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Cheap flights from St. Louis to Calgary from $101

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 2/26. 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
8:12 pm - 12:14 pm
STL
-
YYC
17h 02m
2 stops
Multiple Airlines Logo
4:15 pm - 12:15 pm
YYC
-
STL
19h 00m
1 stop
$480Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
Multiple Airlines Logo
12:14 pm - 11:00 pm
STL
-
YYC
11h 46m
1 stop
Multiple Airlines Logo
4:15 pm - 12:15 pm
YYC
-
STL
19h 00m
1 stop
$487Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
United Airlines Logo
4:30 pm - 9:53 pm
STL
-
YYC
6h 23m
1 stop
United Airlines Logo
12:33 pm - 9:05 pm
YYC
-
STL
7h 32m
1 stop
$520United Airlines
Mon, Mar 2 - Wed, Mar 4
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
WestJet Logo
6:30 am - 5:00 pm
STL
-
YYC
11h 30m
1 stop
WestJet Logo
10:15 am - 11:01 pm
YYC
-
STL
11h 46m
1 stop
$526WestJet
Sat, May 30 - Mon, Jun 1
WestJet Logo
6:45 am - 8:05 pm
STL
-
YYC
14h 20m
1 stop
WestJet Logo
10:15 am - 11:01 pm
YYC
-
STL
11h 46m
1 stop
$527WestJet
Mon, Jun 15 - Sat, Jun 27
WestJet Logo
6:30 am - 4:53 pm
STL
-
YYC
11h 23m
1 stop
WestJet Logo
10:15 am - 11:01 pm
YYC
-
STL
11h 46m
1 stop
$528WestJet
Wed, Jul 1 - Sat, Jul 11
WestJet Logo
6:30 am - 6:40 pm
STL
-
YYC
13h 10m
2 stops
WestJet Logo
10:00 am - 12:53 pm
YYC
-
STL
25h 53m
1 stop
$529WestJet
Fri, Jul 24 - Sun, Aug 2
Delta Logo
10:12 am - 11:02 pm
STL
-
YYC
13h 50m
2 stops
Delta Logo
12:30 pm - 12:21 am
YYC
-
STL
10h 51m
1 stop
$530Delta
Tue, Apr 7 - Sun, Apr 12
WestJet Logo
3:42 pm - 11:15 am
STL
-
YYC
20h 33m
1 stop
WestJet Logo
9:15 am - 4:49 pm
YYC
-
STL
6h 34m
1 stop
$532WestJet
Wed, Jul 15 - Sat, Jul 18

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
May 30
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
Jun 15
STL6:45 amLambert-St Louis
14h 20m
1 stop
YYC8:05 pmCalgary
Jun 27
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$527
WestJet
Jul 1
STL6:30 amLambert-St Louis
11h 23m
1 stop
YYC4:53 pmCalgary
Jul 11
YYC10:15 amCalgary
11h 46m
1 stop
STL11:01 pmLambert-St Louis
$528

Alaska Airlines flights from St. Louis to Calgary

Our best Alaska Airlines deals on St. Louis to Calgary flight tickets
Alaska Airlines
May 30
STL6:20 pmLambert-St Louis
17h 21m
2 stops
YYC10:41 amCalgary
Jun 1
YYC11:31 amCalgary
27h 19m
1 stop
STL3:50 pmLambert-St Louis
$542
Alaska Airlines
May 30
STL6:20 pmLambert-St Louis
17h 21m
2 stops
YYC10:41 amCalgary
Jun 1
YYC11:31 amCalgary
28h 35m
2 stops
STL5:06 pmLambert-St Louis
$547
Alaska Airlines
Jun 4
STL7:56 pmLambert-St Louis
15h 45m
1 stop
YYC10:41 amCalgary
Jun 7
YYC7:00 pmCalgary
27h 57m
1 stop
STL11:57 pmLambert-St Louis
$581

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 27, 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 3/11

8:12 pm-12:14 pm

2 stops17h 02m

Calgary

Wed 3/18

4:15 pm-12:15 pm

1 stop19h 00m

$480

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 3/11

12:14 pm-11:00 pm

1 stop11h 46m

Calgary

Wed 3/18

4:15 pm-12:15 pm

1 stop19h 00m

$487

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 3/2

4:30 pm-9:53 pm

1 stop6h 23m

Calgary

Wed 3/4

12:33 pm-9:05 pm

1 stop7h 32m

$520

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

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 5/30

6:30 am-5:00 pm

1 stop11h 30m

Calgary

Mon 6/1

10:15 am-11:01 pm

1 stop11h 46m

$526

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 6/15

6:45 am-8:05 pm

1 stop14h 20m

Calgary

Sat 6/27

10:15 am-11:01 pm

1 stop11h 46m

$527

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 7/1

6:30 am-4:53 pm

1 stop11h 23m

Calgary

Sat 7/11

10:15 am-11:01 pm

1 stop11h 46m

$528

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 7/24

6:30 am-6:40 pm

2 stops13h 10m

Calgary

Sun 8/2

10:00 am-12:53 pm

1 stop25h 53m

$529

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 4/7

10:12 am-11:02 pm

2 stops13h 50m

Calgary

Sun 4/12

12:30 pm-12:21 am

1 stop10h 51m

$530

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 7/15

3:42 pm-11:15 am

1 stop20h 33m

Calgary

Sat 7/18

9:15 am-4:49 pm

1 stop6h 34m

$532

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

9h 17m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 9h 17m
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 17m, 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
10,660 reviews
Search Air Canada flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,119 reviews
Search Delta flights
United AirlinesPriceFrom $291Free CancellationRating
7.4
9,206 reviews
Search United Airlines flights
American AirlinesPriceFrom $398Free CancellationRating
7.2
11,198 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,251 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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