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Cheap flights from St. Louis to Calgary from $298

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
6:34 pm - 1:05 pmSTL  Lambert-St Louis-YYC Calgary
18h 31m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
8:00 pm - 2:23 pmYYC  Calgary-STL Lambert-St Louis
42h 23m2 stops Phoenix Sky Harbor Intl Denver Intl
$404Multiple Airlines
Wed, Nov 11 - Mon, Nov 16
Multiple Airlines Logo
6:34 pm - 1:05 pmSTL  Lambert-St Louis-YYC Calgary
18h 31m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
8:00 pm - 2:23 pmYYC  Calgary-STL Lambert-St Louis
18h 23m2 stops Phoenix Sky Harbor Intl Denver Intl
$427Multiple Airlines
Wed, Nov 11 - Tue, Nov 17
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
$507Air Canada
Tue, Dec 1 - Tue, Dec 8
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
$513Air Canada
Tue, Dec 1 - Tue, Dec 8
Delta Logo
6:03 am - 2:20 pmSTL  Lambert-St Louis-YYC Calgary
8h 17m1 stop Minneapolis St Paul
Delta Logo
7:25 am - 12:21 pmYYC  Calgary-STL Lambert-St Louis
4h 56m1 stop Salt Lake City
$571Delta
Tue, Dec 1 - Tue, Dec 8
American Airlines Logo
5:00 am - 1:39 pmSTL  Lambert-St Louis-YYC Calgary
8h 39m1 stop Dallas/Fort Worth
American Airlines Logo
7:00 am - 6:50 pmYYC  Calgary-STL Lambert-St Louis
11h 50m2 stops Dallas/Fort Worth Chicago O'Hare Intl
$588American Airlines
Tue, Nov 24 - Fri, Nov 27
American Airlines Logo
2:48 pm - 11:47 pmSTL  Lambert-St Louis-YYC Calgary
8h 59m1 stop Dallas/Fort Worth
American Airlines Logo
1:25 pm - 8:59 pmYYC  Calgary-STL Lambert-St Louis
7h 34m1 stop Dallas/Fort Worth
$589American Airlines
Tue, Nov 24 - Fri, Nov 27
Delta Logo
6:13 am - 2:15 pmSTL  Lambert-St Louis-YYC Calgary
8h 02m1 stop Minneapolis St Paul
Delta Logo
8:45 am - 1:41 pmYYC  Calgary-STL Lambert-St Louis
4h 56m1 stop Minneapolis St Paul
$589Delta
Tue, Nov 24 - Fri, Nov 27
United Airlines Logo
4:39 pm - 11:53 pmSTL  Lambert-St Louis-YYC Calgary
7h 14m1 stop Denver Intl
United Airlines Logo
7:00 am - 10:39 pmYYC  Calgary-STL Lambert-St Louis
15h 39m1 stop Denver Intl
$619United Airlines
Mon, Nov 23 - Sat, Nov 28
United Airlines Logo
8:40 am - 10:53 pmSTL  Lambert-St Louis-YYC Calgary
14h 13m1 stop Denver Intl
United Airlines Logo
7:00 am - 12:38 pmYYC  Calgary-STL Lambert-St Louis
5h 38m1 stop Denver Intl
$619United Airlines
Mon, Nov 23 - Sat, Nov 28

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Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
Dec 1
STL4:05 pmLambert-St Louis
9h 19m
1 stop
YYC1:24 amCalgary
Dec 8
YYC7:00 amCalgary
7h 26m
1 stop
STL2:26 pmLambert-St Louis
$507
Air Canada
Dec 1
STL9:40 amLambert-St Louis
16h 10m
2 stops
YYC1:50 amCalgary
Dec 8
YYC12:35 pmCalgary
9h 24m
2 stops
STL9:59 pmLambert-St Louis
$625
Air Canada
Nov 22
STL4:05 pmLambert-St Louis
9h 01m
1 stop
YYC1:06 amCalgary
Nov 28
YYC7:00 amCalgary
7h 26m
1 stop
STL2:26 pmLambert-St Louis
$629

Delta flights from St. Louis to Calgary

Our best Delta deals on St. Louis to Calgary flight tickets
Delta
Dec 1
STL6:03 amLambert-St Louis
8h 17m
1 stop
YYC2:20 pmCalgary
Dec 8
YYC7:25 amCalgary
4h 56m
1 stop
STL12:21 pmLambert-St Louis
$571
Delta
Dec 9
STL2:15 pmLambert-St Louis
11h 06m
1 stop
YYC1:21 amCalgary
Dec 13
YYC8:45 amCalgary
6h 45m
1 stop
STL3:30 pmLambert-St Louis
$589
Delta
Dec 9
STL2:15 pmLambert-St Louis
11h 06m
1 stop
YYC1:21 amCalgary
Dec 13
YYC7:25 amCalgary
12h 07m
2 stops
STL7:32 pmLambert-St Louis
$599

momondo Fare Finder

 
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.

Fly from

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Route

Depart

Return

Price

Cheapest round-trip

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 11/11

6:34 pm-1:05 pm

1 stop18h 31m

Calgary

Mon 11/16

8:00 pm-2:23 pm

2 stops42h 23m

$404

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Wed 11/11

6:34 pm-1:05 pm

1 stop18h 31m

Calgary

Tue 11/17

8:00 pm-2:23 pm

2 stops18h 23m

$427

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 12/1

4:05 pm-1:24 am

1 stop9h 19m

Calgary

Tue 12/8

7:00 am-2:26 pm

1 stop7h 26m

$507

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 12/1

4:05 pm-1:24 am

1 stop9h 19m

Calgary

Tue 12/8

7:00 am-2:26 pm

1 stop7h 26m

$513

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 12/1

6:03 am-2:20 pm

1 stop8h 17m

Calgary

Tue 12/8

7:25 am-12:21 pm

1 stop4h 56m

$571

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 11/24

5:00 am-1:39 pm

1 stop8h 39m

Calgary

Fri 11/27

7:00 am-6:50 pm

2 stops11h 50m

$588

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 11/24

2:48 pm-11:47 pm

1 stop8h 59m

Calgary

Fri 11/27

1:25 pm-8:59 pm

1 stop7h 34m

$589
Quickest round-trip

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Tue 11/24

6:13 am-2:15 pm

1 stop8h 02m

Calgary

Fri 11/27

8:45 am-1:41 pm

1 stop4h 56m

$589

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 11/23

4:39 pm-11:53 pm

1 stop7h 14m

Calgary

Sat 11/28

7:00 am-10:39 pm

1 stop15h 39m

$619

St. LouisCalgary

STL Lambert-St Louis - YYC Calgary

STLYYC

Lambert-St Louis

Mon 11/23

8:40 am-10:53 pm

1 stop14h 13m

Calgary

Sat 11/28

7:00 am-12:38 pm

1 stop5h 38m

$619

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 April is, on average, the cheapest month to fly to Calgary from St. Louis, with most prices found around $519. If you aren’t able to travel during the month of April, then book flights to Calgary from St. Louis during November instead. Flights to Calgary in November, while not as cheap as those in April, still average around $606.

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 $690 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 October 2026, prices for St. Louis to Calgary flights are approximately 54% 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

Best Price Found

$298

Fastest flight time

6h 14m

Direct flights

None
The best one-way flight to Calgary from St. Louis in the past 72 hours is $298. The best round-trip flight deal from St. Louis to Calgary found on momondo in the last 72 hours is $404.
The fastest flight from St. Louis to Calgary takes 6h 14m
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 14m, 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
11,782 reviews
Search Air Canada flights
DeltaPriceFrom $266Free CancellationRating
7.8
8,651 reviews
Search Delta flights
United AirlinesPriceFrom $427Free CancellationRating
7.3
10,387 reviews
Search United Airlines flights
WestJetPriceFrom $434Free CancellationRating
7.2
3,447 reviews
Search WestJet flights
American AirlinesPriceFrom $557Free CancellationRating
7.0
12,173 reviews
Search American Airlines flights

  • United Airlines Flights From St. Louis to Calgary

    United Airlines flies from St. Louis to Calgary around 8 times per week, with 10,387 momondo users rating the airline 7.3/10. The cheapest United Airlines deal from St. Louis to Calgary in the last 72 hours was $427 (round-trip), much lower than the average airfare cost of $704 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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