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Cheap flights from Calgary to St. Louis from C$ 259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Calgary to St. Louis departing on 24/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Calgary to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:00 a.m. - 4:45 p.m.
YYC
-
STL
8h 45m
2 stops
Delta Logo
11:23 a.m. - 7:12 p.m.
STL
-
YYC
8h 49m
2 stops
C$ 658Delta
Wed, 18 Feb - Tue, 24 Feb
United Airlines Logo
6:15 a.m. - 8:26 p.m.
YYC
-
STL
13h 11m
1 stop
United Airlines Logo
6:25 a.m. - 11:31 a.m.
STL
-
YYC
6h 06m
1 stop
C$ 664United Airlines
Wed, 18 Feb - Tue, 24 Feb
Multiple Airlines Logo
7:00 p.m. - 6:51 a.m.
YYC
-
STL
34h 51m
2 stops
Multiple Airlines Logo
7:00 a.m. - 5:50 p.m.
STL
-
YYC
11h 50m
1 stop
C$ 709Multiple Airlines
Wed, 25 Feb - Thu, 5 Mar
Air Canada Logo
5:35 a.m. - 3:29 p.m.
YYC
-
STL
8h 54m
1 stop
Air Canada Logo
4:05 p.m. - 1:14 a.m.
STL
-
YYC
10h 09m
1 stop
C$ 713Air Canada
Tue, 24 Mar - Sat, 28 Mar
Multiple Airlines Logo
7:00 a.m. - 11:19 a.m.
YYC
-
STL
51h 19m
2 stops
Multiple Airlines Logo
11:21 a.m. - 7:09 p.m.
STL
-
YYC
8h 48m
1 stop
C$ 731Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar
Delta Logo
6:35 a.m. - 4:45 p.m.
YYC
-
STL
9h 10m
1 stop
Delta Logo
12:10 p.m. - 11:06 p.m.
STL
-
YYC
11h 56m
2 stops
C$ 738Delta
Tue, 28 Jul - Sat, 1 Aug
WestJet Logo
7:30 a.m. - 11:38 p.m.
YYC
-
STL
15h 08m
2 stops
WestJet Logo
6:30 a.m. - 6:40 p.m.
STL
-
YYC
13h 10m
2 stops
C$ 747WestJet
Tue, 28 Jul - Sat, 1 Aug
Air Canada Logo
11:55 p.m. - 2:02 p.m.
YYC
-
STL
13h 07m
1 stop
Air Canada Logo
2:40 p.m. - 11:00 p.m.
STL
-
YYC
9h 20m
1 stop
C$ 794Air Canada
Mon, 13 Jul - Fri, 24 Jul
Delta Logo
9:15 a.m. - 11:38 p.m.
YYC
-
STL
13h 23m
2 stops
Delta Logo
12:10 p.m. - 11:06 p.m.
STL
-
YYC
11h 56m
2 stops
C$ 811Delta
Mon, 13 Jul - Fri, 24 Jul
Multiple Airlines Logo
8:55 a.m. - 1:34 p.m.
YYC
-
STL
27h 39m
1 stop
Multiple Airlines Logo
11:21 a.m. - 7:09 p.m.
STL
-
YYC
8h 48m
1 stop
C$ 835Multiple Airlines
Sun, 22 Mar - Sun, 29 Mar

Delta flights from Calgary to St. Louis

Our best Delta deals on Calgary to St. Louis flight tickets
Delta
18 Feb
YYC7:00 a.m.Calgary
8h 45m
2 stops
STL4:45 p.m.Lambert-St Louis
24 Feb
STL11:23 a.m.Lambert-St Louis
8h 49m
2 stops
YYC7:12 p.m.Calgary
C$ 658
Delta
28 Jul
YYC6:35 a.m.Calgary
9h 10m
1 stop
STL4:45 p.m.Lambert-St Louis
1 Aug
STL12:10 p.m.Lambert-St Louis
11h 56m
2 stops
YYC11:06 p.m.Calgary
C$ 738
Delta
13 Jul
YYC9:15 a.m.Calgary
10h 16m
1 stop
STL8:31 p.m.Lambert-St Louis
24 Jul
STL12:10 p.m.Lambert-St Louis
11h 56m
2 stops
YYC11:06 p.m.Calgary
C$ 811

Air Canada flights from Calgary to St. Louis

Our best Air Canada deals on Calgary to St. Louis flight tickets
Air Canada
24 Mar
YYC5:35 a.m.Calgary
8h 54m
1 stop
STL3:29 p.m.Lambert-St Louis
28 Mar
STL4:05 p.m.Lambert-St Louis
10h 09m
1 stop
YYC1:14 a.m.Calgary
C$ 713
Air Canada
13 Jul
YYC11:55 p.m.Calgary
13h 07m
1 stop
STL2:02 p.m.Lambert-St Louis
24 Jul
STL2:40 p.m.Lambert-St Louis
9h 20m
1 stop
YYC11:00 p.m.Calgary
C$ 794
Air Canada
7 Feb
YYC6:15 a.m.Calgary
13h 43m
1 stop
STL8:58 p.m.Lambert-St Louis
8 Feb
STL8:45 a.m.Lambert-St Louis
6h 36m
1 stop
YYC2:21 p.m.Calgary
C$ 902

momondo Fare Finder

 
Customize your flight search to find flights from Calgary to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 5 February 2026.
Use the filters below to find and compare flights from Calgary to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 18/2

7:00 a.m.-4:45 p.m.

2 stops8h 45m

Lambert-St Louis

Tue 24/2

11:23 a.m.-7:12 p.m.

2 stops8h 49m

C$ 658

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 18/2

6:15 a.m.-8:26 p.m.

1 stop13h 11m

Lambert-St Louis

Tue 24/2

6:25 a.m.-11:31 a.m.

1 stop6h 06m

C$ 664

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 25/2

7:00 p.m.-6:51 a.m.

2 stops34h 51m

Lambert-St Louis

Thu 5/3

7:00 a.m.-5:50 p.m.

1 stop11h 50m

C$ 709

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 24/3

5:35 a.m.-3:29 p.m.

1 stop8h 54m

Lambert-St Louis

Sat 28/3

4:05 p.m.-1:14 a.m.

1 stop10h 09m

C$ 713

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 22/3

7:00 a.m.-11:19 a.m.

2 stops51h 19m

Lambert-St Louis

Sun 29/3

11:21 a.m.-7:09 p.m.

1 stop8h 48m

C$ 731

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 28/7

6:35 a.m.-4:45 p.m.

1 stop9h 10m

Lambert-St Louis

Sat 1/8

12:10 p.m.-11:06 p.m.

2 stops11h 56m

C$ 738

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 28/7

7:30 a.m.-11:38 p.m.

2 stops15h 08m

Lambert-St Louis

Sat 1/8

6:30 a.m.-6:40 p.m.

2 stops13h 10m

C$ 747

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 13/7

11:55 p.m.-2:02 p.m.

1 stop13h 07m

Lambert-St Louis

Fri 24/7

2:40 p.m.-11:00 p.m.

1 stop9h 20m

C$ 794

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 13/7

9:15 a.m.-11:38 p.m.

2 stops13h 23m

Lambert-St Louis

Fri 24/7

12:10 p.m.-11:06 p.m.

2 stops11h 56m

C$ 811

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 22/3

8:55 a.m.-1:34 p.m.

1 stop27h 39m

Lambert-St Louis

Sun 29/3

11:21 a.m.-7:09 p.m.

1 stop8h 48m

C$ 835

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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 Calgary and St. Louis?

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

The month of February is, on average, the cheapest month to fly to St. Louis from Calgary, with most prices found around C$ 565. If you don’t want to visit St. Louis in February, then you should wait until July to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 569.

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

When to book flights from Calgary to St. Louis

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

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

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

Fastest flight time

9h 10m

Direct flights

None
The fastest flight from Calgary to St. Louis takes 9h 10m
There are no direct flights from Calgary to St. Louis. There are no popular flight routes from Calgary to St. Louis.
Search flight deals

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

    The straight-line distance from Calgary to Lambert-St Louis is 2315.6 km. In terms of flight time, this usually takes a little over 9h 10m.

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

    Prices for flights from Calgary Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Calgary Airport to Lambert-St Louis Airport?

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

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular airline from Calgary to St. Louis?

Best airlines flying from Calgary to St. Louis

Compare and see reviews for airlines that fly from Calgary to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 358Free CancellationRating
7.1
10,694 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 440Free CancellationRating
7.4
9,240 reviews
Search United Airlines flights
WestJetPriceFrom C$ 564Free CancellationRating
7.2
3,255 reviews
Search WestJet flights

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
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Why use momondo?

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

It is quick and easy to find Calgary to St. Louis flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to St. Louis that suits you.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to St. Louis from Calgary.

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

Yes. momondo can track prices for Calgary to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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