YYC - STL

$244 Find Cheap Flights from Calgary to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Calgary to St. Louis departing on 3/13. 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

KAYAK searches hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Calgary to St. Louis, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Calgary to St. Louis, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

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Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$350
Typical prices: $328-$500
Multiple Airlines
Vi 2/27Mi 3/4
YYC - STL • 1 stop
Cheapest one-way
$244
Typical prices: $207-$208
Air Canada
Vi 3/13
YYC - STL • 1 stop
Top airlines
American Airlines
Cheapest • from $387 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
February
Cheapest • 13% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Calgary to St. Louis 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 Calgary to St. Louis

Vi, feb 27 - Mi, mar 4
Multiple Airlines Logo
7:35 pm - 5:46 pm
YYC
-
STL
21h 11m
1 stop
Multiple Airlines Logo
5:18 pm - 3:09 pm
STL
-
YYC
22h 51m
2 stops
$350Multiple Airlines
Jo, feb 26 - Mi, mar 4
Multiple Airlines Logo
3:35 pm - 8:07 pm
YYC
-
STL
27h 32m
1 stop
Multiple Airlines Logo
5:18 pm - 3:09 pm
STL
-
YYC
22h 51m
2 stops
$375Multiple Airlines
Mi, feb 25 - Mi, mar 4
Multiple Airlines Logo
7:35 pm - 9:26 pm
YYC
-
STL
24h 51m
1 stop
Multiple Airlines Logo
5:18 pm - 3:09 pm
STL
-
YYC
22h 51m
2 stops
$378Multiple Airlines
Sâ, mai 16 - Sâ, mai 23
American Airlines Logo
1:35 pm - 11:48 pm
YYC
-
STL
9h 13m
1 stop
American Airlines Logo
9:17 am - 11:42 pm
STL
-
YYC
15h 25m
1 stop
$387American Airlines
Ma, feb 24 - Mi, mar 4
Multiple Airlines Logo
8:55 am - 6:51 am
YYC
-
STL
20h 56m
1 stop
Multiple Airlines Logo
5:18 pm - 3:09 pm
STL
-
YYC
22h 51m
2 stops
$390Multiple Airlines
Du, feb 22 - Mi, mar 4
Multiple Airlines Logo
7:35 pm - 8:02 pm
YYC
-
STL
23h 27m
1 stop
Multiple Airlines Logo
5:18 pm - 3:09 pm
STL
-
YYC
22h 51m
2 stops
$398Multiple Airlines
Jo, feb 26 - Du, mar 1
Multiple Airlines Logo
9:50 am - 6:51 am
YYC
-
STL
20h 01m
2 stops
Multiple Airlines Logo
10:11 pm - 12:02 pm
STL
-
YYC
14h 51m
1 stop
$399Multiple Airlines
Mi, apr 1 - Ma, apr 7
Multiple Airlines Logo
7:45 am - 10:30 am
YYC
-
STL
25h 45m
2 stops
Multiple Airlines Logo
7:00 am - 5:50 pm
STL
-
YYC
11h 50m
1 stop
$401Multiple Airlines
Mi, apr 1 - Ma, apr 7
American Airlines Logo
1:30 pm - 11:44 pm
YYC
-
STL
9h 14m
1 stop
American Airlines Logo
6:00 am - 12:54 pm
STL
-
YYC
7h 54m
1 stop
$413American Airlines
Vi, feb 27 - Mi, mar 4
Multiple Airlines Logo
7:35 pm - 5:46 pm
YYC
-
STL
21h 11m
1 stop
Multiple Airlines Logo
8:17 pm - 7:09 pm
STL
-
YYC
23h 52m
1 stop
$414Multiple Airlines
Booking Insights

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

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

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

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Calgary to St. Louis, 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 Calgary to St. Louis is February, where tickets cost $413 (return) on average. On the other hand, the most expensive months are November and January, where the average cost of round-trip tickets is $567 and $528 respectively.

Find deals

Good to know

Low seasonOctober
Cheapest flight$244
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight 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
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 Calgary to St. Louis

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

    In the last 3 days, the lowest price for a flight from Calgary to St. Louis was $244 for a one-way ticket and $350 for a round-trip.

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

    Yes, you’ll need a passport to travel to St. Louis from Calgary.

  • Which airports will I be using when flying from Calgary to St. Louis?

    When flying out of Calgary you will be using Calgary. You will be landing at St. Louis, also known as Lambert-St Louis.

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

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

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

    Star Alliance is the only airline alliance operating flights between Calgary and St. Louis.

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

    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 Calgary to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Calgary 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 Calgary to St. Louis?

    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 St. Louis with an airline and back to Calgary with another airline. Booking your flights between Calgary and STL 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 Calgary to St. Louis?

    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 St. Louis from Calgary up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Calgary to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Calgary to St. Louis. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Calgary to St. Louis? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9209 reviews
8.1Crew
6.6Food
7.7Boarding
7.1Entertainment
7.3Comfort
Airline reviews

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

10.0 ExcellentAnonymous, Jan 2026
YOW - IAD
Read more United Airlines reviews

It was great. There were some issues prior to takeoff. The weather was poor so we had to go through deicing, and we were delayed a bit by the pilots' concern about one of the engines, but that's aviation. The pilots handled everything with aplomb, and kept us apprised

Reliable, nice crew, I fly often on that flight and I like it all.

l really enjoy very much the flight was very pleasant

Essy to get on. The hostess gave very little pop, the plane was late getting in, and we are still waiting for our bags. This sucks. :/

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Quick and seamless boarding. No entertainment but fast Starlink wifi for this short trip and the staff was really friendly.

I dread trans-Pacific flights. They are very long. This was my first time on Universal, and it was my best crossing ever. The staff were professional, the hospitality was great, and the food was delicious. The entertainment system filled the long flight hours. I will seek out Universal flights from now onwards. 🙂

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

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

Information on your arrival and departure airports

Calgary (YYC)
St. Louis (STL)