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Cheap flights from St. Louis to Calgary from C$ 233

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 15/9. 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 St. Louis to Calgary

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:33 p.m. - 5:10 p.m.
STL
-
YYC
23h 37m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:30 p.m.
YYC
-
STL
9h 30m
1 stop
C$ 457Multiple Airlines
Thu, 27 Aug - Sun, 30 Aug
Multiple Airlines Logo
6:33 p.m. - 9:50 p.m.
STL
-
YYC
28h 17m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:37 p.m.
YYC
-
STL
9h 37m
1 stop
C$ 461Multiple Airlines
Sun, 2 Aug - Thu, 6 Aug
Multiple Airlines Logo
6:33 p.m. - 11:00 a.m.
STL
-
YYC
17h 27m
1 stop
Multiple Airlines Logo
8:45 a.m. - 7:23 p.m.
YYC
-
STL
9h 38m
1 stop
C$ 471Multiple Airlines
Tue, 18 Aug - Tue, 25 Aug
Multiple Airlines Logo
6:33 p.m. - 3:15 p.m.
STL
-
YYC
21h 42m
2 stops
Multiple Airlines Logo
7:00 a.m. - 5:37 p.m.
YYC
-
STL
9h 37m
1 stop
C$ 472Multiple Airlines
Sun, 2 Aug - Thu, 6 Aug
Multiple Airlines Logo
6:34 p.m. - 9:50 p.m.
STL
-
YYC
28h 16m
1 stop
Multiple Airlines Logo
7:00 a.m. - 8:57 a.m.
YYC
-
STL
24h 57m
1 stop
C$ 482Multiple Airlines
Thu, 6 Aug - Tue, 11 Aug
American Airlines Logo
9:46 a.m. - 11:20 p.m.
STL
-
YYC
14h 34m
1 stop
American Airlines Logo
6:30 a.m. - 11:20 p.m.
YYC
-
STL
15h 50m
1 stop
C$ 545American Airlines
Tue, 15 Sep - Wed, 23 Sep
Multiple Airlines Logo
6:31 p.m. - 11:00 a.m.
STL
-
YYC
17h 29m
1 stop
Multiple Airlines Logo
7:00 a.m. - 5:30 p.m.
YYC
-
STL
9h 30m
1 stop
C$ 574Multiple Airlines
Tue, 16 Jun - Tue, 23 Jun
Multiple Airlines Logo
6:33 p.m. - 9:50 p.m.
STL
-
YYC
28h 17m
1 stop
Multiple Airlines Logo
3:30 p.m. - 5:37 p.m.
YYC
-
STL
25h 07m
2 stops
C$ 577Multiple Airlines
Tue, 7 Jul - Mon, 13 Jul
Multiple Airlines Logo
6:33 p.m. - 9:50 p.m.
STL
-
YYC
28h 17m
1 stop
Multiple Airlines Logo
8:45 a.m. - 7:23 p.m.
YYC
-
STL
9h 38m
1 stop
C$ 589Multiple Airlines
Tue, 14 Jul - Sat, 18 Jul
American Airlines Logo
8:07 p.m. - 12:35 p.m.
STL
-
YYC
17h 28m
1 stop
American Airlines Logo
6:30 a.m. - 8:03 p.m.
YYC
-
STL
12h 33m
1 stop
C$ 592American Airlines
Tue, 15 Sep - Wed, 23 Sep

WestJet flights from St. Louis to Calgary

Our best WestJet deals on St. Louis to Calgary flight tickets
WestJet
15 Sep
STL10:45 a.m.Lambert-St Louis
10h 20m
1 stop
YYC8:05 p.m.Calgary
23 Sep
YYC10:15 a.m.Calgary
11h 46m
1 stop
STL11:01 p.m.Lambert-St Louis
C$ 656
WestJet
11 Jul
STL11:18 a.m.Lambert-St Louis
9h 22m
2 stops
YYC7:40 p.m.Calgary
15 Jul
YYC7:00 a.m.Calgary
14h 15m
1 stop
STL10:15 p.m.Lambert-St Louis
C$ 680
WestJet
11 Jul
STL11:18 a.m.Lambert-St Louis
10h 22m
2 stops
YYC8:40 p.m.Calgary
15 Jul
YYC7:00 a.m.Calgary
15h 53m
1 stop
STL11:53 p.m.Lambert-St Louis
C$ 682

American Airlines flights from St. Louis to Calgary

Our best American Airlines deals on St. Louis to Calgary flight tickets
American Airlines
15 Sep
STL9:46 a.m.Lambert-St Louis
14h 34m
1 stop
YYC11:20 p.m.Calgary
23 Sep
YYC6:30 a.m.Calgary
15h 50m
1 stop
STL11:20 p.m.Lambert-St Louis
C$ 545
American Airlines
15 Sep
STL8:07 p.m.Lambert-St Louis
17h 28m
1 stop
YYC12:35 p.m.Calgary
23 Sep
YYC6:30 a.m.Calgary
12h 33m
1 stop
STL8:03 p.m.Lambert-St Louis
C$ 592
American Airlines
5 Aug
STL6:00 a.m.Lambert-St Louis
18h 29m
1 stop
YYC11:29 p.m.Calgary
12 Aug
YYC1:40 p.m.Calgary
9h 19m
1 stop
STL11:59 p.m.Lambert-St Louis
C$ 596

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 May 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

Thu 27/8

6:33 p.m.-5:10 p.m.

1 stop23h 37m

Calgary

Sun 30/8

7:00 a.m.-5:30 p.m.

1 stop9h 30m

C$ 457

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 2/8

6:33 p.m.-9:50 p.m.

1 stop28h 17m

Calgary

Thu 6/8

7:00 a.m.-5:37 p.m.

1 stop9h 37m

C$ 461

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 18/8

6:33 p.m.-11:00 a.m.

1 stop17h 27m

Calgary

Tue 25/8

8:45 a.m.-7:23 p.m.

1 stop9h 38m

C$ 471

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Sun 2/8

6:33 p.m.-3:15 p.m.

2 stops21h 42m

Calgary

Thu 6/8

7:00 a.m.-5:37 p.m.

1 stop9h 37m

C$ 472

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Thu 6/8

6:34 p.m.-9:50 p.m.

1 stop28h 16m

Calgary

Tue 11/8

7:00 a.m.-8:57 a.m.

1 stop24h 57m

C$ 482

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 15/9

9:46 a.m.-11:20 p.m.

1 stop14h 34m

Calgary

Wed 23/9

6:30 a.m.-11:20 p.m.

1 stop15h 50m

C$ 545
Quickest round-trip

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 16/6

6:31 p.m.-11:00 a.m.

1 stop17h 29m

Calgary

Tue 23/6

7:00 a.m.-5:30 p.m.

1 stop9h 30m

C$ 574

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 7/7

6:33 p.m.-9:50 p.m.

1 stop28h 17m

Calgary

Mon 13/7

3:30 p.m.-5:37 p.m.

2 stops25h 07m

C$ 577

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 14/7

6:33 p.m.-9:50 p.m.

1 stop28h 17m

Calgary

Sat 18/7

8:45 a.m.-7:23 p.m.

1 stop9h 38m

C$ 589

St. LouisCalgary

STL - YYC

STLYYC

Lambert-St Louis

Tue 15/9

8:07 p.m.-12:35 p.m.

1 stop17h 28m

Calgary

Wed 23/9

6:30 a.m.-8:03 p.m.

1 stop12h 33m

C$ 592

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 November. Flight prices, which tend to average around C$ 457, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Calgary from St. Louis during October instead. Flights to Calgary in October, while not as cheap as those in November, still average around C$ 762.

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$ 829 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$ 693 on momondo.

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

You could potentially save up to 25% 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 May 2026, prices for St. Louis to Calgary flights are approximately 20% cheaper 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 43m

Direct flights

None
The fastest flight from St. Louis to Calgary takes 5h 43m
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 43m.

  • 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
Kananaskis
Drumheller
Airdrie

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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