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Cheap flights from Calgary to St. Louis from C$ 229

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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
8 Jul — 15 Jul1
1 adult

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 3 July 2025.

Round-trip from

C$ 457

One-way from

C$ 229

Popular in

November

Cheapest in

January

Average price

C$ 609
25/7-28/7
  • 25/7-28/7
  • 2 total stops
  • 31h 57m total
  • Calgary to St. Louis
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17/8
  • 17/8
  • 1 total stop
  • 23h 16m total
  • Calgary to St. Louis
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Highest demand for flights based on searches. 5% potential increase in price (C$ 46 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 3 July 2025.

Fri 25/78:55 a.m.YYC - STL
1 stop23h 16mMultiple Airlines
Mon 28/710:47 a.m.STL - YYC
1 stop8h 41mMultiple Airlines
Deal found 1/7C$ 457
Tue 19/86:29 a.m.YYC - STL
1 stop11h 52mBritish Airways
Sat 23/86:00 a.m.STL - YYC
1 stop18h 29mBritish Airways
Deal found 1/7C$ 508
Tue 19/86:40 a.m.YYC - STL
1 stop6h 50mDelta
Sat 23/811:29 a.m.STL - YYC
2 stops12h 28mDelta
Deal found 1/7C$ 512
Thu 24/71:05 a.m.YYC - STL
1 stop18h 45mAir Canada
Mon 28/74:00 p.m.STL - YYC
1 stop8h 10mAir Canada
Deal found 1/7C$ 549
Sun 17/86:29 a.m.YYC - STL
1 stop12h 49mAmerican Airlines
Sun 24/87:23 a.m.STL - YYC
1 stop17h 06mAmerican Airlines
Deal found 3/7C$ 560
Thu 21/812:30 a.m.YYC - STL
1 stop8h 27mWestJet
Sun 24/81:26 p.m.STL - YYC
2 stops12h 18mWestJet
Deal found 2/7C$ 630

Cheapflights Fare Finder

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 3 July 2025.
Use the filters below to find and compare flights from Calgary to St. Louis that are best for you.

Fly from

Calgary

Fly to

St. Louis

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 25/7

8:55 a.m.-9:11 a.m.

1 stop23h 16m

Lambert-St Louis

Mon 28/7

10:47 a.m.-6:28 p.m.

1 stop8h 41m

C$ 457

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 19/8

6:29 a.m.-7:21 p.m.

1 stop11h 52m

Lambert-St Louis

Sat 23/8

6:00 a.m.-11:29 p.m.

1 stop18h 29m

C$ 508

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 19/8

6:40 a.m.-2:30 p.m.

1 stop6h 50m

Lambert-St Louis

Sat 23/8

11:29 a.m.-10:57 p.m.

2 stops12h 28m

C$ 512

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 24/7

1:05 a.m.-8:50 p.m.

1 stop18h 45m

Lambert-St Louis

Mon 28/7

4:00 p.m.-11:10 p.m.

1 stop8h 10m

C$ 549

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 17/8

6:29 a.m.-8:18 p.m.

1 stop12h 49m

Lambert-St Louis

Sun 24/8

7:23 a.m.-11:29 p.m.

1 stop17h 06m

C$ 560

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 21/8

12:30 a.m.-9:57 a.m.

1 stop8h 27m

Lambert-St Louis

Sun 24/8

1:26 p.m.-12:44 a.m.

2 stops12h 18m

C$ 630

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 17/8

8:55 a.m.-9:11 a.m.

1 stop23h 16m

C$ 229

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 29/9

6:29 a.m.-8:25 p.m.

1 stop12h 56m

C$ 251

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 24/11

12:30 p.m.-10:47 p.m.

1 stop9h 17m

C$ 256

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 17/9

7:55 a.m.-6:02 p.m.

1 stop9h 07m

C$ 273

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 13 results
1
2

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.

Cheapflights Insights

Everything you need to know about your flight from Calgary to St. Louis

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 3 July 2025.

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.

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

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 3 July 2025.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines 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
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,861 reviews
Delta
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
WestJet
7.2
Good
2,917 reviews
Delta
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Air Canada
7.1
Good
9,681 reviews
Delta
8.0
Very good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 British Airways is currently your cheapest option to St. Louis, with prices starting at C$ 508. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at C$ 512 and C$ 549, respectively. British Airways is priced at 16% 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$ 251 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from C$ 256 and C$ 273, 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

Travelling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Chesterfield
St. Peters

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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.
Calgary to Kansas City flights
Edmonton to Kansas City flights
Edmonton to St. Louis flights
Calgary to Columbia flights
Edmonton to Columbia flights

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 3 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 332AverageC$ 555FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 373AverageC$ 430FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 438AverageC$ 687FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 496AverageC$ 658FlexibilityNo cancel feeOn-time60%
Search WestJet flights

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

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

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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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