STL - YYC

C$ 166 Find Cheap Flights from St. Louis to Calgary – Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Everything you should know

Cheapest round-trip
C$ 515
Typical prices: C$ 841-C$ 1,078
Multiple Airlines
Tue 4/12Thu 6/12
STL - YYC • 2 stops
Cheapest one-way flights
C$ 166
Typical prices: C$ 342-C$ 587
Multiple Airlines
Sun 25/11
STL - YYC • 2 stops
Direct 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 travellers 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 C$ 786 (round-trip)
Minneapolis St Paul (MSP)
Shortest trip • 5h 55m (one-way)
Insights
Insights
Start a new search
KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you enjoy your trip to Calgary!
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, 4 Dec - Sun, 6 Dec
Multiple Airlines Logo
7:58 p.m. - 10:15 a.m.STL  Lambert-St Louis-YYC Calgary
15h 17m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
9:50 a.m. - 11:57 a.m.YYC  Calgary-STL Lambert-St Louis
25h 07m2 stops Phoenix Sky Harbor Intl Denver Intl
C$ 515Multiple Airlines
1 day ago
Wed, 2 Dec - Tue, 8 Dec
Multiple Airlines Logo
7:58 p.m. - 4:10 p.m.STL  Lambert-St Louis-YYC Calgary
21h 12m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
1:25 a.m. - 12:17 p.m.YYC  Calgary-STL Lambert-St Louis
9h 52m1 stop Atlanta Hartsfield-Jackson
C$ 521Multiple Airlines
2 days ago
Fri, 4 Dec - Sun, 6 Dec
Multiple Airlines Logo
7:58 p.m. - 10:15 a.m.STL  Lambert-St Louis-YYC Calgary
15h 17m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
8:00 p.m. - 1:12 a.m.YYC  Calgary-STL Lambert-St Louis
28h 12m3 stops Phoenix Sky Harbor Intl Denver Intl Orlando
C$ 539Multiple Airlines
1 day ago
Wed, 25 Nov - Tue, 1 Dec
Multiple Airlines Logo
3:04 p.m. - 9:15 p.m.STL  Lambert-St Louis-YYC Calgary
31h 11m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
1:25 a.m. - 12:10 p.m.YYC  Calgary-STL Lambert-St Louis
9h 45m1 stop Atlanta Hartsfield-Jackson
C$ 545Multiple Airlines
2 days ago
Wed, 2 Dec - Mon, 7 Dec
Multiple Airlines Logo
7:58 p.m. - 10:15 a.m.STL  Lambert-St Louis-YYC Calgary
15h 17m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
2:55 p.m. - 1:12 a.m.YYC  Calgary-STL Lambert-St Louis
33h 17m3 stops Phoenix Sky Harbor Intl Denver Intl Orlando
C$ 548Multiple Airlines
2 days ago
Wed, 2 Dec - Wed, 9 Dec
Multiple Airlines Logo
7:58 p.m. - 9:15 p.m.STL  Lambert-St Louis-YYC Calgary
26h 17m2 stops Denver Intl Phoenix Sky Harbor Intl
Multiple Airlines Logo
2:55 p.m. - 1:12 a.m.YYC  Calgary-STL Lambert-St Louis
33h 17m3 stops Phoenix Sky Harbor Intl Denver Intl Orlando
C$ 548Multiple Airlines
2 days ago
Wed, 2 Dec - Mon, 7 Dec
Multiple Airlines Logo
7:58 p.m. - 8:30 p.m.STL  Lambert-St Louis-YYC Calgary
25h 32m3 stops Denver Intl Phoenix Sky Harbor Intl Vancouver Intl
Multiple Airlines Logo
2:55 p.m. - 1:12 a.m.YYC  Calgary-STL Lambert-St Louis
33h 17m3 stops Phoenix Sky Harbor Intl Denver Intl Orlando
C$ 555Multiple Airlines
2 days ago
Wed, 2 Dec - Wed, 9 Dec
Multiple Airlines Logo
7:58 p.m. - 8:30 p.m.STL  Lambert-St Louis-YYC Calgary
25h 32m3 stops Denver Intl Phoenix Sky Harbor Intl Vancouver Intl
Multiple Airlines Logo
2:55 p.m. - 1:12 a.m.YYC  Calgary-STL Lambert-St Louis
33h 17m3 stops Phoenix Sky Harbor Intl Denver Intl Orlando
C$ 555Multiple Airlines
2 days ago
Wed, 2 Dec - Mon, 7 Dec
Multiple Airlines Logo
12:05 p.m. - 11:05 a.m.STL  Lambert-St Louis-YYC Calgary
24h 00m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
8:00 p.m. - 12:04 p.m.YYC  Calgary-STL Lambert-St Louis
39h 04m2 stops Phoenix Sky Harbor Intl Denver Intl
C$ 559Multiple Airlines
2 days ago
Wed, 2 Dec - Tue, 8 Dec
Multiple Airlines Logo
7:58 p.m. - 8:30 p.m.STL  Lambert-St Louis-YYC Calgary
25h 32m3 stops Denver Intl Phoenix Sky Harbor Intl Vancouver Intl
Multiple Airlines Logo
1:25 a.m. - 12:17 p.m.YYC  Calgary-STL Lambert-St Louis
9h 52m1 stop Atlanta Hartsfield-Jackson
C$ 584Multiple Airlines
2 days ago
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 is the cheapest month to fly from St. Louis to Calgary?

•April is the cheapest month to fly from St. Louis to Calgary at C$ 785 round-trip.
•February (C$ 1,272) and October (C$ 1,052) 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

C$ 166
Beat the crowds with an average 79% drop in traveller numbers.
The most popular month to fly with an average 153% increase in traveller numbers.
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.

  • Which 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 does a flight from St. Louis to Calgary take?

    A direct flight from St. Louis to Calgary takes 00m, covering 3,695 km.

  • 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 C$ 841 to C$ 1,078, with an average of C$ 952 over the past 12 months. Anything below C$ 841 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 C$ 952 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 C$ 515 to C$ 2,192. That means the highest observed fare was about 4x 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 C$ 264, which is 45% 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 starting from around C$ 6 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 C$ 729 round-trip on average, while Wednesday is the most expensive at C$ 1,039, a difference of C$ 310.

    KAYAK's flexible dates feature shows options up to three 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 when travelling 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.

  • Which popular places can I visit in Calgary?

    Some of the most popular sights in Calgary are Stampede Park, Scotiabank Saddledome, and Calgary Zoo. 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 C$ 729, about C$ 310 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 C$ 785 round-trip in that month – typically C$ 487 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
    • Wingate by Wyndham Calgary Airport
    • Hotel Clique 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