STL - YYC

$145 Find Cheap Flights from St. Louis to Calgary - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Calgary departing on 10/5. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$309
Typical prices: $573-$755
Multiple Airlines
Mon 8/24Mon 8/31
STL - YYC • 1 stop
Cheapest one-way
$145
Typical prices: $224-$418
Multiple Airlines
Mon 10/5
STL - YYC • 1 stop
Nonstop flights
Not available
There are currently no direct flights between St. Louis and Calgary. You'll need at least 1 connection.
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Top layover airports
Seattle (SEA)
Cheapest • Avg $578 (round-trip)
Denver (DEN)
Shortest trip • 5h 59m (one-way)
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When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 11% compared to booking last minute.
Insights
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When to travel
April
Cheapest • 18% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Calgary!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Calgary that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

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

Mon, Aug 24 - Mon, Aug 31
Multiple Airlines Logo
6:17 pm - 9:50 pm
STL
-
YYC
28h 33m
1 stop
Multiple Airlines Logo
7:00 am - 5:22 pm
YYC
-
STL
9h 22m
1 stop
$309Multiple Airlines
Mon, Oct 5 - Mon, Oct 12
Multiple Airlines Logo
2:29 pm - 9:50 pm
STL
-
YYC
8h 21m
1 stop
Multiple Airlines Logo
12:20 am - 9:40 am
YYC
-
STL
8h 20m
1 stop
$310Multiple Airlines
Mon, Aug 17 - Sat, Aug 22
American Airlines Logo
8:07 pm - 12:57 pm
STL
-
YYC
17h 50m
1 stop
American Airlines Logo
7:00 am - 11:58 pm
YYC
-
STL
15h 58m
1 stop
$372American Airlines
Tue, Aug 18 - Tue, Aug 25
American Airlines Logo
6:00 am - 11:42 pm
STL
-
YYC
18h 42m
1 stop
American Airlines Logo
7:00 am - 12:14 am
YYC
-
STL
16h 14m
1 stop
$372American Airlines
Mon, Oct 5 - Mon, Oct 5
WestJet Logo
6:15 am - 5:00 pm
STL
-
YYC
11h 45m
1 stop
WestJet Logo
9:00 pm - 10:51 am
YYC
-
STL
12h 51m
2 stops
$414WestJet
Tue, Sep 15 - Wed, Sep 23
WestJet Logo
6:00 am - 5:10 pm
STL
-
YYC
12h 10m
1 stop
WestJet Logo
10:15 am - 3:12 pm
YYC
-
STL
27h 57m
1 stop
$416WestJet
Mon, Aug 31 - Wed, Sep 2
United Airlines Logo
8:50 am - 10:37 pm
STL
-
YYC
14h 47m
1 stop
United Airlines Logo
8:30 am - 3:38 pm
YYC
-
STL
6h 08m
1 stop
$471United Airlines
Mon, Aug 31 - Wed, Sep 2
United Airlines Logo
4:40 pm - 9:48 pm
STL
-
YYC
6h 08m
1 stop
United Airlines Logo
8:00 am - 4:34 pm
YYC
-
STL
7h 34m
1 stop
$471United Airlines
Sat, Sep 5 - Wed, Sep 9
Delta Logo
5:34 pm - 10:30 pm
STL
-
YYC
29h 56m
2 stops
Delta Logo
11:05 am - 11:16 pm
YYC
-
STL
11h 11m
2 stops
$648Delta
Sat, Sep 5 - Mon, Sep 7
Delta Logo
11:13 am - 7:40 pm
STL
-
YYC
9h 27m
2 stops
Delta Logo
7:00 am - 4:44 pm
YYC
-
STL
8h 44m
2 stops
$1,025Delta
Booking Insights

KAYAK's insights & trends for St. Louis to Calgary flights

Get data-powered insights and trends into flights from St. Louis to Calgary to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from St. Louis to Calgary?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Calgary departing in August.

Flight prices are below average for this route right now.

Flights to Calgary from St. Louis usually cost between $573 and $755 in August.
The lowest price found in the past 5 days was $309 on Multiple Airlines (Aug 24-Aug 31).

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Calgary, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Calgary is April, where tickets cost $559 (return) on average. On the other hand, the most expensive months are February and June, where the average cost of round-trip tickets is $906 and $727 respectively.

How far in advance should I book a flight from St. Louis to Calgary?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Calgary, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Calgary, you should book around 2 weeks before departure, which saves you about 11% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 18 weeks before departure.

Find deals

Good to know

Low season

February

Cheapest flight

$145
Best time to beat the crowds but there is an average 33% increase in price.
Most popular time to fly with an average 6% 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
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Calgary

  • What is the cheapest flight from St. Louis to Calgary?

    In the last 5 days, the lowest price for a flight from St. Louis to Calgary was $145 for a one-way ticket and $309 for a round-trip.

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

    Yes

  • Which aircraft models fly most regularly from St. Louis to Calgary?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Calgary?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between St. Louis and Calgary, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Calgary, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Calgary are Delta and United Airlines. With an average price for the route of $657 and an overall rating of 7.8, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $712 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Calgary?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Calgary.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Calgary?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Calgary from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Calgary?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Calgary with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and YYC can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Calgary?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Calgary from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from St. Louis to Calgary

Information on your arrival and departure airports

St. Louis (STL)
Calgary (YYC)