STL - YYC

$161 Find Cheap Flights from St. Louis to Calgary - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$312
Typical prices: $604-$763
Multiple Airlines
Fri 11/9Mon 11/12
STL - YYC • 1 stop
Cheapest one-way
$161
Typical prices: $233-$403
Multiple Airlines
Tue 10/9
STL - YYC • 1 stop
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 30% 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

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

Mon, Nov 9 - Thu, Nov 12
Multiple Airlines Logo
6:44 pm - 1:05 pmSTL  Lambert-St Louis-YYC Calgary
18h 21m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
1:25 am - 4:40 pmYYC  Calgary-STL Lambert-St Louis
15h 15m1 stop Atlanta Hartsfield-Jackson
$312Multiple Airlines
Fri, Sep 25 - Tue, Sep 29
Multiple Airlines Logo
2:00 pm - 10:15 pmSTL  Lambert-St Louis-YYC Calgary
9h 15m2 stops Jonesboro Nashville Intl
Multiple Airlines Logo
7:00 am - 1:10 pmYYC  Calgary-STL Lambert-St Louis
29h 10m1 stop Atlanta Hartsfield-Jackson
$354Multiple Airlines
Tue, Oct 20 - Sat, Oct 24
American Airlines Logo
5:27 pm - 12:51 pmSTL  Lambert-St Louis-YYC Calgary
20h 24m1 stop Chicago O'Hare Intl
American Airlines Logo
1:51 pm - 12:19 amYYC  Calgary-STL Lambert-St Louis
9h 28m1 stop Chicago O'Hare Intl
$389American Airlines
Tue, Oct 20 - Sat, Oct 24
American Airlines Logo
5:27 pm - 12:51 pmSTL  Lambert-St Louis-YYC Calgary
20h 24m1 stop Chicago O'Hare Intl
American Airlines Logo
1:51 pm - 12:19 amYYC  Calgary-STL Lambert-St Louis
9h 28m1 stop Chicago O'Hare Intl
$410American Airlines
Sun, Nov 22 - Sat, Nov 28
Air Canada Logo
4:05 pm - 1:06 amSTL  Lambert-St Louis-YYC Calgary
9h 01m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 2:26 pmYYC  Calgary-STL Lambert-St Louis
7h 26m1 stop Toronto Pearson Intl
$434Air Canada
Tue, Nov 10 - Thu, Nov 12
Air Canada Logo
4:05 pm - 1:06 amSTL  Lambert-St Louis-YYC Calgary
9h 01m1 stop Toronto Pearson Intl
Air Canada Logo
7:00 am - 2:26 pmYYC  Calgary-STL Lambert-St Louis
7h 26m1 stop Toronto Pearson Intl
$434Air Canada
Fri, Sep 25 - Sat, Oct 3
Delta Logo
2:25 pm - 11:06 pmSTL  Lambert-St Louis-YYC Calgary
9h 41m1 stop Salt Lake City
Delta Logo
6:35 am - 4:47 pmYYC  Calgary-STL Lambert-St Louis
9h 12m1 stop Minneapolis St Paul
$494Delta
Sun, Nov 22 - Sat, Nov 28
United Airlines Logo
8:50 am - 11:53 pmSTL  Lambert-St Louis-YYC Calgary
15h 03m1 stop Denver Intl
United Airlines Logo
3:06 pm - 10:39 pmYYC  Calgary-STL Lambert-St Louis
7h 33m1 stop Denver Intl
$496United Airlines
Mon, Nov 23 - Sat, Nov 28
United Airlines Logo
8:40 am - 4:21 pmSTL  Lambert-St Louis-YYC Calgary
7h 41m1 stop Denver Intl
United Airlines Logo
3:06 pm - 10:39 pmYYC  Calgary-STL Lambert-St Louis
7h 33m1 stop Denver Intl
$496United Airlines
Wed, Nov 25 - Mon, Nov 30
Delta Logo
2:20 pm - 1:17 amSTL  Lambert-St Louis-YYC Calgary
10h 57m1 stop Salt Lake City
Delta Logo
1:35 pm - 11:40 pmYYC  Calgary-STL Lambert-St Louis
10h 05m1 stop Salt Lake City
$500Delta
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 from St. Louis to Calgary with more confidence.

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

Tuesday is the cheapest day of the week to fly from St. Louis to Calgary, it is 22% cheaper than the average day. Sunday is the most expensive day with flight prices 6% higher than average. Based on deals found by KAYAK users in the last 12 months.

What is 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 December ($761) 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 prices 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 30% 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

$161
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 9% increase in price.
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 route details based on KAYAK data, including flight times, airports, airlines and booking questions.

  • 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).

  • 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.

  • 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) - 49% of one-stop connections
    • Minneapolis St Paul (MSP) - 20% of one-stop connections
    • Denver Intl (DEN) - 19% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) - 5% of one-stop connections

    Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

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

    Yes. Being flexible with your travel dates can save you up to 26% on the St. Louis to Calgary route. Tuesday is the cheapest departure day at $538 round-trip on average, while Sunday is the most expensive at $727, a difference of $189. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • 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.

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

    Last-minute fares on this route - booked within 2 weeks of departure - run 12% above the route average of $682. Book 18 weeks before departure for the lowest fares.

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

    A nonstop flight from St. Louis to Calgary takes 0h 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.

  • 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 $312 to $959. That means the highest observed fare was about 3x 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 $229, which is 32% below the typical average for this route.

  • 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 07m via Denver Intl (DEN) and 6h 42m 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 car rental options are available at Calgary Airport (YYC)?

    Calgary Airport (YYC) hosts 5 major car rental companies, with daily rates starting from around $4 for economy cars. Top options include:
    • Routes Car & Truck Rentals
    • Avis
    • Thrifty
    • Budget
    • Hertz

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

    Round-trip flights from St. Louis to Calgary range from $604 to $763, with an average of $682 over the past 12 months. Anything below $604 counts as a good deal.

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 can be flexible, aim for a Tuesday departure instead of Sunday. On this route, Tuesday flights average $538 - about $189 less than Sunday (26% 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 30% 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.
    - Comfort Inn & Suites Calgary Airport - North
    - Hyatt Place Calgary Airport
    - Hotel 11, Mod A Sonesta Collection

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