How popular is this Austin to St. Louis flight route?

This flight path from Austin Bergstrom to Lambert-St Louis was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

How long is the flight from Austin to St. Louis?

There are many flights that can get you from Austin to St. Louis in 2h 05m. Fly via Delta or Southwest to get the fastest option. The distance between Austin and St. Louis is about 722 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Austin to St. Louis round-trip?

Our cheapest airline available from Austin to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $195 on this airline. Additional options worth looking into are Southwest and American Airlines, starting at $198 and $242 round-trip. You may be able to fly from Austin to St. Louis for 39% less than the average price by searching for these airlines.

What are the cheapest airlines to fly from Austin to St. Louis one-way?

$98 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $100 and $104, respectively.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the cheapest flights from Austin to St. Louis?

While on average a flight from Austin to St. Louis is generally $334, our data shows the cheapest flight currently is $90. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $178 for that flight.

What are the most popular airlines that fly from Austin to St. Louis?

Consider Southwest, American Airlines or Frontier when booking your flight. These represent the most popular airlines when flying from Austin to St. Louis.

Most accurate provider : When it comes to deals on Austin-St. Louis flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Austin-St. Louis flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Austin-St. Louis flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Austin-St. Louis flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

What airports do I use to fly from Austin to St. Louis?

If you book a flight from Austin to St. Louis, you will be flying from Austin Bergstrom to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Austin Bergstrom (AUS) take 2h 00m for a nonstop flight. There are 2 flights from Austin Bergstrom to St. Louis per day from 3 airlines.

Can I find deals for flights from Austin to St. Louis that include hotel bookings?

Yes. In addition to deals on Austin to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Austin to St. Louis?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to St. Louis.

Can I find deals for business class flights from Austin to St. Louis?

Yes. Cheapflights offers flight deals from Austin to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$57+ Flights from Austin to St. Louis

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Find cheap flights from Austin to St. Louis with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheapflights Tip: The best prices from Austin Bergstrom to Lambert-St Louis are usually found in October or January, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Austin to St. Louis

Cheapest flights from Austin to St. Louis
Explore the most affordable flight options available from Austin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Fri 12/192:54 pmAUS - STL

1 stop19h 08mFrontier

Mon 12/224:27 pmSTL - AUS

1 stop15h 41mFrontier

Deal found 12/10

$264

Mon 12/295:50 pmAUS - STL

Nonstop2h 05mSouthwest

Fri 1/210:45 pmSTL - AUS

Nonstop2h 10mSouthwest

Deal found 12/8

$269

Fri 12/265:20 amAUS - STL

1 stop7h 01mDelta

Wed 1/147:10 amSTL - AUS

1 stop6h 47mDelta

Deal found 12/10

$272

Thu 12/1110:22 pmAUS - STL

1 stop13h 50mFrontier

Mon 12/1512:07 pmSTL - AUS

1 stop7h 53mFrontier

Deal found 12/9

$293

Sun 12/286:45 amAUS - STL

1 stop7h 41mUnited Airlines

Sat 1/36:30 amSTL - AUS

1 stop5h 33mUnited Airlines

Deal found 12/8

$303

Tue 12/236:45 amAUS - STL

1 stop27h 17mFrontier

Mon 1/510:10 pmSTL - AUS

1 stop17h 38mFrontier

Deal found 12/8

$305

Fri 12/126:55 amAUS - STL

1 stop27h 19mFrontier

Sat 12/137:43 pmSTL - AUS

1 stop28h 31mFrontier

Deal found 12/8

$308

Wed 12/2412:55 pmAUS - STL

1 stop6h 35mSouthwest

Wed 12/318:25 pmSTL - AUS

Nonstop2h 10mSouthwest

Deal found 12/11

$317

Sun 12/286:05 amAUS - STL

1 stop5h 20mSouthwest

Fri 1/210:40 amSTL - AUS

2 stops5h 55mSouthwest

Deal found 12/8

$322

Tue 12/235:10 amAUS - STL

1 stop5h 30mSouthwest

Mon 1/52:55 pmSTL - AUS

Nonstop2h 10mSouthwest

Deal found 12/9

$323

Best flights from Austin to St. Louis
Discover carefully curated flight deals from Austin to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

Wed 1/75:30 amAUS - STL

1 stop5h 35mDelta

Wed 1/146:00 amSTL - AUS

1 stop7h 57mDelta

Deal found 12/10

$207

Thu 1/153:50 pmAUS - STL

Nonstop2h 05mSouthwest

Tue 1/205:55 pmSTL - AUS

1 stop4h 55mSouthwest

Deal found 12/8

$217

Thu 1/155:30 amAUS - STL

1 stop3h 52mUnited Airlines

Thu 1/2211:20 amSTL - AUS

2 stops8h 10mUnited Airlines

Deal found 12/10

$232

Thu 1/155:10 amAUS - STL

Nonstop2h 00mSouthwest

Thu 1/227:55 pmSTL - AUS

Nonstop2h 15mSouthwest

Deal found 12/10

$217

Wed 1/76:25 pmAUS - STL

1 stop5h 14mDelta

Mon 1/126:00 amSTL - AUS

1 stop7h 57mDelta

Deal found 12/10

$217

Thu 1/223:00 pmAUS - STL

Nonstop2h 05mSouthwest

Mon 1/2610:25 amSTL - AUS

Nonstop2h 20mSouthwest

Deal found 12/11

$217

Thu 1/85:30 amAUS - STL

1 stop5h 32mDelta

Mon 1/125:25 pmSTL - AUS

1 stop5h 30mDelta

Deal found 12/10

$227

Fri 1/25:50 pmAUS - STL

Nonstop2h 05mSouthwest

Tue 1/610:25 amSTL - AUS

Nonstop2h 20mSouthwest

Deal found 12/9

$233

Sun 1/185:35 amAUS - STL

Nonstop2h 00mSouthwest

Mon 1/198:45 pmSTL - AUS

Nonstop2h 15mSouthwest

Deal found 12/10

$233

Sun 1/44:10 pmAUS - STL

1 stop3h 45mSouthwest

Tue 1/67:55 pmSTL - AUS

Nonstop2h 15mSouthwest

Deal found 12/8

$233

Last-minute flights from Austin to St. Louis
Discover last-minute flight deals from Austin to St. Louis. Data last updated December 12, 2025 and is based on user searches.

Wed 1/75:30 amAUS - STL

1 stop5h 35mDelta

Wed 1/146:00 amSTL - AUS

1 stop7h 57mDelta

Deal found 12/10

$207

Sun 1/118:13 pmAUS - STL

2 stops13h 49mMultiple Airlines

Tue 1/135:11 pmSTL - AUS

1 stop22h 53mMultiple Airlines

Deal found 12/10

$200

Thu 1/157:19 pmAUS - STL

1 stop12h 35mFrontier

Sun 1/1810:06 amSTL - AUS

1 stop8h 28mFrontier

Deal found 12/10

$185

Thu 1/157:19 pmAUS - STL

1 stop12h 35mMultiple Airlines

Tue 1/205:42 pmSTL - AUS

1 stop22h 22mMultiple Airlines

Deal found 12/8

$210

Sun 1/181:03 pmAUS - STL

1 stop8h 11mFrontier

Mon 1/198:39 amSTL - AUS

1 stop9h 50mFrontier

Deal found 12/10

$216

Thu 1/223:16 pmAUS - STL

1 stop27h 28mFrontier

Mon 1/261:40 pmSTL - AUS

1 stop10h 36mFrontier

Deal found 12/11

$129

Thu 1/2211:16 amAUS - STL

1 stop23h 07mMultiple Airlines

Mon 1/265:42 pmSTL - AUS

2 stops27h 53mMultiple Airlines

Deal found 12/11

$163

Fri 1/238:22 pmAUS - STL

1 stop18h 24mFrontier

Mon 1/261:40 pmSTL - AUS

1 stop10h 36mFrontier

Deal found 12/9

$171

Thu 1/2911:16 amAUS - STL

1 stop23h 07mFrontier

Fri 1/301:03 pmSTL - AUS

1 stop7h 03mFrontier

Deal found 12/11

$128

Thu 1/2911:16 amAUS - STL

1 stop23h 07mMultiple Airlines

Fri 1/308:22 pmSTL - AUS

2 stops14h 12mMultiple Airlines

Deal found 12/11

$180

One-way flights from Austin to St. Louis
Search for one-way flight options from Austin to St. Louis. Find affordable one-way fares based on user searches. Data last updated December 12, 2025.

Tue 2/106:45 amAUS - STL

1 stop27h 17mFrontier

Deal found 12/8

$57

Mon 2/96:55 amAUS - STL

1 stop5h 55mFrontier

Deal found 12/11

$64

Tue 1/1310:55 amAUS - STL

1 stop27h 53mFrontier

Deal found 12/11

$68

Sat 2/711:16 amAUS - STL

1 stop12h 17mFrontier

Deal found 12/11

$70

Thu 1/84:59 pmAUS - STL

1 stop14h 51mMultiple Airlines

Deal found 12/9

$74

Tue 1/137:25 amAUS - STL

2 stops23h 26mMultiple Airlines

Deal found 12/11

$75

Mon 1/125:52 pmAUS - STL

2 stops36h 59mFrontier

Deal found 12/10

$78

Fri 2/68:22 pmAUS - STL

1 stop18h 24mFrontier

Deal found 12/8

$79

Sun 1/115:42 pmAUS - STL

1 stop14h 23mFrontier

Deal found 12/11

$80

Sat 2/146:45 amAUS - STL

1 stop7h 11mFrontier

Deal found 12/10

$83

Fri 1/93:01 pmAUS - STL

1 stop19h 01mFrontier

Deal found 12/11

$85

Find flight deals from Austin to St. Louis

Most accurate provider	CheapOair 3 stars
Most trusted provider	CheapOair 3 stars
Round-trip from	$128 (Expedia)
One-way from	$57 (Kiwi.com)
Popular in	March
Cheapest in	October
Average price	$361
Good round-trip deal	$292 or less
Good one-way deal	$186 or less

Provider with most accurate pricing for Austin Bergstrom-Lambert-St Louis flight deals.

Search Deals

Provider most trusted by Cheapflights users for Austin Bergstrom-Lambert-St Louis flights.

Search Deals

From Austin Bergstrom to Lambert-St Louis

Search Deals

One-way flight from Austin Bergstrom to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 5% potential increase in price ($18 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Price to beat on a round-trip flight from Austin Bergstrom to Lambert-St Louis.

Search Deals

Price to beat on a one-way flight from Austin Bergstrom to Lambert-St Louis.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 1/7

5:30 am-11:05 am

1 stop5h 35m

Lambert-St Louis

Wed 1/14

6:00 am-1:57 pm

1 stop7h 57m

$207

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/15

3:50 pm-5:55 pm

Nonstop2h 05m

Lambert-St Louis

Tue 1/20

5:55 pm-10:50 pm

1 stop4h 55m

$217

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/15

5:10 am-7:10 am

Nonstop2h 00m

Lambert-St Louis

Thu 1/22

7:55 pm-10:10 pm

Nonstop2h 15m

$217

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 1/7

6:25 pm-11:39 pm

1 stop5h 14m

Lambert-St Louis

Mon 1/12

6:00 am-1:57 pm

1 stop7h 57m

$217

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/22

3:00 pm-5:05 pm

Nonstop2h 05m

Lambert-St Louis

Mon 1/26

10:25 am-12:45 pm

Nonstop2h 20m

$217

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/8

5:30 am-11:02 am

1 stop5h 32m

Lambert-St Louis

Mon 1/12

5:25 pm-10:55 pm

1 stop5h 30m

$227

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 1/15

5:30 am-9:22 am

1 stop3h 52m

Lambert-St Louis

Thu 1/22

11:20 am-7:30 pm

2 stops8h 10m

$232

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 1/2

5:50 pm-7:55 pm

Nonstop2h 05m

Lambert-St Louis

Tue 1/6

10:25 am-12:45 pm

Nonstop2h 20m

$233

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sun 1/18

5:35 am-7:35 am

Nonstop2h 00m

Lambert-St Louis

Mon 1/19

8:45 pm-11:00 pm

Nonstop2h 15m

$233

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sun 1/4

4:10 pm-7:55 pm

1 stop3h 45m

Lambert-St Louis

Tue 1/6

7:55 pm-10:10 pm

Nonstop2h 15m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 19 results

Compare providers for flights from Austin to St. Louis

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to St. Louis in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars
CheapOair	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Austin-St. Louis flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Austin-St. Louis flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from Austin-St. Louis flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Austin-St. Louis flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Austin to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Austin with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to St. Louis

How far ahead should I book a flight from Austin to St. Louis?

The price you pay for your flight from Austin to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 58 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Austin to St. Louis?

Currently, May is the cheapest month in which you can book a flight from Austin to St. Louis (average of $119). Flying from Austin to St. Louis in December is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from AUS to STL?

One of the essential ways to save on airfare from Austin to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the evening could potentially save you up to 40% on airfare.

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Austin to St. Louis, such as Southwest, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,252 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest

7.9

Good

4,252 reviews

Southwest

7.9

Good

4,252 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines

7.2

Good

11,048 reviews

Southwest

7.9

Good

4,252 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Frontier

5.8

Fair

3,084 reviews

Southwest

7.9

Good

4,252 reviews

Reviews

1 / 20

8.0

Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

What airports do I use to fly from Austin to St. Louis?
If you book a flight from Austin to St. Louis, you will be flying from Austin Bergstrom to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Austin Bergstrom (AUS) take 2h 00m for a nonstop flight. There are 2 flights from Austin Bergstrom to St. Louis per day from 3 airlines.
How popular is this Austin to St. Louis flight route?
This flight path from Austin Bergstrom to Lambert-St Louis was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
How long is the flight from Austin to St. Louis?
There are many flights that can get you from Austin to St. Louis in 2h 05m. Fly via Delta or Southwest to get the fastest option. The distance between Austin and St. Louis is about 722 mi. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines flying from Austin to St. Louis round-trip?
Our cheapest airline available from Austin to St. Louis is Frontier. Our recent data shows that you can find tickets from as low as $195 on this airline. Additional options worth looking into are Southwest and American Airlines, starting at $198 and $242 round-trip. You may be able to fly from Austin to St. Louis for 39% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Austin to St. Louis one-way?
$98 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and United Airlines, with prices starting from $100 and $104, respectively.
What are the cheapest flights from Austin to St. Louis?
While on average a flight from Austin to St. Louis is generally $334, our data shows the cheapest flight currently is $90. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $178 for that flight.
Can I find deals for flights from Austin to St. Louis that include hotel bookings?
Yes. In addition to deals on Austin to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Austin to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to St. Louis.
Can I find deals for business class flights from Austin to St. Louis?
Yes. Cheapflights offers flight deals from Austin to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Austin to St. Louis?
Currently, May is the cheapest month in which you can book a flight from Austin to St. Louis (average of $119). Flying from Austin to St. Louis in December is currently the most expensive (average of $217). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to St. Louis

Top 3 airlines flying from Austin to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$195	Average$300	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$198	Average$325	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$242	Average$439	FlexibilityNo cancel fee	On-time71%

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$57+ Cheap flights from Austin to St. Louis (AUS - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Austin to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Austin Bergstrom to Lambert-St Louis are usually found in October or January, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Austin to St. Louis

Cheapest flights from Austin to St. LouisExplore the most affordable flight options available from Austin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Explore the most affordable flight options available from Austin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

Find flight deals from Austin to St. Louis

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Austin to St. Louis that are best for you.

Compare providers for flights from Austin to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to St. Louis in December.

Best time to book a flight from Austin to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Austin with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Austin to St. Louis

How far ahead should I book a flight from Austin to St. Louis?

What is the cheapest month to book a flight from Austin to St. Louis?

What is the cheapest time of day to fly from AUS to STL?

Reviews of airlines servicing St. Louis

Read through reviews of airlines operating flights from Austin to St. Louis, such as Southwest, American Airlines, and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Austin to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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What are the cheapest airlines flying from Austin to St. Louis round-trip?

What are the cheapest airlines to fly from Austin to St. Louis one-way?

What are the cheapest flights from Austin to St. Louis?

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Alternative routes for Austin to St. Louis

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Top 3 airlines flying from Austin to St. Louis

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Cheapest flights from Austin to St. Louis
Explore the most affordable flight options available from Austin to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.