$167+ Cheap flights from Calgary (YYC) to St. Louis (STL)
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 9/29. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Calgary to St. Louis 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 Calgary to St. Louis
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Best
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Cheapest flights from Calgary to St. LouisExplore 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 September 10, 2026.
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 September 10, 2026.
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/266:35 am -
1 stop9h 12m
Tue 9/296:15 am -
1 stop15h 27m
Deal found 9/8![Delta logo]()
$386
This Delta deal was found by Cheapflights users on 9/8. 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.
Tue 10/206:35 am -
1 stop5h 57m
Wed 10/212:22 pm -
1 stop9h 48m
Deal found 9/8![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Tue 10/206:00 am -
1 stop13h 36m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$397
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Tue 10/137:40 pm -
1 stop17h 20m
Sun 11/14:05 pm -
1 stop9h 01m
Deal found 9/8![Air Canada logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/1112:20 am -
1 stop16h 20m
Mon 10/196:35 pm -
2 stops24h 35m
Deal found 9/7![Multiple Airlines logo]()
$426
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Wed 10/147:40 pm -
1 stop17h 20m
Mon 11/304:05 pm -
1 stop9h 01m
Deal found 9/7![Air Canada logo]()
$441
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/251:51 pm -
1 stop20h 00m
Sun 11/16:00 am -
1 stop8h 11m
Deal found 9/10![American Airlines logo]()
$444
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/139:00 pm -
2 stops19h 40m
Sun 11/110:25 am -
1 stop9h 30m
Deal found 9/8![Multiple Airlines logo]()
$460
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/106:00 am -
1 stop13h 36m
Sun 10/186:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$461
Best flights from Calgary to St. LouisDiscover carefully curated flight deals from Calgary to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Calgary to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/266:35 am -
1 stop9h 12m
Tue 9/296:15 am -
1 stop15h 27m
Deal found 9/8![Delta logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Tue 10/206:00 am -
1 stop13h 36m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/139:00 pm -
2 stops19h 40m
Sun 11/110:25 am -
1 stop9h 30m
Deal found 9/8![Multiple Airlines logo]()
$460
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Tue 10/209:20 am -
2 stops11h 01m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/7![Air Canada logo]()
$472
This American Airlines deal was found by Cheapflights users on 9/6. 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 10/106:45 am -
1 stop6h 45m
Sun 10/187:29 am -
1 stop6h 22m
Deal found 9/6![American Airlines logo]()
$479
This Delta deal was found by Cheapflights users on 9/8. 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.
Tue 10/206:35 am -
1 stop5h 57m
Wed 10/212:22 pm -
1 stop9h 48m
Deal found 9/8![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/106:00 am -
1 stop13h 36m
Sun 10/186:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/1312:20 am -
1 stop16h 20m
Mon 11/303:04 pm -
2 stops22h 41m
Deal found 9/7![Multiple Airlines logo]()
$471
Last-minute flights from Calgary to St. LouisDiscover last-minute flight deals from Calgary to St. Louis. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Calgary to St. Louis. Data last updated September 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/8. 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.
Sat 9/266:35 am -
1 stop9h 12m
Tue 9/296:15 am -
1 stop15h 27m
Deal found 9/8![Delta logo]()
$386
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Sat 10/106:00 am -
1 stop13h 36m
Sun 10/186:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 9/7. 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 10/1112:20 am -
1 stop16h 20m
Mon 10/196:35 pm -
2 stops24h 35m
Deal found 9/7![Multiple Airlines logo]()
$426
This Air Canada deal was found by Cheapflights users on 9/8. 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.
Tue 10/137:40 pm -
1 stop17h 20m
Sun 11/14:05 pm -
1 stop9h 01m
Deal found 9/8![Air Canada logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 9/8. 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 10/139:00 pm -
2 stops19h 40m
Sun 11/110:25 am -
1 stop9h 30m
Deal found 9/8![Multiple Airlines logo]()
$460
This Air Canada deal was found by Cheapflights users on 9/7. 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.
Wed 10/147:40 pm -
1 stop17h 20m
Mon 11/304:05 pm -
1 stop9h 01m
Deal found 9/7![Air Canada logo]()
$441
This Delta deal was found by Cheapflights users on 9/8. 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.
Tue 10/206:35 am -
1 stop5h 57m
Wed 10/212:22 pm -
1 stop9h 48m
Deal found 9/8![Delta logo]()
$392
This United Airlines deal was found by Cheapflights users on 9/6. 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.
Tue 10/206:00 am -
1 stop13h 36m
Wed 10/216:00 am -
1 stop6h 28m
Deal found 9/6![United Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 9/10. 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.
Sun 10/251:51 pm -
1 stop20h 00m
Sun 11/16:00 am -
1 stop8h 11m
Deal found 9/10![American Airlines logo]()
$444
One-way flights from Calgary to St. LouisSearch for one-way flight options from Calgary to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
Search for one-way flight options from Calgary to St. Louis. Find affordable one-way fares based on user searches. Data last updated September 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/299:00 pm -
2 stops15h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 9/9. 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 9/301:51 pm -
1 stop9h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![American Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/98:00 pm -
3 stops26h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$224
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 9/309:00 pm -
3 stops19h 54m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$226
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/17:25 pm -
2 stops22h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$239
This Air Canada deal was found by Cheapflights users on 9/6. 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 10/97:40 pm -
1 stop17h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/6![Air Canada logo]()
$279
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/99:00 pm -
2 stops11h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![WestJet logo]()
$282
Find 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $386 (Delta) |
One-way from | $167 (Kiwi.com) |
Popular in | June |
Cheapest in | May |
Average price | $482 |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Calgary to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Wed 9/30
1:51 pm-12:27 am
1 stop9h 36m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$201
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Tue 9/29
11:35 pm-5:54 pm
3 stops41h 19m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$246
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Fri 10/9
10:15 am-11:21 pm
1 stop12h 06m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$286
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Sat 9/26
6:35 am-4:47 pm
1 stop9h 12m
Lambert-St Louis
Tue 9/29
6:15 am-8:42 pm
1 stop15h 27m
$386
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Tue 10/20
6:35 am-1:32 pm
1 stop5h 57m
Lambert-St Louis
Wed 10/21
2:22 pm-11:10 pm
1 stop9h 48m
$392
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Tue 10/20
6:00 am-8:36 pm
1 stop13h 36m
Lambert-St Louis
Wed 10/21
6:00 am-11:28 am
1 stop6h 28m
$397
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Wed 10/7
6:30 am-10:59 pm
2 stops15h 29m
Lambert-St Louis
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$434
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Tue 10/13
9:00 pm-5:40 pm
2 stops19h 40m
Lambert-St Louis
Sun 11/1
10:25 am-7:55 pm
1 stop9h 30m
$460
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Sat 10/10
6:00 am-8:36 pm
1 stop13h 36m
Lambert-St Louis
Sun 10/18
6:00 am-11:28 am
1 stop6h 28m
$461
CalgarySt. Louis
YYC Calgary - STL Lambert-St Louis
YYCSTL
Calgary
Tue 10/13
12:20 am-5:40 pm
1 stop16h 20m
Lambert-St Louis
Mon 11/30
3:04 pm-1:45 pm
2 stops22h 41m
$471
Showing 1-10 of 15 resultsSorted by cheapest first
- 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.
YYC-STL
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 Calgary to St. Louis
What is the cheapest month to book a flight from Calgary to St. Louis?
Currently, May is the cheapest month in which you can book a flight from Calgary to St. Louis (average of $320). Flying from Calgary to St. Louis in June is currently the most expensive (average of $694). 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 Calgary to St. Louis?
Airfare is below average for this route at the moment.
Calgary to St. Louis flights typically cost between $447 and $503 in September.The cheapest round-trip price found within the last 5 days was $386 on Delta (Sep 26-Sep 29).
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Edwardsville
Glencoe
Chesterfield
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