HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$177+ Cheap flights from Alberta to St. Louis (STL)

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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
YYC — STL
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Alberta to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$333
(American Airlines)

One-way from

$177
(Kiwi.com)

Popular in

November

Cheapest in

January

Average price

$420
Provider with most accurate pricing for Calgary-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Calgary-Lambert-St Louis flights.
Search Deals
From Alberta to Lambert-St Louis
Search Deals
One-way flight from Alberta to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($21 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Alberta to St. Louis

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 April 2, 2025.

This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:45 amYYC - STL
1 stop15h 34mAmerican Airlines
Mon 6/97:20 amSTL - YYC
1 stop17h 09mAmerican Airlines
Deal found 3/31$333
This TravelUp deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/206:29 amYYC - STL
1 stop13h 01mMultiple Airlines
Mon 6/304:23 pmSTL - YYC
1 stop8h 02mMultiple Airlines
Deal found 3/31$340
This TravelUp deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/136:29 amYYC - STL
1 stop16h 25mBritish Airways
Mon 6/234:23 pmSTL - YYC
1 stop8h 02mBritish Airways
Deal found 3/31$347
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1212:25 amYYC - STL
1 stop11h 11mAir Canada
Mon 6/231:30 pmSTL - YYC
1 stop10h 33mAir Canada
Deal found 3/31$355
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/69:15 amYYC - STL
1 stop23h 20mWestJet
Sun 6/156:00 amSTL - YYC
1 stop15h 05mWestJet
Deal found 3/31$365
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/612:05 pmYYC - STL
2 stops11h 54mDelta
Mon 6/99:09 amSTL - YYC
2 stops10h 31mDelta
Deal found 3/31$370
This WestJet deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/162:00 pmYEG - STL
2 stops20h 54mWestJet
Fri 5/236:00 amSTL - YEG
1 stop10h 58mWestJet
Deal found 4/1$497
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:45 amYEG - STL
2 stops13h 19mDelta
Sun 4/136:00 amSTL - YEG
2 stops11h 49mDelta
Deal found 3/31$1,500
This Alaska Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/811:55 amYEG - STL
1 stop11h 04mAlaska Airlines
Sun 4/133:11 pmSTL - YEG
1 stop20h 54mAlaska Airlines
Deal found 3/31$1,755
This Air Canada deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/86:00 amYEG - STL
1 stop7h 49mAir Canada
Sun 4/136:30 amSTL - YEG
2 stops11h 53mAir Canada
Deal found 3/31$1,842

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 2,558,603 searches. Data last updated April 2, 2025.
Use the filters below to find and compare flights from Alberta to St. Louis that are best for you.

Fly from

Alberta

Fly to

St. Louis

Route

Depart

Return

Price

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

6:45 am-11:19 pm

1 stop15h 34m

Lambert-St Louis

Mon 6/9

7:20 am-11:29 pm

1 stop17h 09m

$333

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/20

6:29 am-8:30 pm

1 stop13h 01m

Lambert-St Louis

Mon 6/30

4:23 pm-11:25 pm

1 stop8h 02m

$340

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/13

6:29 am-11:54 pm

1 stop16h 25m

Lambert-St Louis

Mon 6/23

4:23 pm-11:25 pm

1 stop8h 02m

$347

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 6/12

12:25 am-12:36 pm

1 stop11h 11m

Lambert-St Louis

Mon 6/23

1:30 pm-11:03 pm

1 stop10h 33m

$355

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

9:15 am-9:35 am

1 stop23h 20m

Lambert-St Louis

Sun 6/15

6:00 am-8:05 pm

1 stop15h 05m

$365

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Fri 6/6

12:05 pm-12:59 am

2 stops11h 54m

Lambert-St Louis

Mon 6/9

9:09 am-6:40 pm

2 stops10h 31m

$370

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Fri 5/16

2:00 pm-11:54 am

2 stops20h 54m

Lambert-St Louis

Fri 5/23

6:00 am-3:58 pm

1 stop10h 58m

$497

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 5/15

8:55 am-9:09 am

1 stop23h 14m

$177

EdmontonSt. Louis

YEG - STL

YEGSTL

Edmonton

Thu 4/10

9:50 pm-5:43 pm

2 stops42h 53m

$215

CalgarySt. Louis

YYC - STL

YYCSTL

Calgary

Thu 5/15

9:00 am-11:26 pm

2 stops13h 26m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 15 results
1
2

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 $311). Flying from Alberta to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from AB to STL?

Find hourly flight availability from Alberta to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 2, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Alberta to St. Louis as you normally would.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated April 2, 2025.
Read reviews from past customers who have flown Delta, United Airlines and American Airlines from Alberta to St. Louis. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,898 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,615 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,789 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
9,022 reviews
Delta
8.0
Very good
7,898 reviews

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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?

    Lambert-St Louis (STL) is the airport you will fly into if you book a flight from Alberta to St. Louis. It is only a 12.7 mi journey from Lambert-St Louis (STL) to St. Louis’s city center.

  • What are the cheapest airlines to fly from Alberta to St. Louis one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as $218. Users have also found prices from $256 and $295 on Air Canada and American Airlines, respectively.

  • 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 $311). Flying from Alberta to St. Louis in March is currently the most expensive (average of $356). 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

Traveling to a place near Alberta?

Book flights to Alberta if you plan to visit one of these locations
Fenton
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
Chesterfield

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Alberta to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
Pearson Intl to St. Louis flights
Pearson Intl to Kansas City flights
Calgary to Kansas City flights
Vancouver Intl to Kansas City flights
Kelowna to Kansas City flights
Pierre Elliott Trudeau Intl to St. Louis flights
Vancouver Intl to St. Louis flights
Calgary to St. Louis flights
Vancouver Intl to Springfield flights
Pierre Elliott Trudeau Intl to Kansas City flights
Edmonton to Kansas City flights
Ottawa to St. Louis flights
Winnipeg to Kansas City flights
Halifax to Kansas City flights
Pearson Intl to Springfield flights
Edmonton to St. Louis flights
Saskatoon to Kansas City flights
Ottawa to Kansas City flights
Winnipeg to St. Louis flights
Victoria to St. Louis flights
Halifax to St. Louis flights
Charlottetown to St. Louis flights
Pearson Intl to Joplin flights

Top 2 airlines flying from Alberta to St. Louis

Discover the top 2 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 2,558,603 searches. Data last updated April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$295Average$296FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$309Average$468FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.