$82+ Cheap flights from Austin to St. Louis (AUS - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — STL
Nov 24 — Dec 11
Round-trip
1 adult, Economy
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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
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 May or December, booked 48 days in advance, depart on a Friday or Saturday and return on a Saturday
Cheap flight deals from Austin to St. Louis
Cheapest
Best
Last-minute
One-way
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 October 25, 2026.
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 October 25, 2026.
This Expedia deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:51 am -
1 stop11h 25m
Thu 11/1911:40 am -
1 stop7h 46m
Deal found 10/20![Frontier logo]()
$172
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:21 pm -
1 stop22h 53m
Mon 11/167:59 pm -
1 stop23h 27m
Deal found 10/22![Frontier logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:21 pm -
1 stop22h 53m
Mon 11/166:34 pm -
1 stop16h 51m
Deal found 10/22![Frontier logo]()
$186
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
1 stop14h 24m
Sat 11/216:05 pm -
1 stop26h 12m
Deal found 10/20![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
2 stops22h 18m
Wed 12/212:05 pm -
1 stop22h 02m
Deal found 10/24![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/27:34 pm -
1 stop17h 33m
Fri 12/47:58 pm -
1 stop21h 37m
Deal found 10/21![Frontier logo]()
$201
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
1 stop14h 24m
Fri 11/206:05 pm -
1 stop26h 09m
Deal found 10/22![Frontier logo]()
$207
This Orbitz deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:59 pm -
1 stop17h 21m
Mon 11/231:20 pm -
1 stop6h 54m
Deal found 10/23![Frontier logo]()
$209
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:15 am -
1 stop4h 47m
Thu 11/267:30 am -
1 stop6h 32m
Deal found 10/22![United Airlines logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/26:43 pm -
2 stops29h 29m
Wed 12/912:02 pm -
1 stop22h 12m
Deal found 10/24![Frontier logo]()
$212
Best flights from Austin to St. LouisDiscover 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 October 25, 2026.
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 October 25, 2026.
This Delta deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/226:43 pm -
1 stop5h 12m
Wed 1/66:00 am -
1 stop5h 19m
Deal found 10/20![Delta logo]()
$211
This Southwest deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:15 am -
1 stop6h 05m
Sun 11/229:50 pm -
Nonstop2h 05m
Deal found 10/20![Southwest logo]()
$225
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/225:35 pm -
1 stop4h 55m
Wed 1/65:02 am -
2 stops10h 18m
Deal found 10/20![United Airlines logo]()
$396
This Southwest deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/137:35 am -
Nonstop2h 00m
Sun 11/158:25 am -
Nonstop2h 10m
Deal found 10/22![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/203:40 pm -
1 stop5h 15m
Sun 11/229:50 pm -
Nonstop2h 05m
Deal found 10/23![Southwest logo]()
$283
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:15 pm -
1 stop4h 49m
Fri 1/16:00 am -
1 stop5h 22m
Deal found 10/22![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1912:15 pm -
Nonstop2h 05m
Tue 12/18:25 pm -
Nonstop2h 10m
Deal found 10/24![Southwest logo]()
$293
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/204:17 pm -
1 stop6h 09m
Sun 11/225:00 am -
2 stops10h 21m
Deal found 10/23![United Airlines logo]()
$415
This Delta deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/195:15 pm -
1 stop4h 49m
Sun 1/37:15 pm -
1 stop5h 21m
Deal found 10/22![Delta logo]()
$430
Last-minute flights from Austin to St. LouisDiscover last-minute flight deals from Austin to St. Louis. Data last updated October 25, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to St. Louis. Data last updated October 25, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:21 pm -
1 stop22h 53m
Mon 11/167:59 pm -
1 stop23h 27m
Deal found 10/22![Frontier logo]()
$182
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/121:45 pm -
Nonstop2h 05m
Mon 11/168:25 pm -
Nonstop2h 10m
Deal found 10/21![Southwest logo]()
$216
This Kiwi.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:21 pm -
1 stop22h 53m
Mon 11/166:34 pm -
1 stop16h 51m
Deal found 10/22![Frontier logo]()
$186
This Expedia deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:51 am -
1 stop11h 25m
Sat 11/216:05 pm -
1 stop26h 12m
Deal found 10/20![Frontier logo]()
$172
This CheapOair deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
1 stop14h 24m
Sat 11/216:05 pm -
1 stop26h 12m
Deal found 10/20![Frontier logo]()
$189
This Kiwi.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
2 stops22h 18m
Wed 12/212:05 pm -
1 stop22h 02m
Deal found 10/24![Frontier logo]()
$194
This CheapOair deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:21 pm -
1 stop14h 24m
Fri 11/206:05 pm -
1 stop26h 09m
Deal found 10/22![Frontier logo]()
$207
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/195:15 am -
1 stop4h 47m
Thu 11/267:30 am -
1 stop6h 32m
Deal found 10/22![United Airlines logo]()
$211
This Orbitz deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:59 pm -
1 stop17h 21m
Mon 11/231:20 pm -
1 stop6h 54m
Deal found 10/23![Frontier logo]()
$209
One-way flights from Austin to St. LouisSearch for one-way flight options from Austin to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
Search for one-way flight options from Austin to St. Louis. Find affordable one-way fares based on user searches. Data last updated October 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/311:02 am -
1 stop24h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$82
This Super.com deal was found by Cheapflights users on 10/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/912:24 pm -
1 stop5h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/19![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1112:24 pm -
1 stop5h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$94
This Expedia deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/138:21 pm -
1 stop22h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$101
This Jetabroad deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/128:21 pm -
1 stop22h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$103
This Super.com deal was found by Cheapflights users on 10/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/168:52 pm -
1 stop19h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$104
This American Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/214:09 pm -
1 stop6h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![American Airlines logo]()
$106
This Southwest deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:30 am -
Nonstop2h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Southwest logo]()
$108
This Jetabroad deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/66:31 pm -
1 stop16h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/21![Frontier logo]()
$109
This United Airlines deal was found by Cheapflights users on 10/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/155:15 am -
2 stops7h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/20![United Airlines logo]()
$111
Find flight deals from Austin to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $172 (Expedia) |
One-way from | $82 (Kiwi.com) |
Popular in | July |
Cheapest in | May |
Average price | $335 |
Good round-trip deal | $324 or less |
Good one-way deal | $233 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Austin to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
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
Cheapest round-trip
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Thu 12/3
7:30 am-9:35 am
Nonstop2h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$108
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Sat 12/19
1:30 pm-7:05 pm
1 stop5h 35m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$112
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Wed 11/11
7:30 am-9:35 am
Nonstop2h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
Quickest round-trip
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Fri 11/27
7:35 am-9:35 am
Nonstop2h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$114
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Thu 12/17
5:00 pm-12:05 am
1 stop7h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Thu 11/19
5:20 am-11:15 am
1 stop5h 55m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Sun 12/6
3:30 pm-9:35 pm
2 stops6h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$129
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Mon 12/21
7:30 am-9:30 am
Nonstop2h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$184
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Tue 12/22
7:30 am-9:30 am
Nonstop2h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$192
AustinSt. Louis
AUS Austin Bergstrom - STL Lambert-St Louis
AUSSTL
Austin Bergstrom
Mon 11/2
7:35 am-9:35 am
Nonstop2h 00m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$204
Showing 1-10 of 19 resultsSorted by cheapest first
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars |
- 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.
AUS-STL
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 47 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 $299). Flying from Austin to St. Louis in July is currently the most expensive (average of $392). 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?
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 October 25, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Austin to St. Louis as you normally would.
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated October 25, 2026.
Read through reviews of airlines operating flights from Austin to St. Louis, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
Food
7.0
Entertainment
7.4
Crew
8.6
Overall
7.9
Comfort
8.0
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentCourtney,Sep 2026
DEN - STL
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.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Collinsville
Edwardsville
Glencoe
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Austin and St. Louis flights
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Top 5 airlines flying from Austin to St. Louis
Discover the top 5 airlines that operate flights from Austin to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$160 | Average$227 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$172 | Average$248 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$190 | Average$349 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$190 | Average$350 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$227 | Average$361 | FlexibilityNo cancel fee | On-time63% |