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

View AU$315 flight on Fri, 17 Oct. 2025Opens in a new window

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

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

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

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

October is typically the cheapest month to fly

From AU$241 - AU$754 per traveller.

Graph displaying average flight prices per month

Flight from St. Louis to Austin route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Austin-Bergstrom Intl.
Distance
1153 km
Average flight time
2 hours 14 mins

Your quick guide to flights from St. Louis to Austin

Pick up great flights from St. Louis to Austin

With Expedia, you have your pick of 3 flights a day with 20 airlines covering flights from St. Louis to Austin. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from St. Louis to Austin that take around 2 hours.

Find cheap flights from St. Louis to Austin

From the great flight deals with prices currently ranging from to , you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from St. Louis to Austin around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Austin is normally in .

Reasons to book your flight from St. Louis to Austin with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from St. Louis to Austin across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Austin right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from St. Louis Lambert International Airport to Austin-Bergstrom Intl. Airport (AUS)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price listed for a round-trip flight between St. Louis Lambert International Airport and Austin–Bergstrom International Airport was . Fares this good don't hang around forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to AUS?
Each airline has different terms and conditions. If you decide to cancel your trip, visit our Customer Service Portal.
How do I find cheap flights from STL to Austin–Bergstrom International Airport that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for STL to AUS flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Lambert-St. Louis Intl. Airport (STL) to Austin-Bergstrom Intl. Airport (AUS)?
You won't have time for a movie marathon on this flight — it's just 1 150 kilometres from St. Louis to Austin. Find your way to your seat, get comfortable and you'll be touching down in no time.
Which airlines fly direct from Lambert Field to AUS?
One airline that services the route from Lambert Field to Austin-Bergstrom Intl. Airport (AUS) is Southwest Airlines (WN). It offers 91 flights a month. American Airlines (AA) is another option. It offers 56 flights a month. Between these two airlines, you'll be able to find a good deal from St. Louis to Austin.
Are Lambert-St. Louis Intl. Airport (STL) to AUS flight tickets cheaper when they're purchased at the last minute?
Booking last minute from St. Louis Lambert International Airport to Austin–Bergstrom International Airport can be hit-or-miss. It is possible to find a bargain, but you could also completely miss out! If you'd rather play it safe and start planning early, Expedia compares flight deals up to 12 months in advance. Just keep in mind that not all airlines publish their prices that far in advance. Our advice? Check back often as prices are updated frequently.

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