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 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 52% 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.

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

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

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 50% 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.

$76 Cheap Flights from St. Louis to Austin in 2025

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Find the cheapest flights from St. Louis to Austin

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

10:20 pm - 12:25 amSTL-AUS

2h 05mnonstop

5:05 am - 7:05 amAUS-STL

2h 00mnonstop

$151Southwest

Find Deal

Thu, Oct 9 - Mon, Oct 13

5:52 pm - 10:41 pmSTL-AUS

4h 49m1 stop

2:33 pm - 6:30 pmAUS-STL

3h 57m1 stop

$159American Airlines

Find Deal

Wed, Aug 27 - Tue, Sep 2

4:25 pm - 6:25 pmSTL-AUS

2h 00mnonstop

5:05 am - 7:10 amAUS-STL

2h 05mnonstop

$161Southwest

Find Deal

Tue, Aug 5 - Thu, Aug 14

6:10 am - 10:20 amSTL-AUS

4h 10m1 stop

12:45 pm - 2:55 pmAUS-STL

2h 10mnonstop

$166Southwest

Find Deal

Tue, Aug 5 - Thu, Aug 14

4:36 pm - 10:53 pmSTL-AUS

6h 17m1 stop

5:51 pm - 10:23 pmAUS-STL

4h 32m1 stop

$178American Airlines

Find Deal

Thu, Sep 11 - Sun, Sep 14

5:23 pm - 12:14 amSTL-AUS

6h 51m1 stop

6:20 pm - 11:14 pmAUS-STL

4h 54m1 stop

$197Delta

Find Deal

Fri, Aug 8 - Sun, Aug 17

6:15 pm - 10:59 pmSTL-AUS

4h 44m1 stop

5:00 am - 12:27 pmAUS-STL

7h 27m2 stops

$255United Airlines

Find Deal

Mon, Aug 11 - Tue, Aug 12

5:40 pm - 3:51 pmSTL-AUS

22h 11m1 stop

7:00 am - 9:11 amAUS-STL

26h 11m1 stop

$261Frontier

Find Deal

Wed, Jul 23 - Tue, Jul 29

5:00 am - 10:23 amSTL-AUS

5h 23m1 stop

2:15 pm - 6:53 pmAUS-STL

4h 38m1 stop

$267United Airlines

Find Deal

Sun, Aug 10 - Tue, Aug 12

7:29 pm - 11:34 pmSTL-AUS

28h 05m1 stop

6:00 am - 9:11 amAUS-STL

27h 11m1 stop

$272Frontier

Find Deal

Fri, Jul 25 - Sun, Jul 27

Southwest flights from St. Louis to Austin

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

Southwest

Oct 9

STL10:20 pmLambert-St Louis

2h 05m

AUS12:25 amAustin Bergstrom

Oct 13

AUS5:05 amAustin Bergstrom

2h 00m

STL7:05 amLambert-St Louis

$151

Find similar

Southwest

Aug 5

STL4:25 pmLambert-St Louis

2h 00m

AUS6:25 pmAustin Bergstrom

Aug 14

AUS5:05 amAustin Bergstrom

2h 05m

STL7:10 amLambert-St Louis

$161

Find similar

Southwest

Aug 5

STL6:10 amLambert-St Louis

4h 10m

1 stop

AUS10:20 amAustin Bergstrom

Aug 14

AUS12:45 pmAustin Bergstrom

2h 10m

STL2:55 pmLambert-St Louis

$166

Find similar

Frontier flights from St. Louis to Austin

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

Frontier

Jul 23

STL5:40 pmLambert-St Louis

22h 11m

1 stop

AUS3:51 pmAustin Bergstrom

Jul 29

AUS7:00 amAustin Bergstrom

26h 11m

1 stop

STL9:11 amLambert-St Louis

$261

Find similar

Frontier

Jul 23

STL5:40 pmLambert-St Louis

22h 11m

1 stop

AUS3:51 pmAustin Bergstrom

Jul 31

AUS1:59 pmAustin Bergstrom

23h 43m

1 stop

STL1:42 pmLambert-St Louis

$271

Find similar

Frontier

Jul 25

STL7:29 pmLambert-St Louis

28h 05m

1 stop

AUS11:34 pmAustin Bergstrom

Jul 27

AUS6:00 amAustin Bergstrom

27h 11m

1 stop

STL9:11 amLambert-St Louis

$272

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 $284, 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 May is your next best option. Flight prices from St. Louis to Austin during May average around $288.

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 $373.

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 at noon, with an average ticket price of $360. Departure times at noon 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 $312 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 $263 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 3% 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	$76
Fastest flight time	2h 00m
Direct flights	Every day
Airports in Austin	1 airport

The best one-way flight to Austin from St. Louis in the past 72 hours is $76. The best round-trip flight deal from St. Louis to Austin found on momondo in the last 72 hours is $151.

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

Direct flights go from St. Louis to Austin every day.

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 43.64% of the total bookings. Other popular models include Boeing 737-700 Passenger/BBJ1 (winglets) with 30.93%, Boeing 737 MAX 8 with 16.53%, and Airbus A319 with 2.12%.
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 70% of the total bookings. Other popular airlines include American Airlines with 20%, 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 7,952 reviews	Search Delta flights
Frontier	PriceFrom $141	Free Cancellation	Rating 5.9 3,271 reviews	Search Frontier flights
American Airlines	PriceFrom $210	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $216	Free Cancellation	Rating 8.0 4,250 reviews	Search Southwest flights
United Airlines	PriceFrom $244	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights

Southwest Flights From St. Louis to Austin
Southwest flight deals from St. Louis to Austin start from $216 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.

An easier way to manage your Austin trip

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Flights to Atlantafrom $49

Flights to Seattlefrom $82

Fly to other destinations from St. Louis

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Cheap flights from St. Louis to Austin from $76

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 10/8. 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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Southwest flights from St. Louis to Austin

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

Frontier flights from St. Louis to Austin

Our best Frontier 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 3% 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, Spirit Airlines, and American 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 50% 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