STL - YYC

$118 Find Cheap Flights from St. Louis to Calgary - Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$367
Typical prices: $599-$768
Multiple Airlines
Tue 12/4Thu 12/6
STL - YYC • 2 stops
Cheapest one-way
$118
Typical prices: $244-$418
Multiple Airlines
Sun 11/25
STL - YYC • 2 stops
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Calgary. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
18 weeks
in advance
Our data shows that travelers who book at least 18 weeks in advance save around 29% compared to booking last minute.
Insights
Insights
When to travel
April
Cheapest • 18% price drop
July
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Detroit Metropolitan Wayne County (DTW)
Cheapest • Avg $560 (round-trip)
Minneapolis St Paul (MSP)
Shortest trip • 5h 55m (one-way)
Insights
Insights
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Flight Deals
Booking Insights
Flight Deals

Cheap Flights from St. Louis to Calgary (STL-YYC)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Calgary

Fri, Dec 4 - Sun, Dec 6
Multiple Airlines Logo
7:58 pm - 10:15 amSTL  Lambert-St Louis-YYC Calgary
15h 17m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
9:50 am - 11:57 amYYC  Calgary-STL Lambert-St Louis
25h 07m2 stops Phoenix Sky Harbor Intl Denver Intl
$367Multiple Airlines
Wed, Dec 2 - Tue, Dec 8
Multiple Airlines Logo
7:58 pm - 4:10 pmSTL  Lambert-St Louis-YYC Calgary
21h 12m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
1:25 am - 12:17 pmYYC  Calgary-STL Lambert-St Louis
9h 52m1 stop Atlanta Hartsfield-Jackson
$371Multiple Airlines
Sun, Nov 22 - Sat, Nov 28
United Airlines Logo
1:40 pm - 9:53 pmSTL  Lambert-St Louis-YYC Calgary
9h 13m1 stop Denver Intl
United Airlines Logo
7:00 am - 12:39 amYYC  Calgary-STL Lambert-St Louis
16h 39m1 stop Denver Intl
$532United Airlines
Fri, Dec 11 - Fri, Dec 18
American Airlines Logo
2:54 pm - 9:58 pmSTL  Lambert-St Louis-YYC Calgary
8h 04m1 stop Dallas/Fort Worth
American Airlines Logo
3:19 pm - 9:29 amYYC  Calgary-STL Lambert-St Louis
17h 10m1 stop Chicago O'Hare Intl
$540American Airlines
Wed, Jan 20 - Thu, Jan 28
United Airlines Logo
8:52 am - 2:21 pmSTL  Lambert-St Louis-YYC Calgary
6h 29m1 stop Denver Intl
United Airlines Logo
7:00 am - 3:03 pmYYC  Calgary-STL Lambert-St Louis
7h 03m1 stop Denver Intl
$541United Airlines
Wed, Dec 9 - Sun, Dec 13
WestJet Logo
12:31 pm - 9:07 pmSTL  Lambert-St Louis-YYC Calgary
9h 36m1 stop Minneapolis St Paul
WestJet Logo
2:25 pm - 12:26 amYYC  Calgary-STL Lambert-St Louis
9h 01m1 stop Minneapolis St Paul
$542WestJet
Mon, Nov 23 - Sat, Nov 28
Air Canada Logo
4:05 pm - 11:06 pmSTL  Lambert-St Louis-YYC Calgary
8h 01m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 4:26 pmYYC  Calgary-STL Lambert-St Louis
8h 26m1 stop Toronto Pearson Intl
$542Air Canada
Sun, Nov 22 - Sat, Nov 28
Air Canada Logo
4:05 pm - 11:06 pmSTL  Lambert-St Louis-YYC Calgary
8h 01m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 4:26 pmYYC  Calgary-STL Lambert-St Louis
8h 26m1 stop Toronto Pearson Intl
$542Air Canada
Tue, Nov 24 - Fri, Nov 27
American Airlines Logo
5:00 am - 11:39 amSTL  Lambert-St Louis-YYC Calgary
7h 39m1 stop Dallas/Fort Worth
American Airlines Logo
1:25 pm - 10:59 pmYYC  Calgary-STL Lambert-St Louis
8h 34m1 stop Dallas/Fort Worth
$545American Airlines
Fri, Mar 19 - Mon, Mar 22
WestJet Logo
9:45 am - 5:55 pmSTL  Lambert-St Louis-YYC Calgary
9h 10m2 stops Minneapolis St Paul Edmonton
WestJet Logo
8:45 am - 2:43 pmYYC  Calgary-STL Lambert-St Louis
28h 58m1 stop Atlanta Hartsfield-Jackson
$746WestJet
Booking Insights

Price, demand and travel trends for St. Louis to Calgary flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What's the cheapest day of the week to fly from St. Louis to Calgary?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from St. Louis to Calgary. It’s 24% cheaper than the average day, while Wednesday is the most expensive, with prices 9% higher.

What’s the cheapest month to fly from St. Louis to Calgary?

•April is the cheapest month to fly from St. Louis to Calgary at $559 round-trip.
•February ($906) and October ($749) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 62% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from St. Louis to Calgary the cheapest?

Flights from St. Louis to Calgary are cheapest 18 weeks before departure. Booking in this window typically costs about 29% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

Find deals

Key details for St. Louis to Calgary flights

Low season

March

Cheapest flight

$118
Beat the crowds with an average 79% drop in travelers.
The most popular month to fly with an average 153% increase in travelers.
One-way flight from St. Louis to Calgary

When to book flights from St. Louis to Calgary

Are your dates flexible? Find out the best times to travel from St. Louis to Calgary based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your St. Louis to Calgary flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • What cabin classes can I book on flights from St. Louis to Calgary?

    Only Economy Class is available on flights from St. Louis to Calgary.

  • How long is a flight from St. Louis to Calgary?

    A nonstop flight from St. Louis to Calgary takes 00m, covering 1,427 miles.

  • Do I need a passport to fly from St. Louis to Calgary?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a St. Louis to Calgary flight?

    Round-trip flights from St. Louis to Calgary range from $599 to $768, with an average of $678 over the past 12 months. Anything below $599 counts as a good deal.

  • How expensive are last-minute St. Louis to Calgary flights?

    Last-minute fares on this route (booked within two weeks of departure) run 12% above the $678 route average. Book 18 weeks before departure for the lowest fares.

  • Have flight prices from St. Louis to Calgary changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $367 to $1,931. That means the highest observed fare was about 5x higher than the lowest one.

  • How are flight prices from St. Louis to Calgary looking right now?

    One-way fares from St. Louis to Calgary are currently lower than usual. Average one-way flight prices are about $231, which is 32% below the typical average for this route.

  • What car rental options are available at Calgary Airport (YYC)?

    Calgary Airport (YYC) hosts 5 major car rental companies, with daily rates averaging $60 for economy cars. Top options include:

    • Routes Car & Truck Rentals
    • Avis
    • Budget
    • Thrifty
    • Hertz

  • Which airports can I use when flying from St. Louis to Calgary?

    Flights from St. Louis to Calgary usually depart from Lambert-St Louis (STL) and arrive at Calgary (YYC).

  • Which airports do connecting flights from St. Louis to Calgary pass through?

    One-stop flights from St. Louis to Calgary most commonly connect through:

    • Chicago O'Hare Intl (ORD) - 43% of one-stop connections
    • Denver Intl (DEN) - 25% of one-stop connections
    • Minneapolis St Paul (MSP) - 19% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 5% of one-stop connections

  • Can I save money by using flexible dates for flights from St. Louis to Calgary?

    Yes. Flexible dates can save you up to 30% on flights from St. Louis to Calgary. Tuesday is the cheapest departure day at $519 round-trip on average, while Wednesday is the most expensive at $740, a difference of $221.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from St. Louis to Calgary?

    Flying via Minneapolis St Paul (MSP) gives the shortest average 1-stop total travel time at 5h 55m, compared with 6h 09m via Denver Intl (DEN) and 6h 33m via Chicago O'Hare Intl (ORD).

  • What is the time difference between St. Louis and Calgary?

    Calgary is 1 hour behind St. Louis (Mountain Time vs Central Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Calgary?

    Some of the most popular sights in Calgary are Scotiabank Saddledome, Stampede Park and Central Memorial Park. These are among the most viewed places in Calgary on KAYAK.

Your guide to booking St. Louis to Calgary flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Wednesday. On this route, Tuesday flights average $519, about $221 less than Wednesday fares (30% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 18 weeks before you fly. On this route, that window historically saves about 29% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your St. Louis to Calgary trip for April. Fares historically average $559 round-trip in that month - typically $347 less than the most expensive month, which is February (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Calgary Airport.

    • Hotel 11, Mod A Sonesta Collection
    • Hotel Clique Calgary Airport
    • Wingate by Wyndham Calgary Airport

More options for your flight from St. Louis to Calgary

Complete your trip to Calgary with a hotel stay or car rental

Car rentals in Calgary
Hotels in Calgary
Vacations in Calgary