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Cheap flights from Calgary to St. Louis from C$ 249

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
23 Dec — 30 Dec1
1 adult

The best prices from Calgary to Lambert-St Louis are usually found in March or May, booked 82 days in advance, depart on a Sunday or Thursday and return on a Thursday

Cheap flight deals from Calgary to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Calgary (YYC) to St. Louis (STL). 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 18 December 2024.

Round-trip from

C$ 416

One-way from

C$ 249

Popular in

June

Cheapest in

March

Average price

C$ 713
Air Canada
  • Air Canada
  • 1/2-8/2
  • 2 total stops
  • 16h 19m total
  • Calgary to St. Louis
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Delta
  • Delta
  • 11/1
  • 2 total stops
  • 14h 14m total
  • Calgary to St. Louis
Search Deals
High demand for flights, 7% potential price rise
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Best time to find cheap flights, 2% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Calgary to St. Louis

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 18 December 2024.

Mon 23/127:00 a.m.YYC - STL
1 stop6h 49mWestJet
Mon 23/125:17 p.m.STL - YYC
1 stop19h 27mWestJet
Deal found 18/12C$ 1,040
Mon 23/126:19 a.m.YYC - STL
1 stop5h 29mUnited Airlines
Mon 23/124:43 p.m.STL - YYC
1 stop5h 58mUnited Airlines
Deal found 17/12C$ 1,484

Find flights from Calgary to St. Louis within your budget

Customize your flight search to find flights from Calgary to St. Louis 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 18 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 1/2

6:15 a.m.-3:06 p.m.

1 stop7h 51m

Lambert-St Louis

Sat 8/2

3:50 p.m.-11:18 p.m.

1 stop8h 28m

C$ 416

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 10/1

6:35 a.m.-9:49 p.m.

2 stops14h 14m

Lambert-St Louis

Mon 13/1

5:00 p.m.-11:18 p.m.

1 stop7h 18m

C$ 424

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 18/2

7:00 a.m.-10:17 p.m.

2 stops14h 17m

Lambert-St Louis

Mon 24/2

5:30 p.m.-7:05 p.m.

2 stops26h 35m

C$ 454

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 19/2

1:32 p.m.-10:02 p.m.

1 stop7h 30m

Lambert-St Louis

Sun 23/2

11:25 a.m.-9:54 p.m.

1 stop11h 29m

C$ 667

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 16/1

10:30 a.m.-8:10 p.m.

3 stops32h 40m

Lambert-St Louis

Thu 23/1

4:28 p.m.-10:55 p.m.

3 stops31h 27m

C$ 734

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 17/1

7:00 p.m.-6:23 p.m.

3 stops22h 23m

Lambert-St Louis

Mon 20/1

3:10 p.m.-6:10 p.m.

2 stops28h 00m

C$ 1,104

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 11/1

8:00 a.m.-11:14 p.m.

2 stops14h 14m

C$ 249

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 12/1

5:15 p.m.-11:27 p.m.

1 stop29h 12m

C$ 261

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 11/1

12:30 a.m.-9:23 a.m.

1 stop7h 53m

C$ 289

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 23/12

6:15 a.m.-3:06 p.m.

1 stop7h 51m

C$ 388

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/12

Showing 1-10 of 12 results
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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.
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.

Travel insights for flights from Calgary to St. Louis

Get recent, data-driven insights about flights from Calgary to St. Louis including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Calgary to St. Louis. Price data was last updated on 13 December 2024.

The best time to book flights from Calgary to St. Louis is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Calgary to St. Louis (average of C$ 365). Flying from Calgary to St. Louis in September is currently the most expensive (average of C$ 491). 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.

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

Find hourly flight availability from Calgary to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 December 2024.

It’s typically best to fly out from Calgary to St. Louis in the afternoon. Doing so could potentially save you 32% on the flight price compared to flying in the evening, which is usually more expensive.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

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.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated 18 December 2024.
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Alaska Airlines
8.0
Very good
9,554 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Delta
8.0
Very good
8,604 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

United Airlines
7.4
Good
9,055 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

WestJet
7.3
Good
2,818 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.2

Boarding

8.2

Entertainment

7.1

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Related info for your journey

Find useful and relevant information for your journey from Calgary to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Flying on Air Canada is currently your cheapest option to St. Louis, with prices starting at C$ 416. Additional round-trip tickets that might be worth considering are offered by Delta and WestJet, with the lowest prices starting at C$ 424 and C$ 454, respectively. Air Canada is priced at 37% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Calgary to St. Louis one-way?

    C$ 249 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on WestJet and Air Canada, with prices starting from C$ 289 and C$ 388, respectively.

  • 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, January is the cheapest month in which you can book a flight from Calgary to St. Louis (average of C$ 365). Flying from Calgary to St. Louis in September is currently the most expensive (average of C$ 491). 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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Alternative routes for Calgary to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Calgary to St. Louis

Discover the top 4 airlines that operate flights from Calgary to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 18 December 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 324AverageC$ 581FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
WestJetCheapestC$ 381AverageC$ 650FlexibilityNo cancel feeOn-time60%
Search WestJet flights
DeltaCheapestC$ 391AverageC$ 486FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 454AverageC$ 763FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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.

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