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Cheap flights from St. Louis to Calgary from $176

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Calgary departing on 10/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Calgary

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:08 pm - 2:45 pm
STL
-
YYC
19h 37m
1 stop
Multiple Airlines Logo
8:45 am - 7:23 pm
YYC
-
STL
9h 38m
1 stop
$350Multiple Airlines
Tue, Aug 25 - Tue, Sep 1
Multiple Airlines Logo
8:10 pm - 2:45 pm
STL
-
YYC
19h 35m
1 stop
Multiple Airlines Logo
7:00 am - 9:40 am
YYC
-
STL
25h 40m
1 stop
$367Multiple Airlines
Wed, Oct 14 - Tue, Oct 20
Multiple Airlines Logo
10:35 am - 11:00 am
STL
-
YYC
25h 25m
1 stop
Multiple Airlines Logo
7:00 am - 9:40 am
YYC
-
STL
25h 40m
1 stop
$373Multiple Airlines
Thu, Oct 15 - Tue, Oct 20
Multiple Airlines Logo
10:35 am - 11:00 am
STL
-
YYC
25h 25m
1 stop
Multiple Airlines Logo
7:00 am - 9:40 am
YYC
-
STL
25h 40m
1 stop
$385Multiple Airlines
Thu, Oct 15 - Mon, Oct 19
Multiple Airlines Logo
10:35 am - 3:15 pm
STL
-
YYC
29h 40m
2 stops
Multiple Airlines Logo
12:20 am - 9:40 am
YYC
-
STL
8h 20m
1 stop
$387Multiple Airlines
Sat, Sep 19 - Fri, Sep 25
Multiple Airlines Logo
8:08 pm - 2:45 pm
STL
-
YYC
19h 37m
1 stop
Multiple Airlines Logo
9:00 pm - 9:40 am
YYC
-
STL
11h 40m
2 stops
$388Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
10:35 am - 11:00 am
STL
-
YYC
25h 25m
1 stop
Multiple Airlines Logo
7:00 am - 9:40 am
YYC
-
STL
25h 40m
1 stop
$390Multiple Airlines
Wed, Sep 30 - Sun, Oct 4
Multiple Airlines Logo
4:57 pm - 3:15 pm
STL
-
YYC
23h 18m
2 stops
Multiple Airlines Logo
8:45 am - 7:23 pm
YYC
-
STL
9h 38m
1 stop
$397Multiple Airlines
Mon, Aug 10 - Mon, Aug 31
Multiple Airlines Logo
10:35 am - 11:00 am
STL
-
YYC
25h 25m
1 stop
Multiple Airlines Logo
12:20 am - 9:40 am
YYC
-
STL
8h 20m
1 stop
$398Multiple Airlines
Wed, Oct 7 - Sat, Oct 10
Multiple Airlines Logo
10:35 am - 11:00 am
STL
-
YYC
25h 25m
1 stop
Multiple Airlines Logo
9:00 pm - 9:40 am
YYC
-
STL
11h 40m
2 stops
$399Multiple Airlines
Wed, Sep 30 - Sun, Oct 4

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Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
Oct 15
STL12:10 pmLambert-St Louis
10h 17m
1 stop
YYC9:27 pmCalgary
Oct 20
YYC9:20 amCalgary
9h 40m
2 stops
STL8:00 pmLambert-St Louis
$438
Air Canada
Aug 29
STL8:55 amLambert-St Louis
9h 16m
1 stop
YYC5:11 pmCalgary
Sep 4
YYC9:25 amCalgary
8h 17m
1 stop
STL6:42 pmLambert-St Louis
$442
Air Canada
Aug 31
STL12:10 pmLambert-St Louis
10h 22m
1 stop
YYC9:32 pmCalgary
Sep 2
YYC9:25 amCalgary
8h 17m
1 stop
STL6:42 pmLambert-St Louis
$447

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Sep 9
STL5:00 pmLambert-St Louis
7h 06m
1 stop
YYC11:06 pmCalgary
Sep 16
YYC12:33 pmCalgary
11h 01m
1 stop
STL12:34 amLambert-St Louis
$436
Delta
Jun 29
STL2:28 pmLambert-St Louis
9h 33m
1 stop
YYC11:01 pmCalgary
Jul 2
YYC6:45 amCalgary
9h 01m
1 stop
STL4:46 pmLambert-St Louis
$455
Delta
Sep 15
STL11:16 amLambert-St Louis
12h 45m
2 stops
YYC11:01 pmCalgary
Sep 23
YYC6:45 amCalgary
9h 08m
1 stop
STL4:53 pmLambert-St Louis
$462

momondo 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, momondo users made 832,500 searches. Data last updated June 18, 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

Tue 8/25

8:08 pm-2:45 pm

1 stop19h 37m

Calgary

Tue 9/1

8:45 am-7:23 pm

1 stop9h 38m

$350

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 10/14

8:10 pm-2:45 pm

1 stop19h 35m

Calgary

Tue 10/20

7:00 am-9:40 am

1 stop25h 40m

$367

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 10/15

10:35 am-11:00 am

1 stop25h 25m

Calgary

Tue 10/20

7:00 am-9:40 am

1 stop25h 40m

$373

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 10/15

10:35 am-11:00 am

1 stop25h 25m

Calgary

Mon 10/19

7:00 am-9:40 am

1 stop25h 40m

$385

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 9/19

10:35 am-3:15 pm

2 stops29h 40m

Calgary

Fri 9/25

12:20 am-9:40 am

1 stop8h 20m

$387

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 9/1

8:08 pm-2:45 pm

1 stop19h 37m

Calgary

Tue 9/8

9:00 pm-9:40 am

2 stops11h 40m

$388

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 9/30

10:35 am-11:00 am

1 stop25h 25m

Calgary

Sun 10/4

7:00 am-9:40 am

1 stop25h 40m

$390

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 8/10

4:57 pm-3:15 pm

2 stops23h 18m

Calgary

Mon 8/31

8:45 am-7:23 pm

1 stop9h 38m

$397

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 10/7

10:35 am-11:00 am

1 stop25h 25m

Calgary

Sat 10/10

12:20 am-9:40 am

1 stop8h 20m

$398

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 9/30

10:35 am-11:00 am

1 stop25h 25m

Calgary

Sun 10/4

9:00 pm-9:40 am

2 stops11h 40m

$399

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Calgary from

How to get the cheapest flight ticket from St. Louis to Calgary

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Calgary?

What is the cheapest month to fly to Calgary?

The month of April is, on average, the cheapest month to fly to Calgary from St. Louis, with most prices found around $559. If you aren’t able to travel during the month of April, then book flights to Calgary from St. Louis during October instead. Flights to Calgary in October, while not as cheap as those in April, still average around $567.

How far in advance should I book a flight from St. Louis to Calgary?

You are more likely to see cheaper flights to Calgary from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around $660 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from St. Louis for as low as $505 on momondo.

How have St. Louis to Calgary flight prices changed over time?

As of June 2026, prices for St. Louis to Calgary flights are approximately 23% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Calgary

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Calgary according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Calgary (STL to YYC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Calgary

Fastest flight time

5h 43m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 5h 43m
There are no direct flights from St. Louis to Calgary. There are no popular flight routes from St. Louis to Calgary.
Search flight deals

Frequently asked questions about flying from St. Louis to Calgary

  • How far is Lambert-St Louis to Calgary by plane?

    Calgary is 1438.9 mi away from Lambert-St Louis. Flights usually cover this in 5h 43m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Calgary Airport?

    Prices for flights from Lambert-St Louis Airport to Calgary Airport are updated daily.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Calgary Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Calgary Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Calgary Airport.

  • What documentation or ID do you need to fly to Calgary Airport?

    The required travel and health documents for your Calgary Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Calgary Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from St. Louis to Calgary?

Best airlines flying from St. Louis to Calgary

Compare and see reviews for airlines that fly from St. Louis to Calgary with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $200Free CancellationRating
7.1
11,217 reviews
Search Air Canada flights
DeltaPriceFrom $267Free CancellationRating
7.8
8,413 reviews
Search Delta flights
United AirlinesPriceFrom $346Free CancellationRating
7.4
9,861 reviews
Search United Airlines flights
American AirlinesPriceFrom $471Free CancellationRating
7.1
11,695 reviews
Search American Airlines flights
WestJetPriceFrom $505Free CancellationRating
7.2
3,375 reviews
Search WestJet flights

  • United Airlines Flights From St. Louis to Calgary

    United Airlines flies from St. Louis to Calgary around 7 times per week, with 9,860 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from St. Louis to Calgary in the last 72 hours was $346 (round-trip), much lower than the average airfare cost of $692 for United Airlines flights on this route.

Traveling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Banff
Canmore
Lake Louise
Airdrie
Radium Hot Springs
Drumheller
Kananaskis

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Calgary?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from St. Louis to Calgary. momondo saves you time and could save you money on your trip.

Can I find flights from St. Louis to Calgary with flexible booking policies on momondo?

momondo does allow users to show only those flights to Calgary from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Calgary?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from St. Louis to Calgary.

I’m not ready to book a flight from St. Louis to Calgary right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Calgary from St. Louis. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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