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

This flight path from Austin Bergstrom to Lambert-St Louis 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 Austin to St. Louis round-trip?

Our cheapest airline available from Austin to St. Louis is Southwest. Our recent data shows that you can find tickets from as low as $211 on this airline. Additional options worth looking into are United Airlines and Frontier, starting at $223 and $240 round-trip. You may be able to fly from Austin to St. Louis for 35% less than the average price by searching for these airlines.

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

$100 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and Frontier, with prices starting from $105 and $107, 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 at noon 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 $273, our data shows the cheapest flight currently is $111. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $234 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 Saturday 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 101% on this flight, we recommend booking at least 52 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 $471 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 $325. Cheapflights users have found deals in the month of July for as cheap as $221. 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 Priceline the most. Priceline 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 3 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.

$100+ Flights from Austin to St. Louis - Compare & Save Big

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1. Tell us where you want to go

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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.

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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 Wednesday and return on a Tuesday

Cheap flight deals from Austin to St. Louis

Most accurate provider	FlightHub 3 stars
Most trusted provider	Priceline 3 stars
Round-trip from	$211 (Southwest)
One-way from	$100 (Mytrip)
Popular in	March
Cheapest in	July
Average price	$325
Good round-trip deal	$279 or less
Good one-way deal	$183 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. 6% potential increase in price ($23 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 May 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 May 14, 2025.

Thu 7/31:05 pmAUS - STL

Nonstop2h 05mSouthwest

Tue 7/87:10 amSTL - AUS

Nonstop2h 00mSouthwest

Deal found 5/13

$211

Tue 6/106:00 pmAUS - STL

1 stop4h 15mUnited Airlines

Tue 6/178:25 amSTL - AUS

1 stop7h 05mUnited Airlines

Deal found 5/13

$223

Tue 8/127:00 amAUS - STL

1 stop26h 11mMultiple Airlines

Thu 8/148:44 amSTL - AUS

1 stop6h 52mMultiple Airlines

Deal found 5/13

$224

Thu 6/57:06 pmAUS - STL

1 stop28h 31mFrontier

Sun 6/82:27 pmSTL - AUS

1 stop22h 31mFrontier

Deal found 5/13

$240

Wed 6/47:14 amAUS - STL

1 stop26h 01mSpirit Airlines

Sat 6/710:10 amSTL - AUS

2 stops32h 10mSpirit Airlines

Deal found 5/13

$244

Thu 7/31:29 pmAUS - STL

1 stop5h 15mDelta

Thu 7/1010:46 amSTL - AUS

1 stop6h 31mDelta

Deal found 5/13

$250

Mon 5/266:52 pmAUS - STL

1 stop3h 53mAmerican Airlines

Tue 5/2710:36 amSTL - AUS

1 stop4h 23mAmerican Airlines

Deal found 5/13

$379

Tue 5/275:35 pmAUS - STL

2 stops30h 29mAlaska Airlines

Sun 6/13:03 pmSTL - AUS

2 stops23h 03mAlaska Airlines

Deal found 5/13

$728

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 May 14, 2025.

Thu 7/31:05 pmAUS - STL

Nonstop2h 05mSouthwest

Tue 7/87:10 amSTL - AUS

Nonstop2h 00mSouthwest

Deal found 5/13

$211

Tue 6/106:00 pmAUS - STL

1 stop4h 15mUnited Airlines

Tue 6/178:25 amSTL - AUS

1 stop7h 05mUnited Airlines

Deal found 5/13

$223

Thu 6/57:06 pmAUS - STL

1 stop28h 31mFrontier

Sun 6/82:27 pmSTL - AUS

1 stop22h 31mFrontier

Deal found 5/13

$240

Wed 6/47:14 amAUS - STL

1 stop26h 01mSpirit Airlines

Sat 6/710:10 amSTL - AUS

2 stops32h 10mSpirit Airlines

Deal found 5/13

$244

Thu 7/31:29 pmAUS - STL

1 stop5h 15mDelta

Thu 7/1010:46 amSTL - AUS

1 stop6h 31mDelta

Deal found 5/13

$250

Thu 6/51:39 pmAUS - STL

3 stops30h 31mMultiple Airlines

Sun 6/810:10 amSTL - AUS

2 stops32h 10mMultiple Airlines

Deal found 5/13

$337

Mon 5/266:52 pmAUS - STL

1 stop3h 53mAmerican Airlines

Tue 5/2710:36 amSTL - AUS

1 stop4h 23mAmerican Airlines

Deal found 5/13

$379

Tue 5/275:35 pmAUS - STL

2 stops30h 29mAlaska Airlines

Sun 6/13:03 pmSTL - AUS

2 stops23h 03mAlaska Airlines

Deal found 5/13

$728

Last-minute flights from Austin to St. Louis
Discover last-minute flight deals from Austin to St. Louis. Data last updated May 14, 2025 and is based on user searches.

Mon 5/196:37 pmAUS - STL

1 stop5h 14mAmerican Airlines

Thu 5/225:00 amSTL - AUS

1 stop6h 28mAmerican Airlines

Deal found 5/13

$526

Thu 5/221:53 pmAUS - STL

1 stop23h 47mFrontier

Wed 5/285:45 pmSTL - AUS

1 stop23h 15mFrontier

Deal found 5/13

$247

Thu 5/224:21 pmAUS - STL

1 stop4h 28mUnited Airlines

Wed 5/288:10 amSTL - AUS

2 stops7h 12mUnited Airlines

Deal found 5/13

$395

Thu 5/221:39 pmAUS - STL

3 stops30h 31mMultiple Airlines

Wed 5/2812:15 pmSTL - AUS

3 stops24h 29mMultiple Airlines

Deal found 5/13

$417

Thu 5/223:15 pmAUS - STL

1 stop5h 30mSouthwest

Wed 5/2810:35 amSTL - AUS

Nonstop2h 10mSouthwest

Deal found 5/13

$429

Sat 5/242:43 pmAUS - STL

1 stop5h 56mDelta

Sun 5/2510:05 amSTL - AUS

1 stop5h 49mDelta

Deal found 5/13

$439

Mon 5/266:52 pmAUS - STL

1 stop3h 53mAmerican Airlines

Tue 5/2710:36 amSTL - AUS

1 stop4h 23mAmerican Airlines

Deal found 5/13

$379

Tue 5/275:35 pmAUS - STL

2 stops30h 29mAlaska Airlines

Sun 6/13:03 pmSTL - AUS

2 stops23h 03mAlaska Airlines

Deal found 5/13

$728

Wed 6/47:14 amAUS - STL

1 stop26h 01mSpirit Airlines

Sat 6/710:10 amSTL - AUS

2 stops32h 10mSpirit Airlines

Deal found 5/13

$244

Wed 6/48:11 pmAUS - STL

3 stops23h 59mMultiple Airlines

Sat 6/710:10 amSTL - AUS

2 stops32h 10mMultiple Airlines

Deal found 5/13

$301

Thu 6/57:06 pmAUS - STL

1 stop28h 31mFrontier

Sun 6/82:27 pmSTL - AUS

1 stop22h 31mFrontier

Deal found 5/13

$240

Tue 6/106:00 pmAUS - STL

1 stop4h 15mUnited Airlines

Tue 6/178:25 amSTL - AUS

1 stop7h 05mUnited Airlines

Deal found 5/13

$223

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 May 14, 2025.

Sun 6/154:34 pmAUS - STL

1 stop25h 44mSpirit Airlines

Deal found 5/13

$100

Sat 7/56:43 amAUS - STL

1 stop5h 52mDelta

Deal found 5/13

$105

Sun 6/86:00 amAUS - STL

1 stop27h 12mFrontier

Deal found 5/13

$107

Wed 7/26:05 amAUS - STL

1 stop3h 55mSouthwest

Deal found 5/13

$110

Sat 6/75:25 pmAUS - STL

1 stop5h 54mAmerican Airlines

Deal found 5/13

$121

Fri 8/85:00 amAUS - STL

2 stops7h 27mUnited Airlines

Deal found 5/13

$136

Thu 6/1211:48 amAUS - STL

2 stops22h 45mMultiple Airlines

Deal found 5/13

$143

Sun 6/87:28 amAUS - STL

2 stops16h 36mAlaska Airlines

Deal found 5/13

$328

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

Thu 7/3

1:05 pm-3:10 pm

Nonstop2h 05m

Lambert-St Louis

Tue 7/8

7:10 am-9:10 am

Nonstop2h 00m

$211

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 6/10

6:00 pm-10:15 pm

1 stop4h 15m

Lambert-St Louis

Tue 6/17

8:25 am-3:30 pm

1 stop7h 05m

$223

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 6/5

7:06 pm-11:37 pm

1 stop28h 31m

Lambert-St Louis

Sun 6/8

2:27 pm-12:58 pm

1 stop22h 31m

$240

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Wed 6/4

7:14 am-9:15 am

1 stop26h 01m

Lambert-St Louis

Sat 6/7

10:10 am-6:20 pm

2 stops32h 10m

$244

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 7/3

1:29 pm-6:44 pm

1 stop5h 15m

Lambert-St Louis

Fri 7/11

6:00 am-10:59 am

1 stop4h 59m

$250

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Thu 6/5

1:39 pm-8:10 pm

3 stops30h 31m

Lambert-St Louis

Sun 6/8

10:10 am-6:20 pm

2 stops32h 10m

$337

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Mon 5/26

6:52 pm-10:45 pm

1 stop3h 53m

Lambert-St Louis

Tue 5/27

10:36 am-2:59 pm

1 stop4h 23m

$379

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Tue 5/27

5:35 pm-12:04 am

2 stops30h 29m

Lambert-St Louis

Sun 6/1

3:03 pm-2:06 pm

2 stops23h 03m

$728

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sun 6/15

4:34 pm-6:18 pm

1 stop25h 44m

$100

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Sat 7/5

6:43 am-12:35 pm

1 stop5h 52m

$105

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

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 May.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*2 stars
Priceline	Price Accuracy2 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 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 Priceline the most. Priceline 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 at noon tend to be the most expensive. A flight in the evening could potentially save you up to 43% on airfare.

Weekly flight availability from Austin to St. Louis

The most flights from AUS to STL are scheduled on a Sunday (5 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (3 on average).

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

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Alaska Airlines

8.0

Very good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Southwest

8.0

Very good

4,290 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Delta

8.0

Very good

7,949 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

United Airlines

7.4

Good

8,726 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

10,000 reviews

Reviews

1 / 20

10.0

Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 3 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 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 Austin to St. Louis round-trip?
Our cheapest airline available from Austin to St. Louis is Southwest. Our recent data shows that you can find tickets from as low as $211 on this airline. Additional options worth looking into are United Airlines and Frontier, starting at $223 and $240 round-trip. You may be able to fly from Austin to St. Louis for 35% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Austin to St. Louis one-way?
$100 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Delta and Frontier, with prices starting from $105 and $107, respectively.
What are the cheapest flights from Austin to St. Louis?
While on average a flight from Austin to St. Louis is generally $273, our data shows the cheapest flight currently is $111. When looking at the most popular route, (Austin Bergstrom - Lambert-St Louis), you can expect to pay $234 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

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Complete your trip

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Other flights to St. Louis

Top 5 airlines flying from Austin to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$139	Average$278	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$194	Average$332	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$198	Average$264	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$199	Average$320	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$227	Average$330	FlexibilityNo cancel fee	On-time63%

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$100+ 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 6/15. 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 Wednesday and return on a Tuesday

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 May 14, 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 May 14, 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 May.

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 May 9, 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 May 14, 2025.

Weekly flight availability from Austin to St. Louis

Explore weekly flight availability from Austin to St. Louis. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 14, 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?

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Alternative routes for Austin to St. Louis

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Top 5 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 May 14, 2025.