YYC - STL

C$ 218 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 31/1. 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
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

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

Everything you should know

Cheapest round-trip
C$ 454
Typical prices: C$ 354-C$ 537
Multiple Airlines
Thu 8/1Sun 11/1
YYC - STL • 2 stops
Cheapest one-way flights
C$ 218
Typical prices: C$ 308-C$ 346
Multiple Airlines
Sat 31/1
YYC - STL • 2 stops
When to travel
January
Cheapest • 34% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches hundreds 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

Thu, 8 Jan - Sun, 11 Jan
Multiple Airlines Logo
10:00 a.m. - 12:12 p.m.
YYC
-
STL
25h 12m2 stops
Multiple Airlines Logo
9:46 p.m. - 12:01 p.m.
STL
-
YYC
15h 15m1 stop
C$ 454Multiple Airlines
Sat, 7 Feb - Wed, 11 Feb
Multiple Airlines Logo
12:30 a.m. - 6:51 a.m.
YYC
-
STL
29h 21m1 stop
Multiple Airlines Logo
4:51 p.m. - 11:10 a.m.
STL
-
YYC
19h 19m2 stops
C$ 472Multiple Airlines
Sat, 7 Feb - Wed, 11 Feb
Multiple Airlines Logo
12:30 a.m. - 6:51 a.m.
YYC
-
STL
29h 21m1 stop
Multiple Airlines Logo
8:17 p.m. - 7:09 p.m.
STL
-
YYC
23h 52m1 stop
C$ 478Multiple Airlines
Thu, 8 Jan - Sun, 11 Jan
Multiple Airlines Logo
7:35 p.m. - 12:12 p.m.
YYC
-
STL
15h 37m1 stop
Multiple Airlines Logo
9:46 p.m. - 12:01 p.m.
STL
-
YYC
15h 15m1 stop
C$ 498Multiple Airlines
Thu, 22 Jan - Mon, 26 Jan
Delta Logo
6:30 a.m. - 4:45 p.m.
YYC
-
STL
9h 15m1 stop
Delta Logo
5:25 p.m. - 8:54 p.m.
STL
-
YYC
28h 29m1 stop
C$ 536Delta
Thu, 22 Jan - Mon, 26 Jan
United Airlines Logo
2:13 p.m. - 8:58 p.m.
YYC
-
STL
5h 45m1 stop
United Airlines Logo
6:40 p.m. - 1:08 p.m.
STL
-
YYC
19h 28m2 stops
C$ 602United Airlines
Thu, 1 Jan - Sat, 24 Jan
Multiple Airlines Logo
7:35 p.m. - 9:45 a.m.
YYC
-
STL
13h 10m2 stops
Multiple Airlines Logo
8:22 p.m. - 11:44 a.m.
STL
-
YYC
16h 22m1 stop
C$ 644Multiple Airlines
Sun, 8 Feb - Wed, 11 Feb
Delta Logo
1:25 p.m. - 11:25 p.m.
YYC
-
STL
9h 00m2 stops
Delta Logo
6:40 a.m. - 5:50 p.m.
STL
-
YYC
12h 10m2 stops
C$ 651Delta
Thu, 22 Jan - Mon, 26 Jan
Air Canada Logo
6:15 a.m. - 4:55 p.m.
YYC
-
STL
9h 40m1 stop
Air Canada Logo
9:57 a.m. - 8:59 p.m.
STL
-
YYC
12h 02m2 stops
C$ 683Air Canada
Thu, 8 Jan - Sun, 11 Jan
American Airlines Logo
7:00 a.m. - 8:32 p.m.
YYC
-
STL
12h 32m2 stops
American Airlines Logo
6:00 a.m. - 3:32 p.m.
STL
-
YYC
10h 32m2 stops
C$ 720American 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 January.

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

The average price of all round-trip flights from Calgary to St. Louis clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Calgary to St. Louis, look for departures on Sundays and avoid leaving on a Friday, as it's usually the priciest day. When flying back from St. Louis, Thursday is the cheapest day to fly and Monday is the most expensive.

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 January, where tickets cost C$ 419 (return) on average. On the other hand, the most expensive months are November and May, where the average cost of round-trip tickets is C$ 781 and C$ 703 respectively.

Good to know

Low seasonOctober
Cheapest flightC$ 218
Most popular time to fly (2% more expensive 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 C$ 218 for a one-way ticket and C$ 454 for a round-trip.

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

    Calgary airport is called Calgary and the only airport in St. Louis is 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.

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

    The two airlines most popular with KAYAK users for flights from Calgary to St. Louis are United Airlines and WestJet. With an average price for the route of C$ 647 and an overall rating of 7.4, United Airlines is the most popular choice. WestJet is also a great choice for the route, with an average price of C$ 664 and an overall rating of 7.2.

  • 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.

  • 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 3 airlines 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 9094 reviews
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

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

8.0 ExcellentAnonymous, Dec 2025
YEG - IAH
Read more United Airlines reviews

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

We Left Calgary 1/2 hour late and that made for a tight connection in Denver. After arriving everything was done to help us make our connection. That was a great effort. Thank You United

Efficient all round, very good crew. Short flight so the food, of course, was just snacks

Overall, it was good. I was seating next to a wonderful lady and did not notice how time flew. Thanks

My flight was delayed about 1 1/2 hours in Chicago, but other then that it was a good flight.

Not sure what happened, but for some reason we had to sit on the plane for an extra 10 minutes once we arrived in Abbotsford. Obviously, it was an engine issue.

It was disappointing to see the huge number of people who were allowed to board who were claiming to either be disabled or needed extra time to board who practically ran to the gate as soon as boarding opened. One of the female flight attendants in the premium economy section refused to let a lady with an infant use the toilet next to row 9 to change her baby even though the path back to the rear toilets was blocked by staff and trolleys and said she would have to carry the baby to the toilet during the descent phase when turbulence was present. The passenger refused and the baby had to wait until landing. It would have been no problem to allow this infringement of weathers petty rules. The flight was also very cold due to a cold draft throughout the flight from the bulkhead ceiling which was not controllable.

Food good . No entertainment. Need to use wifi to access your own apps. Eg Amazon Prime, YouTube. They don't tell you unless you ask.

I was seated near a "stinky" person. That's not the fault of Westjet🙁😶‍🌫️

The ceiling leaked water on me. The toilets smelled very bad in the rear cabin

When I purchased the flights I included the luggage, the luggage was not added and got charged the full price anyway. Had to pay for the luggage at check in. Initial flight was delayed, we missed our 9am connection (flew with my wife), then the airline rebooks us to the next flights, putting my wife in at 1.40pm and me at 4pm, what a crazy wait time. We managed to fix it with customer service and they put me in the 1:40pm flight too, but they left my baggage behind in the 4pm flight. When arrived to my destination, of course no luggage. It was delivered to the address thankfully late at night. The experience sucked.

Very good experience. Great cabin crew. Much better than expected

Typical Canadian airline experience. Charger and tray were broken, food was poor quality, and yet you're still paying more than flights with equal to better service than elsewhere globally.

Not enough food option. And not enough advices or information about what we are gonna eat.

my carry-on bag was delayed and I did not receive it until the day of my return at the airport. This delay caused me significant inconvenience, as I did not have access to my personal belongings for the duration of my trip. I had expected to rely on my carry-on items, and being without them negatively impacted my travel experience.

Was not sent a link to check in online. Tried to check in online using website. Site didn’t work. Called support line, was told it often didn’t work. Went to counter at airport to check bags and get boarding passes. Had to stand in a lineup. They were unable to tell me how much to pay. Had to take a paper to another counter, took a long time to be told what I owed. I fondly remember the days of checking in online, getting my boarding pass digitally, paying for my luggage on line, scanning my passport at the airport to get my luggage tags, and putting my luggage on the conveyor. Easy peasy. Air Canada has really taken a step back in time, and made what was an easy check in experience to one that seemed unduly long and frustrating.

Really out of Air Canada's control due to long delay because of mechanical issues. While doing their best, disappointed by their assumption that all passengers have smart phones. Should have communicated food voucher availability at gate area. Late arrival cost me an extra $51 because public transit was not available, Otherwise, feel Air Canada did their best dealing with their challenges. Will likely continue using them in the future.

They canceled my flight, I had to rent a car, drive 14 hours. They tell to go on line for a refund, but only offer $24 for a $210 flight and you can’t get hold of anybody by phone and no help from staff at the airport.

I wish to travel with Air Canada for my next trip

They were very attentive, polite, professional and great customer service skills.

Business class was not worth the extra charge. Overpriced for slightly larger seat. Nothing special. Small older plane.

Pros: The airplane was new and had in-flight entertainment (tablet behind seats) with new movies instead of watching on personal devices. Cons: the flight time was changed without informing us. When I booked the flight, the time was 13:30pm (also in the email confirmation). However, when I reached the airport, the time was conveniently changed to 14:55pm. When I asked at the counter, they said the flight always took off at this time. The booking was made by Air Canada, but the flight was operated by United.

The app was great, service was wonderful, everything was quick and easy

On the flight from Montreal to Calgary the flight attendant we had was excellent. Unfortunately I did not get her name but she made the flight very comfortable and enjoyable.

Like- beer/wine for free Dis-like- all other aspects- customer service was horrible the entire trip. No help from Air Canada after they changed flight 6+ hours later. Also they put us on standby for no reason. Then almost 2 hours to get our bags after we arrived back at airport

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

Information on your arrival and departure airports