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Cheap flights from St. Louis to Calgary from $139

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 3/4. 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
8:17 pm - 6:17 pm
STL
-
YYC
23h 00m
2 stops
Multiple Airlines Logo
12:30 am - 10:37 am
YYC
-
STL
9h 07m
1 stop
$315Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
2:09 pm - 11:43 am
STL
-
YYC
22h 34m
1 stop
Multiple Airlines Logo
12:30 am - 1:34 pm
YYC
-
STL
12h 04m
1 stop
$450Multiple Airlines
Mon, Mar 9 - Thu, Mar 12
Multiple Airlines Logo
3:49 pm - 9:39 pm
STL
-
YYC
30h 50m
2 stops
Multiple Airlines Logo
1:25 pm - 11:59 pm
YYC
-
STL
9h 34m
1 stop
$457Multiple Airlines
Tue, Feb 24 - Thu, Feb 26
Multiple Airlines Logo
2:09 pm - 11:43 am
STL
-
YYC
22h 34m
1 stop
Multiple Airlines Logo
9:35 pm - 11:25 pm
YYC
-
STL
24h 50m
2 stops
$461Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
3:50 pm - 5:50 pm
STL
-
YYC
27h 00m
1 stop
Multiple Airlines Logo
1:25 pm - 11:59 pm
YYC
-
STL
9h 34m
1 stop
$468Multiple Airlines
Tue, Apr 7 - Sun, Apr 12
Multiple Airlines Logo
4:46 pm - 3:30 pm
STL
-
YYC
23h 44m
2 stops
Multiple Airlines Logo
7:02 pm - 3:50 pm
YYC
-
STL
19h 48m
1 stop
$472Multiple Airlines
Wed, Apr 22 - Wed, Apr 29
American Airlines Logo
7:00 am - 9:56 pm
STL
-
YYC
15h 56m
1 stop
American Airlines Logo
1:30 pm - 11:48 pm
YYC
-
STL
9h 18m
1 stop
$473American Airlines
Wed, Mar 4 - Wed, Mar 11
Multiple Airlines Logo
8:12 pm - 10:10 am
STL
-
YYC
38h 58m
2 stops
Multiple Airlines Logo
12:30 am - 1:34 pm
YYC
-
STL
12h 04m
1 stop
$503Multiple Airlines
Fri, Mar 6 - Thu, Mar 12
Multiple Airlines Logo
8:47 pm - 12:14 pm
STL
-
YYC
16h 27m
1 stop
Multiple Airlines Logo
7:35 pm - 9:26 pm
YYC
-
STL
24h 51m
1 stop
$517Multiple Airlines
Mon, Feb 16 - Wed, Feb 18
United Airlines Logo
6:25 am - 11:31 am
STL
-
YYC
6h 06m
1 stop
United Airlines Logo
12:33 pm - 9:05 pm
YYC
-
STL
7h 32m
1 stop
$520United Airlines
Tue, Feb 24 - Thu, Feb 26

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
May 28
STL8:50 amLambert-St Louis
9h 10m
1 stop
YYC5:00 pmCalgary
Jun 8
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$523
WestJet
May 28
STL8:50 amLambert-St Louis
10h 50m
2 stops
YYC6:40 pmCalgary
Jun 8
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$525
WestJet
Jul 11
STL6:30 amLambert-St Louis
11h 23m
1 stop
YYC4:53 pmCalgary
Jul 20
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$536

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Feb 24
STL10:13 amLambert-St Louis
13h 52m
2 stops
YYC11:05 pmCalgary
Feb 26
YYC7:40 amCalgary
14h 56m
2 stops
STL11:36 pmLambert-St Louis
$535
Delta
May 29
STL2:15 pmLambert-St Louis
9h 51m
1 stop
YYC11:06 pmCalgary
Jun 6
YYC6:35 amCalgary
15h 26m
1 stop
STL11:01 pmLambert-St Louis
$558

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 20, 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

Wed 3/4

8:17 pm-6:17 pm

2 stops23h 00m

Calgary

Tue 3/10

12:30 am-10:37 am

1 stop9h 07m

$315

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/9

2:09 pm-11:43 am

1 stop22h 34m

Calgary

Thu 3/12

12:30 am-1:34 pm

1 stop12h 04m

$450

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 2/24

3:49 pm-9:39 pm

2 stops30h 50m

Calgary

Thu 2/26

1:25 pm-11:59 pm

1 stop9h 34m

$457

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/9

2:09 pm-11:43 am

1 stop22h 34m

Calgary

Fri 3/13

9:35 pm-11:25 pm

2 stops24h 50m

$461

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 4/7

3:50 pm-5:50 pm

1 stop27h 00m

Calgary

Sun 4/12

1:25 pm-11:59 pm

1 stop9h 34m

$468

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 4/22

4:46 pm-3:30 pm

2 stops23h 44m

Calgary

Wed 4/29

7:02 pm-3:50 pm

1 stop19h 48m

$472

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 3/4

7:00 am-9:56 pm

1 stop15h 56m

Calgary

Wed 3/11

1:30 pm-11:48 pm

1 stop9h 18m

$473

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 3/6

8:12 pm-10:10 am

2 stops38h 58m

Calgary

Thu 3/12

12:30 am-1:34 pm

1 stop12h 04m

$503

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/16

8:47 pm-12:14 pm

1 stop16h 27m

Calgary

Wed 2/18

7:35 pm-9:26 pm

1 stop24h 51m

$517

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 2/24

6:25 am-11:31 am

1 stop6h 06m

Calgary

Thu 2/26

12:33 pm-9:05 pm

1 stop7h 32m

$520

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 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 $536 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

5h 59m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 5h 59m
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 5h 59m, 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
10,637 reviews
Search Air Canada flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,080 reviews
Search Delta flights
United AirlinesPriceFrom $291Free CancellationRating
7.4
9,183 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,164 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,247 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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