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Cheap flights from St. Louis to Calgary from $131

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 12/10. 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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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
3:53 pm - 10:52 pmSTL-YYC
7h 59m1 stop
Multiple Airlines Logo
7:35 pm - 3:08 pmYYC-STL
18h 33m1 stop
$300Multiple Airlines
Find Deal
Fri, Nov 28 - Sun, Nov 30
American Airlines Logo
3:20 pm - 12:48 pmSTL-YYC
22h 28m1 stop
American Airlines Logo
1:40 pm - 2:50 pmYYC-STL
24h 10m1 stop
$324American Airlines
Find Deal
Wed, Jan 21 - Mon, Jan 26
American Airlines Logo
6:00 am - 9:58 pmSTL-YYC
16h 58m2 stops
American Airlines Logo
1:40 pm - 2:50 pmYYC-STL
24h 10m1 stop
$333American Airlines
Find Deal
Wed, Jan 21 - Mon, Jan 26
Multiple Airlines Logo
3:30 pm - 11:44 amSTL-YYC
21h 14m2 stops
Multiple Airlines Logo
9:30 am - 10:33 pmYYC-STL
12h 03m1 stop
$334Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Multiple Airlines Logo
5:44 pm - 11:57 amSTL-YYC
19h 13m1 stop
Multiple Airlines Logo
9:00 am - 11:33 pmYYC-STL
13h 33m2 stops
$340Multiple Airlines
Find Deal
Mon, Feb 2 - Thu, Feb 5
Multiple Airlines Logo
3:53 pm - 10:52 pmSTL-YYC
7h 59m1 stop
Multiple Airlines Logo
7:35 pm - 9:09 pmYYC-STL
24h 34m2 stops
$367Multiple Airlines
Find Deal
Fri, Nov 28 - Sun, Nov 30
Multiple Airlines Logo
7:00 am - 5:50 pmSTL-YYC
11h 50m1 stop
Multiple Airlines Logo
9:30 am - 10:33 pmYYC-STL
12h 03m1 stop
$402Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Multiple Airlines Logo
5:44 pm - 11:57 amSTL-YYC
19h 13m1 stop
Multiple Airlines Logo
7:35 pm - 12:08 pmYYC-STL
15h 33m1 stop
$418Multiple Airlines
Find Deal
Mon, Feb 2 - Thu, Feb 5
American Airlines Logo
6:00 am - 9:58 pmSTL-YYC
16h 58m2 stops
American Airlines Logo
1:40 pm - 6:14 pmYYC-STL
27h 34m1 stop
$433American Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 24
American Airlines Logo
6:00 am - 9:58 pmSTL-YYC
16h 58m2 stops
American Airlines Logo
1:40 pm - 6:14 pmYYC-STL
27h 34m1 stop
$434American Airlines
Find Deal
Wed, Jan 14 - Sat, Jan 24

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Jan 21
STL3:20 pmLambert-St Louis
22h 28m
1 stop
YYC12:48 pmCalgary
Jan 26
YYC1:40 pmCalgary
24h 10m
1 stop
STL2:50 pmLambert-St Louis
$324
Find similar
American Airlines
Jan 21
STL6:00 amLambert-St Louis
16h 58m
2 stops
YYC9:58 pmCalgary
Jan 26
YYC1:40 pmCalgary
24h 10m
1 stop
STL2:50 pmLambert-St Louis
$333
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
$433
Find similar

Alaska Airlines flights from St. Louis to Calgary

Our best Alaska Airlines deals on St. Louis to Calgary flight tickets
Alaska Airlines
Mar 3
STL7:00 amLambert-St Louis
12h 10m
1 stop
YYC6:10 pmCalgary
Mar 4
YYC7:00 pmCalgary
27h 59m
1 stop
STL11:59 pmLambert-St Louis
$515
Find similar
Alaska Airlines
Mar 3
STL7:00 amLambert-St Louis
12h 10m
1 stop
YYC6:10 pmCalgary
Mar 4
YYC7:00 pmCalgary
17h 51m
1 stop
STL1:51 pmLambert-St Louis
$516
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 12, 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

Fri 11/28

3:53 pm-10:52 pm

1 stop7h 59m

Calgary

Sun 11/30

7:35 pm-3:08 pm

1 stop18h 33m

$300

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/21

3:20 pm-12:48 pm

1 stop22h 28m

Calgary

Mon 1/26

1:40 pm-2:50 pm

1 stop24h 10m

$324

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/21

6:00 am-9:58 pm

2 stops16h 58m

Calgary

Mon 1/26

1:40 pm-2:50 pm

1 stop24h 10m

$333

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 12/9

3:30 pm-11:44 am

2 stops21h 14m

Calgary

Tue 12/16

9:30 am-10:33 pm

1 stop12h 03m

$334

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/2

5:44 pm-11:57 am

1 stop19h 13m

Calgary

Thu 2/5

9:00 am-11:33 pm

2 stops13h 33m

$340

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 11/28

3:53 pm-10:52 pm

1 stop7h 59m

Calgary

Sun 11/30

7:35 pm-9:09 pm

2 stops24h 34m

$367

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 12/9

7:00 am-5:50 pm

1 stop11h 50m

Calgary

Tue 12/16

9:30 am-10:33 pm

1 stop12h 03m

$402

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/2

5:44 pm-11:57 am

1 stop19h 13m

Calgary

Thu 2/5

7:35 pm-12:08 pm

1 stop15h 33m

$418

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/14

6:00 am-9:58 pm

2 stops16h 58m

Calgary

Sat 1/24

1:40 pm-6:14 pm

1 stop27h 34m

$433

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/14

6:00 am-9:58 pm

2 stops16h 58m

Calgary

Sat 1/24

1:40 pm-6:14 pm

1 stop27h 34m

$434

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 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 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 $351. 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 $568 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 7h 48m, 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
10,443 reviews
Search Air Canada flights
DeltaPriceFrom $190Free CancellationRating
7.9
8,008 reviews
Search Delta flights
United AirlinesPriceFrom $331Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,159 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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