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

The Lambert-St Louis to Austin Bergstrom flight path was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

According to our current data, Frontier ($208), Southwest ($209), and Delta ($219) offers the cheapest pricing from St. Louis to Austin. Users have found that Frontier is 34% cheaper than the other options available to this destination.

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

The cheapest airlines for a one-way flight from St. Louis to Austin are Spirit Airlines ($91), Frontier ($96), and Southwest ($100).

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

While on average a flight from St. Louis to Austin is generally $297, our data shows the cheapest flight currently is $98. When looking at the most popular route, (Lambert-St Louis - Austin Bergstrom), you can expect to pay $208 for that flight.

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

The most popular airlines flying from St. Louis to Austin are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from St. Louis to Austin?

Users have found that flying from St. Louis to Austin on a Thursday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

Travelers have found it’s best to book a flight 52 days in advance to save up to 80% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 52 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to Austin 1-2 weeks in advance for as low as $358, or $391 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to Austin?

September is one of the best times of the year to fly to Austin from St. Louis. Prices for September average $316 per person but you can even find prices for as low as $154. The most expensive prices can be found in the month of April. Opting for a September flight can save you 13% on your journey compared to booking in April

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

Most trusted provider : When it comes to deals on St. Louis-Austin flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-Austin 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 St. Louis to Austin?

If you book a flight from St. Louis to Austin, you will be flying from Lambert-St Louis to Austin Bergstrom. Flights to Austin Bergstrom (AUS) from Lambert-St Louis (STL) take 2h 00m for a nonstop flight. There are 2 flights from Lambert-St Louis to Austin per day from 5 airlines.

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

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

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

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

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

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

$91+ Flights from St. Louis to Austin

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Find cheap flights from St. Louis to Austin 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

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Lambert-St Louis to Austin Bergstrom are usually found in September or January, booked 63 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Austin

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$208 (FlightHub)
One-way from	$91 (FlightHub)
Popular in	April
Cheapest in	September
Average price	$359
Good round-trip deal	$277 or less
Good one-way deal	$249 or less

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

Search Deals

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

Search Deals

From Lambert-St Louis to Austin Bergstrom

Search Deals

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

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in April 2025

Search Deals

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

Search Deals

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

Search Deals

Find flight deals from St. Louis to Austin

Cheapest flights from St. Louis to Austin
Explore the most affordable flight options available from St. Louis to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Fri 5/96:53 pmSTL - AUS

1 stop28h 27mFrontier

Sun 5/116:00 amAUS - STL

1 stop27h 09mFrontier

Deal found 4/10

$208

Wed 5/146:00 amSTL - AUS

1 stop7h 38mDelta

Wed 5/146:08 pmAUS - STL

1 stop5h 18mDelta

Deal found 4/11

$209

Thu 5/86:55 amSTL - AUS

Nonstop2h 05mSouthwest

Tue 5/136:20 amAUS - STL

Nonstop2h 05mSouthwest

Deal found 4/10

$211

Thu 5/14:07 pmSTL - AUS

1 stop7h 13mMultiple Airlines

Sat 5/39:08 pmAUS - STL

1 stop20h 07mMultiple Airlines

Deal found 4/9

$212

Thu 5/156:00 amSTL - AUS

1 stop4h 41mUnited Airlines

Tue 5/207:10 amAUS - STL

2 stops7h 37mUnited Airlines

Deal found 4/10

$285

Mon 6/234:17 pmSTL - AUS

1 stop7h 07mSpirit Airlines

Thu 6/267:27 pmAUS - STL

1 stop19h 55mSpirit Airlines

Deal found 4/10

$287

Thu 10/165:28 amSTL - AUS

1 stop3h 58mAmerican Airlines

Mon 10/206:03 amAUS - STL

1 stop4h 13mAmerican Airlines

Deal found 4/10

$546

Fri 5/26:30 amSTL - AUS

2 stops17h 49mAlaska Airlines

Tue 5/66:03 amAUS - STL

2 stops17h 56mAlaska Airlines

Deal found 4/9

$574

Best flights from St. Louis to Austin
Discover carefully curated flight deals from St. Louis to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 11, 2025.

Thu 4/249:55 pmSTL - AUS

1 stop16h 19mFrontier

Mon 5/510:32 amAUS - STL

1 stop13h 34mFrontier

Deal found 4/8

$208

Sat 5/245:45 amSTL - AUS

1 stop6h 00mSouthwest

Sun 5/256:10 amAUS - STL

Nonstop2h 05mSouthwest

Deal found 4/10

$209

Thu 5/14:07 pmSTL - AUS

1 stop7h 13mMultiple Airlines

Sat 5/39:08 pmAUS - STL

1 stop20h 07mMultiple Airlines

Deal found 4/9

$212

Sat 5/243:40 pmSTL - AUS

1 stop5h 34mDelta

Sun 5/256:45 amAUS - STL

1 stop5h 19mDelta

Deal found 4/10

$219

Thu 4/246:10 pmSTL - AUS

2 stops16h 20mSpirit Airlines

Mon 5/59:08 pmAUS - STL

1 stop20h 07mSpirit Airlines

Deal found 4/8

$279

Thu 5/156:00 amSTL - AUS

1 stop4h 41mUnited Airlines

Tue 5/207:10 amAUS - STL

2 stops7h 37mUnited Airlines

Deal found 4/10

$285

Fri 5/26:30 amSTL - AUS

2 stops17h 49mAlaska Airlines

Tue 5/66:03 amAUS - STL

2 stops17h 56mAlaska Airlines

Deal found 4/9

$574

Last-minute flights from St. Louis to Austin
Discover last-minute flight deals from St. Louis to Austin. Data last updated April 11, 2025 and is based on user searches.

Wed 4/166:51 pmSTL - AUS

1 stop18h 07mFrontier

Fri 4/186:10 amAUS - STL

1 stop26h 56mFrontier

Deal found 4/10

$240

Thu 4/177:01 pmSTL - AUS

1 stop5h 28mDelta

Mon 4/216:30 pmAUS - STL

1 stop5h 06mDelta

Deal found 4/10

$439

Sun 4/2012:41 pmSTL - AUS

1 stop10h 52mMultiple Airlines

Sat 4/269:08 pmAUS - STL

1 stop20h 07mMultiple Airlines

Deal found 4/10

$294

Sun 4/2012:30 pmSTL - AUS

Nonstop2h 05mSouthwest

Sat 4/263:45 pmAUS - STL

Nonstop2h 10mSouthwest

Deal found 4/10

$429

Sun 4/206:10 pmSTL - AUS

2 stops16h 20mSpirit Airlines

Sat 4/269:08 pmAUS - STL

1 stop20h 07mSpirit Airlines

Deal found 4/10

$433

Sun 4/206:30 amSTL - AUS

2 stops11h 16mUnited Airlines

Sat 4/265:00 amAUS - STL

2 stops9h 45mUnited Airlines

Deal found 4/10

$459

Mon 4/213:11 pmSTL - AUS

2 stops25h 52mAlaska Airlines

Thu 4/246:03 pmAUS - STL

2 stops29h 56mAlaska Airlines

Deal found 4/11

$981

Thu 5/14:07 pmSTL - AUS

1 stop7h 13mMultiple Airlines

Sat 5/39:08 pmAUS - STL

1 stop20h 07mMultiple Airlines

Deal found 4/9

$212

Fri 5/26:30 amSTL - AUS

2 stops17h 49mAlaska Airlines

Tue 5/66:03 amAUS - STL

2 stops17h 56mAlaska Airlines

Deal found 4/9

$574

Thu 5/86:55 amSTL - AUS

Nonstop2h 05mSouthwest

Tue 5/136:20 amAUS - STL

Nonstop2h 05mSouthwest

Deal found 4/10

$211

Fri 5/96:53 pmSTL - AUS

1 stop28h 27mFrontier

Sun 5/116:00 amAUS - STL

1 stop27h 09mFrontier

Deal found 4/10

$208

Wed 5/146:00 amSTL - AUS

1 stop7h 38mDelta

Wed 5/146:08 pmAUS - STL

1 stop5h 18mDelta

Deal found 4/11

$209

One-way flights from St. Louis to Austin
Search for one-way flight options from St. Louis to Austin. Find affordable one-way fares based on user searches. Data last updated April 11, 2025.

Sat 5/1710:10 amSTL - AUS

1 stop12h 53mSpirit Airlines

Deal found 4/10

$91

Wed 5/145:45 pmSTL - AUS

1 stop25h 40mFrontier

Deal found 4/10

$96

Tue 5/135:20 pmSTL - AUS

Nonstop2h 05mSouthwest

Deal found 4/10

$100

Tue 5/135:40 pmSTL - AUS

1 stop5h 21mDelta

Deal found 4/10

$105

Sun 5/258:10 amSTL - AUS

2 stops7h 12mUnited Airlines

Deal found 4/10

$115

Sat 5/314:52 pmSTL - AUS

1 stop6h 10mAmerican Airlines

Deal found 4/10

$129

Mon 5/1912:15 pmSTL - AUS

3 stops34h 48mMultiple Airlines

Deal found 4/10

$149

Fri 5/306:22 pmSTL - AUS

2 stops22h 13mAlaska Airlines

Deal found 4/10

$252

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Fri 5/9

6:53 pm-11:20 pm

1 stop28h 27m

Austin Bergstrom

Sun 5/11

6:00 am-9:09 am

1 stop27h 09m

$208

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 5/14

6:00 am-1:38 pm

1 stop7h 38m

Austin Bergstrom

Wed 5/14

6:08 pm-11:26 pm

1 stop5h 18m

$209

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 5/8

6:55 am-9:00 am

Nonstop2h 05m

Austin Bergstrom

Tue 5/13

6:20 am-8:25 am

Nonstop2h 05m

$211

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 5/1

4:07 pm-11:20 pm

1 stop7h 13m

Austin Bergstrom

Sat 5/3

9:08 pm-5:15 pm

1 stop20h 07m

$212

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Thu 5/15

6:00 am-10:41 am

1 stop4h 41m

Austin Bergstrom

Tue 5/20

7:10 am-2:47 pm

2 stops7h 37m

$285

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Mon 6/23

4:17 pm-11:24 pm

1 stop7h 07m

Austin Bergstrom

Thu 6/26

7:27 pm-3:22 pm

1 stop19h 55m

$287

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Fri 5/2

6:30 am-12:19 am

2 stops17h 49m

Austin Bergstrom

Tue 5/6

6:03 am-11:59 pm

2 stops17h 56m

$574

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Sat 5/17

10:10 am-11:03 pm

1 stop12h 53m

$91

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Wed 5/14

5:45 pm-7:25 pm

1 stop25h 40m

$96

St. LouisAustin

STL - AUS

STLAUS

Lambert-St Louis

Tue 5/13

5:20 pm-7:25 pm

Nonstop2h 05m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/10

Showing 1-10 of 15 results

Compare providers for flights from St. Louis to Austin

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

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Flightnetwork	Price Accuracy-	Trust Score*3 stars
Mytrip	Price Accuracy3 stars	Trust Score*3 stars
Gotogate	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	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 St. Louis-Austin flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Austin flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Austin flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on St. Louis-Austin flights, Cheapflights users trust FlightHub the most. FlightHub 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 St. Louis-Austin 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 St. Louis to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from St. Louis 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 St. Louis to Austin

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

The price you pay for your flight from St. Louis to Austin may vary depending on when you book. For the best chance of a lower fare, look to book 63 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 St. Louis to Austin?

Currently, January is the cheapest month in which you can book a flight from St. Louis to Austin (average of $286). Flying from St. Louis to Austin in March is currently the most expensive (average of $362). 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 STL to AUS?

When flying from St. Louis to Austin, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 5% versus a flight at noon.

What is the cheapest day to fly from St. Louis to Austin?

Travelers seeking maximum savings on their St. Louis to Austin flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Austin by month

In terms of precipitation, rainfall in Austin ranges from 2.1 - 4.2 inches per month. May is typically the wettest month, when rainfall can reach 4.2 in. July is typically the driest time to visit Austin when rainfall is around 2.1 in.

Temperature in Austin by month

If weather is an important factor for your trip to Austin, 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 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Austin

Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from St. Louis to Austin by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,851 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,279 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,911 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,636 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,851 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

What airports do I use to fly from St. Louis to Austin?
If you book a flight from St. Louis to Austin, you will be flying from Lambert-St Louis to Austin Bergstrom. Flights to Austin Bergstrom (AUS) from Lambert-St Louis (STL) take 2h 00m for a nonstop flight. There are 2 flights from Lambert-St Louis to Austin per day from 5 airlines.
How popular is this St. Louis to Austin flight route?
The Lambert-St Louis to Austin Bergstrom flight path was viewed by 7 users in the past month. Keep an eye out for changes in search interest prior to high and low season.
What are the cheapest airlines flying from St. Louis to Austin round-trip?
According to our current data, Frontier ($208), Southwest ($209), and Delta ($219) offers the cheapest pricing from St. Louis to Austin. Users have found that Frontier is 34% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from St. Louis to Austin one-way?
The cheapest airlines for a one-way flight from St. Louis to Austin are Spirit Airlines ($91), Frontier ($96), and Southwest ($100).
What are the cheapest flights from St. Louis to Austin?
While on average a flight from St. Louis to Austin is generally $297, our data shows the cheapest flight currently is $98. When looking at the most popular route, (Lambert-St Louis - Austin Bergstrom), you can expect to pay $208 for that flight.
Can I find deals for flights from St. Louis to Austin that include hotel bookings?
Yes. In addition to deals on St. Louis to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from St. Louis to Austin?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Austin.
Can I find deals for business class flights from St. Louis to Austin?
Yes. Cheapflights offers flight deals from St. Louis to Austin 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 St. Louis to Austin?
Currently, January is the cheapest month in which you can book a flight from St. Louis to Austin (average of $286). Flying from St. Louis to Austin in March is currently the most expensive (average of $362). 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.

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Top 5 airlines flying from St. Louis to Austin

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$134	Average$182	FlexibilityNo cancel fee	On-time62%
Delta	Cheapest$196	Average$290	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$213	Average$306	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$219	Average$341	FlexibilityNo cancel fee	On-time63%
United Airlines	Cheapest$256	Average$360	FlexibilityNo cancel fee	On-time69%

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$91+ Cheap flights from St. Louis to Austin (STL - AUS)

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 5/17. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to Austin 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 Lambert-St Louis to Austin Bergstrom are usually found in September or January, booked 63 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from St. Louis to Austin

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

Find flight deals from St. Louis to Austin

Cheapest flights from St. Louis to AustinExplore the most affordable flight options available from St. Louis to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Explore the most affordable flight options available from St. Louis to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.

Cheapflights Fare Finder

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

Compare providers for flights from St. Louis to Austin

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 St. Louis to Austin in April.

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

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

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Austin. Price data was last updated on April 4, 2025.

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

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

Find hourly flight availability from St. Louis to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 11, 2025.

What is the cheapest day to fly from St. Louis to Austin?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Austin. Price data was last updated on March 30, 2025.

Rainfall in Austin by month

Plan your trip to Austin by taking into account the average rainfall totals by month.

Temperature in Austin by month

Plan your trip to Austin by taking into account the average temperature totals by month.

Reviews of airlines servicing Austin

Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from St. Louis to Austin by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Austin. 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 St. Louis to Austin round-trip?

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

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

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

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

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

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

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Alternative routes for St. Louis to Austin

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Top 5 airlines flying from St. Louis to Austin

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Cheapest flights from St. Louis to Austin
Explore the most affordable flight options available from St. Louis to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 11, 2025.