$82+ 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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — STL
Jul 11 — Jul 181
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 October or May, booked 58 days in advance, depart on a Friday or Tuesday 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 June 11, 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 June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/121:33 pm
AUS
- STL
1 stop28h 04m
Frontier
Wed 8/265:33 pm
STL
- AUS
1 stop23h 10m
Frontier
Deal found 6/8![Frontier logo]()
$170
This Southwest deal was found by Cheapflights users on 6/8. 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 8/127:30 am
AUS
- STL
Nonstop2h 05m
Southwest
Wed 8/268:25 am
STL
- AUS
Nonstop2h 00m
Southwest
Deal found 6/8![Southwest logo]()
$174
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 9/512:44 pm
AUS
- STL
1 stop28h 46m
Frontier
Thu 9/1010:35 am
STL
- AUS
1 stop23h 13m
Frontier
Deal found 6/9![Frontier logo]()
$184
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/165:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Tue 7/216:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/7![Frontier logo]()
$190
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Sat 8/85:00 am
AUS
- STL
1 stop4h 24m
American Airlines
Tue 8/116:00 am
STL
- AUS
1 stop4h 51m
American Airlines
Deal found 6/10![American Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 8/71:33 pm
AUS
- STL
1 stop19h 24m
Frontier
Mon 8/104:57 pm
STL
- AUS
1 stop23h 42m
Frontier
Deal found 6/8![Frontier logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/215:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Tue 7/286:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/9![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/131:33 pm
AUS
- STL
1 stop28h 04m
Frontier
Sun 7/266:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/9![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/65:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Mon 8/104:57 pm
STL
- AUS
1 stop23h 42m
Frontier
Deal found 6/7![Frontier logo]()
$204
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 June 11, 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 June 11, 2026.
This Southwest deal was found by Cheapflights users on 6/9. 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 8/127:30 am
AUS
- STL
Nonstop2h 05m
Southwest
Wed 8/265:30 pm
STL
- AUS
1 stop4h 15m
Southwest
Deal found 6/9![Southwest logo]()
$178
This Delta deal was found by Cheapflights users on 6/10. 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.
Fri 7/104:55 pm
AUS
- STL
1 stop5h 20m
Delta
Wed 7/157:08 am
STL
- AUS
1 stop6h 46m
Delta
Deal found 6/10![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/189:00 am
AUS
- STL
1 stop6h 38m
United Airlines
Wed 8/196:15 am
STL
- AUS
1 stop4h 51m
United Airlines
Deal found 6/10![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 6/9. 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 8/57:30 am
AUS
- STL
Nonstop2h 05m
Southwest
Sun 8/93:20 pm
STL
- AUS
1 stop5h 40m
Southwest
Deal found 6/9![Southwest logo]()
$245
This Southwest deal was found by Cheapflights users on 6/7. 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 8/63:50 pm
AUS
- STL
Nonstop2h 05m
Southwest
Mon 8/103:45 pm
STL
- AUS
Nonstop2h 00m
Southwest
Deal found 6/7![Southwest logo]()
$261
This Delta deal was found by Cheapflights users on 6/10. 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.
Fri 7/104:55 pm
AUS
- STL
1 stop6h 58m
Delta
Mon 7/136:58 pm
STL
- AUS
1 stop5h 20m
Delta
Deal found 6/10![Delta logo]()
$289
This Southwest deal was found by Cheapflights users on 6/9. 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 7/205:35 am
AUS
- STL
1 stop3h 30m
Southwest
Wed 7/2212:40 pm
STL
- AUS
1 stop3h 45m
Southwest
Deal found 6/9![Southwest logo]()
$274
This Southwest deal was found by Cheapflights users on 6/7. 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.
Sat 7/412:30 pm
AUS
- STL
Nonstop2h 05m
Southwest
Mon 7/67:10 pm
STL
- AUS
1 stop5h 40m
Southwest
Deal found 6/7![Southwest logo]()
$289
This Southwest deal was found by Cheapflights users on 6/6. 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.
Tue 7/143:35 pm
AUS
- STL
Nonstop2h 05m
Southwest
Fri 7/246:50 pm
STL
- AUS
1 stop5h 05m
Southwest
Deal found 6/6![Southwest logo]()
$293
This Southwest deal was found by Cheapflights users on 6/9. 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 8/2811:40 am
AUS
- STL
Nonstop2h 05m
Southwest
Sun 8/308:30 am
STL
- AUS
Nonstop2h 00m
Southwest
Deal found 6/9![Southwest logo]()
$298
This Southwest deal was found by Cheapflights users on 6/10. 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 7/135:35 am
AUS
- STL
1 stop3h 30m
Southwest
Fri 7/179:55 pm
STL
- AUS
Nonstop2h 00m
Southwest
Deal found 6/10![Southwest logo]()
$329
Last-minute flights from Austin to St. LouisDiscover last-minute flight deals from Austin to St. Louis. Data last updated June 11, 2026 and is based on user searches.
Discover last-minute flight deals from Austin to St. Louis. Data last updated June 11, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 6/7. 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 6/295:52 pm
AUS
- STL
1 stop6h 07m
American Airlines
Tue 7/75:32 am
STL
- AUS
1 stop4h 16m
American Airlines
Deal found 6/7![American Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 6/305:38 pm
AUS
- STL
1 stop15h 14m
Frontier
Fri 7/35:06 pm
STL
- AUS
1 stop18h 42m
Frontier
Deal found 6/9![Frontier logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/101:33 pm
AUS
- STL
1 stop19h 24m
Frontier
Mon 7/134:57 pm
STL
- AUS
1 stop23h 42m
Frontier
Deal found 6/9![Frontier logo]()
$235
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/131:33 pm
AUS
- STL
1 stop28h 04m
Frontier
Sun 7/266:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/9![Frontier logo]()
$202
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/131:33 pm
AUS
- STL
1 stop28h 04m
Multiple Airlines
Sat 7/257:10 pm
STL
- AUS
1 stop15h 49m
Multiple Airlines
Deal found 6/9![Multiple Airlines logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/132:25 pm
AUS
- STL
1 stop28h 58m
Frontier
Mon 7/274:57 pm
STL
- AUS
1 stop23h 42m
Frontier
Deal found 6/10![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/146:30 am
AUS
- STL
1 stop12h 53m
Frontier
Wed 7/158:08 pm
STL
- AUS
1 stop27h 59m
Frontier
Deal found 6/10![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 6/6. 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 7/165:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Tue 7/216:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/6![Frontier logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 7/215:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Tue 7/286:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/9![Frontier logo]()
$200
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/215:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Sun 7/266:34 pm
STL
- AUS
1 stop18h 04m
Frontier
Deal found 6/8![Frontier logo]()
$233
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 7/305:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Sat 8/88:08 pm
STL
- AUS
1 stop27h 59m
Frontier
Deal found 6/7![Frontier logo]()
$222
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 June 11, 2026.
Search for one-way flight options from Austin to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 11, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/9. 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 8/45:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Deal found 6/9![Frontier logo]()
$82
This Southwest deal was found by Cheapflights users on 6/11. 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.
Tue 9/87:30 am
AUS
- STL
Nonstop2h 05m
Southwest
Deal found 6/11![Southwest logo]()
$87
This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/95:40 am
AUS
- STL
1 stop7h 13m
Delta
Deal found 6/11![Delta logo]()
$91
This Kiwi.com deal was found by Cheapflights users on 6/7. 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 8/31:33 pm
AUS
- STL
1 stop28h 04m
Frontier
Deal found 6/7![Frontier logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 9/512:44 pm
AUS
- STL
1 stop28h 46m
Frontier
Deal found 6/10![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 7/75:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Deal found 6/8![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 6/8. 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 9/1110:50 am
AUS
- STL
1 stop22h 50m
Frontier
Deal found 6/8![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 6/9. 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.
Sun 8/95:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Deal found 6/9![Frontier logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 7/95:34 pm
AUS
- STL
1 stop15h 23m
Frontier
Deal found 6/10![Frontier logo]()
$106
This American Airlines deal was found by Cheapflights users on 6/9. 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.
Thu 8/65:00 am
AUS
- STL
1 stop4h 24m
American Airlines
Deal found 6/9![American Airlines logo]()
$107
This Kiwi.com deal was found by Cheapflights users on 6/8. 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.
Sun 8/235:49 pm
AUS
- STL
1 stop15h 03m
Frontier
Deal found 6/8![Frontier 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 June 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $170 (Kiwi.com) |
One-way from | $82 (Kiwi.com) |
Popular in | March |
Cheapest in | October |
Average price | $354 |
Good round-trip deal | $338 or less |
Good one-way deal | $222 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 2,558,603 searches. Data last updated June 11, 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 - STL
AUSSTL
Austin Bergstrom
Wed 8/12
7:30 am-9:35 am
Nonstop2h 05m
Lambert-St Louis
Wed 8/26
5:30 pm-9:45 pm
1 stop4h 15m
$178
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Wed 8/5
7:30 am-9:35 am
Nonstop2h 05m
Lambert-St Louis
Sun 8/9
3:20 pm-9:00 pm
1 stop5h 40m
$245
Quickest round-trip
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Thu 8/6
3:50 pm-5:55 pm
Nonstop2h 05m
Lambert-St Louis
Mon 8/10
3:45 pm-5:45 pm
Nonstop2h 00m
$261
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Mon 7/20
5:35 am-9:05 am
1 stop3h 30m
Lambert-St Louis
Wed 7/22
12:40 pm-4:25 pm
1 stop3h 45m
$274
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Fri 7/10
4:55 pm-10:15 pm
1 stop5h 20m
Lambert-St Louis
Wed 7/15
7:08 am-1:54 pm
1 stop6h 46m
$279
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Fri 7/10
4:55 pm-11:53 pm
1 stop6h 58m
Lambert-St Louis
Mon 7/13
6:58 pm-12:18 am
1 stop5h 20m
$289
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Sat 7/4
12:30 pm-2:35 pm
Nonstop2h 05m
Lambert-St Louis
Mon 7/6
7:10 pm-12:50 am
1 stop5h 40m
$289
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Tue 8/18
9:00 am-3:38 pm
1 stop6h 38m
Lambert-St Louis
Wed 8/19
6:15 am-11:06 am
1 stop4h 51m
$293
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Tue 7/14
3:35 pm-5:40 pm
Nonstop2h 05m
Lambert-St Louis
Fri 7/24
6:50 pm-11:55 pm
1 stop5h 05m
$293
AustinSt. Louis
AUS - STL
AUSSTL
Austin Bergstrom
Fri 8/28
11:40 am-1:45 pm
Nonstop2h 05m
Lambert-St Louis
Sun 8/30
8:30 am-10:30 am
Nonstop2h 00m
$298
Showing 1-10 of 22 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 June.
| 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 | |
| Price Accuracy3 stars | 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 57 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, October is the cheapest month in which you can book a flight from Austin to St. Louis (average of $268). Flying from Austin to St. Louis in March is currently the most expensive (average of $394). 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 June 11, 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 June 11, 2026.
Read through reviews of airlines operating flights from Austin to St. Louis, such as Southwest,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Entertainment
7.5
Boarding
8.1
Food
7.0
Crew
8.6
Overall
7.9
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
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 locationsEdwardsville
O'Fallon
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington
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
Complete your trip
Flights by cabin class
Other flight options
Other flights from Austin
Popular flights
St. Louis flight routes
Alternative routes for Austin to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Austin to St. Louis by cabin class
Find flights from Austin to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Austin and St. Louis flights
Browse other Austin and St. Louis flight options. Last updated on June 11, 2026.
Other flights from Austin
Browse through other flights departing from Austin. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 11, 2026.
Top 4 airlines flying from Austin to St. Louis
Discover the top 4 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 2,558,603 searches. Data last updated June 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$190 | Average$313 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$195 | Average$229 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$208 | Average$348 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$254 | Average$388 | FlexibilityNo cancel fee | On-time71% |