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St. Louis

$180+ Cheap flights from Calgary (YYC) to St. Louis (STL)

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
feb. 4 — feb. 111
mar. 2/4
mar. 2/11
1 adult, Economy
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The best prices from Calgary to Lambert-St Louis are usually found in March or May, booked 82 days in advance, depart on a Friday or Saturday and return on a Tuesday

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 enero 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$383
(Expedia)

One-way from

$180
(Air Canada)

Popular in

June

Cheapest in

March

Average price

$458
Provider with most accurate pricing for Calgary-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Calgary-Lambert-St Louis flights.
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From Calgary to Lambert-St Louis
Search Deals
One-way flight from Calgary to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in January 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 enero 30, 2025.

This Delta deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/712:40 pmYYC - STL
1 stop7h 53mDelta
mar. 2/1110:59 amSTL - YYC
2 stops10h 54mDelta
Deal found 1/29$373
This Expedia deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/2012:30 pmYYC - STL
2 stops9h 33mWestJet
vie. 3/286:00 amSTL - YYC
2 stops14h 05mWestJet
Deal found 1/29$383
This Air Canada deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/412:05 amYYC - STL
1 stop14h 01mAir Canada
mar. 2/114:36 pmSTL - YYC
1 stop6h 05mAir Canada
Deal found 1/29$408
This American Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/156:29 amYYC - STL
1 stop12h 00mAmerican Airlines
lun. 2/245:37 pmSTL - YYC
1 stop19h 13mAmerican Airlines
Deal found 1/29$416
This Kiwi.com deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/66:35 amYYC - STL
1 stop9h 18mMultiple Airlines
mié. 2/126:43 pmSTL - YYC
1 stop28h 42mMultiple Airlines
Deal found 1/29$468
This Alaska Airlines deal was found by Cheapflights users on 1/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/156:59 pmYYC - STL
1 stop18h 26mAlaska Airlines
dom. 2/237:00 amSTL - YYC
1 stop12h 09mAlaska Airlines
Deal found 1/29$623

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 2,558,603 searches. Data last updated enero 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

jue. 3/20

12:30 pm-11:03 pm

2 stops9h 33m

Lambert-St Louis

vie. 3/28

6:00 am-7:05 pm

2 stops14h 05m

$383

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sáb. 2/15

6:29 am-7:29 pm

1 stop12h 00m

Lambert-St Louis

lun. 2/24

5:37 pm-11:50 am

1 stop19h 13m

$416

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

jue. 3/20

6:30 am-4:52 pm

1 stop9h 22m

Lambert-St Louis

vie. 3/28

10:19 am-8:04 pm

1 stop10h 45m

$492

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

jue. 3/20

11:30 am-8:10 pm

2 stops31h 40m

Lambert-St Louis

vie. 3/28

6:10 am-8:00 am

3 stops26h 50m

$496

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

vie. 2/14

12:50 am-3:06 pm

1 stop13h 16m

Lambert-St Louis

lun. 2/24

1:39 pm-9:41 pm

1 stop9h 02m

$566

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sáb. 2/15

6:59 pm-2:25 pm

1 stop18h 26m

Lambert-St Louis

dom. 2/23

7:00 am-6:09 pm

1 stop12h 09m

$623

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

jue. 3/20

6:15 am-3:06 pm

1 stop7h 51m

$180

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom. 3/16

4:35 pm-9:16 am

2 stops15h 41m

$182

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom. 3/16

6:30 am-11:03 pm

1 stop15h 33m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Compare providers for flights from Calgary to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Calgary to St. Louis in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Calgary-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Calgary-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Calgary-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Calgary-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Calgary-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 24, 2025.

To ensure you get the cheapest price possible for a flight from Calgary to St. Louis, you should look to book at least 82 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from Calgary to St. Louis (average of $311). Flying from Calgary to St. Louis in March is currently the most expensive (average of $356). 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 enero 30, 2025.

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.

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 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

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 enero 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and American Airlines from Calgary to St. Louis. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,686 reviews
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,450 reviews
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

WestJet
7.2
Good
2,817 reviews
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Air Canada
7.0
Good
8,641 reviews
Alaska Airlines
8.0
Very good
9,686 reviews

Entertainment

7.1

Overall

8.0

Crew

8.5

Boarding

8.2

Food

7.1

Comfort

7.9

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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?

    WestJet, at $383, was found to be the cheapest airline from Calgary to St. Louis.Alternate airlines to your destination round-trip include American Airlines and Delta. WestJet is currently priced 14% below the average price you’ll pay for this route.

  • 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, August is the cheapest month in which you can book a flight from Calgary to St. Louis (average of $311). Flying from Calgary to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for Calgary to St. Louis

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Top airline flying from Calgary to St. Louis

Discover the top airline 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 2,558,603 searches. Data last updated enero 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$295Average$362FlexibilityNo cancel feeOn-time67%
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