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Cheap flights from Calgary to St. Louis from C$ 181

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

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Find the cheapest flights from Calgary to St. Louis

Cheap round-trip flights

American Airlines Logo
1:29 p.m. - 8:09 a.m.YYC-STL
17h 40m1 stop
American Airlines Logo
4:34 p.m. - 12:34 p.m.STL-YYC
21h 00m1 stop
C$ 361American Airlines
Find Deal
sex, 10 out - seg, 13 out
Logo
12:30 a.m. - 10:16 a.m.YYC-STL
8h 46m1 stop
Logo
5:15 p.m. - 5:15 p.m.STL-YYC
25h 00m2 stops
C$ 429
Find Deal
qui, 23 out - dom, 26 out
Logo
8:55 a.m. - 9:06 a.m.YYC-STL
23h 11m1 stop
Logo
7:55 p.m. - 5:17 p.m.STL-YYC
22h 22m2 stops
C$ 455
Find Deal
dom, 28 set - qua, 1 out
American Airlines Logo
6:45 a.m. - 8:53 p.m.YYC-STL
13h 08m1 stop
American Airlines Logo
8:04 p.m. - 12:34 p.m.STL-YYC
17h 30m1 stop
C$ 460American Airlines
Find Deal
ter, 14 out - ter, 21 out
Logo
8:55 a.m. - 9:06 a.m.YYC-STL
23h 11m1 stop
Logo
7:55 p.m. - 8:00 p.m.STL-YYC
25h 05m2 stops
C$ 475
Find Deal
dom, 28 set - sex, 3 out
Logo
7:35 p.m. - 3:56 p.m.YYC-STL
19h 21m1 stop
Logo
10:17 a.m. - 11:05 p.m.STL-YYC
13h 48m2 stops
C$ 484
Find Deal
sex, 24 out - dom, 26 out
WestJet Logo
6:00 a.m. - 11:09 p.m.YYC-STL
16h 09m2 stops
WestJet Logo
6:00 a.m. - 3:05 p.m.STL-YYC
10h 05m2 stops
C$ 631WestJet
Find Deal
qui, 25 set - dom, 28 set
WestJet Logo
7:00 a.m. - 11:10 p.m.YYC-STL
15h 10m2 stops
WestJet Logo
8:50 a.m. - 7:12 p.m.STL-YYC
11h 22m2 stops
C$ 669WestJet
Find Deal
seg, 9 fev - qui, 19 fev
Delta Logo
11:30 a.m. - 11:07 p.m.YYC-STL
10h 37m2 stops
Delta Logo
6:00 a.m. - 1:54 p.m.STL-YYC
8h 54m1 stop
C$ 682Delta
Find Deal
dom, 12 out - dom, 19 out
Delta Logo
7:00 a.m. - 4:45 p.m.YYC-STL
8h 45m2 stops
Delta Logo
12:15 p.m. - 11:02 p.m.STL-YYC
11h 47m2 stops
C$ 786Delta
Find Deal
dom, 28 set - sex, 3 out

American Airlines flights from Calgary to St. Louis

Our best American Airlines deals on Calgary to St. Louis flight tickets
American Airlines
10 Oct
YYC1:29 p.m.Calgary
17h 40m
1 stop
STL8:09 a.m.Lambert-St Louis
13 Oct
STL4:34 p.m.Lambert-St Louis
21h 00m
1 stop
YYC12:34 p.m.Calgary
C$ 361
Find similar
American Airlines
14 Oct
YYC6:45 a.m.Calgary
13h 08m
1 stop
STL8:53 p.m.Lambert-St Louis
21 Oct
STL8:04 p.m.Lambert-St Louis
17h 30m
1 stop
YYC12:34 p.m.Calgary
C$ 460
Find similar
American Airlines
9 Feb
YYC1:40 p.m.Calgary
20h 28m
1 stop
STL11:08 a.m.Lambert-St Louis
19 Feb
STL5:27 a.m.Lambert-St Louis
6h 51m
1 stop
YYC11:18 a.m.Calgary
C$ 552
Find similar

WestJet flights from Calgary to St. Louis

Our best WestJet deals on Calgary to St. Louis flight tickets
WestJet
25 Sep
YYC6:00 a.m.Calgary
16h 09m
2 stops
STL11:09 p.m.Lambert-St Louis
28 Sep
STL6:00 a.m.Lambert-St Louis
10h 05m
2 stops
YYC3:05 p.m.Calgary
C$ 631
Find similar
WestJet
9 Feb
YYC7:00 a.m.Calgary
15h 10m
2 stops
STL11:10 p.m.Lambert-St Louis
19 Feb
STL8:50 a.m.Lambert-St Louis
11h 22m
2 stops
YYC7:12 p.m.Calgary
C$ 669
Find similar
WestJet
24 Sep
YYC12:20 a.m.Calgary
11h 11m
2 stops
STL12:31 p.m.Lambert-St Louis
28 Sep
STL6:00 a.m.Lambert-St Louis
10h 05m
2 stops
YYC3:05 p.m.Calgary
C$ 673
Find similar

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 15 setembro 2025.
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

sex 10/10

1:29 p.m.-8:09 a.m.

1 stop17h 40m

Lambert-St Louis

seg 13/10

4:34 p.m.-12:34 p.m.

1 stop21h 00m

C$ 361

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

qui 23/10

12:30 a.m.-10:16 a.m.

1 stop8h 46m

Lambert-St Louis

dom 26/10

5:15 p.m.-5:15 p.m.

2 stops25h 00m

C$ 429

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom 28/9

8:55 a.m.-9:06 a.m.

1 stop23h 11m

Lambert-St Louis

qua 1/10

7:55 p.m.-5:17 p.m.

2 stops22h 22m

C$ 455

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

ter 14/10

6:45 a.m.-8:53 p.m.

1 stop13h 08m

Lambert-St Louis

ter 21/10

8:04 p.m.-12:34 p.m.

1 stop17h 30m

C$ 460

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom 28/9

8:55 a.m.-9:06 a.m.

1 stop23h 11m

Lambert-St Louis

sex 3/10

7:55 p.m.-8:00 p.m.

2 stops25h 05m

C$ 475

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

sex 24/10

7:35 p.m.-3:56 p.m.

1 stop19h 21m

Lambert-St Louis

dom 26/10

10:17 a.m.-11:05 p.m.

2 stops13h 48m

C$ 484

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

qui 25/9

6:00 a.m.-11:09 p.m.

2 stops16h 09m

Lambert-St Louis

dom 28/9

6:00 a.m.-3:05 p.m.

2 stops10h 05m

C$ 631

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

seg 9/2

7:00 a.m.-11:10 p.m.

2 stops15h 10m

Lambert-St Louis

qui 19/2

8:50 a.m.-7:12 p.m.

2 stops11h 22m

C$ 669

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom 12/10

11:30 a.m.-11:07 p.m.

2 stops10h 37m

Lambert-St Louis

dom 19/10

6:00 a.m.-1:54 p.m.

1 stop8h 54m

C$ 682

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

dom 28/9

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

2 stops8h 45m

Lambert-St Louis

sex 3/10

12:15 p.m.-11:02 p.m.

2 stops11h 47m

C$ 786

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 January is, on average, the cheapest month to fly to St. Louis from Calgary, with most prices found around C$ 410. If you don’t want to visit St. Louis in January, then you should wait until February to fly from Calgary, when ticket prices are also cheap, with an average price of C$ 572.

What is the cheapest day to depart on your flight to St. Louis?

Our data shows that Sunday is the least expensive day to fly to St. Louis. Tickets to fly out on this day can be as low as C$ 435. The most expensive day to fly to St. Louis is Friday, with ticket prices averaging around C$ 772.

What is the cheapest time of day to depart on your flight to St. Louis?

The cheapest time of day to fly to St. Louis is in the afternoon when flights can be purchased for as low as C$ 484. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 710 on average. Flights to St. Louis from Calgary in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

Direct flights

None
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 5h 54m.

  • 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$ 337Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 445Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
WestJetPriceFrom C$ 571Free CancellationRating
7.2
3,091 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
Chesterfield
Collinsville
Litchfield

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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