s the fastest layover option from Calgary to St. Louis?

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 5h 45m.

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

Delta and United Airlines can get you from Calgary to St. Louis in just under 5h 57m. Your travel time can differ by up to 7h 39m. Airlines will cover a distance of 2297 km. This flight may include one or multiple stops.

What are the cheapest airlines flying from Calgary to St. Louis round-trip?

Flying on Delta is currently your cheapest option to St. Louis, with prices starting at C$ 345. Another option worth looking into is WestJet, starting at C$ 565 round trip. Delta is priced at 50% lower than the current average price of a flight leaving 3 months from now.

In terms of precipitation, rainfall in St. Louis ranges from 56.0 - 119.0 mm per month. May is typically the wettest month, when rainfall can reach 119.0 mm. February is typically the driest time to visit St. Louis when rainfall is around 56.0 mm.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 0.0 C).

What is the cheapest time of day to fly from YYC to STL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Calgary to St. Louis as you normally would.

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

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

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

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

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

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

C$ 234+ Cheap Flights from Calgary to St. Louis

Cheap flight deals from Calgary to St. Louis

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Calgary to St. Louis
Explore the most affordable flight options available from Calgary to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 September 2026.

Thu 24/99:00 p.m. -

2 stops15h 10m

Mon 28/92:29 p.m. -

1 stop8h 21m

Deal found 2/9C$ 392

Sat 3/101:51 p.m. -

1 stop9h 36m

Sat 10/105:23 p.m. -

1 stop20h 28m

Deal found 2/9C$ 463

Thu 1/1012:20 a.m. -

1 stop11h 50m

Fri 9/106:35 p.m. -

1 stop17h 25m

Deal found 4/9C$ 493

Mon 19/107:25 p.m. -

2 stops42h 59m

Mon 26/106:35 p.m. -

1 stop18h 30m

Deal found 4/9C$ 499

Tue 29/97:00 a.m. -

1 stop29h 10m

Tue 6/1012:17 p.m. -

2 stops29h 53m

Deal found 1/9C$ 516

Mon 28/97:00 a.m. -

1 stop16h 27m

Fri 2/105:00 a.m. -

1 stop19h 29m

Deal found 2/9C$ 524

Tue 20/106:35 a.m. -

1 stop5h 57m

Wed 21/102:22 p.m. -

1 stop9h 48m

Deal found 2/9C$ 537

Tue 20/106:00 a.m. -

1 stop13h 36m

Wed 21/106:00 a.m. -

1 stop6h 28m

Deal found 5/9C$ 549

Sat 26/96:35 a.m. -

1 stop9h 12m

Tue 29/911:21 a.m. -

2 stops12h 45m

Deal found 2/9C$ 552

Find flight deals from Calgary to St. Louis

Round-trip from	C$ 392
One-way from	C$ 234
Popular in	June
Cheapest in	May
Average price	C$ 667

24/9-28/9
3 total stops
23h 31m total
Calgary to St. Louis

Search Deals

27/10-31/12
1 total stop
16h 15m total
Calgary to St. Louis

Search Deals

High demand for flights, 0% potential price rise

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 34 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Tue 10/11

6:00 p.m.-4:40 p.m.

2 stops22h 40m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 282

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Wed 28/10

6:45 a.m.-8:57 p.m.

2 stops13h 12m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 297

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Wed 7/10

7:00 a.m.-11:59 p.m.

3 stops15h 59m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 318

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Mon 28/12

8:00 a.m.-1:57 p.m.

1 stop29h 57m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 339

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Wed 28/10

9:15 a.m.-11:59 p.m.

2 stops13h 44m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 358

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Sun 27/12

7:00 a.m.-8:08 p.m.

1 stop13h 08m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 408

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Tue 10/11

2:35 p.m.-9:48 a.m.

3 stops19h 13m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 441

Quickest round-trip

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Sun 13/9

12:33 p.m.-12:44 a.m.

1 stop11h 11m

Lambert-St Louis

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 448

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Thu 1/10

12:20 a.m.-1:10 p.m.

1 stop11h 50m

Lambert-St Louis

Fri 9/10

6:35 p.m.-3:15 p.m.

2 stops21h 40m

C$ 524

CalgarySt. Louis

YYC Calgary - STL Lambert-St Louis

YYCSTL

Calgary

Tue 20/10

6:35 a.m.-1:32 p.m.

1 stop5h 57m

Lambert-St Louis

Wed 21/10

2:22 p.m.-11:10 p.m.

1 stop9h 48m

C$ 537

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Showing 1-10 of 15 resultsSorted by cheapest first

Best time to book a flight from Calgary to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Calgary with our price prediction graph.

YYC-STL

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 Calgary to St. Louis

Prices

Currently, May is the cheapest month in which you can book a flight from Calgary to St. Louis (average of C$ 443). Flying from Calgary to St. Louis in June is currently the most expensive (average of C$ 960). 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 Calgary to St. Louis?

Airfare is below average for this route at the moment.

Calgary to St. Louis flights typically cost between C$ 618 and C$ 696 in September.
The cheapest round-trip price found within the last 5 days was C$ 392 on Multiple Airlines (24 Sep-28 Sep).

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Delta and WestJet from Calgary to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

7.8

Good

8,558 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Delta

7.8

Good

8,558 reviews

Delta

7.8

Good

8,558 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

WestJet

7.2

Good

3,446 reviews

Delta

7.8

Good

8,558 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Jorge,Aug 2026

TPA - ATL

Although I still enjoy flying Delta, the overall flying experience feels cheapened. But I guess that is true of most, if not all american carriers.

Related info for your journey

How long is the flight from Calgary to St. Louis?
Delta and United Airlines can get you from Calgary to St. Louis in just under 5h 57m. Your travel time can differ by up to 7h 39m. Airlines will cover a distance of 2297 km. This flight may include one or multiple stops.
What are the cheapest airlines flying from Calgary to St. Louis round-trip?
Flying on Delta is currently your cheapest option to St. Louis, with prices starting at C$ 345. Another option worth looking into is WestJet, starting at C$ 565 round trip. Delta is priced at 50% lower than the current average price of a flight leaving 3 months from now.
Can I find deals for flights from Calgary to St. Louis that include hotel bookings?
Yes. In addition to deals on Calgary to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Calgary to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Calgary to St. Louis.
Can I find deals for business class flights from Calgary to St. Louis?
Yes. Cheapflights offers flight deals from Calgary to St. Louis 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 Calgary to St. Louis?
Currently, May is the cheapest month in which you can book a flight from Calgary to St. Louis (average of C$ 443). Flying from Calgary to St. Louis in June is currently the most expensive (average of C$ 960). 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

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Calgary to Columbia flights

Top 2 airlines flying from Calgary to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Delta	CheapestC$ 345	AverageC$ 543	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
WestJet	CheapestC$ 565	AverageC$ 691	FlexibilityNo cancel fee	On-time60%	Search WestJet flights

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Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Calgary to St. Louis. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Calgary to St. Louis for you. Better yet — we are completely free to use.

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

Need flexible booking options for your flight to St. Louis from Calgary? 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 Calgary to St. Louis become cheaper?

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Cheap flights from Calgary to St. Louis from C$ 234

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 27/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Calgary to St. Louis

Cheapest flights from Calgary to St. LouisExplore the most affordable flight options available from Calgary to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 September 2026.

Explore the most affordable flight options available from Calgary to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 September 2026.

Best flights from Calgary to St. LouisDiscover carefully curated flight deals from Calgary to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Discover carefully curated flight deals from Calgary to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Last-minute flights from Calgary to St. LouisDiscover last-minute flight deals from Calgary to St. Louis. Data last updated 6 September 2026 and is based on user searches.

Discover last-minute flight deals from Calgary to St. Louis. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Calgary to St. LouisSearch for one-way flight options from Calgary to St. Louis. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Search for one-way flight options from Calgary to St. Louis. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Find flight deals from Calgary to St. Louis

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Use the filters below to find and compare flights from Calgary to St. Louis that are best for you.

Best time to book a flight from Calgary to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Calgary with our price prediction graph.

Cheapflights Insights

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

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

Airfare is below average for this route at the moment.

Calgary to St. Louis flights typically cost between C$ 618 and C$ 696 in September.The cheapest round-trip price found within the last 5 days was C$ 392 on Multiple Airlines (24 Sep-28 Sep).

What’s the top layover airport for flights from Calgary to St. Louis?

Minneapolis (MSP) – chosen by Cheapflights users on 60% of one-stop itineraries from Calgary to St. Louis on Cheapflights.

What’s the cheapest layover airport for flights from Calgary to St. Louis?

Denver (DEN) is the most affordable 1-stop option, with an average round-trip price of C$ 582.

What’s the fastest layover option from Calgary to St. Louis?

Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 5h 45m.

Which airport typically offers the quickest layover for flights from Calgary to St. Louis?

Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 0h 55m.

Reviews of airlines servicing St. Louis

Read reviews from past customers who have flown Delta and WestJet from Calgary to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Calgary to St. Louis round-trip?

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

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

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

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

Travelling to a place near St. Louis?

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Alternative routes for Calgary to St. Louis

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Complete your trip

Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to Missouri

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Search flights from Calgary to St. Louis by cabin class

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Calgary and St. Louis flights

Browse other Calgary and St. Louis flight options. Last updated on 6 September 2026.

Other flights from Calgary

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Top 2 airlines flying from Calgary to St. Louis

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Cheapest flights from Calgary to St. Louis
Explore the most affordable flight options available from Calgary to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 September 2026.

Best flights from Calgary to St. Louis
Discover carefully curated flight deals from Calgary to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Last-minute flights from Calgary to St. Louis
Discover last-minute flight deals from Calgary to St. Louis. Data last updated 6 September 2026 and is based on user searches.

One-way flights from Calgary to St. Louis
Search for one-way flight options from Calgary to St. Louis. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Calgary to St. Louis flights typically cost between C$ 618 and C$ 696 in September.
The cheapest round-trip price found within the last 5 days was C$ 392 on Multiple Airlines (24 Sep-28 Sep).