What is the cheapest airline that flies from Calgary to Lambert-St Louis?

American Airlines, Air Canada, and Alaska Airlines are the most popular carriers operating from Calgary to Lambert-St Louis

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?

The number of operators available for flights from Calgary Airport to Lambert-St Louis Airport is 1 as of July 2025.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$180 Cheap Flights from Calgary to St. Louis in 2025

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Find the cheapest flights from Calgary to St. Louis

Round-trip

One-way

Cheap round-trip flights

8:55 am - 9:06 amYYC-STL

23h 11m1 stop

7:55 pm - 2:45 pmSTL-YYC

19h 50m1 stop

$281

Find Deal

Sun, Sep 14 - Sun, Sep 21

8:55 am - 9:11 amYYC-STL

23h 16m1 stop

7:54 pm - 2:45 pmSTL-YYC

19h 51m1 stop

$305

Find Deal

Thu, Aug 28 - Tue, Sep 2

6:29 am - 11:30 amYYC-STL

28h 01m1 stop

6:10 am - 11:19 pmSTL-YYC

18h 09m1 stop

$320American Airlines

Find Deal

Fri, Sep 5 - Sat, Sep 13

8:55 am - 9:06 amYYC-STL

23h 11m1 stop

12:05 pm - 6:24 pmSTL-YYC

7h 19m1 stop

$322

Find Deal

Fri, Sep 26 - Sun, Sep 28

6:29 am - 8:18 pmYYC-STL

12h 49m1 stop

9:56 am - 11:19 pmSTL-YYC

14h 23m1 stop

$370American Airlines

Find Deal

Sun, Aug 31 - Wed, Sep 3

12:20 am - 3:18 pmYYC-STL

13h 58m1 stop

1:30 pm - 11:16 pmSTL-YYC

10h 46m1 stop

$407Air Canada

Find Deal

Thu, Sep 25 - Sun, Sep 28

6:15 am - 9:50 pmYYC-STL

14h 35m1 stop

8:54 am - 9:48 pmSTL-YYC

13h 54m1 stop

$429United Airlines

Find Deal

Wed, Aug 13 - Sat, Aug 16

8:00 am - 7:38 pmYYC-STL

10h 38m1 stop

9:15 am - 6:25 pmSTL-YYC

10h 10m2 stops

$437Air Canada

Find Deal

Fri, Sep 5 - Sat, Sep 13

6:40 am - 2:29 pmYYC-STL

6h 49m1 stop

3:30 pm - 10:57 pmSTL-YYC

8h 27m2 stops

$453Delta

Find Deal

Wed, Aug 13 - Sat, Aug 16

7:55 am - 5:47 pmYYC-STL

8h 52m1 stop

11:29 am - 10:57 pmSTL-YYC

12h 28m2 stops

$476Delta

Find Deal

Thu, Aug 28 - Tue, Sep 2

Air Canada flights from Calgary to St. Louis

Our best Air Canada deals on Calgary to St. Louis flight tickets

Air Canada

Sep 25

YYC12:20 amCalgary

13h 58m

1 stop

STL3:18 pmLambert-St Louis

Sep 28

STL1:30 pmLambert-St Louis

10h 46m

1 stop

YYC11:16 pmCalgary

$407

Find similar

Air Canada

Sep 5

YYC8:00 amCalgary

10h 38m

1 stop

STL7:38 pmLambert-St Louis

Sep 13

STL9:15 amLambert-St Louis

10h 10m

2 stops

YYC6:25 pmCalgary

$437

Find similar

Air Canada

Aug 26

YYC1:10 amCalgary

13h 11m

1 stop

STL3:21 pmLambert-St Louis

Sep 1

STL4:00 pmLambert-St Louis

8h 25m

1 stop

YYC11:25 pmCalgary

$444

Find similar

Delta flights from Calgary to St. Louis

Our best Delta deals on Calgary to St. Louis flight tickets

Delta

Aug 13

YYC6:40 amCalgary

6h 49m

1 stop

STL2:29 pmLambert-St Louis

Aug 16

STL3:30 pmLambert-St Louis

8h 27m

2 stops

YYC10:57 pmCalgary

$453

Find similar

Delta

Aug 28

YYC7:55 amCalgary

8h 52m

1 stop

STL5:47 pmLambert-St Louis

Sep 2

STL11:29 amLambert-St Louis

12h 28m

2 stops

YYC10:57 pmCalgary

$476

Find similar

Delta

Aug 27

YYC7:55 amCalgary

7h 50m

2 stops

STL4:45 pmLambert-St Louis

Sep 1

STL7:35 amLambert-St Louis

12h 05m

2 stops

YYC6:40 pmCalgary

$482

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 9/14

8:55 am-9:06 am

1 stop23h 11m

Lambert-St Louis

Sun 9/21

7:55 pm-2:45 pm

1 stop19h 50m

$281

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 8/28

8:55 am-9:11 am

1 stop23h 16m

Lambert-St Louis

Tue 9/2

7:54 pm-2:45 pm

1 stop19h 51m

$305

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 9/5

6:29 am-11:30 am

1 stop28h 01m

Lambert-St Louis

Sat 9/13

6:10 am-11:19 pm

1 stop18h 09m

$320

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 9/26

8:55 am-9:06 am

1 stop23h 11m

Lambert-St Louis

Sun 9/28

12:05 pm-6:24 pm

1 stop7h 19m

$322

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sun 8/31

6:29 am-8:18 pm

1 stop12h 49m

Lambert-St Louis

Wed 9/3

9:56 am-11:19 pm

1 stop14h 23m

$370

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 9/25

12:20 am-3:18 pm

1 stop13h 58m

Lambert-St Louis

Sun 9/28

1:30 pm-11:16 pm

1 stop10h 46m

$407

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 8/13

6:15 am-9:50 pm

1 stop14h 35m

Lambert-St Louis

Sat 8/16

8:54 am-9:48 pm

1 stop13h 54m

$429

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 9/5

8:00 am-7:38 pm

1 stop10h 38m

Lambert-St Louis

Sat 9/13

9:15 am-6:25 pm

2 stops10h 10m

$437

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Wed 8/13

6:40 am-2:29 pm

1 stop6h 49m

Lambert-St Louis

Sat 8/16

3:30 pm-10:57 pm

2 stops8h 27m

$453

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 8/28

7:55 am-5:47 pm

1 stop8h 52m

Lambert-St Louis

Tue 9/2

11:29 am-10:57 pm

2 stops12h 28m

$476

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

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

In general, January is the cheapest month to fly from Calgary to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $296. The month of October is another great option to travel to St. Louis, with average flight prices from Calgary averaging around $386.

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

The cheapest day to depart on your flight to St. Louis is on a Friday when prices can be found for as low as $296. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $541. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

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

Best Price Found	$180
Fastest flight time	5h 43m
Direct flights	None
Airports in St. Louis	1 airport

The best one-way flight to St. Louis from Calgary in the past 72 hours is $180. The best round-trip flight deal from Calgary to St. Louis found on momondo in the last 72 hours is $281.

The fastest flight from Calgary to St. Louis takes 5h 43m

There are no direct flights from Calgary to St. Louis. Popular non-direct route for this connection is Calgary Airport - Lambert-St Louis Airport.

There is 1 airport near St. Louis: Lambert-St Louis (STL)

Search flight deals

How far is Calgary to Lambert-St Louis by plane?
The distance between Calgary and Lambert-St Louis is about 1438.9 mi. By plane, this route typically takes 6h 49m.
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?
The number of operators available for flights from Calgary Airport to Lambert-St Louis Airport is 1 as of July 2025.
How old do you have to be to fly from Calgary Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Lambert-St Louis Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lambert-St Louis Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Calgary to St. Louis?
momondo data reveals that the most frequently booked airline on the route from Calgary to St. Louis is American Airlines, representing 100% of all bookings.

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
American Airlines	PriceFrom $309	Free Cancellation	Rating 7.2 10,000 reviews		Search American Airlines flights

St. Charles

Chesterfield

Hermann

Fairview Heights

Maryland Heights

Florissant

Fenton

Collinsville

O'Fallon

Alton

St. Peters

Farmington

Wentzville

Festus

Glencoe

Eureka

Edwardsville

Clayton

Shrewsbury

Grafton

Why use momondo?

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

Finding the right flight to St. Louis from Calgary is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Calgary with this policy.

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

momondo helps you find the best flight between Calgary and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Calgary to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.