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

As of July 2025, there are 22 flights per week flying from St. Louis to Austin. The most common day of the week flights depart is Tue, with 23% of flights taking off on this day.

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

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

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 54% 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.

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

3 flights are operational daily from St. Louis to Austin as of July 2025. The most popular departure time for this route is 10:00AM, with 52% of flights per day taking off at noon.

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 July 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.

$79 Cheap Flights from St. Louis to Austin in 2025

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Find the cheapest flights from St. Louis to Austin

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Cheap round-trip flights

1:50 pm - 3:50 pmSTL-AUS

2h 00mnonstop

4:35 pm - 6:40 pmAUS-STL

2h 05mnonstop

$157Southwest

Find Deal

jue., ago. 14 - jue., ago. 21

10:05 am - 12:05 pmSTL-AUS

2h 00mnonstop

8:45 am - 1:05 pmAUS-STL

4h 20m1 stop

$167Southwest

Find Deal

jue., ago. 14 - lun., ago. 18

9:23 am - 1:43 pmSTL-AUS

4h 20m1 stop

6:53 pm - 11:14 pmAUS-STL

4h 21m1 stop

$177American Airlines

Find Deal

mié., ago. 27 - mar., sep. 2

6:00 am - 12:23 pmSTL-AUS

6h 23m1 stop

5:00 pm - 10:02 pmAUS-STL

5h 02m1 stop

$187Delta

Find Deal

sáb., ago. 9 - sáb., ago. 16

8:00 am - 3:22 pmSTL-AUS

7h 22m2 stops

5:55 pm - 10:16 pmAUS-STL

4h 21m1 stop

$194United Airlines

Find Deal

mié., ago. 13 - mié., ago. 20

9:43 am - 2:25 pmSTL-AUS

4h 42m1 stop

5:00 am - 9:20 amAUS-STL

4h 20m1 stop

$208American Airlines

Find Deal

mié., oct. 8 - dom., oct. 12

1:26 pm - 6:53 pmSTL-AUS

5h 27m1 stop

5:00 pm - 11:14 pmAUS-STL

6h 14m1 stop

$213Delta

Find Deal

mié., ago. 13 - vie., ago. 15

8:00 am - 3:22 pmSTL-AUS

7h 22m2 stops

2:55 pm - 8:45 pmAUS-STL

5h 50m1 stop

$264United Airlines

Find Deal

mié., ago. 13 - sáb., ago. 16

11:02 am - 5:01 pmSTL-AUS

5h 59m1 stop

9:53 pm - 9:07 amAUS-STL

11h 14m1 stop

$274Frontier

Find Deal

vie., nov. 7 - lun., nov. 10

2:19 pm - 1:12 pmSTL-AUS

22h 53m1 stop

6:00 am - 9:07 amAUS-STL

27h 07m1 stop

$277Frontier

Find Deal

jue., oct. 16 - dom., oct. 19

Delta flights from St. Louis to Austin

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

Delta

Aug 9

STL6:00 amLambert-St Louis

6h 23m

1 stop

AUS12:23 pmAustin Bergstrom

Aug 16

AUS5:00 pmAustin Bergstrom

5h 02m

1 stop

STL10:02 pmLambert-St Louis

$187

Find similar

Delta

Aug 13

STL1:26 pmLambert-St Louis

5h 27m

1 stop

AUS6:53 pmAustin Bergstrom

Aug 15

AUS5:00 pmAustin Bergstrom

6h 14m

1 stop

STL11:14 pmLambert-St Louis

$213

Find similar

Delta

Aug 11

STL6:00 amLambert-St Louis

7h 47m

1 stop

AUS1:47 pmAustin Bergstrom

Aug 14

AUS6:40 amAustin Bergstrom

5h 51m

1 stop

STL12:31 pmLambert-St Louis

$238

Find similar

Southwest flights from St. Louis to Austin

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

Southwest

Aug 14

STL1:50 pmLambert-St Louis

2h 00m

AUS3:50 pmAustin Bergstrom

Aug 21

AUS4:35 pmAustin Bergstrom

2h 05m

STL6:40 pmLambert-St Louis

$157

Find similar

Southwest

Aug 14

STL10:05 amLambert-St Louis

2h 00m

AUS12:05 pmAustin Bergstrom

Aug 18

AUS8:45 amAustin Bergstrom

4h 20m

1 stop

STL1:05 pmLambert-St Louis

$167

Find similar

Southwest

Aug 14

STL9:50 amLambert-St Louis

5h 10m

2 stops

AUS3:00 pmAustin Bergstrom

Aug 21

AUS12:45 pmAustin Bergstrom

2h 10m

STL2:55 pmLambert-St Louis

$172

Find similar

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

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 $276, 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 $280.

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 Tuesday when prices can be found for as low as $292. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from St. Louis to Austin for around $372.

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 $348. 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 $360. 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 $316 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 $274 on momondo.

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

There are 1 cabin classes 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?

You could potentially save up to 29% on your flight if you consider stops on a St. Louis to Austin flight.

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

As of July 2025, prices for St. Louis to Austin flights are approximately 65% 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	$79
Fastest flight time	2h 00m
Direct flights	Mon, Tue, Wed, Thu, Fri and Sat
Airports in Austin	1 airport

The best one-way flight to Austin from St. Louis in the past 72 hours is $79. The best round-trip flight deal from St. Louis to Austin found on momondo in the last 72 hours is $157.

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

Direct flights go from St. Louis to Austin on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday. The only airline offering direct flights is Southwest.

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 July 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 44.05% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 28.63%, Boeing 737 MAX 8 with 18.06%, and Airbus A319 with 2.20%.
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 71% of the total bookings. Other popular airlines include American Airlines with 19%, United Airlines with 4%, and Frontier with 3%.

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 8.0 7,958 reviews	Search Delta flights
Frontier	PriceFrom $141	Free Cancellation	Rating 5.9 3,251 reviews	Search Frontier flights
American Airlines	PriceFrom $210	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $215	Free Cancellation	Rating 8.0 4,241 reviews	Search Southwest flights
United Airlines	PriceFrom $244	Free Cancellation	Rating 7.4 8,864 reviews	Search United Airlines flights

Southwest Flights From St. Louis to Austin
Southwest flight deals from St. Louis to Austin start from $215 round-trip. Over the 22 Southwest flights for this route in a normal week, average airfare is usually $336 round-trip - but some users have found much cheaper deals with momondo.

Fredericksburg

San Marcos

Round Rock

Wimberley

Georgetown

Canyon Lake

Marble Falls

Dripping Springs

Cedar Park

Horseshoe Bay

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 $79

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 10/15. 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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Delta flights from St. Louis to Austin

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

Southwest flights from St. Louis to Austin

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

See travel insights to Austin from

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 are 1 cabin classes 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?

You could potentially save up to 29% on your flight if you consider stops on a St. Louis to Austin flight.

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

As of July 2025, prices for St. Louis to Austin flights are approximately 65% 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, American Airlines, and United Airlines are the most popular carriers operating from Lambert-St Louis to Austin Bergstrom

What airlines fly to Austin?

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

3 flights are operational daily from St. Louis to Austin as of July 2025. The most popular departure time for this route is 10:00AM, with 52% of flights per day taking off at noon.

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

As of July 2025, there are 22 flights per week flying from St. Louis to Austin. The most common day of the week flights depart is Tue, 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