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 2 as of December 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.

$134 Cheap Flights from Calgary to St. Louis in 2025/26

Q: 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 $468 to $470. The lowest price recently found on this route was $217.

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Find the cheapest flights from Calgary to St. Louis

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One-way

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Cheap round-trip flights

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9:45 pm - 6:51 am

YYC

STL

32h 06m2 stops

8:22 pm - 11:43 am

STL

YYC

16h 21m1 stop

$217Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

7:35 pm - 12:08 pm

YYC

STL

15h 33m1 stop

8:22 pm - 11:43 am

STL

YYC

16h 21m1 stop

$310Multiple Airlines

Sat, Jan 31 - Sat, Feb 7

6:30 am - 4:45 pm

YYC

STL

9h 15m1 stop

5:25 pm - 8:54 pm

STL

YYC

28h 29m1 stop

$389Delta

Thu, Jan 22 - Mon, Jan 26

6:30 am - 4:45 pm

YYC

STL

9h 15m1 stop

6:10 am - 8:54 pm

STL

YYC

15h 44m1 stop

$397Delta

Thu, Jan 22 - Mon, Jan 26

6:30 am - 8:43 pm

YYC

STL

13h 13m2 stops

3:31 pm - 8:54 pm

STL

YYC

6h 23m1 stop

$437Delta

Thu, Jan 22 - Mon, Jan 26

6:15 am - 4:55 pm

YYC

STL

9h 40m1 stop

9:57 am - 8:59 pm

STL

YYC

12h 02m2 stops

$496Air Canada

Thu, Jan 22 - Mon, Jan 26

6:15 am - 1:16 pm

YYC

STL

6h 01m1 stop

9:57 am - 8:59 pm

STL

YYC

12h 02m2 stops

$497Air Canada

Thu, Jan 22 - Mon, Jan 26

6:30 am - 8:43 pm

YYC

STL

13h 13m2 stops

9:59 am - 11:02 pm

STL

YYC

14h 03m2 stops

$501Delta

Sat, Jan 31 - Sat, Feb 7

7:00 am - 4:45 pm

YYC

STL

8h 45m2 stops

6:10 am - 2:00 pm

STL

YYC

8h 50m2 stops

$550WestJet

Thu, Jan 22 - Mon, Jan 26

7:00 am - 4:45 pm

YYC

STL

8h 45m2 stops

6:10 am - 7:15 pm

STL

YYC

14h 05m2 stops

$565WestJet

Thu, Jan 22 - Mon, Jan 26

Delta flights from Calgary to St. Louis

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

Delta

Jan 22

YYC6:30 amCalgary

9h 15m

1 stop

STL4:45 pmLambert-St Louis

Jan 26

STL5:25 pmLambert-St Louis

28h 29m

1 stop

YYC8:54 pmCalgary

$389

Find similar

Delta

Jan 22

YYC6:30 amCalgary

9h 15m

1 stop

STL4:45 pmLambert-St Louis

Jan 26

STL6:10 amLambert-St Louis

15h 44m

1 stop

YYC8:54 pmCalgary

$397

Find similar

Delta

Jan 22

YYC6:30 amCalgary

15h 55m

1 stop

STL11:25 pmLambert-St Louis

Jan 26

STL6:10 amLambert-St Louis

15h 44m

1 stop

YYC8:54 pmCalgary

$404

Find similar

Air Canada flights from Calgary to St. Louis

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

Air Canada

Jan 22

YYC6:15 amCalgary

6h 01m

1 stop

STL1:16 pmLambert-St Louis

Jan 26

STL9:57 amLambert-St Louis

12h 02m

2 stops

YYC8:59 pmCalgary

$497

Find similar

Air Canada

Jan 22

YYC2:13 pmCalgary

5h 45m

1 stop

STL8:58 pmLambert-St Louis

Jan 26

STL9:57 amLambert-St Louis

12h 02m

2 stops

YYC8:59 pmCalgary

$504

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 1/31

9:45 pm-6:51 am

2 stops32h 06m

Lambert-St Louis

Sat 2/7

8:22 pm-11:43 am

1 stop16h 21m

$217

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 1/31

7:35 pm-12:08 pm

1 stop15h 33m

Lambert-St Louis

Sat 2/7

8:22 pm-11:43 am

1 stop16h 21m

$310

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

6:30 am-4:45 pm

1 stop9h 15m

Lambert-St Louis

Mon 1/26

5:25 pm-8:54 pm

1 stop28h 29m

$389

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

6:30 am-4:45 pm

1 stop9h 15m

Lambert-St Louis

Mon 1/26

6:10 am-8:54 pm

1 stop15h 44m

$397

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

6:30 am-8:43 pm

2 stops13h 13m

Lambert-St Louis

Mon 1/26

3:31 pm-8:54 pm

1 stop6h 23m

$437

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

6:15 am-4:55 pm

1 stop9h 40m

Lambert-St Louis

Mon 1/26

9:57 am-8:59 pm

2 stops12h 02m

$496

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

6:15 am-1:16 pm

1 stop6h 01m

Lambert-St Louis

Mon 1/26

9:57 am-8:59 pm

2 stops12h 02m

$497

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 1/31

6:30 am-8:43 pm

2 stops13h 13m

Lambert-St Louis

Sat 2/7

9:59 am-11:02 pm

2 stops14h 03m

$501

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

7:00 am-4:45 pm

2 stops8h 45m

Lambert-St Louis

Mon 1/26

6:10 am-2:00 pm

2 stops8h 50m

$550

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 1/22

7:00 am-4:45 pm

2 stops8h 45m

Lambert-St Louis

Mon 1/26

6:10 am-7:15 pm

2 stops14h 05m

$565

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

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?

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 $304. The month of February is another great option to travel to St. Louis, with average flight prices from Calgary averaging around $413.

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

Fastest flight time	5h 41m
Direct flights	None

The fastest flight from Calgary to St. Louis takes 5h 41m

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 distance between Calgary and Lambert-St Louis is about 1438.9 mi. By plane, this route typically takes 5h 41m.
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 2 as of December 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 54% of all bookings. The subsequent popular airline is United Airlines at 46%.

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 11,054 reviews		Search American Airlines flights
United Airlines	PriceFrom $422	Free Cancellation	Rating 7.4 9,091 reviews		Search United Airlines flights

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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.