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Cheap flights from Calgary to St. Louis from C$ 235

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 12/10. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Calgary to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:20 a.m. - 9:40 a.m.
YYC
-
STL
8h 20m
1 stop
Multiple Airlines Logo
10:35 a.m. - 7:14 p.m.
STL
-
YYC
9h 39m
1 stop
C$ 406Multiple Airlines
Wed, 21 Oct - Sun, 25 Oct
Multiple Airlines Logo
9:00 p.m. - 9:40 a.m.
YYC
-
STL
11h 40m
2 stops
Multiple Airlines Logo
10:35 a.m. - 7:14 p.m.
STL
-
YYC
9h 39m
1 stop
C$ 495Multiple Airlines
Thu, 22 Oct - Sun, 25 Oct
American Airlines Logo
7:00 a.m. - 12:27 a.m.
YYC
-
STL
16h 27m
1 stop
American Airlines Logo
11:01 a.m. - 11:29 p.m.
STL
-
YYC
13h 28m
1 stop
C$ 510American Airlines
Sat, 19 Sep - Thu, 24 Sep
American Airlines Logo
1:51 p.m. - 10:20 a.m.
YYC
-
STL
19h 29m
1 stop
American Airlines Logo
5:00 a.m. - 11:29 p.m.
STL
-
YYC
19h 29m
1 stop
C$ 510American Airlines
Fri, 18 Sep - Thu, 24 Sep
Multiple Airlines Logo
7:25 p.m. - 7:17 p.m.
YYC
-
STL
22h 52m
2 stops
Multiple Airlines Logo
2:29 p.m. - 9:50 p.m.
STL
-
YYC
8h 21m
1 stop
C$ 511Multiple Airlines
Fri, 18 Sep - Fri, 25 Sep
WestJet Logo
9:00 p.m. - 9:54 a.m.
YYC
-
STL
11h 54m
2 stops
WestJet Logo
6:20 a.m. - 7:40 p.m.
STL
-
YYC
14h 20m
2 stops
C$ 520WestJet
Thu, 20 Aug - Tue, 25 Aug
WestJet Logo
12:20 a.m. - 11:46 a.m.
YYC
-
STL
10h 26m
1 stop
WestJet Logo
6:20 a.m. - 8:40 p.m.
STL
-
YYC
15h 20m
2 stops
C$ 530WestJet
Wed, 19 Aug - Tue, 25 Aug
WestJet Logo
11:05 a.m. - 11:16 p.m.
YYC
-
STL
11h 11m
2 stops
WestJet Logo
6:15 a.m. - 8:40 p.m.
STL
-
YYC
15h 25m
2 stops
C$ 531WestJet
Fri, 18 Sep - Thu, 24 Sep
WestJet Logo
7:00 a.m. - 10:31 a.m.
YYC
-
STL
26h 31m
2 stops
WestJet Logo
6:15 a.m. - 4:10 p.m.
STL
-
YYC
10h 55m
2 stops
C$ 531WestJet
Sat, 19 Sep - Thu, 24 Sep
WestJet Logo
12:20 a.m. - 9:34 a.m.
YYC
-
STL
8h 14m
1 stop
WestJet Logo
5:59 p.m. - 8:15 p.m.
STL
-
YYC
27h 16m
1 stop
C$ 531WestJet
Sat, 12 Sep - Fri, 18 Sep

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WestJet flights from Calgary to St. Louis

Our best WestJet deals on Calgary to St. Louis flight tickets
WestJet
20 Aug
YYC9:00 p.m.Calgary
11h 54m
2 stops
STL9:54 a.m.Lambert-St Louis
25 Aug
STL6:20 a.m.Lambert-St Louis
14h 20m
2 stops
YYC7:40 p.m.Calgary
C$ 520
WestJet
19 Aug
YYC12:20 a.m.Calgary
10h 26m
1 stop
STL11:46 a.m.Lambert-St Louis
25 Aug
STL6:20 a.m.Lambert-St Louis
15h 20m
2 stops
YYC8:40 p.m.Calgary
C$ 530
WestJet
18 Sep
YYC11:05 a.m.Calgary
11h 11m
2 stops
STL11:16 p.m.Lambert-St Louis
24 Sep
STL6:15 a.m.Lambert-St Louis
15h 25m
2 stops
YYC8:40 p.m.Calgary
C$ 531

United Airlines flights from Calgary to St. Louis

Our best United Airlines deals on Calgary to St. Louis flight tickets
United Airlines
30 Aug
YYC6:00 a.m.Calgary
16h 31m
1 stop
STL11:31 p.m.Lambert-St Louis
31 Aug
STL4:40 p.m.Lambert-St Louis
6h 08m
1 stop
YYC9:48 p.m.Calgary
C$ 553
United Airlines
30 Aug
YYC6:00 a.m.Calgary
16h 31m
1 stop
STL11:31 p.m.Lambert-St Louis
31 Aug
STL4:40 p.m.Lambert-St Louis
6h 08m
1 stop
YYC9:48 p.m.Calgary
C$ 565
United Airlines
3 Aug
YYC8:30 a.m.Calgary
13h 59m
1 stop
STL11:29 p.m.Lambert-St Louis
4 Aug
STL4:48 p.m.Lambert-St Louis
6h 00m
1 stop
YYC9:48 p.m.Calgary
C$ 754

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 2 August 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

Cheapest round-trip
Quickest round-trip

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 21/10

12:20 a.m.-9:40 a.m.

1 stop8h 20m

Lambert-St Louis

Sun 25/10

10:35 a.m.-7:14 p.m.

1 stop9h 39m

C$ 406

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 22/10

9:00 p.m.-9:40 a.m.

2 stops11h 40m

Lambert-St Louis

Sun 25/10

10:35 a.m.-7:14 p.m.

1 stop9h 39m

C$ 495

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 19/9

7:00 a.m.-12:27 a.m.

1 stop16h 27m

Lambert-St Louis

Thu 24/9

11:01 a.m.-11:29 p.m.

1 stop13h 28m

C$ 510

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 18/9

1:51 p.m.-10:20 a.m.

1 stop19h 29m

Lambert-St Louis

Thu 24/9

5:00 a.m.-11:29 p.m.

1 stop19h 29m

C$ 510

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 18/9

7:25 p.m.-7:17 p.m.

2 stops22h 52m

Lambert-St Louis

Fri 25/9

2:29 p.m.-9:50 p.m.

1 stop8h 21m

C$ 511

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 20/8

9:00 p.m.-9:54 a.m.

2 stops11h 54m

Lambert-St Louis

Tue 25/8

6:20 a.m.-7:40 p.m.

2 stops14h 20m

C$ 520

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 19/8

12:20 a.m.-11:46 a.m.

1 stop10h 26m

Lambert-St Louis

Tue 25/8

6:20 a.m.-8:40 p.m.

2 stops15h 20m

C$ 530

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 18/9

11:05 a.m.-11:16 p.m.

2 stops11h 11m

Lambert-St Louis

Thu 24/9

6:15 a.m.-8:40 p.m.

2 stops15h 25m

C$ 531

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 19/9

7:00 a.m.-10:31 a.m.

2 stops26h 31m

Lambert-St Louis

Thu 24/9

6:15 a.m.-4:10 p.m.

2 stops10h 55m

C$ 531

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 12/9

12:20 a.m.-9:34 a.m.

1 stop8h 14m

Lambert-St Louis

Fri 18/9

5:59 p.m.-8:15 p.m.

1 stop27h 16m

C$ 531

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?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 601 to C$ 708.
The lowest price recently found on this route was C$ 406.

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

The month of May is, on average, the cheapest month to fly to St. Louis from Calgary, with most prices found around C$ 448. If you don’t want to visit St. Louis in May, then you should wait until March to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 551.

Can stopping save me money on Calgary to St. Louis flights?

You could potentially save up to 10% on your flight if you consider stops on a Calgary to St. Louis flight.

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

7h 58m

Direct flights

None
The fastest flight from Calgary to St. Louis takes 7h 58m
There are no direct flights from Calgary to St. Louis. There are no popular flight routes from Calgary to St. Louis.
Search flight deals

Frequently asked questions about flying from Calgary to St. Louis

  • 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 7h 58m.

  • 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
DeltaPriceFrom C$ 350Free CancellationRating
7.8
8,494 reviews
Search Delta flights
WestJetPriceFrom C$ 573Free CancellationRating
7.2
3,423 reviews
Search WestJet flights

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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