YYC - STL

C$ 232 Find Cheap Flights from Calgary to St. Louis – Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 464
Typical prices: C$ 568-C$ 797
Multiple Airlines
Mon 1/10Fri 5/10
YYC - STL • 1 stop
Cheapest one-way flights
C$ 236
Typical prices: C$ 428-C$ 584
Multiple Airlines
Mon 29/10
YYC - STL • 1 stop
Direct flights
Not available
There are currently no direct flights between Calgary and St. Louis. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to travel
March
Cheapest • 19% price drop
August
Most popular
Good to know
+1
Good to know
+1
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg C$ 489 (round-trip)
Denver Intl (DEN)
Shortest trip • 5h 49m (one-way)
Insights
Insights
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We hope you enjoy your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

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

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

Thu, 1 Oct - Mon, 5 Oct
Multiple Airlines Logo
12:20 a.m. - 1:10 p.m.YYC  Calgary-STL Lambert-St Louis
11h 50m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
2:29 p.m. - 9:50 p.m.STL  Lambert-St Louis-YYC Calgary
8h 21m1 stop Atlanta Hartsfield-Jackson
C$ 464Multiple Airlines
Thu, 1 Oct - Mon, 5 Oct
Multiple Airlines Logo
12:20 a.m. - 1:10 p.m.YYC  Calgary-STL Lambert-St Louis
11h 50m1 stop Atlanta Hartsfield-Jackson
Multiple Airlines Logo
2:29 p.m. - 5:00 p.m.STL  Lambert-St Louis-YYC Calgary
27h 31m2 stops Atlanta Hartsfield-Jackson Vancouver Intl
C$ 493Multiple Airlines
Thu, 29 Oct - Thu, 5 Nov
Delta Logo
7:45 a.m. - 4:43 p.m.YYC  Calgary-STL Lambert-St Louis
7h 58m1 stop Minneapolis St Paul
Delta Logo
5:00 p.m. - 1:10 a.m.STL  Lambert-St Louis-YYC Calgary
8h 10m1 stop Salt Lake City
C$ 568Delta
Wed, 30 Sep - Sun, 4 Oct
Delta Logo
6:35 a.m. - 4:47 p.m.YYC  Calgary-STL Lambert-St Louis
9h 12m1 stop Minneapolis St Paul
Delta Logo
2:25 p.m. - 11:06 p.m.STL  Lambert-St Louis-YYC Calgary
9h 41m1 stop Salt Lake City
C$ 568Delta
Tue, 20 Oct - Wed, 21 Oct
United Airlines Logo
1:27 p.m. - 8:36 p.m.YYC  Calgary-STL Lambert-St Louis
6h 09m1 stop Denver Intl
United Airlines Logo
6:00 a.m. - 11:28 a.m.STL  Lambert-St Louis-YYC Calgary
6h 28m1 stop Chicago O'Hare Intl
C$ 568United Airlines
Sun, 1 Nov - Mon, 9 Nov
United Airlines Logo
3:06 p.m. - 8:01 p.m.YYC  Calgary-STL Lambert-St Louis
4h 55m1 stop Denver Intl
United Airlines Logo
4:39 p.m. - 11:53 p.m.STL  Lambert-St Louis-YYC Calgary
7h 14m1 stop Denver Intl
C$ 568United Airlines
Sat, 26 Sep - Tue, 29 Sep
Delta Logo
6:35 a.m. - 4:47 p.m.YYC  Calgary-STL Lambert-St Louis
9h 12m1 stop Minneapolis St Paul
Delta Logo
6:15 a.m. - 1:00 p.m.STL  Lambert-St Louis-YYC Calgary
7h 45m1 stop Minneapolis St Paul
C$ 572Delta
Mon, 30 Nov - Thu, 31 Dec
WestJet Logo
12:05 a.m. - 12:28 p.m.YYC  Calgary-STL Lambert-St Louis
12h 23m2 stops Toronto Pearson Intl Atlanta Hartsfield-Jackson
WestJet Logo
6:30 a.m. - 8:30 p.m.STL  Lambert-St Louis-YYC Calgary
14h 00m2 stops Minneapolis St Paul Vancouver Intl
C$ 708WestJet
Tue, 1 Dec - Thu, 31 Dec
WestJet Logo
9:15 a.m. - 11:05 p.m.YYC  Calgary-STL Lambert-St Louis
13h 50m2 stops Toronto Pearson Intl Atlanta Hartsfield-Jackson
WestJet Logo
6:30 a.m. - 8:30 p.m.STL  Lambert-St Louis-YYC Calgary
14h 00m2 stops Minneapolis St Paul Vancouver Intl
C$ 710WestJet
Sun, 1 Nov - Mon, 9 Nov
WestJet Logo
9:30 a.m. - 7:51 p.m.YYC  Calgary-STL Lambert-St Louis
10h 21m2 stops Montreal Pierre Elliott Trudeau Intl Detroit Metropolitan Wayne County
WestJet Logo
6:13 a.m. - 7:10 p.m.STL  Lambert-St Louis-YYC Calgary
12h 57m2 stops Minneapolis St Paul Winnipeg
C$ 715WestJet
Booking Insights

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

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

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

Saturday is the cheapest day of the week to fly from Calgary to St. Louis and is 11% cheaper than the average day. Tuesday is the most expensive day with flight prices 17% higher than average. Based on deals found by KAYAK users in the last 12 months.

Find deals

Key details for Calgary to St. Louis flights

Low season

January

Cheapest flight

C$ 236
Best time to beat the crowds but there is an average 19% increase in price.
Most popular time to fly and prices are also 13% lower on average.
Flights from Calgary to St. Louis

When to book flights from Calgary to St. Louis

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

Your Calgary to St. Louis 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 Calgary to St. Louis?

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

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

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

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

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

    • Minneapolis St Paul (MSP) – 33% of one-stop connections
    • Atlanta Hartsfield-Jackson (ATL) – 25% of one-stop connections
    • Chicago O'Hare Intl (ORD) – 17% of one-stop connections
    • Detroit Metropolitan Wayne County (DTW) – 8% of one-stop connections

    Minneapolis St Paul (MSP) handles the largest share of one-stop connections on this route.

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

    On the Calgary to St. Louis route, being flexible with your departure day can save you up to 24%. Saturday is the cheapest day at C$ 608 round-trip on average, while Tuesday is the most expensive at C$ 797 – a C$ 189 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

  • Which popular places can I visit in St. Louis?

    Some of the most popular sights in St. Louis are Forest Park Hotel, Hyatt Regency St Louis At The Arch, and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

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

    A direct flight from Calgary to St. Louis takes 0h 00m, covering 3,695 km.

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

    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 Calgary to St. Louis 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$ 464 to C$ 1,851. That means the highest observed fare was about 4x higher than the lowest one.

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

    One-way fares from Calgary to St. Louis are currently in line with typical prices for this route. Average one-way fares are about C$ 506.

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

    Flying via Denver Intl (DEN) gives the shortest average 1-stop total travel time at 5h 49m, compared with 6h 23m via Chicago O'Hare Intl (ORD) and 7h 09m via Minneapolis St Paul (MSP).

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

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

  • What car rental options are available at Lambert-St Louis Airport (STL)?

    Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around C$ 42 for economy cars. Top options include:
    • Hertz
    • Budget
    • Alamo
    • Enterprise Rent-A-Car
    • Payless

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

    Round-trip flights from Calgary to St. Louis range from C$ 568 to C$ 797, with an average of C$ 678 over the past 12 months. Anything below C$ 568 counts as a good deal.

Your guide to booking Calgary to St. Louis 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 Saturday departure instead of Tuesday. On this route, Saturday flights average C$ 608 – about C$ 189 less than Tuesday (24% savings) based on the last 12 months.
  • If you can choose when to travel, plan your Calgary to St. Louis trip for March. Fares historically average C$ 546 round-trip in that month – typically C$ 347 less than the most expensive month, which is November (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Lambert-St Louis Airport.
    - Drury Inn & Suites St. Louis Airport
    - Renaissance St. Louis Airport Hotel
    - DoubleTree by Hilton St. Louis Airport

More options for your flight from Calgary to St. Louis

Complete your trip to St. Louis with a hotel stay or car rental

Car rentals in St. Louis
Hotels in St. Louis
Vacations in St. Louis