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$129+ Cheap flights from St. Louis (STL) to Calgary (YYC)

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Lambert-St Louis to Calgary are usually found in January or October, booked 62 days in advance, depart on a Tuesday or Saturday and return on a Friday

Cheap flight deals from St. Louis to Calgary

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Calgary (YYC). 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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$360
(Kiwi.com)

One-way from

$129
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$618
Provider with most accurate pricing for Lambert-St Louis-Calgary flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Calgary flights.
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From Lambert-St Louis to Calgary
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One-way flight from Lambert-St Louis to Calgary
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($57 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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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 March 28, 2025.

This Kiwi.com deal was found by Cheapflights users on 3/27. 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.
Sun 5/1112:15 pmSTL - YYC
2 stops9h 04mMultiple Airlines
Sun 5/1810:05 amYYC - STL
1 stop13h 01mMultiple Airlines
Deal found 3/27$360
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 5/145:19 amSTL - YYC
1 stop7h 31mAmerican Airlines
Mon 5/191:18 pmYYC - STL
1 stop19h 31mAmerican Airlines
Deal found 3/27$365
This Air Canada deal was found by Cheapflights users on 3/28. 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.
Fri 4/184:45 pmSTL - YYC
1 stop6h 03mAir Canada
Fri 4/256:15 amYYC - STL
1 stop7h 34mAir Canada
Deal found 3/28$394
This United deal was found by Cheapflights users on 3/27. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/146:30 amSTL - YYC
2 stops16h 18mUnited Airlines
Mon 5/191:30 pmYYC - STL
2 stops24h 17mUnited Airlines
Deal found 3/27$430
This Delta deal was found by Cheapflights users on 3/27. 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.
Fri 5/232:29 pmSTL - YYC
1 stop9h 32mDelta
Mon 6/26:30 amYYC - STL
1 stop9h 30mDelta
Deal found 3/27$431
This Justfly.com deal was found by Cheapflights users on 3/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/143:43 pmSTL - YYC
1 stop7h 32mWestJet
Tue 6/1712:30 amYYC - STL
1 stop8h 09mWestJet
Deal found 3/27$440
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 10/237:00 amSTL - YYC
1 stop28h 37mAlaska Airlines
Mon 10/276:55 pmYYC - STL
1 stop28h 01mAlaska Airlines
Deal found 3/27$486

Cheapflights Fare Finder

Customize your flight search to find flights from St. Louis to Calgary 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 March 28, 2025.
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.

Fly from

St. Louis

Fly to

Calgary

Route

Depart

Return

Price

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 5/11

12:15 pm-8:19 pm

2 stops9h 04m

Calgary

Sun 5/18

10:05 am-12:06 am

1 stop13h 01m

$360

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 5/14

5:19 am-11:50 am

1 stop7h 31m

Calgary

Mon 5/19

1:18 pm-9:49 am

1 stop19h 31m

$365

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 4/18

4:45 pm-9:48 pm

1 stop6h 03m

Calgary

Fri 4/25

6:15 am-2:49 pm

1 stop7h 34m

$394

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 5/14

6:30 am-9:48 pm

2 stops16h 18m

Calgary

Mon 5/19

1:30 pm-2:47 pm

2 stops24h 17m

$430

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 5/23

2:29 pm-11:01 pm

1 stop9h 32m

Calgary

Mon 6/2

6:30 am-5:00 pm

1 stop9h 30m

$431

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 6/14

3:43 pm-10:15 pm

1 stop7h 32m

Calgary

Tue 6/17

12:30 am-9:39 am

1 stop8h 09m

$440

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 9/1

7:36 pm-11:52 pm

1 stop29h 16m

Calgary

Sun 9/7

7:33 pm-11:59 pm

1 stop27h 26m

$517

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 7/9

7:24 pm-2:45 pm

1 stop20h 21m

$129

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 7/1

2:23 pm-11:00 pm

1 stop9h 37m

$211

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 7/1

9:15 am-6:26 pm

2 stops10h 11m

$213

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 12 results
1
2

Compare providers for flights from St. Louis to Calgary

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 St. Louis to Calgary in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust 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 St. Louis-Calgary flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Calgary flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Calgary flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Calgary 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 St. Louis-Calgary 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 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?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Calgary. Price data was last updated on March 21, 2025.

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 62 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 $300). Flying from St. Louis to Calgary in June is currently the most expensive (average of $416). 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 STL to YYC?

Find hourly flight availability from St. Louis to Calgary. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

When flying from St. Louis to Calgary, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 21% versus a flight in the morning.

Rainfall in Calgary by month

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

In terms of precipitation, rainfall in Calgary ranges from 0.4 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. January is typically the driest time to visit Calgary when rainfall is around 0.4 in.

Temperature in Calgary by month

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

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 19.4 F).

Reviews of airlines servicing Calgary

Get insights into the airlines that provide service to Calgary. 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 Calgary. Reviews last updated March 28, 2025.
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
9,798 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
7,897 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
United Airlines
7.4
Good
8,603 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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
2,785 reviews
Alaska Airlines
8.0
Very good
9,798 reviews

Boarding

8.2

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Crew

8.5

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 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.

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

    Cheapflights users have booked flights from St. Louis to Calgary round-trip from $365. Other airlines that can offer you cheap pricing are Air Canada, from $394, and United Airlines, from $430. Users have found that American Airlines is 35% cheaper than the other options available to this destination.

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

    $211 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from $213 and $293, respectively.

  • 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 $300). Flying from St. Louis to Calgary in June is currently the most expensive (average of $416). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Canmore
Airdrie

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Alternative routes for St. Louis to Calgary

See prices for flight routes from nearby airports that may be better suited for you.
Kansas City to Calgary flights
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Top 5 airlines flying from St. Louis to Calgary

Discover the top 5 airlines that operate flights from St. Louis to Calgary. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$187Average$600FlexibilityNo cancel feeOn-time67%
DeltaCheapest$196Average$442FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$343Average$668FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$400Average$677FlexibilityNo cancel feeOn-time71%
WestJetCheapest$410Average$640FlexibilityNo cancel feeOn-time60%
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