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$338+ 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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
Feb 1 — Feb 81
Sun 2/1
Sun 2/8
1 adult, Economy
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1. Tell us where you want to go

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Cheap flight deals from St. Louis to Calgary

Best flights from St. Louis to Calgary
Discover carefully curated flight deals from St. Louis to Calgary that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated January 2, 2026.

This American Airlines deal was found by Cheapflights users on 12/31. 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 1/286:44 pmSTL - YYC
1 stop19h 04mAmerican Airlines
Wed 2/41:40 pmYYC - STL
1 stop19h 40mAmerican Airlines
Deal found 12/31$338
This Kiwi.com deal was found by Cheapflights users on 12/31. 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.
Thu 1/151:35 pmSTL - YYC
1 stop10h 30mMultiple Airlines
Mon 1/199:45 pmYYC - STL
2 stops32h 06mMultiple Airlines
Deal found 12/31$444
This Air Canada deal was found by Cheapflights users on 12/31. 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 1/234:05 pmSTL - YYC
1 stop9h 09mAir Canada
Sat 1/315:35 amYYC - STL
1 stop8h 54mAir Canada
Deal found 12/31$493
This United Airlines deal was found by Cheapflights users on 1/1. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/212:45 pmSTL - YYC
1 stop8h 08mUnited Airlines
Thu 1/226:15 amYYC - STL
1 stop9h 40mUnited Airlines
Deal found 1/1$499
This American Airlines deal was found by Cheapflights users on 12/31. 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.
Sat 2/146:36 pmSTL - YYC
1 stop19h 24mAmerican Airlines
Sat 2/216:30 amYYC - STL
2 stops13h 42mAmerican Airlines
Deal found 12/31$357
This American Airlines deal was found by Cheapflights users on 1/1. 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.
Tue 2/249:23 amSTL - YYC
2 stops13h 33mAmerican Airlines
Sat 2/286:30 amYYC - STL
2 stops13h 42mAmerican Airlines
Deal found 1/1$372
This Kiwi.com deal was found by Cheapflights users on 1/1. 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.
Wed 1/213:46 pmSTL - YYC
2 stops21h 34mMultiple Airlines
Sun 1/256:30 amYYC - STL
1 stop7h 08mMultiple Airlines
Deal found 1/1$461
This United Airlines deal was found by Cheapflights users on 1/1. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/182:45 pmSTL - YYC
1 stop8h 08mUnited Airlines
Wed 1/216:15 amYYC - STL
1 stop6h 01mUnited Airlines
Deal found 1/1$499
This Kiwi.com deal was found by Cheapflights users on 12/31. 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.
Sat 1/107:00 amSTL - YYC
1 stop17h 20mMultiple Airlines
Sat 1/179:45 pmYYC - STL
2 stops32h 06mMultiple Airlines
Deal found 12/31$486
This United Airlines deal was found by Cheapflights users on 1/1. 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 Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/188:45 amSTL - YYC
1 stop14h 08mUnited Airlines
Thu 1/2212:37 pmYYC - STL
1 stop7h 36mUnited Airlines
Deal found 1/1$499
This American Airlines deal was found by Cheapflights users on 12/31. 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.
Sat 1/1011:55 amSTL - YYC
1 stop11h 03mAmerican Airlines
Sat 1/171:40 pmYYC - STL
1 stop22h 23mAmerican Airlines
Deal found 12/31$487

Find 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 January 2, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$338
(American Airlines)

Popular in

December

Cheapest in

November

Average price

$362
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, 10% potential price rise
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 2, 2026.
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

Wed 1/28

6:44 pm-12:48 pm

1 stop19h 04m

Calgary

Wed 2/4

1:40 pm-10:20 am

1 stop19h 40m

$338

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 2/14

6:36 pm-1:00 pm

1 stop19h 24m

Calgary

Sat 2/21

6:30 am-9:12 pm

2 stops13h 42m

$357

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 2/24

9:23 am-9:56 pm

2 stops13h 33m

Calgary

Sat 2/28

6:30 am-9:12 pm

2 stops13h 42m

$372

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 1/15

1:35 pm-11:05 pm

1 stop10h 30m

Calgary

Mon 1/19

9:45 pm-6:51 am

2 stops32h 06m

$444

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/21

3:46 pm-12:20 pm

2 stops21h 34m

Calgary

Sun 1/25

6:30 am-2:38 pm

1 stop7h 08m

$461

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/10

7:00 am-11:20 pm

1 stop17h 20m

Calgary

Sat 1/17

9:45 pm-6:51 am

2 stops32h 06m

$486

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/10

11:55 am-9:58 pm

1 stop11h 03m

Calgary

Sat 1/17

1:40 pm-1:03 pm

1 stop22h 23m

$487

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 1/23

4:05 pm-12:14 am

1 stop9h 09m

Calgary

Sat 1/31

5:35 am-3:29 pm

1 stop8h 54m

$493

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/21

2:45 pm-9:53 pm

1 stop8h 08m

Calgary

Thu 1/22

6:15 am-4:55 pm

1 stop9h 40m

$499

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

2:45 pm-9:53 pm

1 stop8h 08m

Calgary

Wed 1/21

6:15 am-1:16 pm

1 stop6h 01m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/31

Showing 1-10 of 11 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 January.
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 December 26, 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 August is currently the most expensive (average of $457). 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.

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

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 January 2, 2026.
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
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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
8,021 reviews
Delta
7.9
Good
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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
9,132 reviews
Delta
7.9
Good
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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
11,074 reviews
Delta
7.9
Good
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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
3,230 reviews
Delta
7.9
Good
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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
10,574 reviews
Delta
7.9
Good
8,021 reviews

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

7.9

Overall

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.

  • How long is the flight from St. Louis to Calgary?

    American Airlines can get you from St. Louis to Calgary in just under 19h 04m. Your travel time can differ by up to . The distance between St. Louis and Calgary is about 1427 mi.

  • 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 $168. Other airlines that can offer you cheap pricing are Air Canada, from $178, and United Airlines, from $303. Users have found that Delta is 68% cheaper than the other options available to this destination.

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

    $166 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Delta, with prices starting from $171 and $235, 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 $158). Flying from St. Louis to Calgary in August is currently the most expensive (average of $457). 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 January 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$179Average$686FlexibilityNo cancel feeOn-time67%
DeltaCheapest$190Average$560FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$328Average$661FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$383Average$544FlexibilityNo cancel feeOn-time71%
WestJetCheapest$490Average$638FlexibilityNo cancel feeOn-time60%

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