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STL - YYC

Find cheap flights from St. Louis to Calgary from $122

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 5/7. 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
0 bags
Fri 5/24
Fri 5/31

Search hundreds of travel sites at once for deals on flights to Calgary

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Calgary, 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 St. Louis to Calgary, as well as popular online travel agencies
In the last 7 days travelers have searched 44,632,927 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

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

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

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

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
7:51 pm - 11:58 amSTL-YYC
17h 07m1 stop
7:30 pm - 10:18 amYYC-STL
13h 48m1 stop
Tue, May 7 - Tue, May 14
10:59 pm - 11:58 amSTL-YYC
13h 59m1 stop
7:30 pm - 3:39 pmYYC-STL
19h 09m2 stops
Tue, May 7 - Tue, May 14
11:36 am - 10:02 pmSTL-YYC
11h 26m1 stop
7:00 am - 5:28 pmYYC-STL
9h 28m2 stops
Wed, Sep 11 - Sun, Sep 15
11:36 am - 10:15 pmSTL-YYC
11h 39m1 stop
7:00 am - 5:37 pmYYC-STL
9h 37m2 stops
Wed, Oct 9 - Sun, Oct 13
4:05 pm - 11:59 pmSTL-YYC
8h 54m1 stop
6:00 am - 3:20 pmYYC-STL
8h 20m1 stop
$429Air Canada
Find Deal
Tue, Sep 10 - Tue, Sep 17
6:11 am - 6:12 pmSTL-YYC
13h 01m2 stops
12:30 am - 11:48 amYYC-STL
10h 18m1 stop
$454WestJet
Find Deal
Wed, May 29 - Tue, Jun 4
11:51 am - 12:40 amSTL-YYC
13h 49m2 stops
9:45 am - 1:08 pmYYC-STL
26h 23m1 stop
$455WestJet
Find Deal
Tue, Aug 20 - Wed, Aug 28
4:05 pm - 9:05 amSTL-YYC
18h 00m1 stop
1:00 am - 3:21 pmYYC-STL
13h 21m1 stop
$475Air Canada
Find Deal
Tue, Aug 20 - Tue, Aug 27
6:37 pm - 11:40 amSTL-YYC
18h 03m1 stop
6:45 am - 10:59 pmYYC-STL
15h 14m1 stop
$503American Airlines
Find Deal
Sun, May 5 - Sun, May 12
1:45 pm - 9:43 pmSTL-YYC
8h 58m1 stop
6:25 am - 10:20 pmYYC-STL
14h 55m1 stop
$712United Airlines
Find Deal
Sat, Jun 29 - Sat, Jul 6

Flights from St. Louis to Calgary - Travel Insights & Trends

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.

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

The average price of all flights from St. Louis to Calgary clicked on KAYAK for each day over the last 12 months.
When flying from St. Louis to Calgary, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to St. Louis, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

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 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 February, where tickets cost $479 on average. On the other hand, the most expensive months are November and December, where the average cost of tickets is $820 and $716 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for 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 month.
To get a below average price on the flight from St. Louis to Calgary, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 90 days before departure.

Which airlines provide the cheapest flights from St. Louis to Calgary?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
The cheapest return flight ticket from St. Louis to Calgary found by KAYAK users in the last 72 hours was for $429 on Air Canada, followed by Delta ($432). One-way flight deals have also been found from as low as $192 on Delta and from $221 on WestJet.

Good to know

Low season

November

High season

July

Cheapest flight

$122
Best time to beat the crowds but there is an average 29% increase in price.
Most popular time to fly with an average 7% 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 3 days, the lowest price for a flight from St. Louis to Calgary was $122 for a one-way ticket and $276 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 oneworld being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from St. Louis to Calgary are Delta and WestJet. With an average price for the route of $583 and an overall rating of 8.0, Delta is the most popular choice. WestJet is also a great choice for the route, with an average price of $609 and an overall rating of 7.5.

  • 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.

See more FAQs

Top 5 airlines serving from St. Louis to Calgary

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Calgary. 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 St. Louis to Calgary? 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.
8.0
DeltaOverall score based on 11004 reviews
7.9comfort
8.0entertainment
7.5food
8.6crew
8.2boarding
Airline reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

2.0 MediocreMarisol, Apr 2024DFW - ATL
Read more about Delta reviews

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive. I also upgraded to comfort + , I didn’t feel it was worth it. There was no benefit

On my way home I had a layover. The flight from ATL to CLT was amended 5x while I was waiting. I could have driven home sooner. Overall from Dallas, Tx to Charlotte, NC I started my trip at 4:30pm, I didn’t get home until past midnight. I know things happen, but 5x to make me run back and forth in an airport from different terminals is excessive.

They did a fine job. Can't wait to use Delta in the future.

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

Seat back monitors and outlets were dead and not working.

Everything was great except for the seat. The backrest would not stay in the upright position.

I usually have a positive experience with Delta. Complimentary upgrades are always nice!

Flight delayed about 2 hrs so it made it a VERY late night

The crew, food, and entertainment were all good. But my screen had some sort of bug where if I turned it off, it would turn back on after 2-5 minutes. At full brightness. It made it very hard to get any shut-eye on the overnight flight. Also, the older Boeing plane, while nicely cared for (and no doors fell off 😅👏) doesn't have the nice air quality of newer planes. So I felt a bit greasy by the time we landed in Sweden.

For some reason there was a change in the cockpit which delayed us by an hour

flight changed by airline. then could not check imto mew flight because kiwi had messed up the reservation. still waiting to depart…

Good. Really crowded and busy. Going to Winnipeg plane was crowded and seats very narrow Now I remember why I dislike flying 😈

Having a lot of delayed flights on West Jet, however things always work out. So no complaints.

Check in was seamless , crew very polite , arrived on time!

Nothing special. Unacceptable wait for baggage on arriving in Calgary

Seats can use more cushioning, it felt very hard. The snack option could be better

Over all good. I had some issues with trying to buy my seat. The Westjet system kept trying to charge my credit card, without getting the seat. In the end after 5 times being charged, I got my seat.

I did not have a meal or entertainment, but flight was comfortable, beverage service was quick, crew was very helpful and pleasant. And a very smooth flight overall.

WestJet does make an effort to make the flying experience enjoyable. While I could have saved some money by choosing a different airline; I was able to fly directly, and with minimal hold-over. The extra $150 was well worth it

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

Aircraft has better leg room than any of United's larger planes. We had requested mobility assistance for this and related flights. United's response to all was superb.

No snacks served! Seating in the kast row in uncomfortable.

Flight was fine, it was delayed but only 30 minutes, staff were efficient, lady making announcements at LAX was really hard to understand but the rest were great.

Entertainment was okay not because anything was wrong but it is a short flight so having no wifi is annoying but understandable. Crew was outstanding as usual

It was spectacular. I had basic Economy and was given so much space and their seats lean back so far. Staff was superb, food was superb, everything was superb, Finnair is Fantastic.

Those seats were way too narrow. I had the middle seat, one person was a very skinny person and we still couldn’t avoid touching each other anytime one of us moved. The other person was larger and we were basically sitting in each others lap the entire flight. There was zero entertainment. The flight was long enough to justify tvs, but no. Gotta sit there in your infant seat and twiddle your thumbs.

The Flight attendant had an attitude and didn't allow anyone any time to prepare for landing despite being absent throughout the entire trip

Flight boarded without pilots. Sat on plane for 3 hrs. after over an hour late boarding. Plane never took off. Had to deplane near midnight. Line for rebooking was 3 hours + long. I had to leave.

The flight was great but board was a nightmare. The gate was changed 4 times during the layover period

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Cold air blew constantly on my legs almost making me numb.

Ac was broken so we deplaned, waited 2 hours, taxiing for takeoff they said the plane would not fly so we went back to the gate and got a new plane which took another hour. In all a 4 hour delay for an 80 min flight.

Missed the flight because of them and up geting a rental car

Cabin crew were great. Seats are criminal for tall people

Flight was delayed 1.5 hrs due to problem with a previous flight to mine; I was informed appropriately via Text & Email, however, website did not keep up with messages sent by nearly an hour. When checking-in warm & friendly reception at check-in desk until female Air Canada Rep noticed my flight number and instantly pivoted to a condescending & sarcastic comments about getting my bag checked in since I’m running so late; then tone instantly changed again few minutes later when she muttered, “Oh, they’ve delayed it” another sign systems & worse front line staff, not fully informed or simply not reading their flight status updates. Flight crew were very friendly & did a great job trying to make up lost time due to the delay.

It was great, love the experience and will definitely recommend 👌. Communication was great

My flight was great! Gate attendants and crew were great… pleasant and in good spirits. Flight delayed several hours and we were well informed of the status while on plane. Thank you!

The fact that I got to Toronto alive and well and safe is a huge plus. I thank the captain and crew for a safe flight The comfort of the aircraft leaves much to be desired. Human beings should not have to be that cramped and squashed on a flight that we pay a lot for and even have to pay for lousy food choices The cabin crew were pleasant and helpful Kudos to them as the flight was packed to capacity and there was a lot of work for them in a short space of time All in all a good experience, but too cramped

Fresh fuit or veg snacks would be so great, but there are two good restaurants in Denver airport. Try Etais UDIS or Freshens DIA for nutritious delicious pita sandwiches/ donairs and crepes in Freshens.

Glad to see the staff of Air Canada take preference in protecting their customers from unruly passengers before they board. Well done

I appreciate the fact that the flight took off and landed on time What I didn’t like they never offer a snack eg nuts/cookies/chips

This website did not advise the prices were in $USD, when the flyer (me) was flying within Canada only and only a Canadian resident, and booking this flight in Canada. Furthermore, the area to board the plane was unusually hot and sweaty.

Flights on time. Friendly/pleasant ground and in-flight staff. Better snacks and films with captions,

Book cheap flights from St. Louis to Calgary

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Calgary found on KAYAK in the last 72 hours.
5/7Tue
2 stops
20h 08mSTL-YYC
$122
7/10Wed
1 stop
11h 26mSTL-YYC
$182
7/23Tue
1 stop
17h 27mSTL-YYC
$186
7/16Tue
1 stopDelta
9h 33mSTL-YYC
$192
6/15Sat
2 stopsWestJet
26h 52mSTL-YYC
$221
9/2Mon
1 stopDelta
9h 56mSTL-YYC
$224
7/10Wed
2 stopsDelta
13h 02mSTL-YYC
$229
5/7Tue
3 stops
24h 58mSTL-YYC
$231
7/16Tue
2 stopsWestJet
17h 44mSTL-YYC
$256
9/2Mon
2 stopsDelta
13h 07mSTL-YYC
$315

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St. Louis - Calgary Flights

Departure:

St. Louis (STL)United States

Destination:

Calgary (YYC)Canada

Return flight deals:

Calgary - St. Louis

Cabin classes:

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