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Cheap flights from Alberta to St. Louis from C$ 277

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/10. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
28 Jul — 4 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Alberta to St. Louis

Enter your travel dates to find the best prices.

Cheapest flights from Alberta to St. Louis
Explore the most affordable flight options available from Alberta to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 June 2026.

Fri 2/1012:33 p.m.
YYC
-
STL
1 stop11h 11m
Delta
Tue 6/109:45 a.m.
STL
-
YYC
1 stop12h 09m
Delta
Deal found 25/6C$ 490
Sat 10/102:00 p.m.
YYC
-
STL
1 stop9h 36m
Delta
Wed 14/102:15 p.m.
STL
-
YYC
1 stop9h 58m
Delta
Deal found 26/6C$ 505
Thu 3/96:45 a.m.
YYC
-
STL
1 stop15h 57m
American Airlines
Mon 7/96:00 a.m.
STL
-
YYC
1 stop18h 42m
American Airlines
Deal found 25/6C$ 517
Mon 10/812:20 a.m.
YYC
-
STL
1 stop10h 26m
WestJet
Mon 17/812:52 p.m.
STL
-
YYC
1 stop9h 58m
WestJet
Deal found 23/6C$ 538
Fri 17/77:00 a.m.
YYC
-
STL
1 stop14h 15m
WestJet
Mon 20/76:30 a.m.
STL
-
YYC
1 stop14h 45m
WestJet
Deal found 24/6C$ 545
Sat 10/106:50 p.m.
YYC
-
STL
2 stops14h 58m
WestJet
Wed 14/106:30 a.m.
STL
-
YYC
2 stops12h 00m
WestJet
Deal found 26/6C$ 548
Sat 8/87:00 a.m.
YYC
-
STL
2 stops26h 23m
WestJet
Sat 15/86:20 a.m.
STL
-
YYC
2 stops14h 20m
WestJet
Deal found 24/6C$ 549
Mon 21/910:15 a.m.
YYC
-
STL
1 stop12h 01m
WestJet
Thu 1/104:59 p.m.
STL
-
YYC
1 stop19h 01m
WestJet
Deal found 23/6C$ 552
Mon 19/107:00 a.m.
YEG
-
STL
2 stops15h 09m
American Airlines
Thu 22/106:02 a.m.
STL
-
YEG
2 stops10h 57m
American Airlines
Deal found 24/6C$ 765
Mon 23/116:00 a.m.
YEG
-
STL
1 stop8h 26m
Air Canada
Fri 27/114:05 p.m.
STL
-
YEG
1 stop8h 18m
Air Canada
Deal found 27/6C$ 768
Mon 31/86:00 a.m.
YEG
-
STL
1 stop9h 34m
United Airlines
Wed 2/98:00 a.m.
STL
-
YEG
1 stop8h 32m
United Airlines
Deal found 24/6C$ 785
Mon 21/97:00 a.m.
YEG
-
STL
2 stops15h 16m
WestJet
Thu 1/106:00 a.m.
STL
-
YEG
2 stops16h 40m
WestJet
Deal found 23/6C$ 798

Find flight deals from Alberta to St. Louis

Keep the following information in mind while searching for Alberta to St. Louis flight deals. Data was last updated 28 June 2026.

Round-trip from

C$ 490

One-way from

C$ 277

Popular in

June

Cheapest in

May

Average price

C$ 985
Delta
  • Delta
  • 2/10-6/10
  • 2 total stops
  • 23h 20m total
  • Alberta to St. Louis
Search Deals
9/10
  • 9/10
  • 1 total stop
  • 8h 20m total
  • Alberta to St. Louis
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Alberta 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, Cheapflights users made 629,999 searches. Data last updated 28 June 2026.
Use the filters below to find and compare flights from Alberta to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 2/10

12:33 p.m.-12:44 a.m.

1 stop11h 11m

Lambert-St Louis

Tue 6/10

9:45 a.m.-8:54 p.m.

1 stop12h 09m

C$ 490

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 10/10

2:00 p.m.-12:36 a.m.

1 stop9h 36m

Lambert-St Louis

Wed 14/10

2:15 p.m.-11:13 p.m.

1 stop9h 58m

C$ 505

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 11/8

9:00 p.m.-9:54 a.m.

2 stops11h 54m

Lambert-St Louis

Mon 17/8

11:00 a.m.-5:10 p.m.

1 stop7h 10m

C$ 545

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Sat 8/8

7:00 a.m.-10:23 a.m.

2 stops26h 23m

Lambert-St Louis

Sat 15/8

6:20 a.m.-7:40 p.m.

2 stops14h 20m

C$ 549

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 21/9

10:15 a.m.-11:16 p.m.

1 stop12h 01m

Lambert-St Louis

Thu 1/10

4:59 p.m.-11:00 a.m.

1 stop19h 01m

C$ 552

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 17/7

7:00 a.m.-10:15 p.m.

1 stop14h 15m

Lambert-St Louis

Mon 20/7

5:36 p.m.-7:40 p.m.

2 stops27h 04m

C$ 554

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 13/8

12:20 a.m.-9:54 a.m.

1 stop8h 34m

Lambert-St Louis

Mon 17/8

3:39 p.m.-11:00 a.m.

1 stop20h 21m

C$ 569

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 2/10

6:30 a.m.-8:00 p.m.

1 stop12h 30m

Lambert-St Louis

Tue 6/10

2:40 p.m.-10:57 p.m.

1 stop9h 17m

C$ 572

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Tue 4/8

7:00 a.m.-12:16 a.m.

1 stop16h 16m

Lambert-St Louis

Sun 16/8

5:00 a.m.-11:42 p.m.

1 stop19h 42m

C$ 573

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Mon 31/8

7:00 a.m.-9:20 a.m.

1 stop25h 20m

Lambert-St Louis

Tue 1/9

12:52 p.m.-9:50 p.m.

1 stop9h 58m

C$ 582

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/6

Showing 1-10 of 32 resultsSorted by cheapest first
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Best time to book a flight from Alberta to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Alberta with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Alberta to St. Louis

What is the cheapest month to book a flight from Alberta to St. Louis?

Currently, August is the cheapest month in which you can book a flight from Alberta to St. Louis (average of C$ 268). Flying from Alberta to St. Louis in June is currently the most expensive (average of C$ 781). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Alberta to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to St. Louis from Alberta?

    For a flight from Alberta to St. Louis, you will be flying into Lambert-St Louis. Lambert-St Louis (STL) is just 20.4 km from the centre of the city.

  • How long is the flight from Alberta to St. Louis?

    For as low as C$ 768, Delta can have you in St. Louis from Alberta in 8h 26m. The distance between Alberta and St. Louis is about 2393 km. Both multi-stop and direct flights can be found to your destination and back.

  • Can I find deals for flights from Alberta to St. Louis that include hotel bookings?

    Yes. In addition to deals on Alberta to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Alberta to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Alberta to St. Louis.

  • Can I find deals for business class flights from Alberta to St. Louis?

    Yes. Cheapflights offers flight deals from Alberta to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Alberta to St. Louis?

    Currently, August is the cheapest month in which you can book a flight from Alberta to St. Louis (average of C$ 268). Flying from Alberta to St. Louis in June is currently the most expensive (average of C$ 781). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Chesterfield

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Top 4 airlines flying from Alberta to St. Louis

Discover the top 4 airlines that operate flights from Alberta to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 28 June 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 268AverageC$ 918FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 354AverageC$ 557FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapestC$ 404AverageC$ 984FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
WestJetCheapestC$ 580AverageC$ 814FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Alberta to St. Louis?

When you search for this flight from Alberta to St. Louis, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Alberta to St. Louis?

Cheapflights helps you find that perfect flight to St. Louis from Alberta by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Alberta to St. Louis with no change fees?

Yes! Cheapflights helps users easily find flights from Alberta to St. Louis with no change fees.

Can Cheapflights notify me if prices for flights from Alberta to St. Louis become cheaper?

Yes, Cheapflights offers price alerts on Alberta to St. Louis flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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