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

This flight path from Austin Bergstrom to Lambert-St Louis was viewed by 6 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 Austin to St. Louis round-trip?

Our cheapest airline available from Austin to St. Louis is American Airlines. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $186 and $197 round-trip. You may be able to fly from Austin to St. Louis for 55% less than the average price by searching for these airlines.

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

$70 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 United Airlines and Southwest, with prices starting from $91 and $99, respectively.

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

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

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

While on average a flight from Austin to St. Louis is generally $294, our data shows the cheapest flight currently is $129. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $197 for that flight.

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

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

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

Users have found that flying from Austin to St. Louis on a Friday 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 Austin to St. Louis?

To save up to 100% on this flight, we recommend booking at least 48 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Austin to St. Louis from $354 1-2 weeks out and tickets from $461 for flights departing within the next 72 hours.

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

July can be a great time to fly to St. Louis from Austin with a flight ticket averaging about $334. Cheapflights users have found deals in the month of July for as cheap as $224. The most expensive prices can be found in the month of March.

Most accurate provider : When it comes to deals on Austin-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-St. Louis flight deals on Cheapflights vs. FlightHub >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 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 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 05m for a nonstop flight. There are 2 flights from Austin Bergstrom to St. Louis per day from 5 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.

$70+ Flights from Austin to St. Louis

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

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 Austin Bergstrom to Lambert-St Louis are usually found in July or August, booked 77 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Austin to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$148 (American Airlines)
One-way from	$70 (American Airlines)
Popular in	March
Cheapest in	July
Average price	$392
Good round-trip deal	$291 or less
Good one-way deal	$193 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. 8% potential increase in price ($29 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 March 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

Find 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 March 25, 2025.

Wed 4/303:19 pmAUS - STL

1 stop6h 05mAmerican Airlines

Sat 5/37:04 amSTL - AUS

1 stop4h 32mAmerican Airlines

Deal found 3/24

$148

Sat 5/175:05 amAUS - STL

2 stops7h 14mUnited Airlines

Tue 5/206:30 amSTL - AUS

1 stop5h 31mUnited Airlines

Deal found 3/23

$186

Tue 6/246:43 amAUS - STL

1 stop7h 55mDelta

Fri 6/277:04 pmSTL - AUS

1 stop5h 15mDelta

Deal found 3/24

$197

Thu 4/175:00 amAUS - STL

Nonstop2h 05mSouthwest

Sat 4/198:45 pmSTL - AUS

Nonstop2h 05mSouthwest

Deal found 3/23

$210

Fri 4/46:10 amAUS - STL

1 stop26h 56mFrontier

Fri 4/186:38 pmSTL - AUS

1 stop17h 46mFrontier

Deal found 3/24

$260

Wed 5/77:15 amAUS - STL

1 stop26h 00mSpirit Airlines

Sun 5/1110:10 amSTL - AUS

2 stops24h 20mSpirit Airlines

Deal found 3/23

$266

Wed 5/77:15 amAUS - STL

1 stop26h 00mMultiple Airlines

Sun 5/1112:15 pmSTL - AUS

3 stops34h 48mMultiple Airlines

Deal found 3/23

$280

Fri 10/171:55 pmAUS - STL

2 stops23h 57mAlaska Airlines

Sun 10/197:00 amSTL - AUS

2 stops29h 55mAlaska Airlines

Deal found 3/23

$640

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 March 25, 2025.

Wed 4/303:19 pmAUS - STL

1 stop6h 05mAmerican Airlines

Sat 5/37:04 amSTL - AUS

1 stop4h 32mAmerican Airlines

Deal found 3/24

$148

Sat 5/175:05 amAUS - STL

2 stops7h 14mUnited Airlines

Tue 5/206:30 amSTL - AUS

1 stop5h 31mUnited Airlines

Deal found 3/23

$186

Tue 6/246:43 amAUS - STL

1 stop7h 55mDelta

Fri 6/277:04 pmSTL - AUS

1 stop5h 15mDelta

Deal found 3/24

$197

Thu 4/175:00 amAUS - STL

Nonstop2h 05mSouthwest

Sat 4/198:45 pmSTL - AUS

Nonstop2h 05mSouthwest

Deal found 3/23

$210

Fri 4/46:10 amAUS - STL

1 stop26h 56mFrontier

Fri 4/186:38 pmSTL - AUS

1 stop17h 46mFrontier

Deal found 3/24

$260

Wed 5/77:15 amAUS - STL

1 stop26h 00mSpirit Airlines

Sun 5/1110:10 amSTL - AUS

2 stops24h 20mSpirit Airlines

Deal found 3/23

$266

Wed 5/77:15 amAUS - STL

1 stop26h 00mMultiple Airlines

Sun 5/1112:15 pmSTL - AUS

3 stops34h 48mMultiple Airlines

Deal found 3/23

$280

Thu 5/157:28 amAUS - STL

2 stops16h 36mAlaska Airlines

Fri 5/166:22 pmSTL - AUS

2 stops22h 13mAlaska Airlines

Deal found 3/24

$670

Last-minute flights from Austin to St. Louis
Discover last-minute flight deals from Austin to St. Louis. Data last updated March 25, 2025 and is based on user searches.

Sat 3/296:00 amAUS - STL

1 stop4h 38mAmerican Airlines

Sat 3/293:48 pmSTL - AUS

1 stop6h 18mAmerican Airlines

Deal found 3/22

$439

Mon 3/315:50 pmAUS - STL

Nonstop2h 05mSouthwest

Fri 4/48:10 pmSTL - AUS

1 stop5h 00mSouthwest

Deal found 3/24

$499

Mon 3/315:50 pmAUS - STL

1 stop4h 19mUnited Airlines

Thu 4/36:15 amSTL - AUS

1 stop6h 47mUnited Airlines

Deal found 3/24

$509

Mon 3/317:59 pmAUS - STL

2 stops28h 00mAlaska Airlines

Fri 4/43:11 pmSTL - AUS

2 stops27h 48mAlaska Airlines

Deal found 3/24

$1,121

Fri 4/46:10 amAUS - STL

1 stop26h 56mFrontier

Fri 4/186:38 pmSTL - AUS

1 stop17h 46mFrontier

Deal found 3/24

$260

Tue 4/154:56 pmAUS - STL

1 stop6h 40mDelta

Thu 4/177:01 pmSTL - AUS

1 stop5h 28mDelta

Deal found 3/22

$197

Thu 4/175:00 amAUS - STL

Nonstop2h 05mSouthwest

Sat 4/198:45 pmSTL - AUS

Nonstop2h 05mSouthwest

Deal found 3/23

$210

Mon 4/217:52 pmAUS - STL

3 stops21h 23mSpirit Airlines

Tue 4/296:10 pmSTL - AUS

1 stop16h 07mSpirit Airlines

Deal found 3/23

$314

Mon 4/217:52 pmAUS - STL

2 stops21h 23mMultiple Airlines

Tue 5/612:15 pmSTL - AUS

3 stops34h 48mMultiple Airlines

Deal found 3/23

$344

Tue 4/297:10 amAUS - STL

2 stops7h 32mUnited Airlines

Thu 5/15:20 amSTL - AUS

1 stop6h 00mUnited Airlines

Deal found 3/24

$230

Wed 4/303:19 pmAUS - STL

1 stop6h 05mAmerican Airlines

Sat 5/37:04 amSTL - AUS

1 stop4h 32mAmerican Airlines

Deal found 3/24

$148

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 March 25, 2025.

Tue 4/295:00 amAUS - STL

1 stop4h 01mAmerican Airlines

Deal found 3/24

$70

Fri 4/257:00 amAUS - STL

1 stop7h 42mUnited Airlines

Deal found 3/24

$91

Wed 5/284:15 pmAUS - STL

Nonstop2h 05mSouthwest

Deal found 3/24

$99

Mon 5/126:08 pmAUS - STL

1 stop5h 18mDelta

Deal found 3/24

$116

Mon 4/289:08 pmAUS - STL

1 stop20h 07mSpirit Airlines

Deal found 3/23

$118

Sun 4/136:10 amAUS - STL

1 stop5h 12mFrontier

Deal found 3/23

$129

Thu 5/1511:35 amAUS - STL

3 stops32h 35mMultiple Airlines

Deal found 3/24

$162

Wed 5/78:45 amAUS - STL

2 stops15h 14mAlaska Airlines

Deal found 3/23

$227

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 4/30

3:19 pm-9:24 pm

1 stop6h 05m

Lambert-St Louis

Sat 5/3

7:04 am-11:36 am

1 stop4h 32m

$148

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 5/17

5:05 am-12:19 pm

2 stops7h 14m

Lambert-St Louis

Tue 5/20

6:30 am-12:01 pm

1 stop5h 31m

$186

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 6/24

6:43 am-2:38 pm

1 stop7h 55m

Lambert-St Louis

Fri 6/27

7:04 pm-12:19 am

1 stop5h 15m

$197

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 4/17

5:00 am-7:05 am

Nonstop2h 05m

Lambert-St Louis

Sat 4/19

8:45 pm-10:50 pm

Nonstop2h 05m

$210

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 4/4

6:10 am-9:06 am

1 stop26h 56m

Lambert-St Louis

Fri 4/18

6:38 pm-12:24 pm

1 stop17h 46m

$260

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 5/7

7:15 am-9:15 am

1 stop26h 00m

Lambert-St Louis

Sun 5/11

10:10 am-10:30 am

2 stops24h 20m

$266

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 5/7

7:15 am-9:15 am

1 stop26h 00m

Lambert-St Louis

Sun 5/11

12:15 pm-11:03 pm

3 stops34h 48m

$280

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 5/15

7:28 am-12:04 am

2 stops16h 36m

Lambert-St Louis

Fri 5/16

6:22 pm-4:35 pm

2 stops22h 13m

$670

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 4/29

5:00 am-9:01 am

1 stop4h 01m

$70

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 4/25

7:00 am-2:42 pm

1 stop7h 42m

$91

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 16 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 March.

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
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 Austin-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-St. Louis flight deals on Cheapflights vs. FlightHub >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 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 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 77 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, August is the cheapest month in which you can book a flight from Austin to St. Louis (average of $311). Flying from Austin to St. Louis in March is currently the most expensive (average of $356). 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 in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 44% on airfare.

Rainfall in St. Louis by month

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.

Temperature in St. Louis by month

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).

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Austin to St. Louis to help guide your decision. 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

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines

8.0

Very good

9,785 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Southwest

8.0

Very good

4,272 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta

8.0

Very good

7,890 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines

7.4

Good

8,605 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,785 reviews

Reviews

1 / 20

10.0

Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 05m for a nonstop flight. There are 2 flights from Austin Bergstrom to St. Louis per day from 5 airlines.
How popular is this Austin to St. Louis flight route?
This flight path from Austin Bergstrom to Lambert-St Louis was viewed by 6 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 Austin to St. Louis round-trip?
Our cheapest airline available from Austin to St. Louis is American Airlines. Our recent data shows that you can find tickets from as low as $148 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $186 and $197 round-trip. You may be able to fly from Austin to St. Louis for 55% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Austin to St. Louis one-way?
$70 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 United Airlines and Southwest, with prices starting from $91 and $99, respectively.
What are the cheapest flights from Austin to St. Louis?
While on average a flight from Austin to St. Louis is generally $294, our data shows the cheapest flight currently is $129. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $197 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, August is the cheapest month in which you can book a flight from Austin to St. Louis (average of $311). Flying from Austin to St. Louis in March is currently the most expensive (average of $356). 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

Fenton

Fairview Heights

Maryland Heights

Collinsville

Wentzville

Eureka

St. Peters

Festus

Glencoe

Alton

Farmington

Chesterfield

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Austin to St. Louis

Dallas/Fort Worth to Kansas City flights

Dallas/Fort Worth to St. Louis flights

Hobby to St. Louis flights

Hobby to Kansas City flights

George Bush Intcntl to St. Louis flights

George Bush Intcntl to Kansas City flights

Love Field to St. Louis flights

Austin to Kansas City flights

San Antonio to Kansas City flights

Love Field to Kansas City flights

Hobby to Springfield flights

Dallas/Fort Worth to Springfield flights

George Bush Intcntl to Springfield flights

San Antonio to St. Louis flights

El Paso to St. Louis flights

Austin to Springfield flights

San Antonio to Springfield flights

Dallas/Fort Worth to Columbia flights

Love Field to Springfield flights

El Paso to Kansas City flights

Hobby to Columbia flights

Corpus Christi to St. Louis flights

McAllen to Kansas City flights

El Paso to Springfield flights

McAllen to Springfield flights

George Bush Intcntl to Columbia flights

Lubbock to St. Louis flights

Dallas/Fort Worth to Joplin flights

Lubbock to Kansas City flights

Dallas/Fort Worth to Branson flights

Killeen to Kansas City flights

Beaumont to Kansas City flights

Lubbock to Springfield flights

Laredo to Kansas City flights

George Bush Intcntl to Joplin flights

Killeen to St. Louis flights

Austin to Joplin flights

Midland to Springfield flights

Abilene to Springfield flights

Killeen to Columbia flights

El Paso to Branson flights

San Antonio to Joplin flights

Austin to Columbia flights

Waco to St. Louis flights

McAllen to Joplin flights

San Angelo to Kansas City flights

Killeen to Joplin flights

Lubbock to Columbia flights

Killeen to Fort Leonard Wood flights

Complete your trip

St. Louis car rentals

Lambert-St Louis Airport car rentals

Springfield Capital Airport car rentals

Belleville Airport car rentals

Marion Williamson County Airport car rentals

Kansas City car rentals

Springfield car rentals

Columbia car rentals

Joplin car rentals

Fort Leonard Wood car rentals

Downtown car rentals

Central West End car rentals

Other flights to St. Louis

Top 5 airlines flying from Austin to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$136	Average$278	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$194	Average$331	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$198	Average$286	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$199	Average$321	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$237	Average$343	FlexibilityNo cancel fee	On-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$70+ 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 4/29. 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 July or August, booked 77 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap 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

Find 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 March 25, 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 March 25, 2025.

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 March.

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?

Use this chart to determine the optimal time to book a round-trip flight from Austin to St. Louis. Price data was last updated on March 21, 2025.

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?

Find hourly flight availability from Austin to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 25, 2025.

Rainfall in St. Louis by month

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

Temperature in St. Louis by month

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

Reviews of airlines servicing St. Louis

Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Austin to St. Louis to help guide your decision. 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 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.

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

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

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?

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

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

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

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

Traveling to a place near Austin?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Austin to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Top 5 airlines flying from Austin to St. Louis

100% Free

Book with Flexibility

Travel Smart

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 March 25, 2025.