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Cheap flights from St. Louis to Calgary from $134

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 1/24. 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
8:32 pm - 3:12 pm
STL
-
YYC
19h 40m2 stops
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$243Multiple Airlines
Sat, Jan 17 - Thu, Jan 22
Multiple Airlines Logo
8:32 pm - 3:12 pm
STL
-
YYC
19h 40m2 stops
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$246Multiple Airlines
Sat, Jan 17 - Sat, Jan 24
Multiple Airlines Logo
8:32 pm - 11:44 am
STL
-
YYC
16h 12m1 stop
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$257Multiple Airlines
Mon, Jan 19 - Thu, Jan 22
Multiple Airlines Logo
8:32 pm - 7:09 pm
STL
-
YYC
23h 37m1 stop
Multiple Airlines Logo
8:55 am - 6:51 am
YYC
-
STL
20h 56m1 stop
$261Multiple Airlines
Mon, Jan 19 - Thu, Jan 22
Multiple Airlines Logo
8:32 pm - 3:12 pm
STL
-
YYC
19h 40m2 stops
Multiple Airlines Logo
8:55 am - 6:51 am
YYC
-
STL
20h 56m1 stop
$263Multiple Airlines
Sat, Jan 17 - Thu, Jan 22
Multiple Airlines Logo
8:32 pm - 7:09 pm
STL
-
YYC
23h 37m1 stop
Multiple Airlines Logo
8:15 am - 11:33 pm
YYC
-
STL
14h 18m2 stops
$272Multiple Airlines
Mon, Jan 19 - Fri, Jan 23
Multiple Airlines Logo
10:09 pm - 12:01 pm
STL
-
YYC
14h 52m1 stop
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$284Multiple Airlines
Sun, Jan 18 - Thu, Jan 22
Multiple Airlines Logo
10:09 pm - 12:01 pm
STL
-
YYC
14h 52m1 stop
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$286Multiple Airlines
Sun, Jan 18 - Sat, Jan 24
Multiple Airlines Logo
8:22 pm - 7:09 pm
STL
-
YYC
23h 47m1 stop
Multiple Airlines Logo
3:35 pm - 12:50 pm
YYC
-
STL
20h 15m2 stops
$289Multiple Airlines
Wed, Jan 21 - Sun, Jan 25
Multiple Airlines Logo
8:32 pm - 7:09 pm
STL
-
YYC
23h 37m1 stop
Multiple Airlines Logo
3:35 pm - 12:50 pm
YYC
-
STL
20h 15m2 stops
$290Multiple Airlines
Mon, Jan 19 - Sun, Jan 25

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Jan 12
STL6:44 pmLambert-St Louis
19h 04m
1 stop
YYC12:48 pmCalgary
Jan 16
YYC1:40 pmCalgary
22h 29m
1 stop
STL1:09 pmLambert-St Louis
$347
Find similar
American Airlines
Jan 14
STL6:00 amLambert-St Louis
16h 58m
2 stops
YYC9:58 pmCalgary
Jan 24
YYC1:40 pmCalgary
19h 40m
1 stop
STL10:20 amLambert-St Louis
$572
Find similar
American Airlines
Jan 14
STL11:55 amLambert-St Louis
11h 03m
1 stop
YYC9:58 pmCalgary
Jan 24
YYC1:40 pmCalgary
19h 40m
1 stop
STL10:20 amLambert-St Louis
$588
Find similar

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Jan 12
STL6:35 amLambert-St Louis
12h 15m
2 stops
YYC5:50 pmCalgary
Jan 16
YYC8:15 pmCalgary
11h 38m
2 stops
STL8:53 amLambert-St Louis
$579
Find similar
Delta
Jan 14
STL7:10 amLambert-St Louis
11h 20m
2 stops
YYC5:30 pmCalgary
Jan 24
YYC1:30 pmCalgary
8h 55m
2 stops
STL11:25 pmLambert-St Louis
$584
Find similar
Delta
Jan 25
STL6:40 amLambert-St Louis
12h 10m
2 stops
YYC5:50 pmCalgary
Feb 1
YYC1:25 pmCalgary
9h 00m
2 stops
STL11:25 pmLambert-St Louis
$589
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 December 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 1/17

8:32 pm-3:12 pm

2 stops19h 40m

Calgary

Thu 1/22

12:30 am-6:51 am

1 stop29h 21m

$243

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/17

8:32 pm-3:12 pm

2 stops19h 40m

Calgary

Sat 1/24

12:30 am-6:51 am

1 stop29h 21m

$246

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/19

8:32 pm-11:44 am

1 stop16h 12m

Calgary

Thu 1/22

12:30 am-6:51 am

1 stop29h 21m

$257

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/19

8:32 pm-7:09 pm

1 stop23h 37m

Calgary

Thu 1/22

8:55 am-6:51 am

1 stop20h 56m

$261

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/17

8:32 pm-3:12 pm

2 stops19h 40m

Calgary

Thu 1/22

8:55 am-6:51 am

1 stop20h 56m

$263

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/19

8:32 pm-7:09 pm

1 stop23h 37m

Calgary

Fri 1/23

8:15 am-11:33 pm

2 stops14h 18m

$272

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:09 pm-12:01 pm

1 stop14h 52m

Calgary

Thu 1/22

12:30 am-6:51 am

1 stop29h 21m

$284

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:09 pm-12:01 pm

1 stop14h 52m

Calgary

Sat 1/24

12:30 am-6:51 am

1 stop29h 21m

$286

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 1/21

8:22 pm-7:09 pm

1 stop23h 47m

Calgary

Sun 1/25

3:35 pm-12:50 pm

2 stops20h 15m

$289

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/19

8:32 pm-7:09 pm

1 stop23h 37m

Calgary

Sun 1/25

3:35 pm-12:50 pm

2 stops20h 15m

$290

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 cheapest month to fly to Calgary?

The month of November is, on average, the cheapest month to fly to Calgary from St. Louis, with most prices found around $331. If you aren’t able to travel during the month of November, then book flights to Calgary from St. Louis during January instead. Flights to Calgary in January, while not as cheap as those in November, still average around $361.

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 $538 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

Fastest flight time

8h 54m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 8h 54m
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 8h 54m, 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
10,516 reviews
Search Air Canada flights
DeltaPriceFrom $190Free CancellationRating
7.9
8,007 reviews
Search Delta flights
United AirlinesPriceFrom $331Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,195 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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