$138+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
Sep 11 — Sep 181
Round-trip
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 August 12, 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 August 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 10/78:10 pm -
1 stop19h 35m
Sun 10/117:00 am -
1 stop25h 40m
Deal found 8/8![Multiple Airlines logo]()
$327
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/258:10 pm -
2 stops41h 00m
Thu 10/112:20 am -
1 stop11h 50m
Deal found 8/11![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/252:29 pm -
1 stop8h 21m
Mon 9/289:00 pm -
2 stops11h 00m
Deal found 8/7![Multiple Airlines logo]()
$352
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/142:29 pm -
1 stop8h 21m
Thu 9/1712:20 am -
1 stop7h 40m
Deal found 8/7![Multiple Airlines logo]()
$354
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 9/168:10 pm -
1 stop19h 35m
Tue 9/2210:00 am -
2 stops32h 17m
Deal found 8/8![Multiple Airlines logo]()
$364
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 August 12, 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 August 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/252:29 pm -
1 stop8h 21m
Mon 9/289:00 pm -
2 stops11h 00m
Deal found 8/7![Multiple Airlines logo]()
$352
This FlightHub deal was found by Cheapflights users on 8/7. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:40 am -
1 stop14h 35m
Wed 9/166:35 am -
1 stop15h 41m
Deal found 8/7![WestJet logo]()
$393
This FlightHub deal was found by Cheapflights users on 8/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:55 pm -
1 stop7h 20m
Wed 9/2310:15 am -
1 stop12h 01m
Deal found 8/10![WestJet logo]()
$395
This Trip.com deal was found by Cheapflights users on 8/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:30 am -
1 stop14h 45m
Tue 9/152:15 pm -
1 stop19h 16m
Deal found 8/8![WestJet logo]()
$398
This Trip.com deal was found by Cheapflights users on 8/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:00 am -
1 stop16h 50m
Fri 10/211:00 am -
1 stop21h 29m
Deal found 8/11![WestJet logo]()
$412
This Justfly.com deal was found by Cheapflights users on 8/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:20 am -
2 stops14h 20m
Fri 9/46:45 am -
1 stop15h 41m
Deal found 8/8![WestJet logo]()
$446
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Thu 9/107:05 am -
1 stop11h 05m
Mon 9/1410:15 am -
1 stop12h 01m
Deal found 8/8![WestJet logo]()
$456
Last-minute flights from St. Louis to CalgaryDiscover last-minute flight deals from St. Louis to Calgary. Data last updated August 12, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Calgary. Data last updated August 12, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/136:15 am -
2 stops10h 00m
Sat 9/2612:20 am -
1 stop7h 40m
Deal found 8/8![WestJet logo]()
$392
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Mon 9/142:29 pm -
1 stop8h 21m
Thu 9/1712:20 am -
1 stop7h 40m
Deal found 8/7![Multiple Airlines logo]()
$354
This Justfly.com deal was found by Cheapflights users on 8/7. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:52 pm -
1 stop5h 50m
Wed 9/232:15 pm -
1 stop8h 01m
Deal found 8/7![WestJet logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Wed 9/168:10 pm -
1 stop19h 35m
Tue 9/2210:00 am -
2 stops32h 17m
Deal found 8/8![Multiple Airlines logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/258:10 pm -
2 stops41h 00m
Thu 10/112:20 am -
1 stop11h 50m
Deal found 8/11![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 8/7. 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.
Fri 9/252:29 pm -
1 stop8h 21m
Mon 9/289:00 pm -
2 stops11h 00m
Deal found 8/7![Multiple Airlines logo]()
$352
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 August 12, 2026.
Search for one-way flight options from St. Louis to Calgary. Find affordable one-way fares based on user searches. Data last updated August 12, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:10 pm -
2 stops24h 15m
Deal found 8/10![Multiple Airlines logo]()
$138
This Trip.com deal was found by Cheapflights users on 8/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
1 stop21h 31m
Deal found 8/11![Multiple Airlines logo]()
$146
This American Airlines deal was found by Cheapflights users on 8/7. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:21 am -
1 stop17h 08m
Deal found 8/7![American Airlines logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 8/8. 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.
Sun 9/2710:20 am -
2 stops34h 05m
Deal found 8/8![Multiple Airlines logo]()
$186
This FlightHub deal was found by Cheapflights users on 8/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/166:15 am -
1 stop11h 45m
Deal found 8/10![WestJet logo]()
$191
This Justfly.com deal was found by Cheapflights users on 8/8. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:00 am -
1 stop11h 10m
Deal found 8/8![WestJet logo]()
$192
This FlightHub deal was found by Cheapflights users on 8/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am -
1 stop16h 50m
Deal found 8/10![WestJet logo]()
$194
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 August 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $327 (Kiwi.com) |
One-way from | $138 (Kiwi.com) |
Popular in | February |
Cheapest in | April |
Average price | $690 |
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 August 12, 2026.
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Fri 9/25
2:29 pm-9:50 pm
1 stop8h 21m
Calgary
Mon 9/28
9:00 pm-9:00 am
2 stops11h 00m
$352
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Wed 9/9
6:40 am-8:15 pm
1 stop14h 35m
Calgary
Wed 9/16
6:35 am-11:16 pm
1 stop15h 41m
$393
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Tue 9/15
1:55 pm-8:15 pm
1 stop7h 20m
Calgary
Wed 9/23
10:15 am-11:16 pm
1 stop12h 01m
$395
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Sun 9/6
6:30 am-8:15 pm
1 stop14h 45m
Calgary
Tue 9/15
2:15 pm-10:31 am
1 stop19h 16m
$398
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Fri 9/25
6:00 am-9:50 pm
1 stop16h 50m
Calgary
Fri 10/2
11:00 am-9:29 am
1 stop21h 29m
$412
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Sat 8/29
6:20 am-7:40 pm
2 stops14h 20m
Calgary
Fri 9/4
6:45 am-11:26 pm
1 stop15h 41m
$446
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Thu 9/10
7:05 am-5:10 pm
1 stop11h 05m
Calgary
Mon 9/14
10:15 am-11:16 pm
1 stop12h 01m
$456
Cheapest one-way
Quickest one-way
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Fri 9/11
2:29 pm-9:50 pm
1 stop8h 21m
$154
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Wed 9/16
7:21 am-11:29 pm
1 stop17h 08m
$184
St. LouisCalgary
STL Lambert-St Louis - YYC Calgary
STLYYC
Lambert-St Louis
Wed 9/16
6:15 am-5:00 pm
2 stops11h 45m
$191
Showing 1-10 of 15 resultsSorted by cheapest first
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 August.
| 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
Prices
Airlines
How far ahead should I book a flight from St. Louis to Calgary?
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 86 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 $559). Flying from St. Louis to Calgary in February is currently the most expensive (average of $906). 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?
Airfare is below average for this route at the moment.
St. Louis to Calgary flights typically cost between $551 and $758 in October.The cheapest round-trip price found within the last 5 days was $327 on Multiple Airlines (Oct 7-Oct 11).
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 August 12, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andWestJet 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.
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Entertainment
7.8
Boarding
8.1
Comfort
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
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.
Traveling to a place near Calgary?
Book flights to Calgary if you plan to visit one of these locationsCanmore
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Other flights to Calgary
Explore flights to Calgary departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 12, 2026.
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Find flights from St. Louis to Calgary, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Calgary flights
Browse other St. Louis and Calgary flight options. Last updated on August 12, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on August 12, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 August 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$252 | Average$778 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$267 | Average$645 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$434 | Average$684 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$483 | Average$713 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$538 | Average$677 | FlexibilityNo cancel fee | On-time71% |