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

A quick flight from St. Louis to Calgary can take about 14h 25m. American Airlines provides one of the quickest options available for as low as C$ 414. There are 2297 km between St. Louis and Calgary.

What is the cheapest day to fly from St. Louis to Calgary?

Travelers seeking maximum savings on their St. Louis to Calgary flight should consider departing on Thursday at noon when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in Calgary ranges from 9.0 - 94.0 mm per month. June is typically the wettest month, when rainfall can reach 94.0 mm. January is typically the driest time to visit Calgary when rainfall is around 9.0 mm.

If weather is an important factor for your trip to Calgary, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -7.0 C).

What is the cheapest day to fly round-trip from St. Louis to Calgary?

Sunday flights are generally found to be more expensive for flights from St. Louis to Calgary. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Calgary.

How far in advance should I book a flight from St. Louis to Calgary?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 27 days in advance, which can save you up to 228% on flights from St. Louis to Calgary compared to booking the week you need them. Waiting 27 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at C$ 248. For sooner than that we have options available in the next 3 days from C$ 773.

What is the cheapest month to fly from St. Louis to Calgary?

Due to multiple factors, expect to potentially pay more when booking in September. For low rates, January can be a great choice for travel to Calgary. Flights to Calgary from St. Louis in January are about C$ 777 on average during January, but can be found for as low as C$ 219.

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

It’s typically best to fly out from St. Louis to Calgary at noon. Doing so could potentially save you 39% on the flight price compared to flying in the afternoon, which is usually more expensive.

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.

C$ 155+ Flights from St. Louis to Calgary

Cheapflights Tip: The best prices from Lambert-St Louis to Calgary are usually found in January or April, booked 26 days in advance, depart on a Thursday or Wednesday and return on a Sunday

Cheap flight deals from St. Louis to Calgary

Round-trip from	C$ 395
One-way from	C$ 155
Popular in	September
Cheapest in	January
Average price	C$ 883

American Airlines
25/10-1/11
3 total stops
35h 23m total
St. Louis to Calgary

Search Deals

10/10
1 total stop
14h 13m total
St. Louis to Calgary

Search Deals

Highest demand for flights based on searches. 2% potential increase in price (C$ 25 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from St. Louis to Calgary

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 September 2025.

Sat 25/104:34 p.m.STL - YYC

1 stop21h 00mAmerican Airlines

Sat 1/116:45 a.m.YYC - STL

2 stops14h 23mAmerican Airlines

Deal found 9/9C$ 395

Sat 11/108:00 p.m.STL - YYC

1 stop17h 34mAmerican Airlines

Tue 14/101:29 p.m.YYC - STL

1 stop9h 25mAmerican Airlines

Deal found 10/9C$ 403

Fri 3/109:56 a.m.STL - YYC

1 stop14h 25mAmerican Airlines

Fri 10/101:29 p.m.YYC - STL

1 stop17h 40mAmerican Airlines

Deal found 9/9C$ 414

Tue 21/104:34 p.m.STL - YYC

1 stop21h 00mAmerican Airlines

Sun 26/101:29 p.m.YYC - STL

1 stop9h 25mAmerican Airlines

Deal found 11/9C$ 418

Sat 4/105:25 p.m.STL - YYC

1 stop20h 06mAmerican Airlines

Fri 10/101:29 p.m.YYC - STL

1 stop17h 40mAmerican Airlines

Deal found 10/9C$ 420

Mon 20/104:34 p.m.STL - YYC

1 stop21h 00mAmerican Airlines

Thu 23/101:29 p.m.YYC - STL

1 stop17h 40mAmerican Airlines

Deal found 11/9C$ 448

Sat 25/104:51 p.m.STL - YYC

1 stop31h 14mMultiple Airlines

Fri 31/101:00 a.m.YYC - STL

2 stops16h 10mMultiple Airlines

Deal found 9/9C$ 474

Sun 26/105:15 p.m.STL - YYC

2 stops25h 00mMultiple Airlines

Sun 2/117:35 p.m.YYC - STL

1 stop14h 49mMultiple Airlines

Deal found 10/9C$ 482

Thu 25/99:50 a.m.STL - YYC

2 stops11h 12mMultiple Airlines

Sun 28/98:55 a.m.YYC - STL

1 stop23h 11mMultiple Airlines

Deal found 11/9C$ 507

Best flights from St. Louis to Calgary
Discover carefully curated flight deals from St. Louis to Calgary that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 11 September 2025.

Fri 3/109:56 a.m.STL - YYC

1 stop14h 25mAmerican Airlines

Fri 10/101:29 p.m.YYC - STL

1 stop17h 40mAmerican Airlines

Deal found 9/9C$ 414

Thu 23/1012:25 p.m.STL - YYC

1 stop24h 13mUnited Airlines

Fri 31/1012:37 p.m.YYC - STL

1 stop24h 48mUnited Airlines

Deal found 11/9C$ 606

Sat 25/107:15 p.m.STL - YYC

2 stops23h 00mMultiple Airlines

Sat 1/1112:20 p.m.YYC - STL

2 stops21h 42mMultiple Airlines

Deal found 9/9C$ 608

Thu 20/112:21 p.m.STL - YYC

1 stop9h 49mDelta

Sun 23/117:45 a.m.YYC - STL

1 stop10h 12mDelta

Deal found 9/9C$ 612

Wed 14/13:36 p.m.STL - YYC

1 stop22h 09mAmerican Airlines

Sat 24/11:40 p.m.YYC - STL

1 stop23h 07mAmerican Airlines

Deal found 9/9C$ 467

Fri 26/97:16 a.m.STL - YYC

1 stop15h 34mAmerican Airlines

Fri 3/106:29 a.m.YYC - STL

1 stop13h 03mAmerican Airlines

Deal found 9/9C$ 546

Thu 23/108:05 p.m.STL - YYC

1 stop17h 29mAmerican Airlines

Fri 31/106:45 a.m.YYC - STL

1 stop8h 32mAmerican Airlines

Deal found 9/9C$ 546

Last-minute flights from St. Louis to Calgary
Discover last-minute flight deals from St. Louis to Calgary. Data last updated 11 September 2025 and is based on user searches.

Thu 18/96:05 a.m.STL - YYC

1 stop7h 26mAmerican Airlines

Mon 22/96:29 a.m.YYC - STL

1 stop12h 56mAmerican Airlines

Deal found 8/9C$ 642

Thu 18/99:19 a.m.STL - YYC

2 stops11h 24mDelta

Mon 22/97:55 a.m.YYC - STL

1 stop9h 07mDelta

Deal found 8/9C$ 752

Thu 18/911:04 a.m.STL - YYC

1 stop9h 56mWestJet

Sun 21/912:30 a.m.YYC - STL

1 stop19h 45mWestJet

Deal found 8/9C$ 841

Fri 19/98:50 a.m.STL - YYC

1 stop14h 00mAmerican Airlines

Sun 21/96:45 a.m.YYC - STL

1 stop11h 48mAmerican Airlines

Deal found 9/9C$ 716

Fri 19/99:19 a.m.STL - YYC

2 stops11h 24mDelta

Sun 21/97:00 a.m.YYC - STL

2 stops8h 44mDelta

Deal found 9/9C$ 782

Fri 19/96:30 p.m.STL - YYC

2 stops14h 01mMultiple Airlines

Sun 21/98:55 a.m.YYC - STL

1 stop23h 11mMultiple Airlines

Deal found 9/9C$ 804

One-way flights from St. Louis to Calgary
Search for one-way flight options from St. Louis to Calgary. Find affordable one-way fares based on user searches. Data last updated 11 September 2025.

Fri 10/1010:59 p.m.STL - YYC

1 stop14h 13mMultiple Airlines

Deal found 11/9C$ 155

Thu 11/126:26 p.m.STL - YYC

2 stops24h 04mMultiple Airlines

Deal found 9/9C$ 188

Sat 13/122:48 p.m.STL - YYC

3 stops27h 42mMultiple Airlines

Deal found 9/9C$ 201

Sat 13/128:41 a.m.STL - YYC

2 stops14h 04mAmerican Airlines

Deal found 9/9C$ 209

Wed 10/127:43 p.m.STL - YYC

3 stops21h 32mMultiple Airlines

Deal found 9/9C$ 227

Fri 26/127:05 a.m.STL - YYC

2 stops14h 11mDelta

Deal found 11/9C$ 410

Fly from

Fly to

Route

Depart

Return

Price

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 3/10

9:56 a.m.-11:21 p.m.

1 stop14h 25m

Calgary

Fri 10/10

1:29 p.m.-8:09 a.m.

1 stop17h 40m

C$ 414

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 14/1

3:36 p.m.-12:45 p.m.

1 stop22h 09m

Calgary

Sat 24/1

1:40 p.m.-1:47 p.m.

1 stop23h 07m

C$ 467

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 26/9

7:16 a.m.-9:50 p.m.

1 stop15h 34m

Calgary

Fri 3/10

6:29 a.m.-8:32 p.m.

1 stop13h 03m

C$ 546

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 23/10

8:05 p.m.-12:34 p.m.

1 stop17h 29m

Calgary

Fri 31/10

6:45 a.m.-4:17 p.m.

1 stop8h 32m

C$ 546

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 23/10

12:25 p.m.-11:38 a.m.

1 stop24h 13m

Calgary

Fri 31/10

12:37 p.m.-2:25 p.m.

1 stop24h 48m

C$ 606

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 25/10

7:15 p.m.-5:15 p.m.

2 stops23h 00m

Calgary

Sat 1/11

12:20 p.m.-11:02 a.m.

2 stops21h 42m

C$ 608

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 20/11

2:21 p.m.-11:10 p.m.

1 stop9h 49m

Calgary

Sun 23/11

7:45 a.m.-6:57 p.m.

1 stop10h 12m

C$ 612

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 10/10

10:59 p.m.-12:12 p.m.

1 stop14h 13m

C$ 155

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 11/12

6:26 p.m.-7:09 p.m.

1 stop25h 43m

C$ 195

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 13/12

2:48 p.m.-5:30 p.m.

3 stops27h 42m

C$ 201

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Showing 1-10 of 13 results

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 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, January is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 138). Flying from St. Louis to Calgary in July is currently the most expensive (average of C$ 263). 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.

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 14h 25m. American Airlines provides one of the quickest options available for as low as C$ 414. There are 2297 km between St. Louis and Calgary.
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, January is the cheapest month in which you can book a flight from St. Louis to Calgary (average of C$ 138). Flying from St. Louis to Calgary in July is currently the most expensive (average of C$ 263). 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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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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Cheap flights from St. Louis to Calgary from C$ 155

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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Lambert-St Louis to Calgary are usually found in January or April, booked 26 days in advance, depart on a Thursday or Wednesday and return on a Sunday

Cheap flight deals from St. Louis to Calgary

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to Calgary

Cheapest flights from St. Louis to CalgaryExplore 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 September 2025.

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 September 2025.

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

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.

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?

What is the cheapest month to book a flight 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?

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

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

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

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

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

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

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

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

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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 September 2025.