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Cheap flights from St. Louis to Calgary from $146

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 2/17. 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
8:22 pm - 11:44 am
STL
-
YYC
16h 22m1 stop
Multiple Airlines Logo
12:30 am - 6:51 am
YYC
-
STL
29h 21m1 stop
$259Multiple Airlines
Mon, Jan 26 - Sat, Jan 31
Multiple Airlines Logo
8:22 pm - 11:43 am
STL
-
YYC
16h 21m1 stop
Multiple Airlines Logo
12:30 pm - 7:52 pm
YYC
-
STL
30h 22m2 stops
$272Multiple Airlines
Mon, Feb 23 - Sun, Mar 1
Multiple Airlines Logo
8:22 pm - 11:43 am
STL
-
YYC
16h 21m1 stop
Multiple Airlines Logo
7:35 pm - 7:52 pm
YYC
-
STL
23h 17m1 stop
$276Multiple Airlines
Mon, Feb 23 - Sun, Mar 1
Multiple Airlines Logo
3:49 pm - 11:43 am
STL
-
YYC
20h 54m2 stops
Multiple Airlines Logo
12:30 am - 10:37 am
YYC
-
STL
9h 07m1 stop
$278Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
Multiple Airlines Logo
8:22 pm - 11:43 am
STL
-
YYC
16h 21m1 stop
Multiple Airlines Logo
12:30 am - 10:37 am
YYC
-
STL
9h 07m1 stop
$282Multiple Airlines
Mon, Mar 2 - Tue, Mar 10
Multiple Airlines Logo
5:18 pm - 12:14 pm
STL
-
YYC
19h 56m2 stops
Multiple Airlines Logo
12:30 am - 10:37 am
YYC
-
STL
9h 07m1 stop
$290Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
8:22 pm - 7:09 pm
STL
-
YYC
23h 47m1 stop
Multiple Airlines Logo
8:25 am - 9:26 pm
YYC
-
STL
12h 01m1 stop
$292Multiple Airlines
Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
2:51 pm - 11:10 am
STL
-
YYC
21h 19m2 stops
Multiple Airlines Logo
12:30 am - 10:37 am
YYC
-
STL
9h 07m1 stop
$293Multiple Airlines
Sat, Feb 28 - Tue, Mar 10
Multiple Airlines Logo
8:22 pm - 11:44 am
STL
-
YYC
16h 22m1 stop
Multiple Airlines Logo
9:00 am - 2:46 pm
YYC
-
STL
28h 46m2 stops
$295Multiple Airlines
Mon, Jan 26 - Tue, Feb 3
Multiple Airlines Logo
5:42 pm - 7:09 pm
STL
-
YYC
26h 27m2 stops
Multiple Airlines Logo
7:35 pm - 8:50 pm
YYC
-
STL
24h 15m1 stop
$296Multiple Airlines
Tue, Jan 27 - Sun, Feb 1

United Airlines flights from St. Louis to Calgary

Our best United Airlines deals on St. Louis to Calgary flight tickets
United Airlines
Jan 19
STL2:45 pmLambert-St Louis
8h 08m
1 stop
YYC9:53 pmCalgary
Jan 22
YYC12:37 pmCalgary
5h 50m
1 stop
STL7:27 pmLambert-St Louis
$499
Find similar
United Airlines
Jan 19
STL2:45 pmLambert-St Louis
8h 08m
1 stop
YYC9:53 pmCalgary
Jan 22
YYC6:15 amCalgary
9h 40m
1 stop
STL4:55 pmLambert-St Louis
$543
Find similar
United Airlines
Jan 19
STL6:40 pmLambert-St Louis
19h 28m
2 stops
YYC1:08 pmCalgary
Jan 22
YYC6:15 amCalgary
13h 43m
1 stop
STL8:58 pmLambert-St Louis
$561
Find similar

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Jan 14
STL9:59 amLambert-St Louis
14h 03m
2 stops
YYC11:02 pmCalgary
Jan 24
YYC6:30 amCalgary
8h 34m
1 stop
STL4:04 pmLambert-St Louis
$587
Find similar
Delta
Jan 14
STL9:59 amLambert-St Louis
14h 03m
2 stops
YYC11:02 pmCalgary
Jan 24
YYC6:30 amCalgary
13h 13m
2 stops
STL8:43 pmLambert-St Louis
$592
Find similar
Delta
Jan 14
STL9:59 amLambert-St Louis
14h 03m
2 stops
YYC11:02 pmCalgary
Jan 24
YYC6:30 amCalgary
8h 34m
1 stop
STL4:04 pmLambert-St Louis
$616
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 January 7, 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

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/26

8:22 pm-11:44 am

1 stop16h 22m

Calgary

Sat 1/31

12:30 am-6:51 am

1 stop29h 21m

$259

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/23

8:22 pm-11:43 am

1 stop16h 21m

Calgary

Sun 3/1

12:30 pm-7:52 pm

2 stops30h 22m

$272

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/23

8:22 pm-11:43 am

1 stop16h 21m

Calgary

Sun 3/1

7:35 pm-7:52 pm

1 stop23h 17m

$276

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 3/3

3:49 pm-11:43 am

2 stops20h 54m

Calgary

Tue 3/10

12:30 am-10:37 am

1 stop9h 07m

$278

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/2

8:22 pm-11:43 am

1 stop16h 21m

Calgary

Tue 3/10

12:30 am-10:37 am

1 stop9h 07m

$282

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 3/4

5:18 pm-12:14 pm

2 stops19h 56m

Calgary

Tue 3/10

12:30 am-10:37 am

1 stop9h 07m

$290

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/23

8:22 pm-7:09 pm

1 stop23h 47m

Calgary

Thu 2/26

8:25 am-9:26 pm

1 stop12h 01m

$292

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 2/28

2:51 pm-11:10 am

2 stops21h 19m

Calgary

Tue 3/10

12:30 am-10:37 am

1 stop9h 07m

$293

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 1/26

8:22 pm-11:44 am

1 stop16h 22m

Calgary

Tue 2/3

9:00 am-2:46 pm

2 stops28h 46m

$295

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 1/27

5:42 pm-7:09 pm

2 stops26h 27m

Calgary

Sun 2/1

7:35 pm-8:50 pm

1 stop24h 15m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 resultsSorted by cheapest first
1
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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 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 April instead. Flights to Calgary in April, while not as cheap as those in November, still average around $387.

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 $532 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

9h 22m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 9h 22m
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 9h 22m, 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 $179Free CancellationRating
7.1
10,600 reviews
Search Air Canada flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,021 reviews
Search Delta flights
United AirlinesPriceFrom $328Free CancellationRating
7.4
9,138 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,090 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,235 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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