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Cheap flights from St. Louis to Calgary from $167

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 9/15. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
2:29 pm - 9:50 pmSTL  Lambert-St Louis-YYC Calgary
8h 21m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
12:20 am - 1:10 pmYYC  Calgary-STL Lambert-St Louis
11h 50m1 stop Atlanta Hartsfield-Jackson
$302Multiple Airlines
Fri, Sep 18 - Sun, Sep 20
Multiple Airlines Logo
6:17 pm - 11:00 amSTL  Lambert-St Louis-YYC Calgary
17h 43m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
12:20 am - 5:22 pmYYC  Calgary-STL Lambert-St Louis
16h 02m1 stop Atlanta Hartsfield-Jackson
$303Multiple Airlines
Fri, Sep 4 - Sat, Sep 5
WestJet Logo
1:55 pm - 8:15 pmSTL  Lambert-St Louis-YYC Calgary
7h 20m1 stop Detroit Metropolitan Wayne County
WestJet Logo
10:15 am - 11:16 pmYYC  Calgary-STL Lambert-St Louis
12h 01m1 stop Minneapolis St Paul
$401WestJet
Tue, Sep 15 - Wed, Sep 23
WestJet Logo
1:55 pm - 8:15 pmSTL  Lambert-St Louis-YYC Calgary
7h 20m1 stop Detroit Metropolitan Wayne County
WestJet Logo
10:15 am - 11:16 pmYYC  Calgary-STL Lambert-St Louis
12h 01m1 stop Minneapolis St Paul
$401WestJet
Tue, Sep 15 - Wed, Sep 23
United Airlines Logo
9:00 am - 1:53 pmSTL  Lambert-St Louis-YYC Calgary
5h 53m1 stop Denver Intl
United Airlines Logo
6:00 am - 4:57 pmYYC  Calgary-STL Lambert-St Louis
9h 57m1 stop Denver Intl
$455United Airlines
Sat, Oct 24 - Wed, Oct 28
Delta Logo
6:15 am - 11:06 pmSTL  Lambert-St Louis-YYC Calgary
17h 51m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
12:33 pm - 12:44 amYYC  Calgary-STL Lambert-St Louis
11h 11m1 stop Salt Lake City
$487Delta
Sat, Oct 3 - Wed, Oct 14
Delta Logo
6:15 am - 11:06 pmSTL  Lambert-St Louis-YYC Calgary
17h 51m2 stops Minneapolis St Paul Salt Lake City
Delta Logo
12:33 pm - 12:44 amYYC  Calgary-STL Lambert-St Louis
11h 11m1 stop Salt Lake City
$487Delta
Sat, Oct 3 - Tue, Oct 13
Air Canada Logo
4:05 pm - 1:24 amSTL  Lambert-St Louis-YYC Calgary
9h 19m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 2:26 pmYYC  Calgary-STL Lambert-St Louis
7h 26m1 stop Toronto Pearson Intl
$538Air Canada
Tue, Dec 22 - Tue, Dec 29
Air Canada Logo
4:05 pm - 1:24 amSTL  Lambert-St Louis-YYC Calgary
9h 19m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 2:26 pmYYC  Calgary-STL Lambert-St Louis
7h 26m1 stop Toronto Pearson Intl
$538Air Canada
Wed, Dec 23 - Tue, Dec 29
United Airlines Logo
6:00 am - 1:35 pmSTL  Lambert-St Louis-YYC Calgary
7h 35m1 stop Chicago O'Hare Intl
United Airlines Logo
3:06 pm - 7:59 pmYYC  Calgary-STL Lambert-St Louis
4h 53m1 stop Denver Intl
$598United Airlines
Mon, Nov 16 - Mon, Nov 16

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WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
Sep 15
STL1:55 pmLambert-St Louis
7h 20m
1 stop
YYC8:15 pmCalgary
Sep 23
YYC10:15 amCalgary
12h 01m
1 stop
STL11:16 pmLambert-St Louis
$401
WestJet
Sep 25
STL6:00 amLambert-St Louis
16h 50m
1 stop
YYC9:50 pmCalgary
Sep 29
YYC7:00 amCalgary
9h 40m
1 stop
STL5:40 pmLambert-St Louis
$403
WestJet
Sep 30
STL6:15 amLambert-St Louis
15h 27m
1 stop
YYC8:42 pmCalgary
Oct 4
YYC12:20 amCalgary
7h 40m
1 stop
STL9:00 amLambert-St Louis
$407

Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
Aug 18
STL12:10 pmLambert-St Louis
10h 22m
1 stop
YYC9:32 pmCalgary
Aug 25
YYC6:00 amCalgary
13h 46m
1 stop
STL8:46 pmLambert-St Louis
$1,097
Air Canada
Aug 18
STL12:10 pmLambert-St Louis
10h 22m
1 stop
YYC9:32 pmCalgary
Aug 25
YYC6:00 amCalgary
13h 46m
1 stop
STL8:46 pmLambert-St Louis
$1,138
Air Canada
Aug 18
STL12:10 pmLambert-St Louis
10h 22m
1 stop
YYC9:32 pmCalgary
Aug 25
YYC6:00 amCalgary
5h 40m
1 stop
STL12:40 pmLambert-St Louis
$1,344

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 August 16, 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 Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Fri 9/18

2:29 pm-9:50 pm

1 stop8h 21m

Calgary

Sun 9/20

12:20 am-1:10 pm

1 stop11h 50m

$302

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Fri 9/4

6:17 pm-11:00 am

1 stop17h 43m

Calgary

Sat 9/5

12:20 am-5:22 pm

1 stop16h 02m

$303

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 9/15

1:55 pm-8:15 pm

1 stop7h 20m

Calgary

Wed 9/23

10:15 am-11:16 pm

1 stop12h 01m

$401

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 9/15

1:55 pm-8:15 pm

1 stop7h 20m

Calgary

Wed 9/23

10:15 am-11:16 pm

1 stop12h 01m

$401

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sat 10/24

9:00 am-1:53 pm

1 stop5h 53m

Calgary

Wed 10/28

6:00 am-4:57 pm

1 stop9h 57m

$455

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sat 10/3

6:15 am-11:06 pm

2 stops17h 51m

Calgary

Wed 10/14

12:33 pm-12:44 am

1 stop11h 11m

$487

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Sat 10/3

6:15 am-11:06 pm

2 stops17h 51m

Calgary

Tue 10/13

12:33 pm-12:44 am

1 stop11h 11m

$487

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 12/22

4:05 pm-1:24 am

1 stop9h 19m

Calgary

Tue 12/29

7:00 am-2:26 pm

1 stop7h 26m

$538

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 12/23

4:05 pm-1:24 am

1 stop9h 19m

Calgary

Tue 12/29

7:00 am-2:26 pm

1 stop7h 26m

$538
Quickest round-trip

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 11/16

6:00 am-1:35 pm

1 stop7h 35m

Calgary

Mon 11/16

3:06 pm-7:59 pm

1 stop4h 53m

$598

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

Prices are currently low for flights on this route.

Typical prices usually range from $541 to $758.
The lowest price recently found on this route was $302.

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 $483. 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 $559.

How far in advance should I book a flight from St. Louis 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 $667 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 $571 on momondo.

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

As of August 2026, prices for St. Louis to Calgary flights are approximately 17% 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 08m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 6h 08m
There are no direct flights from St. Louis to Calgary. There are no popular flight routes from St. Louis to Calgary.
Search flight deals

Frequently asked questions about flying from St. Louis to Calgary

  • 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 08m, 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 $252Free CancellationRating
7.1
11,479 reviews
Search Air Canada flights
DeltaPriceFrom $267Free CancellationRating
7.8
8,502 reviews
Search Delta flights
WestJetPriceFrom $434Free CancellationRating
7.2
3,432 reviews
Search WestJet flights
United AirlinesPriceFrom $483Free CancellationRating
7.4
10,105 reviews
Search United Airlines flights
American AirlinesPriceFrom $543Free CancellationRating
7.1
11,947 reviews
Search American Airlines flights

  • United Airlines Flights From St. Louis to Calgary

    United Airlines flies from St. Louis to Calgary around 7 times per week, with 10,106 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from St. Louis to Calgary in the last 72 hours was $483 (round-trip), much lower than the average airfare cost of $713 for United Airlines flights on this route.

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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