$259 Cheap Flights from Alexandria (AEX) to St. Louis (STL)

View $259 flight on Wed, Oct 29, 2025Opens in a new window

Popular airlines from Alexandria, LA (AEX-Alexandria Intl.) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Alexandria to St. Louis (AEX-STL)

Prices were available within the past 7 days and start at $259 for one-way flights and $356 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Mar 11 - Tue, Mar 24
AEX
Alexandria
STL
St. Louis
$356 Roundtrip, just found
$356
Roundtrip
just found
Select Delta flight, departing Wed, Mar 11 from Alexandria to St. Louis, returning Tue, Mar 24, priced at $356 just found
Delta
Sat, Mar 14 - Tue, Mar 24
AEX
Alexandria
STL
St. Louis
$361 Roundtrip, just found
$361
Roundtrip
just found
Select Delta flight, departing Sat, Mar 14 from Alexandria to St. Louis, returning Tue, Mar 24, priced at $361 just found
Delta
Sun, Mar 15 - Tue, Mar 24
AEX
Alexandria
STL
St. Louis
$366 Roundtrip, just found
$366
Roundtrip
just found
Select Delta flight, departing Sun, Mar 15 from Alexandria to St. Louis, returning Tue, Mar 24, priced at $366 just found
Delta
Sat, Mar 14 - Thu, Mar 19
AEX
Alexandria
STL
St. Louis
$371 Roundtrip, just found
$371
Roundtrip
just found
Select Delta flight, departing Sat, Mar 14 from Alexandria to St. Louis, returning Thu, Mar 19, priced at $371 just found
Delta
Sun, Mar 15 - Sun, Mar 22
AEX
Alexandria
STL
St. Louis
$376 Roundtrip, just found
$376
Roundtrip
just found
Select Delta flight, departing Sun, Mar 15 from Alexandria to St. Louis, returning Sun, Mar 22, priced at $376 just found
Delta
Fri, Mar 13 - Tue, Mar 24
AEX
Alexandria
STL
St. Louis
$386 Roundtrip, just found
$386
Roundtrip
just found
Select Delta flight, departing Fri, Mar 13 from Alexandria to St. Louis, returning Tue, Mar 24, priced at $386 just found
Delta
Sat, Mar 14 - Sat, Mar 21
AEX
Alexandria
STL
St. Louis
$390 Roundtrip, just found
$390
Roundtrip
just found
Select Delta flight, departing Sat, Mar 14 from Alexandria to St. Louis, returning Sat, Mar 21, priced at $390 just found
Delta
Fri, Mar 13 - Sat, Mar 21
AEX
Alexandria
STL
St. Louis
$391 Roundtrip, just found
$391
Roundtrip
just found
Select Delta flight, departing Fri, Mar 13 from Alexandria to St. Louis, returning Sat, Mar 21, priced at $391 just found
Delta
Fri, Mar 13 - Thu, Mar 19
AEX
Alexandria
STL
St. Louis
$396 Roundtrip, just found
$396
Roundtrip
just found
Select Delta flight, departing Fri, Mar 13 from Alexandria to St. Louis, returning Thu, Mar 19, priced at $396 just found
American Airlines
Thu, Oct 30 - Mon, Nov 3
AEX
Alexandria
STL
St. Louis
$437 Roundtrip, found 6 days ago
$437
Roundtrip
found 6 days ago
Select American Airlines flight, departing Thu, Oct 30 from Alexandria to St. Louis, returning Mon, Nov 3, priced at $437 found 6 days ago

Find the cheapest month to fly from Alexandria (AEX) to St. Louis (STL)

June is typically the cheapest month to fly

From $326 - $646 per traveler.

Frequently asked questions

How much does a flight from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight from $259 or cheap return flight from $356 from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from AEX to STL is March, when there's less demand. Off-peak months are often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from AEX to STL. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL)?
You'll need to book a flight with a layover if you're traveling from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from AEX to STL?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL)?
Choose a flight from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your flight from AEX to STL right before your journey is typically more expensive. However, if there's some wiggle room with your travel times and dates, you could land a cheap last-minute fare.
Is it cheaper to book an AEX to STL flight and hotel package?
You can save money by securing an AEX to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your preferred accommodations and flights, consider other add-ons like car rentals, tours and activities.
Can I cancel or change the date of my flight from Alexandria Intl. Airport (AEX) to Lambert-St. Louis Intl. Airport (STL)?
If you reserved your AEX to STL flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Alexandria Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
$356
Distance
527 mi

Book with confidence

Book with confidence

Alexandria to St. Louis Flights

The cheapest times to fly from Alexandria to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Alexandria to St. Louis are during the month of March. You can find some of the cheapest flights from Alexandria to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Alexandria to St. Louis

Sunday is one of the best days to book for cheap flights from Alexandria to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Alexandria to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Alexandria to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $259 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Alexandria to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Alexandria to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Alexandria to St. Louis Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.