Calgary

$177+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
STL — YYC
May 1 — May 81
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1. Tell us where you want to go

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Cheap flight deals from St. Louis to Calgary

Cheapest flights from St. Louis to Calgary
Explore the most affordable flight options available from St. Louis to Calgary. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.

This Booking.com deal was found by Cheapflights users on 3/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:05 pm
STL
-
YYC
1 stop9h 27m
Air Canada
Tue 5/1910:30 am
YYC
-
STL
1 stop8h 39m
Air Canada
Deal found 3/28$364
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 6/28:08 pm
STL
-
YYC
2 stops26h 52m
Multiple Airlines
Tue 6/97:00 am
YYC
-
STL
1 stop9h 30m
Multiple Airlines
Deal found 3/30$374
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 6/19:21 pm
STL
-
YYC
1 stop25h 39m
Multiple Airlines
Tue 6/97:00 am
YYC
-
STL
1 stop9h 30m
Multiple Airlines
Deal found 3/30$382
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 8/105:33 pm
STL
-
YYC
1 stop18h 27m
Multiple Airlines
Tue 8/187:00 am
YYC
-
STL
1 stop9h 30m
Multiple Airlines
Deal found 3/29$389
This Kiwi.com deal was found by Cheapflights users on 3/29. 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 5/126:51 pm
STL
-
YYC
2 stops26h 19m
Multiple Airlines
Tue 5/197:00 am
YYC
-
STL
1 stop24h 55m
Multiple Airlines
Deal found 3/29$390
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/154:40 pm
STL
-
YYC
1 stop6h 08m
United Airlines
Wed 9/239:30 am
YYC
-
STL
1 stop6h 01m
United Airlines
Deal found 3/31$410
This Flightnetwork deal was found by Cheapflights users on 3/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/137:05 am
STL
-
YYC
1 stop13h 28m
Air Canada
Wed 5/206:05 pm
YYC
-
STL
1 stop17h 01m
Air Canada
Deal found 3/29$411
This United Airlines deal was found by Cheapflights users on 3/31. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/25:10 am
STL
-
YYC
1 stop14h 20m
United Airlines
Sun 9/139:30 am
YYC
-
STL
1 stop13h 20m
United Airlines
Deal found 3/31$419
This Delta deal was found by Cheapflights users on 3/31. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:10 pm
STL
-
YYC
2 stops11h 56m
Delta
Wed 9/232:00 pm
YYC
-
STL
1 stop9h 36m
Delta
Deal found 3/31$420

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 April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$364
(Booking.com)

One-way from

$177
(American Airlines)

Popular in

March

Cheapest in

November

Average price

$504
Provider with most accurate pricing for Lambert-St Louis-Calgary flight deals.
Provider most trusted by Cheapflights users for Lambert-St Louis-Calgary flights.
From Lambert-St Louis to Calgary
One-way flight from Lambert-St Louis to Calgary
Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 1, 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

Price

Cheapest round-trip
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 8/14

1:36 pm-6:30 pm

1 stop5h 54m

Calgary

Fri 8/21

9:30 am-4:31 pm

1 stop6h 01m

$427

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 7/21

2:28 pm-10:59 pm

1 stop9h 31m

Calgary

Wed 8/5

12:33 pm-12:37 am

1 stop11h 04m

$428

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 8/20

1:36 pm-6:30 pm

1 stop5h 54m

Calgary

Sat 8/29

8:30 am-3:38 pm

1 stop6h 08m

$428

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 8/14

2:15 pm-11:06 pm

1 stop9h 51m

Calgary

Fri 8/21

7:15 am-11:01 pm

2 stops14h 46m

$437

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 8/10

2:15 pm-11:06 pm

1 stop9h 51m

Calgary

Sat 8/15

7:15 am-11:01 pm

2 stops14h 46m

$437

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 7/13

2:28 pm-10:59 pm

1 stop9h 31m

Calgary

Fri 7/24

12:33 pm-12:37 am

1 stop11h 04m

$456

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 7/22

2:28 pm-10:59 pm

1 stop9h 31m

Calgary

Mon 8/10

7:15 am-6:00 pm

1 stop9h 45m

$488

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 9/23

12:10 pm-11:06 pm

2 stops11h 56m

Calgary

Mon 9/28

7:15 am-11:01 pm

2 stops14h 46m

$494

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 8/7

2:28 pm-10:59 pm

1 stop9h 31m

Calgary

Sun 8/16

7:15 am-6:00 pm

1 stop9h 45m

$527

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 7/27

2:28 pm-10:59 pm

1 stop9h 31m

Calgary

Sun 8/2

12:33 pm-12:37 am

1 stop11h 04m

$527

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/28

Showing 1-10 of 13 resultsSorted by cheapest first
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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 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.
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 March 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 April 1, 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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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.

Comfort

7.9

Crew

8.5

Overall

7.9

Boarding

8.1

Food

7.2

Entertainment

7.8

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?

    United Airlines and Delta can get you from St. Louis to Calgary in just under 5h 54m. Your travel time can differ by up to 3h 37m. The distance between St. Louis and Calgary is about 1427 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $178. Other airlines that can offer you cheap pricing are United Airlines, from $213, and Delta, from $291. Users have found that Air Canada is 69% cheaper than the other options available to this destination.

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

    $171 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from $173 and $245, 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, 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.

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.

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 April 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$178Average$597FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$213Average$640FlexibilityNo cancel feeOn-time69%
DeltaCheapest$291Average$632FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$398Average$576FlexibilityNo cancel feeOn-time71%
WestJetCheapest$490Average$636FlexibilityNo cancel feeOn-time60%

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