$70+ 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 8/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — AUS
Jun 15 — Jun 221
Round-trip
1 adult, Economy
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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 August, booked 86 days in advance, depart on a Saturday or Wednesday and return on a Friday
Cheap flight deals from St. Louis to Austin
Cheapest
Best
Last-minute
One-way
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 May 16, 2026.
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 May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 7/84:52 pm
STL
- AUS
1 stop23h 47m
Frontier
Sun 7/125:38 pm
AUS
- STL
1 stop15h 19m
Frontier
Deal found 5/15![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 7/84:52 pm
STL
- AUS
1 stop23h 47m
Frontier
Tue 7/148:15 pm
AUS
- STL
1 stop23h 08m
Frontier
Deal found 5/15![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Mon 7/64:52 pm
STL
- AUS
1 stop23h 47m
Frontier
Sun 7/125:38 pm
AUS
- STL
1 stop15h 19m
Frontier
Deal found 5/15![Frontier logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Mon 7/64:52 pm
STL
- AUS
1 stop23h 47m
Frontier
Tue 7/148:15 pm
AUS
- STL
1 stop23h 08m
Frontier
Deal found 5/15![Frontier logo]()
$175
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 7/84:52 pm
STL
- AUS
1 stop23h 47m
Frontier
Wed 7/156:30 am
AUS
- STL
1 stop12h 53m
Frontier
Deal found 5/15![Frontier logo]()
$181
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 6/35:25 am
STL
- AUS
1 stop5h 17m
American Airlines
Wed 6/105:01 am
AUS
- STL
1 stop3h 49m
American Airlines
Deal found 5/13![American Airlines logo]()
$191
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 5/265:25 am
STL
- AUS
1 stop4h 28m
American Airlines
Tue 6/27:50 pm
AUS
- STL
1 stop4h 09m
American Airlines
Deal found 5/12![American Airlines logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 5/15. 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 7/84:52 pm
STL
- AUS
1 stop23h 47m
Multiple Airlines
Mon 7/135:49 pm
AUS
- STL
2 stops23h 48m
Multiple Airlines
Deal found 5/15![Multiple Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 5/265:25 am
STL
- AUS
1 stop4h 28m
American Airlines
Fri 5/296:22 pm
AUS
- STL
1 stop5h 32m
American Airlines
Deal found 5/12![American Airlines logo]()
$209
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Tue 7/76:33 pm
STL
- AUS
1 stop18h 05m
Frontier
Fri 7/101:40 pm
AUS
- STL
1 stop19h 17m
Frontier
Deal found 5/15![Frontier logo]()
$212
Best flights from St. Louis to AustinDiscover 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 May 16, 2026.
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 May 16, 2026.
This United Airlines deal was found by Cheapflights users on 5/13. 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 6/46:14 am
STL
- AUS
1 stop5h 05m
United Airlines
Mon 6/86:29 pm
AUS
- STL
1 stop5h 28m
United Airlines
Deal found 5/13![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 5/12. 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 6/252:55 pm
STL
- AUS
1 stop4h 25m
Southwest
Wed 7/157:25 am
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 5/12![Southwest logo]()
$274
This United Airlines deal was found by Cheapflights users on 5/11. 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 7/26:00 am
STL
- AUS
1 stop5h 59m
United Airlines
Tue 7/76:40 am
AUS
- STL
1 stop5h 31m
United Airlines
Deal found 5/11![United Airlines logo]()
$191
This Southwest deal was found by Cheapflights users on 5/13. 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.
Sun 7/126:00 am
STL
- AUS
1 stop6h 15m
Southwest
Tue 7/143:35 pm
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 5/13![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/11. 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 6/98:35 am
STL
- AUS
1 stop4h 37m
United Airlines
Wed 6/103:42 pm
AUS
- STL
1 stop7h 47m
United Airlines
Deal found 5/11![United Airlines logo]()
$271
This Southwest deal was found by Cheapflights users on 5/12. 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.
Mon 8/108:45 pm
STL
- AUS
Nonstop2h 00m
Southwest
Wed 8/127:30 am
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 5/12![Southwest logo]()
$278
This United Airlines deal was found by Cheapflights users on 5/12. 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.
Sat 8/228:00 am
STL
- AUS
2 stops7h 26m
United Airlines
Wed 8/265:30 am
AUS
- STL
1 stop4h 40m
United Airlines
Deal found 5/12![United Airlines logo]()
$274
This Southwest deal was found by Cheapflights users on 5/11. 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 7/29:55 pm
STL
- AUS
Nonstop2h 00m
Southwest
Tue 7/77:25 am
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 5/11![Southwest logo]()
$278
This Southwest deal was found by Cheapflights users on 5/11. 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.
Wed 6/109:50 pm
STL
- AUS
Nonstop2h 00m
Southwest
Mon 6/157:15 am
AUS
- STL
Nonstop2h 00m
Southwest
Deal found 5/11![Southwest logo]()
$278
This Southwest deal was found by Cheapflights users on 5/13. 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 6/269:55 pm
STL
- AUS
Nonstop2h 00m
Southwest
Mon 6/295:35 am
AUS
- STL
1 stop3h 30m
Southwest
Deal found 5/13![Southwest logo]()
$285
This Southwest deal was found by Cheapflights users on 5/14. 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 6/42:55 pm
STL
- AUS
1 stop4h 25m
Southwest
Mon 6/85:10 pm
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 5/14![Southwest logo]()
$285
Last-minute flights from St. Louis to AustinDiscover last-minute flight deals from St. Louis to Austin. Data last updated May 16, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Austin. Data last updated May 16, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 5/265:25 am
STL
- AUS
1 stop4h 28m
American Airlines
Tue 6/27:50 pm
AUS
- STL
1 stop4h 09m
American Airlines
Deal found 5/12![American Airlines logo]()
$200
This American Airlines deal was found by Cheapflights users on 5/12. 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.
Tue 5/265:25 am
STL
- AUS
1 stop4h 28m
American Airlines
Fri 5/296:22 pm
AUS
- STL
1 stop5h 32m
American Airlines
Deal found 5/12![American Airlines logo]()
$209
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 6/35:25 am
STL
- AUS
1 stop5h 17m
American Airlines
Wed 6/105:01 am
AUS
- STL
1 stop3h 49m
American Airlines
Deal found 5/13![American Airlines logo]()
$191
This Frontier deal was found by Cheapflights users on 5/14. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/49:06 pm
STL
- AUS
1 stop24h 41m
Frontier
Mon 6/810:52 pm
AUS
- STL
1 stop18h 13m
Frontier
Deal found 5/14![Frontier logo]()
$218
This Booking.com deal was found by Cheapflights users on 5/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:03 pm
STL
- AUS
1 stop16h 14m
Frontier
Sun 6/148:15 pm
AUS
- STL
1 stop22h 38m
Frontier
Deal found 5/11![Frontier logo]()
$221
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/107:03 pm
STL
- AUS
2 stops24h 27m
Frontier
Wed 6/176:30 am
AUS
- STL
1 stop12h 53m
Frontier
Deal found 5/13![Frontier logo]()
$229
This American Airlines deal was found by Cheapflights users on 5/13. 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.
Wed 6/105:29 am
STL
- AUS
1 stop4h 33m
American Airlines
Wed 6/176:33 pm
AUS
- STL
1 stop5h 43m
American Airlines
Deal found 5/13![American Airlines logo]()
$230
This Kiwi.com deal was found by Cheapflights users on 5/12. 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 6/265:06 pm
STL
- AUS
1 stop18h 42m
Frontier
Sun 6/285:38 pm
AUS
- STL
1 stop15h 14m
Frontier
Deal found 5/12![Frontier logo]()
$212
One-way flights from St. Louis to AustinSearch for one-way flight options from St. Louis to Austin. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
Search for one-way flight options from St. Louis to Austin. Find affordable one-way fares based on user searches. Data last updated May 16, 2026.
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Tue 8/116:33 pm
STL
- AUS
1 stop18h 05m
Frontier
Deal found 5/13![Frontier logo]()
$70
This Kiwi.com deal was found by Cheapflights users on 5/15. 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.
Tue 7/148:08 pm
STL
- AUS
1 stop27h 59m
Frontier
Deal found 5/15![Frontier logo]()
$82
This United Airlines deal was found by Cheapflights users on 5/13. 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.
Mon 6/86:30 pm
STL
- AUS
1 stop4h 12m
United Airlines
Deal found 5/13![United Airlines logo]()
$96
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 6/55:27 pm
STL
- AUS
1 stop18h 22m
Frontier
Deal found 5/13![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 5/12. 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.
Mon 6/225:06 pm
STL
- AUS
1 stop23h 37m
Frontier
Deal found 5/12![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 5/13. 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 7/96:33 pm
STL
- AUS
1 stop18h 05m
Frontier
Deal found 5/13![Frontier logo]()
$104
This American Airlines deal was found by Cheapflights users on 5/14. 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 6/15:18 pm
STL
- AUS
1 stop5h 24m
American Airlines
Deal found 5/14![American Airlines logo]()
$105
This Super.com deal was found by Cheapflights users on 5/15. 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 6/107:03 pm
STL
- AUS
1 stop16h 14m
Frontier
Deal found 5/15![Frontier logo]()
$110
This Super.com deal was found by Cheapflights users on 5/14. 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.
Tue 6/94:17 pm
STL
- AUS
1 stop17h 35m
Frontier
Deal found 5/14![Frontier logo]()
$114
This Booking.com deal was found by Cheapflights users on 5/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/258:08 pm
STL
- AUS
1 stop27h 59m
Frontier
Deal found 5/12![Frontier logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 5/13. 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.
Sat 6/68:08 pm
STL
- AUS
1 stop13h 35m
Frontier
Deal found 5/13![Frontier logo]()
$121
Find flight deals from St. Louis to Austin
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Austin (AUS). 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 May 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $134 (Kiwi.com) |
One-way from | $70 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $355 |
Good round-trip deal | $279 or less |
Good one-way deal | $258 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Austin 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 2,558,603 searches. Data last updated May 16, 2026.
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
Cheapest round-trip
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Thu 6/4
6:14 am-11:19 am
1 stop5h 05m
Austin Bergstrom
Mon 6/8
6:29 pm-11:57 pm
1 stop5h 28m
$191
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Thu 7/2
6:00 am-11:59 am
1 stop5h 59m
Austin Bergstrom
Tue 7/7
6:40 am-12:11 pm
1 stop5h 31m
$191
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Tue 6/9
8:35 am-1:12 pm
1 stop4h 37m
Austin Bergstrom
Wed 6/10
3:42 pm-11:29 pm
1 stop7h 47m
$271
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Thu 6/25
2:55 pm-7:20 pm
1 stop4h 25m
Austin Bergstrom
Wed 7/15
7:25 am-9:30 am
Nonstop2h 05m
$274
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Sat 8/22
8:00 am-3:26 pm
2 stops7h 26m
Austin Bergstrom
Wed 8/26
5:30 am-10:10 am
1 stop4h 40m
$274
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Sun 7/12
6:00 am-12:15 pm
1 stop6h 15m
Austin Bergstrom
Tue 7/14
3:35 pm-5:40 pm
Nonstop2h 05m
$278
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Mon 8/10
8:45 pm-10:45 pm
Nonstop2h 00m
Austin Bergstrom
Wed 8/12
7:30 am-9:35 am
Nonstop2h 05m
$278
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Thu 7/2
9:55 pm-11:55 pm
Nonstop2h 00m
Austin Bergstrom
Tue 7/7
7:25 am-9:30 am
Nonstop2h 05m
$278
Quickest round-trip
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Wed 6/10
9:50 pm-11:50 pm
Nonstop2h 00m
Austin Bergstrom
Mon 6/15
7:15 am-9:15 am
Nonstop2h 00m
$278
St. LouisAustin
STL - AUS
STLAUS
Lambert-St Louis
Fri 6/26
9:55 pm-11:55 pm
Nonstop2h 00m
Austin Bergstrom
Mon 6/29
5:35 am-9:05 am
1 stop3h 30m
$285
Showing 1-10 of 22 resultsSorted by cheapest first
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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
STL-AUS
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 84 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, September is the cheapest month in which you can book a flight from St. Louis to Austin (average of $248). Flying from St. Louis to Austin in March is currently the most expensive (average of $429). 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?
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 May 16, 2026.
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 26% versus a flight in the afternoon.
Reviews of airlines servicing Austin
Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated May 16, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from St. Louis to Austin. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Comfort
8.0
Boarding
8.1
Crew
8.6
Food
7.0
Overall
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
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.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsCedar Park
Round Rock
San Marcos
Bastrop
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Seguin
Canyon Lake
Horseshoe Bay
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Other flights to Austin
Explore flights to Austin departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
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Complete your trip to Austin by adding a car rental and/or hotel reservation to your travel itinerary.
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St. Louis and Austin flights
Browse other St. Louis and Austin flight options. Last updated on May 16, 2026.
Other flights from St. Louis
Browse through other flights departing from St. Louis. Flights are based on user searches made on Cheapflights and were last updated on May 16, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from St. Louis to Austin
Discover the top 4 airlines that operate flights from St. Louis to Austin. 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 2,558,603 searches. Data last updated May 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$145 | Average$544 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$167 | Average$290 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$176 | Average$350 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$204 | Average$339 | FlexibilityNo cancel fee | On-time63% |