CA $339 Cheap Flights from Austin (AUS) to St. Louis (STL)

View CA $339 flight on Thu, Aug. 14, 2025Opens in a new window

Popular airlines from Austin-Bergstrom International Airport (AUS) to Lambert-St. Louis International Airport (STL)

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Cheap flights from Austin (AUS) to St. Louis (STL)

Prices were available within the past 7 days and start at CA $339 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Austin (AUS) to St. Louis (STL)

September is typically the cheapest month to fly

From CA $208 - CA $802 per traveller.

Graph displaying average flight prices per month

Flight from Austin to St. Louis (AUS - STL) route information
Origin airport
Austin-Bergstrom Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
1153 km
Average flight time
2 hours 23 mins

Austin to St. Louis Flights

The easy way to book your flights from Austin to St. Louis 

With Expedia, it’s simple to find and book flights to St. Louis from Austin whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 16 airlines that cover this route. There are Southwest Airlines nonstop flights to Lambert-St. Louis Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Austin to St. Louis today, tomorrow, or this week.  

 

Save dollars with cheap flights from Austin-Bergstrom Intl., AUS to Lambert-St. Louis Intl., STL 

Sort your search results by price to find great deals on your flight from Austin to St. Louis—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to St. Louis from Austin currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to St. Louis  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to St. Louis from Austin 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to St. Louis with Expedia today.

Frequently asked questions

How much is a flight from AUS to Lambert-St. Louis Intl. Airport (STL)?
Pack your bags, because round-trip flights between Austin-Bergstrom Intl. Airport (AUS) and Lambert Field start from . That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to get the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Austin-Bergstrom Intl. Airport (AUS) to Lambert-St. Louis Intl. Airport (STL)?
The majority of flights can be conveniently cancelled online, but whether or not you incur a fee differs between airlines. If you do have to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Austin-Bergstrom Intl. Airport (AUS) to STL that have flexible change policies?
Select our "No change fees" filter to find flexible ticketing options for your flight from Austin–Bergstrom International Airport to Lambert Field. This allows you to snag a fantastic price in advance and still have the freedom to reschedule without any additional fees. You'll just need to pay the difference in fare.
How many hours is the flight from Austin–Bergstrom International Airport to STL?
With the average flight time between AUS and Lambert Field an easy 5 hours and 23 minutes, you'll be wandering around St. Louis in no time.
How far is the flight from Austin-Bergstrom Intl. Airport (AUS) to Lambert Field?
The distance from Austin–Bergstrom International Airport (AUS) to Lambert-St. Louis Intl. Airport (STL) (STL) is 1,150 kilometres. You'll be stepping off the plane and collecting your suitcase from the carousel in the blink of an eye.
Which airlines fly direct from Austin–Bergstrom International Airport to STL?
Check out the airfares with Southwest Airlines (WN) if you want to fly directly from Austin-Bergstrom Intl. Airport (AUS) to Lambert Field. This carrier offers 56 flights monthly, so you're sure to find one that fits your schedule.
Are Austin–Bergstrom International Airport to Lambert Field flight tickets cheaper when they're purchased at the last minute?
Fares from AUS to Lambert-St. Louis Intl. Airport (STL) are available up to 12 months prior to departure on Expedia. And although you may occasionally nab a fantastic last-minute deal, it's never something you can count on. Also, booking your flights well in advance means you'll have more options — and you can avoid being wedged in the dreaded middle seat! We frequently update our fares to bring you the best bargains, so keep checking in for all the latest specials.

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