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Cheap flights from St. Louis to Calgary from $221

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 5/29. 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
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
7:00 am - 6:50 am
YYC
-
STL
22h 50m
1 stop
$281Multiple Airlines
Wed, Apr 29 - Tue, May 5
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
8:45 am - 7:32 pm
YYC
-
STL
9h 47m
1 stop
$290Multiple Airlines
Wed, Apr 29 - Mon, May 4
American Airlines Logo
8:03 pm - 12:59 pm
STL
-
YYC
17h 56m
1 stop
American Airlines Logo
1:40 pm - 11:56 pm
YYC
-
STL
9h 16m
1 stop
$302American Airlines
Tue, Apr 28 - Thu, May 7
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
7:00 am - 6:50 am
YYC
-
STL
22h 50m
1 stop
$303Multiple Airlines
Sat, Apr 25 - Tue, May 5
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
12:30 am - 7:12 pm
YYC
-
STL
17h 42m
2 stops
$307Multiple Airlines
Wed, Apr 29 - Fri, May 8
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
8:45 am - 7:32 pm
YYC
-
STL
9h 47m
1 stop
$312Multiple Airlines
Mon, Apr 27 - Mon, May 4
American Airlines Logo
5:21 pm - 12:59 pm
STL
-
YYC
20h 38m
1 stop
American Airlines Logo
1:40 pm - 11:46 pm
YYC
-
STL
9h 06m
1 stop
$319American Airlines
Sun, Apr 12 - Fri, Apr 17
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
9:00 pm - 10:30 am
YYC
-
STL
12h 30m
2 stops
$324Multiple Airlines
Wed, Apr 29 - Wed, May 6
Multiple Airlines Logo
8:23 pm - 11:00 am
STL
-
YYC
15h 37m
1 stop
Multiple Airlines Logo
7:00 am - 10:30 am
YYC
-
STL
26h 30m
1 stop
$325Multiple Airlines
Mon, Apr 27 - Wed, May 6
American Airlines Logo
8:03 pm - 12:59 pm
STL
-
YYC
17h 56m
1 stop
American Airlines Logo
6:45 am - 11:46 pm
YYC
-
STL
16h 01m
2 stops
$328American Airlines
Sun, Apr 12 - Fri, Apr 17

United Airlines flights from St. Louis to Calgary

Our best United Airlines deals on St. Louis to Calgary flight tickets
United Airlines
Apr 27
STL8:15 pmLambert-St Louis
16h 17m
1 stop
YYC11:32 amCalgary
May 7
YYC12:34 pmCalgary
9h 11m
1 stop
STL10:45 pmLambert-St Louis
$450
United Airlines
Apr 27
STL8:15 pmLambert-St Louis
16h 17m
1 stop
YYC11:32 amCalgary
May 9
YYC1:27 pmCalgary
20h 21m
2 stops
STL10:48 amLambert-St Louis
$460
United Airlines
Apr 27
STL8:15 pmLambert-St Louis
16h 17m
1 stop
YYC11:32 amCalgary
May 8
YYC1:27 pmCalgary
20h 21m
2 stops
STL10:48 amLambert-St Louis
$487

Air Canada flights from St. Louis to Calgary

Our best Air Canada deals on St. Louis to Calgary flight tickets
Air Canada
Apr 5
STL4:05 pmLambert-St Louis
9h 18m
1 stop
YYC12:23 amCalgary
Apr 12
YYC5:45 amCalgary
8h 39m
1 stop
STL3:24 pmLambert-St Louis
$481
Air Canada
Apr 4
STL9:16 amLambert-St Louis
12h 12m
2 stops
YYC8:28 pmCalgary
Apr 11
YYC7:00 amCalgary
7h 24m
1 stop
STL3:24 pmLambert-St Louis
$492
Air Canada
May 1
STL1:00 pmLambert-St Louis
9h 22m
1 stop
YYC9:22 pmCalgary
May 6
YYC9:20 amCalgary
9h 44m
2 stops
STL8:04 pmLambert-St Louis
$504

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 February 21, 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 4/29

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Tue 5/5

7:00 am-6:50 am

1 stop22h 50m

$281

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 4/29

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Mon 5/4

8:45 am-7:32 pm

1 stop9h 47m

$290

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 4/28

8:03 pm-12:59 pm

1 stop17h 56m

Calgary

Thu 5/7

1:40 pm-11:56 pm

1 stop9h 16m

$302

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 4/25

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Tue 5/5

7:00 am-6:50 am

1 stop22h 50m

$303

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 4/29

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Fri 5/8

12:30 am-7:12 pm

2 stops17h 42m

$307

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 4/27

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Mon 5/4

8:45 am-7:32 pm

1 stop9h 47m

$312

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 4/12

5:21 pm-12:59 pm

1 stop20h 38m

Calgary

Fri 4/17

1:40 pm-11:46 pm

1 stop9h 06m

$319

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Wed 4/29

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Wed 5/6

9:00 pm-10:30 am

2 stops12h 30m

$324

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 4/27

8:23 pm-11:00 am

1 stop15h 37m

Calgary

Wed 5/6

7:00 am-10:30 am

1 stop26h 30m

$325

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 4/12

8:03 pm-12:59 pm

1 stop17h 56m

Calgary

Fri 4/17

6:45 am-11:46 pm

2 stops16h 01m

$328

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 April instead. Flights to Calgary in April, while not as cheap as those in November, still average around $398.

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 $558 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 $478 on momondo.

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

As of February 2026, prices for St. Louis to Calgary flights are approximately 6% 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 23m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 6h 23m
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 6h 23m, 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
10,734 reviews
Search Air Canada flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,228 reviews
Search Delta flights
United AirlinesPriceFrom $291Free CancellationRating
7.4
9,335 reviews
Search United Airlines flights
American AirlinesPriceFrom $398Free CancellationRating
7.2
11,334 reviews
Search American Airlines flights
WestJetPriceFrom $490Free CancellationRating
7.2
3,270 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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