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Cheap flights from St. Louis to Calgary from $127

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 3/3. 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
3:49 pm - 9:02 am
STL
-
YYC
18h 13m
2 stops
Multiple Airlines Logo
7:35 pm - 5:46 pm
YYC
-
STL
21h 11m
1 stop
$390Multiple Airlines
Tue, Feb 24 - Fri, Feb 27
Multiple Airlines Logo
10:11 pm - 11:57 am
STL
-
YYC
14h 46m
1 stop
Multiple Airlines Logo
1:25 pm - 9:49 am
YYC
-
STL
43h 24m
2 stops
$391Multiple Airlines
Thu, Feb 26 - Thu, Mar 5
Multiple Airlines Logo
10:11 pm - 11:57 am
STL
-
YYC
14h 46m
1 stop
Multiple Airlines Logo
7:20 pm - 10:27 pm
YYC
-
STL
26h 07m
2 stops
$435Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Multiple Airlines Logo
7:00 am - 5:50 pm
STL
-
YYC
11h 50m
1 stop
Multiple Airlines Logo
1:25 pm - 11:59 pm
YYC
-
STL
9h 34m
1 stop
$445Multiple Airlines
Thu, Feb 26 - Thu, Mar 5
American Airlines Logo
9:35 am - 9:56 pm
STL
-
YYC
13h 21m
1 stop
American Airlines Logo
1:40 pm - 11:48 pm
YYC
-
STL
9h 08m
1 stop
$446American Airlines
Sun, Mar 1 - Thu, Mar 5
Alaska Airlines Logo
7:56 pm - 10:41 am
STL
-
YYC
15h 45m
1 stop
Alaska Airlines Logo
11:31 am - 11:57 pm
YYC
-
STL
11h 26m
1 stop
$507Alaska Airlines
Sat, May 30 - Mon, Jun 1
Multiple Airlines Logo
7:00 am - 5:50 pm
STL
-
YYC
11h 50m
1 stop
Multiple Airlines Logo
7:35 pm - 5:46 pm
YYC
-
STL
21h 11m
1 stop
$510Multiple Airlines
Tue, Feb 24 - Fri, Feb 27
United Airlines Logo
6:55 pm - 11:31 am
STL
-
YYC
17h 36m
1 stop
United Airlines Logo
12:33 pm - 9:40 pm
YYC
-
STL
8h 07m
1 stop
$516United Airlines
Mon, Mar 2 - Wed, Mar 4
Multiple Airlines Logo
7:56 pm - 10:41 am
STL
-
YYC
15h 45m
1 stop
Multiple Airlines Logo
10:15 am - 4:45 pm
YYC
-
STL
5h 30m
1 stop
$519Multiple Airlines
Mon, Jun 1 - Sat, Jun 6
United Airlines Logo
6:55 pm - 11:31 am
STL
-
YYC
17h 36m
1 stop
United Airlines Logo
12:33 pm - 9:05 pm
YYC
-
STL
7h 32m
1 stop
$521United Airlines
Mon, Mar 2 - Wed, Mar 4

United Airlines flights from St. Louis to Calgary

Our best United Airlines deals on St. Louis to Calgary flight tickets
United Airlines
Mar 2
STL6:55 pmLambert-St Louis
17h 36m
1 stop
YYC11:31 amCalgary
Mar 4
YYC12:33 pmCalgary
8h 07m
1 stop
STL9:40 pmLambert-St Louis
$516
United Airlines
Mar 2
STL6:55 pmLambert-St Louis
17h 36m
1 stop
YYC11:31 amCalgary
Mar 4
YYC12:33 pmCalgary
7h 32m
1 stop
STL9:05 pmLambert-St Louis
$521
United Airlines
Mar 2
STL6:55 pmLambert-St Louis
17h 36m
1 stop
YYC11:31 amCalgary
Mar 4
YYC6:15 amCalgary
13h 11m
1 stop
STL8:26 pmLambert-St Louis
$522

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
May 29
STL6:30 amLambert-St Louis
11h 30m
1 stop
YYC5:00 pmCalgary
Jun 1
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$526
WestJet
Jul 25
STL6:30 amLambert-St Louis
11h 23m
1 stop
YYC4:53 pmCalgary
Aug 1
YYC9:15 amCalgary
6h 34m
1 stop
STL4:49 pmLambert-St Louis
$527
WestJet
Jul 24
STL6:30 amLambert-St Louis
13h 10m
2 stops
YYC6:40 pmCalgary
Aug 2
YYC10:00 amCalgary
25h 53m
1 stop
STL12:53 pmLambert-St Louis
$528

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 29, 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

Tue 2/24

3:49 pm-9:02 am

2 stops18h 13m

Calgary

Fri 2/27

7:35 pm-5:46 pm

1 stop21h 11m

$390

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 2/26

10:11 pm-11:57 am

1 stop14h 46m

Calgary

Thu 3/5

1:25 pm-9:49 am

2 stops43h 24m

$391

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 2/26

10:11 pm-11:57 am

1 stop14h 46m

Calgary

Mon 3/2

7:20 pm-10:27 pm

2 stops26h 07m

$435

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 2/26

7:00 am-5:50 pm

1 stop11h 50m

Calgary

Thu 3/5

1:25 pm-11:59 pm

1 stop9h 34m

$445

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 3/1

9:35 am-9:56 pm

1 stop13h 21m

Calgary

Thu 3/5

1:40 pm-11:48 pm

1 stop9h 08m

$446

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 5/30

7:56 pm-10:41 am

1 stop15h 45m

Calgary

Mon 6/1

11:31 am-11:57 pm

1 stop11h 26m

$507

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 2/24

7:00 am-5:50 pm

1 stop11h 50m

Calgary

Fri 2/27

7:35 pm-5:46 pm

1 stop21h 11m

$510

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/2

6:55 pm-11:31 am

1 stop17h 36m

Calgary

Wed 3/4

12:33 pm-9:40 pm

1 stop8h 07m

$516

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 6/1

7:56 pm-10:41 am

1 stop15h 45m

Calgary

Sat 6/6

10:15 am-4:45 pm

1 stop5h 30m

$519

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/2

6:55 pm-11:31 am

1 stop17h 36m

Calgary

Wed 3/4

12:33 pm-9:05 pm

1 stop7h 32m

$521

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 March instead. Flights to Calgary in March, while not as cheap as those in November, still average around $397.

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 $537 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 $470 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

6h 14m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 6h 14m
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 14m, 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 $178Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,127 reviews
Search Delta flights
United AirlinesPriceFrom $291Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
American AirlinesPriceFrom $398Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,253 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
Airdrie
Drumheller
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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