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$269+ Cheap flights from St. Louis (STL) to Calgary (YYC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
Dec 17 — Dec 241
Wed 12/17
Wed 12/24
1 adult, Economy
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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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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 Tuesday or Saturday and return on a Friday

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 November 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Fri 12/1212:07 pmSTL - YYC
1 stop11h 45mMultiple Airlines
Mon 12/158:55 amYYC - STL
2 stops36h 38mMultiple Airlines
Deal found 11/16$351
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 12/2810:10 pmSTL - YYC
2 stops25h 42mMultiple Airlines
Tue 1/138:55 amYYC - STL
1 stop20h 56mMultiple Airlines
Deal found 11/16$422
This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Tue 12/3010:48 amSTL - YYC
1 stop9h 21mMultiple Airlines
Wed 1/79:45 pmYYC - STL
2 stops16h 03mMultiple Airlines
Deal found 11/16$433
This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Tue 12/3010:48 amSTL - YYC
1 stop9h 21mMultiple Airlines
Tue 1/138:55 amYYC - STL
1 stop20h 56mMultiple Airlines
Deal found 11/16$438
This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Tue 12/3010:48 amSTL - YYC
1 stop9h 21mMultiple Airlines
Sat 1/109:45 pmYYC - STL
2 stops16h 03mMultiple Airlines
Deal found 11/16$444
This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Tue 12/3010:48 amSTL - YYC
1 stop9h 21mMultiple Airlines
Sun 1/1112:20 pmYYC - STL
2 stops33h 13mMultiple Airlines
Deal found 11/16$446
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 12/2810:10 pmSTL - YYC
2 stops25h 42mMultiple Airlines
Thu 1/812:30 amYYC - STL
1 stop13h 18mMultiple Airlines
Deal found 11/16$448
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 12/2810:10 pmSTL - YYC
2 stops25h 42mMultiple Airlines
Sun 1/114:20 pmYYC - STL
1 stop14h 30mMultiple Airlines
Deal found 11/16$449
This Kiwi.com deal was found by Cheapflights users on 11/16. 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.
Tue 12/3010:48 amSTL - YYC
1 stop9h 21mMultiple Airlines
Fri 1/99:00 amYYC - STL
2 stops24h 02mMultiple Airlines
Deal found 11/16$451
This Kiwi.com deal was found by Cheapflights users on 11/16. 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 12/2810:10 pmSTL - YYC
2 stops25h 42mMultiple Airlines
Wed 1/77:35 pmYYC - STL
1 stop15h 37mMultiple Airlines
Deal found 11/16$458

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 November 17, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$269
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$563
Provider with most accurate pricing for Lambert-St Louis-Calgary flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Calgary flights.
Search Deals
From Lambert-St Louis to Calgary
Search Deals
High demand for flights, 2% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 17, 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

Sat 1/24

8:22 pm-11:44 am

1 stop16h 22m

Calgary

Sat 1/31

12:30 am-6:51 am

1 stop29h 21m

$269

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/2

8:22 pm-11:43 am

1 stop16h 21m

Calgary

Fri 2/6

8:55 am-6:51 am

1 stop20h 56m

$296

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 12/12

12:07 pm-10:52 pm

1 stop11h 45m

Calgary

Mon 12/15

8:55 am-10:33 pm

2 stops36h 38m

$351

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 2/1

1:03 pm-12:14 pm

1 stop24h 11m

Calgary

Fri 2/13

9:00 am-10:33 pm

2 stops36h 33m

$356

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/5

10:10 pm-11:05 pm

1 stop25h 55m

Calgary

Mon 1/12

1:25 pm-1:54 pm

1 stop23h 29m

$415

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 12/30

10:48 am-7:09 pm

1 stop9h 21m

Calgary

Thu 1/8

7:30 am-7:50 am

2 stops23h 20m

$449

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 12/30

10:10 pm-11:05 pm

1 stop25h 55m

Calgary

Tue 1/6

7:35 pm-10:02 am

2 stops13h 27m

$458

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 12/28

10:10 pm-10:52 pm

2 stops25h 42m

Calgary

Wed 1/7

7:35 pm-12:12 pm

1 stop15h 37m

$458

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 1/1

10:42 am-7:09 pm

1 stop9h 27m

Calgary

Sun 1/11

4:20 pm-7:50 am

1 stop14h 30m

$463

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 1/1

10:42 am-7:09 pm

1 stop9h 27m

Calgary

Wed 1/7

7:35 pm-12:12 pm

1 stop15h 37m

$473

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/16

Showing 1-10 of 13 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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Calgary flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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 November 14, 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 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 $158). Flying from St. Louis to Calgary in December is currently the most expensive (average of $486). 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.

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 November 17, 2025.
Get a feel of what it's like to fly with Delta, United Airlines, and American Airlines from St. Louis to Calgary by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,008 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,015 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,048 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
WestJet
7.2
Good
3,163 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,459 reviews
Delta
7.9
Good
8,008 reviews

Food

7.3

Overall

7.9

Crew

8.5

Entertainment

7.9

Boarding

8.1

Comfort

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 $158. Other airlines that can offer you cheap pricing are Delta, from $190, and United Airlines, from $331. Users have found that Air Canada is 72% cheaper than the other options available to this destination.

  • 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 $158). Flying from St. Louis to Calgary in December is currently the most expensive (average of $486). 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
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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St. Louis to Grande Prairie flights

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 November 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$158Average$581FlexibilityNo cancel feeOn-time67%
DeltaCheapest$190Average$520FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$331Average$672FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$383Average$551FlexibilityNo cancel feeOn-time71%
WestJetCheapest$490Average$639FlexibilityNo cancel feeOn-time60%

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