Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Calgary from $112

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 10/10. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from St. Louis to Calgary

Cheap round-trip flights

American Airlines Logo
4:34 pm - 12:34 pmSTL-YYC
21h 00m1 stop
American Airlines Logo
6:45 am - 10:08 pmYYC-STL
14h 23m2 stops
$285American Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
American Airlines Logo
8:00 pm - 12:34 pmSTL-YYC
17h 34m1 stop
American Airlines Logo
1:29 pm - 11:54 pmYYC-STL
9h 25m1 stop
$291American Airlines
Find Deal
Sat, Oct 11 - Tue, Oct 14
American Airlines Logo
4:34 pm - 12:34 pmSTL-YYC
21h 00m1 stop
American Airlines Logo
1:29 pm - 2:40 pmYYC-STL
24h 11m1 stop
$292American Airlines
Find Deal
Sat, Oct 25 - Sat, Nov 1
Logo
4:51 pm - 11:05 pmSTL-YYC
31h 14m1 stop
Logo
1:00 am - 6:10 pmYYC-STL
16h 10m2 stops
$342
Find Deal
Sat, Oct 25 - Fri, Oct 31
Logo
5:15 pm - 5:15 pmSTL-YYC
25h 00m2 stops
Logo
7:35 pm - 11:24 amYYC-STL
14h 49m1 stop
$348
Find Deal
Sun, Oct 26 - Sun, Nov 2
United Airlines Logo
12:25 pm - 11:38 amSTL-YYC
24h 13m1 stop
United Airlines Logo
12:37 pm - 2:25 pmYYC-STL
24h 48m1 stop
$437United Airlines
Find Deal
Thu, Oct 23 - Fri, Oct 31
Air Canada Logo
4:05 pm - 11:22 pmSTL-YYC
8h 17m1 stop
Air Canada Logo
7:00 am - 3:18 pmYYC-STL
7h 18m1 stop
$441Air Canada
Find Deal
Mon, Oct 20 - Thu, Oct 23
Delta Logo
2:21 pm - 11:10 pmSTL-YYC
9h 49m1 stop
Delta Logo
6:20 am - 5:09 pmYYC-STL
9h 49m2 stops
$452Delta
Find Deal
Thu, Nov 20 - Sun, Nov 23
Air Canada Logo
9:15 am - 5:02 pmSTL-YYC
8h 47m1 stop
Air Canada Logo
1:10 am - 3:18 pmYYC-STL
13h 08m1 stop
$465Air Canada
Find Deal
Mon, Oct 20 - Wed, Oct 22
Delta Logo
6:50 am - 5:50 pmSTL-YYC
12h 00m2 stops
Delta Logo
1:25 pm - 12:46 amYYC-STL
10h 21m2 stops
$481Delta
Find Deal
Thu, Nov 20 - Sun, Nov 23

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Oct 25
STL4:34 pmLambert-St Louis
21h 00m
1 stop
YYC12:34 pmCalgary
Nov 1
YYC6:45 amCalgary
14h 23m
2 stops
STL10:08 pmLambert-St Louis
$285
Find similar
American Airlines
Oct 11
STL8:00 pmLambert-St Louis
17h 34m
1 stop
YYC12:34 pmCalgary
Oct 14
YYC1:29 pmCalgary
9h 25m
1 stop
STL11:54 pmLambert-St Louis
$291
Find similar
American Airlines
Oct 25
STL4:34 pmLambert-St Louis
21h 00m
1 stop
YYC12:34 pmCalgary
Nov 1
YYC1:29 pmCalgary
24h 11m
1 stop
STL2:40 pmLambert-St Louis
$292
Find similar

Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
Oct 20
STL4:05 pmLambert-St Louis
8h 17m
1 stop
YYC11:22 pmCalgary
Oct 23
YYC7:00 amCalgary
7h 18m
1 stop
STL3:18 pmLambert-St Louis
$441
Find similar
Air Canada
Oct 20
STL9:15 amLambert-St Louis
8h 47m
1 stop
YYC5:02 pmCalgary
Oct 22
YYC1:10 amCalgary
13h 08m
1 stop
STL3:18 pmLambert-St Louis
$465
Find similar
Air Canada
Oct 20
STL4:05 pmLambert-St Louis
20h 40m
2 stops
YYC11:45 amCalgary
Oct 23
YYC7:00 amCalgary
7h 18m
1 stop
STL3:18 pmLambert-St Louis
$476
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 September 11, 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

Sat 10/25

4:34 pm-12:34 pm

1 stop21h 00m

Calgary

Sat 11/1

6:45 am-10:08 pm

2 stops14h 23m

$285

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 10/11

8:00 pm-12:34 pm

1 stop17h 34m

Calgary

Tue 10/14

1:29 pm-11:54 pm

1 stop9h 25m

$291

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 10/25

4:34 pm-12:34 pm

1 stop21h 00m

Calgary

Sat 11/1

1:29 pm-2:40 pm

1 stop24h 11m

$292

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 10/25

4:51 pm-11:05 pm

1 stop31h 14m

Calgary

Fri 10/31

1:00 am-6:10 pm

2 stops16h 10m

$342

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 10/26

5:15 pm-5:15 pm

2 stops25h 00m

Calgary

Sun 11/2

7:35 pm-11:24 am

1 stop14h 49m

$348

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 10/23

12:25 pm-11:38 am

1 stop24h 13m

Calgary

Fri 10/31

12:37 pm-2:25 pm

1 stop24h 48m

$437

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 10/20

4:05 pm-11:22 pm

1 stop8h 17m

Calgary

Thu 10/23

7:00 am-3:18 pm

1 stop7h 18m

$441

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 11/20

2:21 pm-11:10 pm

1 stop9h 49m

Calgary

Sun 11/23

6:20 am-5:09 pm

2 stops9h 49m

$452

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 10/20

9:15 am-5:02 pm

1 stop8h 47m

Calgary

Wed 10/22

1:10 am-3:18 pm

1 stop13h 08m

$465

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 11/20

6:50 am-5:50 pm

2 stops12h 00m

Calgary

Sun 11/23

1:25 pm-12:46 am

2 stops10h 21m

$481

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $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 $488.

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 $560 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 6h 08m, 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 $168Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
DeltaPriceFrom $168Free CancellationRating
7.9
7,960 reviews
Search Delta flights
United AirlinesPriceFrom $343Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
WestJetPriceFrom $460Free CancellationRating
7.2
3,091 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
Radium Hot Springs
Drumheller
Airdrie
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.

An easier way to manage your Calgary trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 10/11
Sat 10/18
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Canada