$141+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
Mar 18 — Mar 251
1 adult, Economy
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Find cheap flights from St. Louis to Calgary with Cheapflights
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”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from St. Louis to Calgary
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Best
Last-minute
One-way
Cheapest flights from St. Louis to CalgaryExplore 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 February 16, 2026.
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 February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 5/119:55 pm
STL
- YYC
1 stop20h 40m
Multiple Airlines
Sat 5/167:00 am
YYC
- STL
2 stops26h 30m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/3012:14 pm
STL
- YYC
1 stop24h 48m
Multiple Airlines
Mon 4/67:35 pm
YYC
- STL
2 stops37h 13m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 3/3112:14 pm
STL
- YYC
1 stop11h 46m
Multiple Airlines
Tue 4/77:55 am
YYC
- STL
2 stops24h 53m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 2/14. 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 8/158:35 am
STL
- YYC
1 stop15h 54m
American Airlines
Sat 8/226:29 am
YYC
- STL
1 stop16h 22m
American Airlines
Deal found 2/14![American Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Tue 3/107:35 pm
YYC
- STL
1 stop14h 44m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$352
This American Airlines deal was found by Cheapflights users on 2/14. 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 9/267:44 am
STL
- YYC
1 stop16h 36m
American Airlines
Sat 10/36:30 am
YYC
- STL
1 stop12h 33m
American Airlines
Deal found 2/14![American Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/28:22 pm
STL
- YYC
1 stop23h 47m
Multiple Airlines
Thu 3/53:00 pm
YYC
- STL
2 stops19h 19m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Thu 3/124:15 pm
YYC
- STL
1 stop18h 04m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$367
This American Airlines deal was found by Cheapflights users on 2/15. 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 3/45:12 am
STL
- YYC
1 stop7h 32m
American Airlines
Fri 3/61:40 pm
YYC
- STL
1 stop19h 33m
American Airlines
Deal found 2/15![American Airlines logo]()
$383
Best flights from St. Louis to CalgaryDiscover 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 February 16, 2026.
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 February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 3/3112:14 pm
STL
- YYC
1 stop11h 46m
Multiple Airlines
Tue 4/77:55 am
YYC
- STL
2 stops24h 53m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 2/13. 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 7/156:00 am
STL
- YYC
1 stop18h 42m
American Airlines
Wed 7/226:15 am
YYC
- STL
1 stop16h 27m
American Airlines
Deal found 2/13![American Airlines logo]()
$471
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Mon 3/24:30 pm
STL
- YYC
1 stop6h 23m
United Airlines
Wed 3/46:15 am
YYC
- STL
1 stop5h 59m
United Airlines
Deal found 2/12![United Airlines logo]()
$491
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Thu 3/124:15 pm
YYC
- STL
1 stop18h 04m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Mon 3/210:11 pm
STL
- YYC
1 stop14h 46m
Multiple Airlines
Thu 3/510:50 am
YYC
- STL
2 stops23h 29m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$377
This American Airlines deal was found by Cheapflights users on 2/14. 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 5/195:20 am
STL
- YYC
1 stop7h 23m
American Airlines
Tue 6/21:40 pm
YYC
- STL
1 stop9h 14m
American Airlines
Deal found 2/14![American Airlines logo]()
$488
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/3012:14 pm
STL
- YYC
1 stop24h 48m
Multiple Airlines
Mon 4/67:00 pm
YYC
- STL
1 stop27h 59m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$440
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 3/2112:14 pm
STL
- YYC
1 stop11h 46m
Multiple Airlines
Sun 3/297:35 pm
YYC
- STL
1 stop14h 44m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 3/33:49 pm
STL
- YYC
2 stops28h 20m
Multiple Airlines
Thu 3/512:30 am
YYC
- STL
1 stop10h 19m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$468
This Kiwi.com deal was found by Cheapflights users on 2/13. 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 5/197:56 pm
STL
- YYC
1 stop18h 14m
Multiple Airlines
Mon 6/112:30 am
YYC
- STL
1 stop11h 52m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$470
Last-minute flights from St. Louis to CalgaryDiscover last-minute flight deals from St. Louis to Calgary. Data last updated February 16, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Calgary. Data last updated February 16, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/28:22 pm
STL
- YYC
1 stop23h 47m
Multiple Airlines
Thu 3/53:00 pm
YYC
- STL
2 stops19h 19m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Mon 3/24:13 pm
STL
- YYC
1 stop6h 43m
American Airlines
Thu 3/51:40 pm
YYC
- STL
1 stop9h 08m
American Airlines
Deal found 2/12![American Airlines logo]()
$428
This American Airlines deal was found by Cheapflights users on 2/13. 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 3/39:35 am
STL
- YYC
1 stop13h 21m
American Airlines
Fri 3/61:40 pm
YYC
- STL
1 stop23h 10m
American Airlines
Deal found 2/13![American Airlines logo]()
$423
This American Airlines deal was found by Cheapflights users on 2/15. 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 3/45:12 am
STL
- YYC
1 stop7h 32m
American Airlines
Fri 3/61:40 pm
YYC
- STL
1 stop19h 33m
American Airlines
Deal found 2/15![American Airlines logo]()
$383
This Kiwi.com deal was found by Cheapflights users on 2/14. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Tue 3/107:35 pm
YYC
- STL
1 stop14h 44m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Thu 3/124:15 pm
YYC
- STL
1 stop18h 04m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 3/2112:14 pm
STL
- YYC
1 stop11h 46m
Multiple Airlines
Sun 3/2911:30 pm
YYC
- STL
2 stops34h 49m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 3/3012:14 pm
STL
- YYC
1 stop24h 48m
Multiple Airlines
Mon 4/67:35 pm
YYC
- STL
2 stops37h 13m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 2/14. 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 3/3112:14 pm
STL
- YYC
1 stop11h 46m
Multiple Airlines
Tue 4/77:55 am
YYC
- STL
2 stops24h 53m
Multiple Airlines
Deal found 2/14![Multiple Airlines logo]()
$329
One-way flights from St. Louis to CalgarySearch for one-way flight options from St. Louis to Calgary. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
Search for one-way flight options from St. Louis to Calgary. Find affordable one-way fares based on user searches. Data last updated February 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/15. 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.
Mon 3/92:09 pm
STL
- YYC
1 stop22h 34m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 2/13. 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.
Mon 5/188:12 pm
STL
- YYC
2 stops27h 03m
Multiple Airlines
Deal found 2/13![Multiple Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 2/12. 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 3/298:06 pm
STL
- YYC
3 stops39h 59m
Multiple Airlines
Deal found 2/12![Multiple Airlines logo]()
$212
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 6/92:17 pm
STL
- YYC
2 stops20h 33m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 2/15. 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 6/123:48 pm
STL
- YYC
1 stop26h 22m
Multiple Airlines
Deal found 2/15![Multiple Airlines logo]()
$256
This Alaska Airlines deal was found by Cheapflights users on 2/15. 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.
Wed 6/106:20 pm
STL
- YYC
2 stops17h 12m
Alaska Airlines
Deal found 2/15![Alaska Airlines logo]()
$257
This Delta deal was found by Cheapflights users on 2/14. 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.
Mon 3/96:29 am
STL
- YYC
2 stops13h 43m
Delta
Deal found 2/14![Delta logo]()
$260
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 February 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $322 (Kiwi.com) |
One-way from | $141 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $480 |
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 February 16, 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
Tue 3/31
12:14 pm-11:00 pm
1 stop11h 46m
Calgary
Tue 4/7
7:55 am-9:48 am
2 stops24h 53m
$329
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Mon 3/9
2:09 pm-11:43 am
1 stop22h 34m
Calgary
Thu 3/12
4:15 pm-11:19 am
1 stop18h 04m
$367
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Mon 3/2
10:11 pm-11:57 am
1 stop14h 46m
Calgary
Thu 3/5
10:50 am-11:19 am
2 stops23h 29m
$377
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Mon 3/30
12:14 pm-12:02 pm
1 stop24h 48m
Calgary
Mon 4/6
7:00 pm-11:59 pm
1 stop27h 59m
$440
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Sat 3/21
12:14 pm-11:00 pm
1 stop11h 46m
Calgary
Sun 3/29
7:35 pm-11:19 am
1 stop14h 44m
$464
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Tue 3/3
3:49 pm-7:09 pm
2 stops28h 20m
Calgary
Thu 3/5
12:30 am-11:49 am
1 stop10h 19m
$468
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Tue 5/19
7:56 pm-1:10 pm
1 stop18h 14m
Calgary
Mon 6/1
12:30 am-1:22 pm
1 stop11h 52m
$470
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Wed 7/15
6:00 am-11:42 pm
1 stop18h 42m
Calgary
Wed 7/22
6:15 am-11:42 pm
1 stop16h 27m
$471
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Tue 5/19
5:20 am-11:43 am
1 stop7h 23m
Calgary
Tue 6/2
1:40 pm-11:54 pm
1 stop9h 14m
$488
St. LouisCalgary
STL - YYC
STLYYC
Lambert-St Louis
Mon 3/2
4:30 pm-9:53 pm
1 stop6h 23m
Calgary
Wed 3/4
6:15 am-1:14 pm
1 stop5h 59m
$491
Showing 1-10 of 17 results
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
STL-YYC
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 February 13, 2026.
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, April is the cheapest month in which you can book a flight from St. Louis to Calgary (average of $169). Flying from St. Louis to Calgary in March is currently the most expensive (average of $556). 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 February 16, 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.
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Food
7.2
Comfort
7.9
Crew
8.5
Entertainment
7.8
Overall
7.9
Boarding
8.1
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
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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 February 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$589 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$215 | Average$632 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$291 | Average$648 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$398 | Average$556 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$490 | Average$639 | FlexibilityNo cancel fee | On-time60% |