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Cheap flights from St. Louis to Calgary from $247

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Calgary departing on 2/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:43 pm - 11:43 amSTL-YYC
17h 00m2 stops
Multiple Airlines Logo
12:30 am - 9:47 amYYC-STL
8h 17m1 stop
$247Multiple Airlines
Find Deal
Mon, Feb 23 - Thu, Feb 26
Multiple Airlines Logo
10:06 am - 7:35 pmSTL-YYC
34h 29m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$268Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
8:22 pm - 11:44 amSTL-YYC
16h 22m1 stop
Multiple Airlines Logo
12:30 am - 6:51 amYYC-STL
29h 21m1 stop
$269Multiple Airlines
Find Deal
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
10:06 am - 7:35 pmSTL-YYC
34h 29m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$271Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
8:22 pm - 11:44 amSTL-YYC
16h 22m1 stop
Multiple Airlines Logo
8:10 am - 11:33 pmYYC-STL
14h 23m2 stops
$285Multiple Airlines
Find Deal
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
10:06 am - 7:35 pmSTL-YYC
34h 29m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$288Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
1:35 pm - 10:52 pmSTL-YYC
34h 17m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$290Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
10:09 pm - 10:52 pmSTL-YYC
25h 43m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$294Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
10:06 am - 5:15 pmSTL-YYC
32h 09m2 stops
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$295Multiple Airlines
Find Deal
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
8:22 pm - 11:43 amSTL-YYC
16h 21m1 stop
Multiple Airlines Logo
8:55 am - 6:51 amYYC-STL
20h 56m1 stop
$296Multiple Airlines
Find Deal
Mon, Feb 2 - Fri, Feb 6

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
Jan 18
STL1:35 pmLambert-St Louis
24h 13m
1 stop
YYC12:48 pmCalgary
Jan 25
YYC1:40 pmCalgary
22h 23m
1 stop
STL1:03 pmLambert-St Louis
$336
Find similar
American Airlines
Jan 18
STL6:44 pmLambert-St Louis
19h 04m
1 stop
YYC12:48 pmCalgary
Jan 25
YYC1:40 pmCalgary
22h 23m
1 stop
STL1:03 pmLambert-St Louis
$343
Find similar
American Airlines
Feb 23
STL6:33 pmLambert-St Louis
19h 26m
1 stop
YYC12:59 pmCalgary
Feb 27
YYC1:30 pmCalgary
19h 03m
1 stop
STL9:33 amLambert-St Louis
$395
Find similar

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
Dec 2
STL6:00 amLambert-St Louis
15h 57m
1 stop
YYC8:57 pmCalgary
Dec 8
YYC12:30 amCalgary
9h 15m
1 stop
STL10:45 amLambert-St Louis
$660
Find similar
WestJet
Dec 2
STL6:00 amLambert-St Louis
11h 15m
2 stops
YYC4:15 pmCalgary
Dec 8
YYC12:45 amCalgary
14h 07m
2 stops
STL3:52 pmLambert-St Louis
$688
Find similar
WestJet
Nov 23
STL6:00 amLambert-St Louis
11h 16m
2 stops
YYC4:16 pmCalgary
Nov 30
YYC2:35 pmCalgary
31h 48m
2 stops
STL11:23 pmLambert-St Louis
$726
Find similar

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 November 19, 2025.
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

Mon 2/23

7:43 pm-11:43 am

2 stops17h 00m

Calgary

Thu 2/26

12:30 am-9:47 am

1 stop8h 17m

$247

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:06 am-7:35 pm

2 stops34h 29m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$268

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/24

8:22 pm-11:44 am

1 stop16h 22m

Calgary

Sat 1/31

12:30 am-6:51 am

1 stop29h 21m

$269

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:06 am-7:35 pm

2 stops34h 29m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$271

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 1/24

8:22 pm-11:44 am

1 stop16h 22m

Calgary

Sat 1/31

8:10 am-11:33 pm

2 stops14h 23m

$285

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:06 am-7:35 pm

2 stops34h 29m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$288

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

1:35 pm-10:52 pm

2 stops34h 17m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$290

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:09 pm-10:52 pm

2 stops25h 43m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$294

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 1/18

10:06 am-5:15 pm

2 stops32h 09m

Calgary

Sun 1/25

8:55 am-6:51 am

1 stop20h 56m

$295

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 2/2

8:22 pm-11:43 am

1 stop16h 21m

Calgary

Fri 2/6

8:55 am-6:51 am

1 stop20h 56m

$296

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 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 January is, on average, the cheapest month to fly to Calgary from St. Louis, with most prices found around $351. If you aren’t able to travel during the month of January, then book flights to Calgary from St. Louis during April instead. Flights to Calgary in April, while not as cheap as those in January, still average around $443.

What is the cheapest day to depart on your flight to Calgary?

The cheapest day to depart on your flight to Calgary is on a Tuesday when prices can be found for as low as $456. This is often the case because there is less demand to fly during this day of the week. Flights from St. Louis to Calgary on a Sunday will generally be more expensive and average around $617. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Calgary?

The cheapest time of day to fly to Calgary is at noon when flights can be purchased for as low as $499. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $628 on average. Flights to Calgary from St. Louis in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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 $568 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 $395 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

Direct flights

None
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 21m, 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 $158Free CancellationRating
7.1
10,462 reviews
Search Air Canada flights
DeltaPriceFrom $190Free CancellationRating
7.9
8,004 reviews
Search Delta flights
United AirlinesPriceFrom $331Free CancellationRating
7.4
9,025 reviews
Search United Airlines flights
American AirlinesPriceFrom $383Free CancellationRating
7.2
11,046 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,168 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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