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Cheap flights from St. Louis to Calgary from C$ 208

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Calgary departing on 24/8. 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

Find the cheapest flights from St. Louis to Calgary

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:57 p.m. - 5:00 p.m.
STL
-
YYC
25h 03m
2 stops
Multiple Airlines Logo
7:00 a.m. - 5:22 p.m.
YYC
-
STL
9h 22m
1 stop
C$ 448Multiple Airlines
Mon, 17 Aug - Fri, 21 Aug
Multiple Airlines Logo
6:17 p.m. - 11:00 a.m.
STL
-
YYC
17h 43m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:22 p.m.
YYC
-
STL
9h 22m
1 stop
C$ 455Multiple Airlines
Mon, 24 Aug - Mon, 31 Aug
Multiple Airlines Logo
4:57 p.m. - 9:50 p.m.
STL
-
YYC
29h 53m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:22 p.m.
YYC
-
STL
9h 22m
1 stop
C$ 456Multiple Airlines
Mon, 17 Aug - Fri, 21 Aug
Multiple Airlines Logo
10:35 a.m. - 9:50 p.m.
STL
-
YYC
12h 15m
1 stop
Multiple Airlines Logo
12:20 a.m. - 9:40 a.m.
YYC
-
STL
8h 20m
1 stop
C$ 461Multiple Airlines
Fri, 25 Sep - Fri, 9 Oct
Multiple Airlines Logo
4:57 p.m. - 5:00 p.m.
STL
-
YYC
25h 03m
2 stops
Multiple Airlines Logo
8:45 a.m. - 7:13 p.m.
YYC
-
STL
9h 28m
1 stop
C$ 477Multiple Airlines
Mon, 17 Aug - Mon, 24 Aug
Multiple Airlines Logo
4:57 p.m. - 11:00 a.m.
STL
-
YYC
19h 03m
1 stop
Multiple Airlines Logo
12:20 a.m. - 5:37 p.m.
YYC
-
STL
16h 17m
1 stop
C$ 479Multiple Airlines
Mon, 10 Aug - Wed, 12 Aug
Multiple Airlines Logo
10:35 a.m. - 2:45 p.m.
STL
-
YYC
29h 10m
2 stops
Multiple Airlines Logo
12:20 a.m. - 9:40 a.m.
YYC
-
STL
8h 20m
1 stop
C$ 480Multiple Airlines
Sat, 26 Sep - Fri, 9 Oct
Multiple Airlines Logo
6:17 p.m. - 11:00 a.m.
STL
-
YYC
17h 43m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:22 p.m.
YYC
-
STL
9h 22m
1 stop
C$ 482Multiple Airlines
Fri, 28 Aug - Mon, 31 Aug
Multiple Airlines Logo
4:57 p.m. - 9:50 p.m.
STL
-
YYC
29h 53m
1 stop
Multiple Airlines Logo
8:45 a.m. - 7:13 p.m.
YYC
-
STL
9h 28m
1 stop
C$ 486Multiple Airlines
Mon, 17 Aug - Mon, 24 Aug
Multiple Airlines Logo
4:57 p.m. - 9:50 p.m.
STL
-
YYC
29h 53m
1 stop
Multiple Airlines Logo
8:45 a.m. - 7:13 p.m.
YYC
-
STL
9h 28m
1 stop
C$ 487Multiple Airlines
Mon, 17 Aug - Mon, 24 Aug

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WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
15 Sep
STL6:00 a.m.Lambert-St Louis
12h 10m
1 stop
YYC5:10 p.m.Calgary
23 Sep
YYC10:15 a.m.Calgary
12h 01m
1 stop
STL11:16 p.m.Lambert-St Louis
C$ 576
WestJet
11 Sep
STL7:05 a.m.Lambert-St Louis
11h 05m
1 stop
YYC5:10 p.m.Calgary
15 Sep
YYC7:00 a.m.Calgary
25h 00m
1 stop
STL9:00 a.m.Lambert-St Louis
C$ 577
WestJet
9 Sep
STL7:05 a.m.Lambert-St Louis
11h 05m
1 stop
YYC5:10 p.m.Calgary
16 Sep
YYC10:15 a.m.Calgary
12h 01m
1 stop
STL11:16 p.m.Lambert-St Louis
C$ 579

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
25 Aug
STL6:00 a.m.Lambert-St Louis
18h 42m
1 stop
YYC11:42 p.m.Calgary
31 Aug
YYC1:52 p.m.Calgary
9h 22m
1 stop
STL12:14 a.m.Lambert-St Louis
C$ 552
American Airlines
29 Jul
STL5:58 p.m.Lambert-St Louis
20h 00m
1 stop
YYC12:58 p.m.Calgary
5 Aug
YYC1:52 p.m.Calgary
17h 32m
1 stop
STL8:24 a.m.Lambert-St Louis
C$ 708

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Calgary 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 22 July 2026.
Use the filters below to find and compare flights from St. Louis to Calgary that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 17/8

4:57 p.m.-5:00 p.m.

2 stops25h 03m

Calgary

Fri 21/8

7:00 a.m.-5:22 p.m.

1 stop9h 22m

C$ 448

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 24/8

6:17 p.m.-11:00 a.m.

1 stop17h 43m

Calgary

Mon 31/8

7:00 a.m.-5:22 p.m.

1 stop9h 22m

C$ 455

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 17/8

4:57 p.m.-9:50 p.m.

1 stop29h 53m

Calgary

Fri 21/8

7:00 a.m.-5:22 p.m.

1 stop9h 22m

C$ 456
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 25/9

10:35 a.m.-9:50 p.m.

1 stop12h 15m

Calgary

Fri 9/10

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

1 stop8h 20m

C$ 461

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 17/8

4:57 p.m.-5:00 p.m.

2 stops25h 03m

Calgary

Mon 24/8

8:45 a.m.-7:13 p.m.

1 stop9h 28m

C$ 477

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 10/8

4:57 p.m.-11:00 a.m.

1 stop19h 03m

Calgary

Wed 12/8

12:20 a.m.-5:37 p.m.

1 stop16h 17m

C$ 479

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sat 26/9

10:35 a.m.-2:45 p.m.

2 stops29h 10m

Calgary

Fri 9/10

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

1 stop8h 20m

C$ 480

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Fri 28/8

6:17 p.m.-11:00 a.m.

1 stop17h 43m

Calgary

Mon 31/8

7:00 a.m.-5:22 p.m.

1 stop9h 22m

C$ 482

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 17/8

4:57 p.m.-9:50 p.m.

1 stop29h 53m

Calgary

Mon 24/8

8:45 a.m.-7:13 p.m.

1 stop9h 28m

C$ 486

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Mon 17/8

4:57 p.m.-9:50 p.m.

1 stop29h 53m

Calgary

Mon 24/8

8:45 a.m.-7:13 p.m.

1 stop9h 28m

C$ 487

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 Calgary from

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

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 St. Louis and Calgary?

What is the cheapest month to fly to Calgary?

The cheapest month to fly to Calgary from St. Louis is in April. Flight prices, which tend to average around C$ 787, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of April, then book flights to Calgary from St. Louis during October instead. Flights to Calgary in October, while not as cheap as those in April, still average around C$ 799.

How far in advance should I book a flight from St. Louis to Calgary?

You are more likely to see cheaper flights to Calgary from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Calgary for around C$ 934 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Calgary from St. Louis for as low as C$ 804 on momondo.

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

You could potentially save up to 45% on your flight if you consider stops on a St. Louis to Calgary flight.

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

As of July 2026, prices for St. Louis to Calgary flights are approximately 2% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Calgary

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

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

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

Fastest flight time

5h 47m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 5h 47m
There are no direct flights from St. Louis to Calgary. There are no popular flight routes from St. Louis to Calgary.
Search flight deals

Frequently asked questions about flying from St. Louis to Calgary

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

    There are 2315.6 km between Lambert-St Louis and Calgary. In terms of flight time, this usually takes a little over 5h 47m.

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

    Prices for flights from Lambert-St Louis Airport to Calgary Airport are updated daily.

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

  • What documentation or ID do you need to fly to Calgary Airport?

    The necessary travel and health documents for your Calgary Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Travelling to a place near Calgary?

Book flights to Calgary if you plan to visit one of these locations
Banff
Canmore
Lake Louise
Radium Hot Springs
Airdrie
Kananaskis
Drumheller

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to Calgary . Millions of users trust and use momondo every year so you are in good hands.

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

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

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

momondo provides multiple filters to help you find the best flight to Calgary from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are simply researching potential flights to Calgary, momondo offers a useful price alert feature which will track prices for flights to Calgary from St. Louis and alert you when they change.

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