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Cheap flights from St. Louis to Calgary from $124

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 12/13. 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
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:43 pm - 3:15 pmSTL-YYC
20h 32m2 stops
Multiple Airlines Logo
12:30 am - 9:47 amYYC-STL
8h 17m1 stop
$317Multiple Airlines
Find Deal
Wed, Jan 28 - Sat, Jan 31
Multiple Airlines Logo
5:11 pm - 9:19 pmSTL-YYC
29h 08m1 stop
Multiple Airlines Logo
6:30 am - 7:41 pmYYC-STL
12h 11m2 stops
$338Multiple Airlines
Find Deal
Wed, Jan 28 - Sun, Feb 1
American Airlines Logo
6:44 pm - 12:48 pmSTL-YYC
19h 04m1 stop
American Airlines Logo
1:40 pm - 1:03 pmYYC-STL
22h 23m1 stop
$351American Airlines
Find Deal
Wed, Jan 28 - Sun, Feb 1
Multiple Airlines Logo
4:13 pm - 11:44 amSTL-YYC
44h 31m2 stops
Multiple Airlines Logo
12:30 am - 9:47 amYYC-STL
8h 17m1 stop
$384Multiple Airlines
Find Deal
Sun, Nov 30 - Sat, Dec 6
American Airlines Logo
6:00 am - 9:58 pmSTL-YYC
16h 58m2 stops
American Airlines Logo
6:30 am - 11:59 pmYYC-STL
16h 29m2 stops
$401American Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 24
United Airlines Logo
6:30 am - 11:35 amSTL-YYC
6h 05m1 stop
United Airlines Logo
12:37 pm - 10:45 pmYYC-STL
9h 08m1 stop
$550United Airlines
Find Deal
Sat, Nov 15 - Wed, Nov 19
Delta Logo
6:00 am - 1:53 pmSTL-YYC
8h 53m1 stop
Delta Logo
7:45 am - 6:57 pmYYC-STL
10h 12m1 stop
$555Delta
Find Deal
Fri, Nov 14 - Mon, Nov 17
Alaska Airlines Logo
7:00 am - 6:17 pmSTL-YYC
12h 17m1 stop
Alaska Airlines Logo
6:55 pm - 11:56 pmYYC-STL
28h 01m1 stop
$557Alaska Airlines
Find Deal
Tue, Mar 10 - Wed, Mar 11
Delta Logo
6:00 am - 1:53 pmSTL-YYC
8h 53m1 stop
Delta Logo
7:45 am - 11:23 pmYYC-STL
14h 38m2 stops
$560Delta
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Thu, Nov 20 - Sun, Nov 23
United Airlines Logo
6:30 am - 11:35 amSTL-YYC
6h 05m1 stop
United Airlines Logo
2:13 pm - 9:54 pmYYC-STL
6h 41m1 stop
$603United Airlines
Find Deal
Fri, Nov 14 - Fri, Nov 14

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Jan 28
STL6:44 pmLambert-St Louis
19h 04m
1 stop
YYC12:48 pmCalgary
Feb 1
YYC1:40 pmCalgary
22h 23m
1 stop
STL1:03 pmLambert-St Louis
$351
Find similar
American Airlines
Jan 14
STL6:00 amLambert-St Louis
16h 58m
2 stops
YYC9:58 pmCalgary
Jan 24
YYC6:30 amCalgary
16h 29m
2 stops
STL11:59 pmLambert-St Louis
$401
Find similar
American Airlines
Jan 14
STL6:00 amLambert-St Louis
16h 58m
2 stops
YYC9:58 pmCalgary
Jan 24
YYC1:40 pmCalgary
27h 34m
1 stop
STL6:14 pmLambert-St Louis
$426
Find similar

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Nov 14
STL6:00 amLambert-St Louis
8h 53m
1 stop
YYC1:53 pmCalgary
Nov 17
YYC7:45 amCalgary
10h 12m
1 stop
STL6:57 pmLambert-St Louis
$555
Find similar
Delta
Nov 20
STL6:00 amLambert-St Louis
8h 53m
1 stop
YYC1:53 pmCalgary
Nov 23
YYC7:45 amCalgary
14h 38m
2 stops
STL11:23 pmLambert-St Louis
$560
Find similar
Delta
Nov 14
STL6:34 amLambert-St Louis
6h 17m
1 stop
YYC11:51 amCalgary
Nov 17
YYC12:41 pmCalgary
11h 05m
1 stop
STL12:46 amLambert-St Louis
$561
Find similar

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 November 4, 2025.
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

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/28

7:43 pm-3:15 pm

2 stops20h 32m

Calgary

Sat 1/31

12:30 am-9:47 am

1 stop8h 17m

$317

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/28

5:11 pm-9:19 pm

1 stop29h 08m

Calgary

Sun 2/1

6:30 am-7:41 pm

2 stops12h 11m

$338

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/28

6:44 pm-12:48 pm

1 stop19h 04m

Calgary

Sun 2/1

1:40 pm-1:03 pm

1 stop22h 23m

$351

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 11/30

4:13 pm-11:44 am

2 stops44h 31m

Calgary

Sat 12/6

12:30 am-9:47 am

1 stop8h 17m

$384

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/14

6:00 am-9:58 pm

2 stops16h 58m

Calgary

Sat 1/24

6:30 am-11:59 pm

2 stops16h 29m

$401

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 11/15

6:30 am-11:35 am

1 stop6h 05m

Calgary

Wed 11/19

12:37 pm-10:45 pm

1 stop9h 08m

$550

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 11/14

6:00 am-1:53 pm

1 stop8h 53m

Calgary

Mon 11/17

7:45 am-6:57 pm

1 stop10h 12m

$555

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 3/10

7:00 am-6:17 pm

1 stop12h 17m

Calgary

Wed 3/11

6:55 pm-11:56 pm

1 stop28h 01m

$557

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 11/20

6:00 am-1:53 pm

1 stop8h 53m

Calgary

Sun 11/23

7:45 am-11:23 pm

2 stops14h 38m

$560

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 11/14

6:30 am-11:35 am

1 stop6h 05m

Calgary

Fri 11/14

2:13 pm-9:54 pm

1 stop6h 41m

$603

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 January is, on average, the cheapest month to fly to Calgary from St. Louis, with most prices found around $361. If you aren’t able to travel during the month of January, then book flights to Calgary from St. Louis during April instead. Flights to Calgary in April, while not as cheap as those in January, still average around $443.

What is the cheapest day to depart on your flight to Calgary?

The cheapest day to depart on your flight to Calgary is on a Tuesday when prices can be found for as low as $456. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Calgary on a Sunday will generally be more expensive and average around $617. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Calgary?

The cheapest time of day to fly to Calgary is at noon when flights can be purchased for as low as $499. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $628 on average. Flights to Calgary from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $558 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 $395 on momondo.

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

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

Direct flights

None
There are no direct flights from St. Louis to Calgary. There are no popular flight routes from St. Louis to Calgary.
Search flight deals

  • 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 40m, 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 $158Free CancellationRating
7.1
10,403 reviews
Search Air Canada flights
DeltaPriceFrom $190Free CancellationRating
7.9
8,003 reviews
Search Delta flights
United AirlinesPriceFrom $331Free CancellationRating
7.4
9,002 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,153 reviews
Search WestJet flights

Traveling to a place near Calgary?

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