Cheap Flights from St Louis to Austin-Bergstrom from $237

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Flight deals from St Louis to Austin-Bergstrom

Looking for a cheap last-minute deal or the best return flight from St Louis Airport to Austin-Bergstrom Airport? If you want to travel next month, return fares start from $237. Find the lowest prices on one-way and return tickets right here.

Austin.$237 per passenger.Departing Sun, 17 May, returning Fri, 22 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 17 May, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Fri, 22 May, arriving in St Louis.Price includes taxes and charges.From $237, select.

Austin.$239 per passenger.Departing Thu, 30 Apr, returning Sun, 3 May.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 30 Apr, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Sun, 3 May, arriving in St Louis.Price includes taxes and charges.From $239, select.

Austin.$305 per passenger.Departing Fri, 5 Jun, returning Mon, 8 Jun.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Fri, 5 Jun, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Mon, 8 Jun, arriving in St Louis.Price includes taxes and charges.From $305, select.

Austin.$343 per passenger.Departing Sun, 19 Apr, returning Sun, 26 Apr.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 19 Apr, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Sun, 26 Apr, arriving in St Louis.Price includes taxes and charges.From $343, select.

Austin.$363 per passenger.Departing Wed, 27 May, returning Wed, 3 Jun.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 27 May, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Wed, 3 Jun, arriving in St Louis.Price includes taxes and charges.From $363, select.

Austin.$363 per passenger.Departing Tue, 19 May, returning Sat, 23 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Tue, 19 May, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Sat, 23 May, arriving in St Louis.Price includes taxes and charges.From $363, select.

Austin.$364 per passenger.Departing Wed, 29 Apr, returning Mon, 4 May.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Wed, 29 Apr, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Mon, 4 May, arriving in St Louis.Price includes taxes and charges.From $364, select.

Austin.$389 per passenger.Departing Sun, 12 Jul, returning Fri, 24 Jul.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Sun, 12 Jul, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Fri, 24 Jul, arriving in St Louis.Price includes taxes and charges.From $389, select.

Austin.$392 per passenger.Departing Tue, 25 Aug, returning Fri, 28 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Tue, 25 Aug, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Fri, 28 Aug, arriving in St Louis.Price includes taxes and charges.From $392, select.

Austin.$408 per passenger.Departing Tue, 1 Sep, returning Tue, 8 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Tue, 1 Sep, arriving in Austin-Bergstrom.Inbound indirect flight with Delta, departs from Austin-Bergstrom on Tue, 8 Sep, arriving in St Louis.Price includes taxes and charges.From $408, select.

Austin.$426 per passenger.Departing Thu, 30 Jul, returning Sun, 2 Aug.Return flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from St Louis on Thu, 30 Jul, arriving in Austin-Bergstrom.Inbound indirect flight with Frontier Airlines, departs from Austin-Bergstrom on Sun, 2 Aug, arriving in St Louis.Price includes taxes and charges.From $426, select.

Austin.$457 per passenger.Departing Mon, 9 Nov, returning Thu, 12 Nov.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Mon, 9 Nov, arriving in Austin-Bergstrom.Inbound indirect flight with Delta, departs from Austin-Bergstrom on Thu, 12 Nov, arriving in St Louis.Price includes taxes and charges.From $457, select.

Austin.$465 per passenger.Departing Fri, 2 Oct, returning Wed, 7 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from St Louis on Fri, 2 Oct, arriving in Austin-Bergstrom.Inbound indirect flight with Delta, departs from Austin-Bergstrom on Wed, 7 Oct, arriving in St Louis.Price includes taxes and charges.From $465, select.

Austin.$476 per passenger.Departing Fri, 26 Jun, returning Sun, 28 Jun.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Fri, 26 Jun, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Sun, 28 Jun, arriving in St Louis.Price includes taxes and charges.From $476, select.

Austin.$513 per passenger.Departing Fri, 28 Aug, returning Sun, 30 Aug.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Fri, 28 Aug, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Sun, 30 Aug, arriving in St Louis.Price includes taxes and charges.From $513, select.

Austin.$879 per passenger.Departing Fri, 24 Apr, returning Mon, 27 Apr.Return flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from St Louis on Fri, 24 Apr, arriving in Austin-Bergstrom.Inbound direct flight with Southwest Airlines departs from Austin-Bergstrom on Mon, 27 Apr, arriving in St Louis.Price includes taxes and charges.From $879, select.

Find the cheapest month to fly from St Louis to Austin-Bergstrom

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like St Louis to Austin-Bergstrom flights are currently cheapest in May.

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Direct flights from St Louis to Austin-Bergstrom

St Louis to Austin-Bergstrom: Alternative routes

Compare routes from St Louis to Austin below. You may find an airport to fly into that's cheaper, faster, or easier than Austin-Bergstrom.

Austin-Bergstrom

10km from central Austin

ClosestCheapest

from $237

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Killeen Gray AAF

88km from central Austin

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St Louis to Austin: Flight information

The things to know before you go.

Cheapest flight found	$237
Cheapest month to fly	May
Average flight time	2 hrs, 5 mins
Most popular airline	Southwest Airlines
Average flights per week	20

Finding cheap flights from St Louis to Austin-Bergstrom: Frequently asked questions

How much are return flights from St Louis to Austin-Bergstrom?

The best price we found for a return flight from St Louis to Austin-Bergstrom is $237. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from St Louis to Austin-Bergstrom?

2 hours and 5 minutes is the average flight time from St Louis to Austin-Bergstrom.

Which airlines fly direct from St Louis to Austin-Bergstrom?

Southwest Airlines flies direct from St Louis to Austin-Bergstrom.

How many flights are there a week from St Louis to Austin-Bergstrom?

As of April 2026, there are 20 flights per week flying from St Louis to Austin-Bergstrom.

When is the cheapest time to fly from St Louis to Austin-Bergstrom?

The cheapest month to fly from St Louis to Austin-Bergstrom is usually May.

Which upcoming date is cheapest to fly from St Louis Airport to Austin-Bergstrom Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from St Louis Airport to Austin-Bergstrom Airport on Sunday, 17 May 2026.

Can I get a direct flight from St Louis Airport to Austin-Bergstrom Airport?

Yes – the average flight time is 2 hours and 5 minutes.

How can I find the best flight deal to Austin-Bergstrom?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Austin-Bergstrom but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to Austin?

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Austin is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly from St Louis Airport to Austin-Bergstrom with?

Currently, Frontier Airlines and Southwest Airlines offer the cheapest flight tickets to Austin-Bergstrom.

Travelling from Lambert-St. Louis International Airport (STL) to Austin-Bergstrom International Airport (AUS): what you need to know

The average time for a direct flight from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport is 2 hours 5 minutes.
Austin's timezone is UTC-5, which is the same as St Louis.
Flights from STL to AUS start at 06:30 — the earliest with Southwest Airlines. The last service of the day is at 22:45 with Southwest Airlines. In total, you can take your pick of 13 weekly Lambert-St. Louis International Airport to Austin-Bergstrom International Airport flights.
For a stress-free journey, arrive at the airport two hours ahead of international flights and one hour before domestic departures. This way, you'll have plenty of time to catch your STL to AUS flight.
You'll likely experience longer lines in popular months such as July. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a good idea.
Southwest Airlines has direct flights from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport. Book with this popular airline, then get ready to discover the sights in Austin — and maybe even more of United States if time allows.
The airline with the highest passenger demand on this route is Southwest Airlines.
With a reliable 82.0% of services landing on schedule, Southwest Airlines has the best on-time performance for STL to AUS flights.
Think about adding a stopover when booking your ticket from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport. Just uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Here's where you can stop between STL and AUS:
- Tulsa International Airport
- Dallas Love Field Airport
- Kansas City International Airport

How to find the cheapest flights from Lambert-St. Louis International Airport (STL) to Austin-Bergstrom International Airport (AUS)

$120 is currently the best price for a one-way Lambert-St. Louis International Airport to Austin-Bergstrom International Airport flight. A return flight starts from $237. These prices may change depending on demand.
To pick up cheap tickets from STL to AUS, reserve your trip six months before your departure date.
Organise your trip for May. That's the cheapest month for flights from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport. If you have flexibility with your dates, use the 'Whole month' tool to find the lowest airfare across each month.
Cut down on the time spent looking for cheap flights from STL to AUS by setting up a Price Alert. We'll send you an email or notification on the app when a lower fare becomes available.
Tailor your trip using filters. Pick your departure and arrival times, airlines and total journey duration. You can also sort results by 'Fastest,' 'Cheapest' or 'Best' flights from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport.

Handy information about Lambert-St. Louis International Airport (STL)

STL's address is 10701 Lambert International Blvd..
78.04% of flights leaving from Lambert-St. Louis International Airport make it to their destination on time.
Central St Louis to Lambert-St. Louis International Airport is around 26 kilometres. Depending on traffic, it'll take you about 20 minutes to get there if you're ride-sharing, catching a cab or driving.
Planning to take public transport? Expect a trip time of around 35 minutes.
Booked an early flight from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport? Avoid the last-minute rush to the airport (and catch some extra z's) by choosing one of these stays near STL:

Arriving at Austin-Bergstrom International Airport (AUS)

If you're landing on a late Lambert-St. Louis International Airport to Austin-Bergstrom International Airport flight, few things top the convenience of being close to the terminal. Pick up your bags from the carousel and then be resting soon after at one of these hotels near AUS:
Say yes to new adventures by picking up an Austin-Bergstrom International Airport rental car. Grab a set of wheels from Thrifty, Dollar or Easirent and explore beyond Austin's usual tourist stops.
Booking your ride from Austin-Bergstrom International Airport about four weeks in advance increases your chances of getting a good deal.

Getting from Austin-Bergstrom International Airport (AUS) to central Austin

The address for AUS is 3600 Presidential Blvd.
Austin-Bergstrom International Airport is roughly 19 kilometres from the centre of Austin. Driving there takes about 25 minutes.
Getting to the centre on public transport will take you around 3 hours 25 minutes.

When to fly to Austin-Bergstrom International Airport (AUS)

It's time to choose your trip dates for your flight from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport. July is the busiest month to visit Austin. If you're after a more low-key vibe, go in April.
Book your flight from Lambert-St. Louis International Airport to Austin-Bergstrom International Airport for August if you want to visit Austin during its warmest month. You can expect temperatures of between 23ºC and 41ºC.
If you want cooler conditions, search for a cheap ticket from STL to AUS in January. Temperatures average between 3ºC and 19ºC then.

Explore more of United States

You've visited Austin, now it's time to discover more of United States. Journey about 241 kilometres east to Houston to tick off its popular sights. From The Houston Museum of Natural Science to The Museum of Fine Arts, Houston, Beck Building and Hermann Park, there's plenty to keep you on the go.
San Antonio is another favourite destination in United States and is around 121 kilometres south-west of Austin. No trip is complete without seeing The San Antonio River Walk, San Antonio Missions National Historical Park and San Fernando Cathedral.