Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from St. Louis to Calgary from C$ 254

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Calgary departing on 23/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Early arrival? Instantly customize your results

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.

Find the cheapest flights from St. Louis to Calgary

Cheap round-trip flights

These are some of the best round-trip flight deals from St. Louis to Calgary that have been recently found on momondo from popular airlines, departing in the coming months.
 Logo
9:50 a.m. - 8:07 p.m.STL-YYC
11h 17m2 stops
 Logo
9:15 a.m. - 5:04 p.m.YYC-STL
6h 49m1 stop
C$ 544
Find Deal
Thu, 5 Jun - Thu, 12 Jun
 Logo
7:29 p.m. - 2:46 p.m.STL-YYC
20h 17m1 stop
 Logo
12:10 p.m. - 8:47 p.m.YYC-STL
7h 37m1 stop
C$ 551
Find Deal
Sat, 9 Aug - Sat, 16 Aug
Air Canada Logo
1:30 p.m. - 11:03 p.m.STL-YYC
10h 33m1 stop
Air Canada Logo
6:15 a.m. - 8:48 p.m.YYC-STL
13h 33m1 stop
C$ 605Air Canada
Find Deal
Sat, 21 Jun - Tue, 24 Jun
United Airlines Logo
8:10 a.m. - 10:53 p.m.STL-YYC
15h 43m1 stop
United Airlines Logo
6:15 a.m. - 4:31 p.m.YYC-STL
9h 16m1 stop
C$ 611United Airlines
Find Deal
Sun, 15 Jun - Wed, 25 Jun
Air Canada Logo
1:30 p.m. - 10:38 p.m.STL-YYC
10h 08m2 stops
Air Canada Logo
1:30 p.m. - 8:48 p.m.YYC-STL
6h 18m1 stop
C$ 612Air Canada
Find Deal
Tue, 17 Jun - Tue, 24 Jun
Alaska Airlines Logo
6:30 a.m. - 5:29 p.m.STL-YYC
11h 59m1 stop
Alaska Airlines Logo
11:17 a.m. - 12:04 a.m.YYC-STL
11h 47m1 stop
C$ 625Alaska Airlines
Find Deal
Sun, 11 May - Wed, 21 May
Delta Logo
11:32 a.m. - 11:01 p.m.STL-YYC
12h 29m2 stops
Delta Logo
6:30 a.m. - 8:39 p.m.YYC-STL
13h 09m2 stops
C$ 632Delta
Find Deal
Tue, 27 May - Tue, 3 Jun
Delta Logo
12:10 p.m. - 11:03 p.m.STL-YYC
11h 53m2 stops
Delta Logo
7:15 a.m. - 8:35 p.m.YYC-STL
12h 20m2 stops
C$ 683Delta
Find Deal
Thu, 4 Sep - Sat, 13 Sep
United Airlines Logo
6:00 a.m. - 12:53 p.m.STL-YYC
7h 53m1 stop
United Airlines Logo
1:30 p.m. - 10:45 a.m.YYC-STL
20h 15m2 stops
C$ 777United Airlines
Find Deal
Sun, 18 May - Sun, 25 May
Alaska Airlines Logo
8:09 a.m. - 10:27 a.m.STL-YYC
27h 18m2 stops
Alaska Airlines Logo
6:22 p.m. - 9:49 a.m.YYC-STL
14h 27m2 stops
C$ 781Alaska Airlines
Find Deal
Wed, 14 May - Mon, 19 May

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
6 Jul
STL5:30 a.m.Lambert-St Louis
17h 27m
1 stop
YYC9:57 p.m.Calgary
11 Jul
YYC6:29 a.m.Calgary
16h 22m
1 stop
STL11:51 p.m.Lambert-St Louis
American Airlines
3 Jul
STL6:00 a.m.Lambert-St Louis
18h 29m
1 stop
YYC11:29 p.m.Calgary
6 Jul
YYC4:15 p.m.Calgary
16h 03m
1 stop
STL9:18 a.m.Lambert-St Louis

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
4 Jun
STL6:00 a.m.Lambert-St Louis
11h 48m
1 stop
YYC4:48 p.m.Calgary
7 Jun
YYC12:30 a.m.Calgary
8h 13m
1 stop
STL9:43 a.m.Lambert-St Louis
WestJet
2 Jun
STL6:45 a.m.Lambert-St Louis
12h 43m
1 stop
YYC6:28 p.m.Calgary
8 Jun
YYC7:00 a.m.Calgary
13h 34m
2 stops
STL9:34 p.m.Lambert-St Louis
WestJet
15 Jun
STL6:30 a.m.Lambert-St Louis
9h 35m
2 stops
YYC3:05 p.m.Calgary
24 Jun
YYC12:30 a.m.Calgary
8h 13m
1 stop
STL9:43 a.m.Lambert-St Louis

See travel insights to Calgary from

How to get the cheapest flight ticket from St. Louis to Calgary

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between St. Louis and Calgary?

What is the cheapest month to fly to Calgary?

The cheapest month to fly to Calgary from St. Louis is in January. Flight prices, which tend to average around C$ 499, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Calgary from St. Louis during October instead. Flights to Calgary in October, while not as cheap as those in January, still average around C$ 698.

What is the cheapest day to depart on your flight to Calgary?

The cheapest day to depart on your flight to Calgary is on a Thursday when prices can be found for as low as C$ 299. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from St. Louis because it is more convenient for both business and leisure travellers. As a result, prices tend to be around C$ 965.

What is the cheapest time of day to depart on your flight to Calgary?

Our data shows that the cheapest St. Louis to Calgary flights are usually those with departure times at noon. Our users have found flights to Calgary at noon for as low as C$ 491. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are C$ 800 on average. Flights to Calgary from St. Louis in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to Calgary?

You are more likely to see cheaper flights to Calgary from St. Louis when booking 5 weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around C$ 788 when searching 5 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from St. Louis for as low as C$ 551 on momondo.

How have St. Louis to Calgary flight prices changed over time?

As of April 2025, prices for St. Louis to Calgary flights are approximately 183% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Calgary

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Calgary according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Calgary (STL to YYC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Calgary

Best price found

C$ 254

Fastest flight time

6h 03m

Direct flights

None

Airports in Calgary

1 airport
The best one-way flight to Calgary from St. Louis in the past 72 hours is C$ 254. The best round-trip flight deal from St. Louis to Calgary found on momondo in the last 72 hours is C$ 544.
The fastest flight from St. Louis to Calgary takes 6h 03m
There are no direct flights from St. Louis to Calgary. Popular non-direct route for this connection is Lambert-St Louis Airport - Calgary Airport.
There is 1 airport near Calgary: Calgary (YYC)

  • How far is Lambert-St Louis to Calgary by plane?

    There are 2315.6 km between Lambert-St Louis and Calgary. In terms of flight time, this usually takes a little over 6h 03m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Calgary Airport?

    Prices for flights from Lambert-St Louis Airport to Calgary Airport are updated daily.

  • How old do you have to be to fly from Lambert-St Louis Airport to Calgary Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to Calgary Airport.

  • What documentation or ID do you need to fly to Calgary Airport?

    The necessary travel and health documents for your Calgary Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.


Travelling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Banff
Canmore
Lake Louise
Drumheller
Radium Hot Springs
Airdrie
Kananaskis

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Calgary?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Calgary . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from St. Louis to Calgary with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Calgary flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Calgary?

momondo provides multiple filters to help you find the best flight to Calgary from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Calgary right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Calgary, momondo offers a useful price alert feature which will track prices for flights to Calgary from St. Louis and alert you when they change.


An easier way to manage your Calgary trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Mon 5/5
Mon 12/5

Find better results for your trip to Canada