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Cheap flights from St. Louis to Calgary from $188

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 6/2. 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.
Air Canada Logo
7:05 am - 6:31 pm
STL
-
YYC
12h 26m
2 stops
Air Canada Logo
6:05 pm - 12:06 pm
YYC
-
STL
17h 01m
1 stop
$423Air Canada
Fri, May 8 - Fri, May 15
Air Canada Logo
7:05 am - 10:58 pm
STL
-
YYC
16h 53m
1 stop
Air Canada Logo
12:55 am - 12:06 pm
YYC
-
STL
10h 11m
1 stop
$450Air Canada
Fri, May 8 - Thu, May 14
Air Canada Logo
1:05 pm - 9:32 pm
STL
-
YYC
9h 27m
1 stop
Air Canada Logo
10:30 am - 8:09 pm
YYC
-
STL
8h 39m
1 stop
$459Air Canada
Tue, May 5 - Sat, May 9
United Airlines Logo
5:32 pm - 10:36 pm
STL
-
YYC
6h 04m
1 stop
United Airlines Logo
9:30 am - 4:31 pm
YYC
-
STL
6h 01m
1 stop
$462United Airlines
Tue, Sep 15 - Wed, Sep 23
Air Canada Logo
1:05 pm - 9:32 pm
STL
-
YYC
9h 27m
1 stop
Air Canada Logo
9:20 am - 8:09 pm
YYC
-
STL
9h 49m
2 stops
$465Air Canada
Tue, May 5 - Sat, May 9
Delta Logo
12:10 pm - 11:06 pm
STL
-
YYC
11h 56m
2 stops
Delta Logo
2:00 pm - 12:36 am
YYC
-
STL
9h 36m
1 stop
$472Delta
Tue, Sep 15 - Wed, Sep 23
Delta Logo
12:10 pm - 11:06 pm
STL
-
YYC
11h 56m
2 stops
Delta Logo
7:15 am - 11:01 pm
YYC
-
STL
14h 46m
2 stops
$477Delta
Tue, Sep 15 - Wed, Sep 23
Air Canada Logo
7:05 am - 6:31 pm
STL
-
YYC
12h 26m
2 stops
Air Canada Logo
8:30 pm - 12:06 pm
YYC
-
STL
14h 36m
2 stops
$482Air Canada
Fri, May 8 - Fri, May 15
United Airlines Logo
8:15 pm - 11:32 am
STL
-
YYC
16h 17m
1 stop
United Airlines Logo
12:34 pm - 9:13 pm
YYC
-
STL
7h 39m
1 stop
$484United Airlines
Mon, Apr 20 - Fri, Apr 24
Air Canada Logo
1:05 pm - 9:32 pm
STL
-
YYC
9h 27m
1 stop
Air Canada Logo
9:20 am - 8:09 pm
YYC
-
STL
9h 49m
2 stops
$486Air Canada
Tue, May 5 - Sat, May 9

Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
May 8
STL7:05 amLambert-St Louis
12h 26m
2 stops
YYC6:31 pmCalgary
May 15
YYC6:05 pmCalgary
17h 01m
1 stop
STL12:06 pmLambert-St Louis
$423
Air Canada
May 8
STL7:05 amLambert-St Louis
16h 53m
1 stop
YYC10:58 pmCalgary
May 14
YYC12:55 amCalgary
10h 11m
1 stop
STL12:06 pmLambert-St Louis
$450
Air Canada
May 5
STL1:05 pmLambert-St Louis
9h 27m
1 stop
YYC9:32 pmCalgary
May 9
YYC10:30 amCalgary
8h 39m
1 stop
STL8:09 pmLambert-St Louis
$459

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Apr 5
STL6:00 amLambert-St Louis
7h 50m
1 stop
YYC12:50 pmCalgary
Apr 13
YYC12:45 pmCalgary
19h 09m
1 stop
STL8:54 amLambert-St Louis
$462
American Airlines
Apr 8
STL12:27 pmLambert-St Louis
10h 17m
1 stop
YYC9:44 pmCalgary
Apr 11
YYC6:45 amCalgary
9h 36m
1 stop
STL5:21 pmLambert-St Louis
$509
American Airlines
Jul 3
STL6:00 amLambert-St Louis
18h 40m
1 stop
YYC11:40 pmCalgary
Jul 7
YYC6:15 amCalgary
13h 14m
1 stop
STL8:29 pmLambert-St Louis
$527

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 March 26, 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

Cheapest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 5/8

7:05 am-6:31 pm

2 stops12h 26m

Calgary

Fri 5/15

6:05 pm-12:06 pm

1 stop17h 01m

$423

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 5/8

7:05 am-10:58 pm

1 stop16h 53m

Calgary

Thu 5/14

12:55 am-12:06 pm

1 stop10h 11m

$450

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 5/5

1:05 pm-9:32 pm

1 stop9h 27m

Calgary

Sat 5/9

10:30 am-8:09 pm

1 stop8h 39m

$459
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 9/15

5:32 pm-10:36 pm

1 stop6h 04m

Calgary

Wed 9/23

9:30 am-4:31 pm

1 stop6h 01m

$462

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 5/5

1:05 pm-9:32 pm

1 stop9h 27m

Calgary

Sat 5/9

9:20 am-8:09 pm

2 stops9h 49m

$465

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 9/15

12:10 pm-11:06 pm

2 stops11h 56m

Calgary

Wed 9/23

2:00 pm-12:36 am

1 stop9h 36m

$472

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 9/15

12:10 pm-11:06 pm

2 stops11h 56m

Calgary

Wed 9/23

7:15 am-11:01 pm

2 stops14h 46m

$477

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 5/8

7:05 am-6:31 pm

2 stops12h 26m

Calgary

Fri 5/15

8:30 pm-12:06 pm

2 stops14h 36m

$482

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 4/20

8:15 pm-11:32 am

1 stop16h 17m

Calgary

Fri 4/24

12:34 pm-9:13 pm

1 stop7h 39m

$484

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 5/5

1:05 pm-9:32 pm

1 stop9h 27m

Calgary

Sat 5/9

9:20 am-8:09 pm

2 stops9h 49m

$486

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 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 $504.

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 $580 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 $484 on momondo.

How have St. Louis to Calgary flight prices changed over time?

As of March 2026, prices for St. Louis to Calgary flights are approximately 46% more expensive when compared to flights at the same time last year.

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 07m

Direct flights

Sat

Airports in Calgary

1 airport
The fastest flight from St. Louis to Calgary takes 6h 07m
Direct flights go from St. Louis to Calgary on Saturday. There are no airlines offering direct flights.
There is 1 airport in Calgary. From St. Louis there are direct flights to Calgary (YYC).
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 07m, 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
10,842 reviews
Search Air Canada flights
United AirlinesPriceFrom $213Free CancellationRating
7.4
9,484 reviews
Search United Airlines flights
DeltaPriceFrom $291Free CancellationRating
7.9
8,331 reviews
Search Delta flights
American AirlinesPriceFrom $398Free CancellationRating
7.1
11,496 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,303 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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