How many flights depart from St. Louis to Austin on average per week?

As of September 2025, there are 13 flights per week flying from St. Louis to Austin. The most common day of the week flights depart is Mon, with 23% of flights taking off on this day.

Which layover airport offers the lowest fares from St. Louis to Austin?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $196.

Which layover airport has the shortest travel time from St. Louis to Austin?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 4h 22m.

What airlines fly to Austin?

Southwest, American Airlines and United Airlines are the top three most popular airlines that fly to Austin from St. Louis according to our data. Southwest is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Austin. Keep in mind that there are 5 different airlines that fly to Austin on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from St. Louis to Austin?

Dallas (DFW) has the shortest average layover time for this route: 1h 01m.

How many flights depart from St. Louis to Austin on average per day?

1 flights are operational daily from St. Louis to Austin as of September 2025. The most popular departure time for this route is 10:00AM, with 41% of flights per day taking off in the afternoon.

Which airport is the most popular layover for flights between St. Louis and Austin?

Dallas (DFW) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

What is the cheapest airline that flies from Lambert-St Louis to Austin Bergstrom?

Southwest, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Austin Bergstrom

When did momondo last update prices for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?

Prices for flights from Lambert-St Louis Airport to Austin Bergstrom Airport refresh daily.

How many operators does momondo search for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?

There are 5 operators available for flights from Lambert-St Louis Airport to Austin Bergstrom Airport as of September 2025.

How old do you have to be to fly from Lambert-St Louis Airport to Austin Bergstrom Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Austin Bergstrom Airport.

What documentation or ID do you need to fly to Austin Bergstrom Airport?

The travel and health documents required for your trip to Austin Bergstrom Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Austin Bergstrom Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$69 Cheap Flights from St. Louis to Austin in 2025/26

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Find the cheapest flights from St. Louis to Austin

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:45 pm - 2:50 pmSTL-AUS

2h 05mnonstop

6:00 am - 8:05 amAUS-STL

2h 05mnonstop

$137Southwest

Find Deal

Wed, Oct 15 - Wed, Oct 22

6:05 pm - 10:40 pmSTL-AUS

4h 35m1 stop

6:00 am - 8:05 amAUS-STL

2h 05mnonstop

$147Southwest

Find Deal

Wed, Oct 15 - Wed, Oct 22

5:00 am - 10:08 amSTL-AUS

5h 08m1 stop

4:18 pm - 10:00 pmAUS-STL

5h 42m1 stop

$151United Airlines

Find Deal

Thu, Oct 9 - Mon, Oct 13

11:58 am - 3:50 pmSTL-AUS

3h 52m1 stop

3:46 pm - 11:32 pmAUS-STL

7h 46m1 stop

$159American Airlines

Find Deal

Thu, Jan 29 - Mon, Feb 2

11:07 am - 5:01 pmSTL-AUS

5h 54m1 stop

5:56 pm - 9:40 amAUS-STL

15h 44m2 stops

$186Frontier

Find Deal

Thu, Nov 6 - Sun, Nov 16

2:38 pm - 10:04 pmSTL-AUS

7h 26m1 stop

9:23 pm - 9:06 amAUS-STL

11h 43m1 stop

$195Frontier

Find Deal

Mon, Sep 29 - Fri, Oct 3

7:30 am - 12:56 pmSTL-AUS

5h 26m1 stop

6:00 pm - 11:10 pmAUS-STL

5h 10m1 stop

$197Delta

Find Deal

Tue, Jan 20 - Wed, Jan 28

4:50 pm - 11:59 pmSTL-AUS

7h 09m1 stop

4:18 pm - 10:00 pmAUS-STL

5h 42m1 stop

$209United Airlines

Find Deal

Fri, Oct 10 - Mon, Oct 13

5:54 pm - 11:02 pmSTL-AUS

5h 08m1 stop

6:00 am - 9:57 amAUS-STL

3h 57m1 stop

$229American Airlines

Find Deal

Mon, Jan 19 - Sun, Jan 25

10:00 am - 4:19 pmSTL-AUS

6h 19m1 stop

6:00 pm - 11:10 pmAUS-STL

5h 10m1 stop

$253Delta

Find Deal

Mon, Feb 9 - Tue, Feb 17

Southwest flights from St. Louis to Austin

Our best Southwest deals on St. Louis to Austin flight tickets

Southwest

Oct 15

STL12:45 pmLambert-St Louis

2h 05m

AUS2:50 pmAustin Bergstrom

Oct 22

AUS6:00 amAustin Bergstrom

2h 05m

STL8:05 amLambert-St Louis

$137

Find similar

Southwest

Oct 15

STL6:05 pmLambert-St Louis

4h 35m

1 stop

AUS10:40 pmAustin Bergstrom

Oct 22

AUS6:00 amAustin Bergstrom

2h 05m

STL8:05 amLambert-St Louis

$147

Find similar

Southwest

Oct 15

STL6:30 amLambert-St Louis

5h 20m

1 stop

AUS11:50 amAustin Bergstrom

Oct 22

AUS8:05 amAustin Bergstrom

6h 15m

1 stop

STL2:20 pmLambert-St Louis

$157

Find similar

Frontier flights from St. Louis to Austin

Our best Frontier deals on St. Louis to Austin flight tickets

Frontier

Sep 26

STL9:35 pmLambert-St Louis

17h 52m

1 stop

AUS3:27 pmAustin Bergstrom

Sep 28

AUS9:23 pmAustin Bergstrom

11h 43m

1 stop

STL9:06 amLambert-St Louis

$170

Find similar

Frontier

Nov 6

STL11:07 amLambert-St Louis

5h 54m

1 stop

AUS5:01 pmAustin Bergstrom

Nov 16

AUS5:56 pmAustin Bergstrom

15h 44m

2 stops

STL9:40 amLambert-St Louis

$186

Find similar

Frontier

Sep 29

STL2:38 pmLambert-St Louis

7h 26m

1 stop

AUS10:04 pmAustin Bergstrom

Oct 3

AUS9:23 pmAustin Bergstrom

11h 43m

1 stop

STL9:06 amLambert-St Louis

$195

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 10/15

12:45 pm-2:50 pm

Nonstop2h 05m

Austin Bergstrom

Wed 10/22

6:00 am-8:05 am

Nonstop2h 05m

$137

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 10/15

6:05 pm-10:40 pm

1 stop4h 35m

Austin Bergstrom

Wed 10/22

6:00 am-8:05 am

Nonstop2h 05m

$147

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 10/9

5:00 am-10:08 am

1 stop5h 08m

Austin Bergstrom

Mon 10/13

4:18 pm-10:00 pm

1 stop5h 42m

$151

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 1/29

11:58 am-3:50 pm

1 stop3h 52m

Austin Bergstrom

Mon 2/2

3:46 pm-11:32 pm

1 stop7h 46m

$159

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 11/6

11:07 am-5:01 pm

1 stop5h 54m

Austin Bergstrom

Sun 11/16

5:56 pm-9:40 am

2 stops15h 44m

$186

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Mon 9/29

2:38 pm-10:04 pm

1 stop7h 26m

Austin Bergstrom

Fri 10/3

9:23 pm-9:06 am

1 stop11h 43m

$195

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Tue 1/20

7:30 am-12:56 pm

1 stop5h 26m

Austin Bergstrom

Wed 1/28

6:00 pm-11:10 pm

1 stop5h 10m

$197

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Fri 10/10

4:50 pm-11:59 pm

1 stop7h 09m

Austin Bergstrom

Mon 10/13

4:18 pm-10:00 pm

1 stop5h 42m

$209

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Mon 1/19

5:54 pm-11:02 pm

1 stop5h 08m

Austin Bergstrom

Sun 1/25

6:00 am-9:57 am

1 stop3h 57m

$229

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Mon 2/9

10:00 am-4:19 pm

1 stop6h 19m

Austin Bergstrom

Tue 2/17

6:00 pm-11:10 pm

1 stop5h 10m

$253

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How to get the cheapest flight ticket from St. Louis to Austin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the cheapest month to fly to Austin?

The cheapest month to fly to Austin from St. Louis is in September. Flight prices, which tend to average around $248, are often lower during this time because this is during the off-season. If you’re not able to fly to Austin in September, then August is your next best option. Flight prices from St. Louis to Austin during August average around $251.

What is the cheapest day to depart on your flight to Austin?

The cheapest day to depart on your flight to Austin is on a Wednesday when prices can be found for as low as $326. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Austin for around $395.

What is the cheapest time of day to depart on your flight to Austin?

In the morning is the cheapest time of day to fly from St. Louis to Austin when you can find flight prices for as low as $344. Flying to Austin in the morning is an ideal time because this is during off-peak travel hours. Flights to Austin are more costly in the afternoon, with an average ticket price of $364. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Lambert-St Louis to Austin Bergstrom flight route?

Fly from Lambert-St Louis to Austin Bergstrom for the best Lambert-St Louis - Austin Bergstrom flight prices

How far in advance should I book a flight to Austin?

You are more likely to see cheaper flights to Austin from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to Austin for around $308 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Austin from St. Louis for as low as $264 on momondo.

What cabin class options are available on Lambert-St Louis to Austin Bergstrom flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Austin Bergstrom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Austin flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Austin.

How have St. Louis to Austin flight prices changed over time?

As of September 2025, prices for St. Louis to Austin flights are approximately 46% more expensive when compared to flights at the same time last year.

When to book flights from St. Louis to Austin

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Austin according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap St. Louis to Austin (STL to AUS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Austin

Best Price Found	$209
Fastest flight time	2h 00m
Direct flights	Mon, Tue, Thu, Fri, Sat and Sun
Airports in Austin	1 airport

The best one-way flight to Austin from St. Louis in the past 72 hours is $209. The best round-trip flight deal from St. Louis to Austin found on momondo in the last 72 hours is $198.

The fastest flight from St. Louis to Austin takes 2h 00m

Direct flights go from St. Louis to Austin on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.

There is 1 airport near Austin: Austin Bergstrom (AUS)

Search flight deals

How far is Lambert-St Louis to Austin Bergstrom by plane?
The straight-line distance from Lambert-St Louis to Austin Bergstrom is 718.3 mi. Flights usually cover this in 2h 00m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?
Prices for flights from Lambert-St Louis Airport to Austin Bergstrom Airport refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?
There are 5 operators available for flights from Lambert-St Louis Airport to Austin Bergstrom Airport as of September 2025.
How old do you have to be to fly from Lambert-St Louis Airport to Austin Bergstrom Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Lambert-St Louis Airport to Austin Bergstrom Airport.
What documentation or ID do you need to fly to Austin Bergstrom Airport?
The travel and health documents required for your trip to Austin Bergstrom Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Austin Bergstrom Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from St. Louis to Austin?
Based on momondo bookings for flights between St. Louis and Austin, the leading plane model is Boeing 737-800 Passenger/BBJ2 (winglets), making up 35.62% of the total bookings. Other popular models include Boeing 737 MAX 8 with 31.25%, Boeing 737-700 Passenger/BBJ1 (winglets) with 19.38%, and Airbus A319 with 3.12%.
What is the most popular airline from St. Louis to Austin?
Based on momondo bookings for flights between St. Louis and Austin, the leading airline is Southwest, making up 74% of the total bookings. Other popular airlines include American Airlines with 17%, United Airlines with 5%, and Delta with 2%.

Best airlines flying from St. Louis to Austin

Compare and see reviews for airlines that fly from St. Louis to Austin with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $98	Free Cancellation	Rating 7.9 7,954 reviews	Search Delta flights
Frontier	PriceFrom $135	Free Cancellation	Rating 5.8 3,172 reviews	Search Frontier flights
American Airlines	PriceFrom $183	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $208	Free Cancellation	Rating 8.0 4,242 reviews	Search Southwest flights
United Airlines	PriceFrom $208	Free Cancellation	Rating 7.4 8,929 reviews	Search United Airlines flights

Southwest Flights From St. Louis to Austin
Southwest flight deals from St. Louis to Austin start from $208 round-trip. Over the 13 Southwest flights for this route in a normal week, average airfare is usually $334 round-trip - but some users have found much cheaper deals with momondo.

Fredericksburg

San Marcos

Wimberley

Round Rock

Georgetown

Canyon Lake

Marble Falls

Cedar Park

Horseshoe Bay

Dripping Springs

Pflugerville

Seguin

Kyle

Bastrop

Buda

Flatonia

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Austin?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Austin from St. Louis.

Can I find flights from St. Louis to Austin with flexible booking policies on momondo?

momondo does allow users to show only those flights to Austin from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Austin?

momondo helps you find the best flight between St. Louis and Austin by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from St. Louis to Austin right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of St. Louis to Austin flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Cheap flights from St. Louis to Austin from $69

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Austin departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from St. Louis to Austin

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Austin?

What is the cheapest day to depart on your flight to Austin?

What is the cheapest time of day to depart on your flight to Austin?

What is the cheapest Lambert-St Louis to Austin Bergstrom flight route?

Fly from Lambert-St Louis to Austin Bergstrom for the best Lambert-St Louis - Austin Bergstrom flight prices

How far in advance should I book a flight to Austin?

What cabin class options are available on Lambert-St Louis to Austin Bergstrom flights?

There is only 1 cabin class available to choose from on Lambert-St Louis to Austin Bergstrom flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on St. Louis to Austin flights?

No. A direct flight is the cheapest option for a flight between St. Louis to Austin.

How have St. Louis to Austin flight prices changed over time?

As of September 2025, prices for St. Louis to Austin flights are approximately 46% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Lambert-St Louis to Austin Bergstrom?

Southwest, United Airlines, and American Airlines are the most popular carriers operating from Lambert-St Louis to Austin Bergstrom

What airlines fly to Austin?

Which airport is the most popular layover for flights between St. Louis and Austin?

Dallas (DFW) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from St. Louis to Austin?

Flights via Atlanta (ATL) offer the lowest average round-trip price of $196.

Which layover airport has the shortest travel time from St. Louis to Austin?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 4h 22m.

Which layover airport has the shortest connection time from St. Louis to Austin?

Dallas (DFW) has the shortest average layover time for this route: 1h 01m.

How many flights depart from St. Louis to Austin on average per day?

1 flights are operational daily from St. Louis to Austin as of September 2025. The most popular departure time for this route is 10:00AM, with 41% of flights per day taking off in the afternoon.

How many flights depart from St. Louis to Austin on average per week?

As of September 2025, there are 13 flights per week flying from St. Louis to Austin. The most common day of the week flights depart is Mon, with 23% of flights taking off on this day.

When to book flights from St. Louis to Austin

Cheap St. Louis to Austin (STL to AUS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Austin

Best Price Found

Fastest flight time

Direct flights

Airports in Austin

How far is Lambert-St Louis to Austin Bergstrom by plane?

When did momondo last update prices for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?

How many operators does momondo search for flights from Lambert-St Louis Airport to Austin Bergstrom Airport?

How old do you have to be to fly from Lambert-St Louis Airport to Austin Bergstrom Airport?

What documentation or ID do you need to fly to Austin Bergstrom Airport?

What is the most popular plane model from St. Louis to Austin?

What is the most popular airline from St. Louis to Austin?

Best airlines flying from St. Louis to Austin

Compare and see reviews for airlines that fly from St. Louis to Austin with momondo

Southwest Flights From St. Louis to Austin

Traveling to a place near Austin?

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Austin?

Can I find flights from St. Louis to Austin with flexible booking policies on momondo?

How can momondo help me find flights from St. Louis to Austin?

I’m not ready to book a flight from St. Louis to Austin right now. Can momondo alert me if prices change?

An easier way to manage your Austin trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Texas