$120+ Cheap flights from San Antonio to St. Louis (SAT - 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 8/22. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Jul 29 — Aug 51
Round-trip
1 adult, Economy
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Cheapest flights from San Antonio to St. LouisExplore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 29, 2026.
Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 29, 2026.
This Trip.com deal was found by Cheapflights users on 6/23. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/14:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Sat 8/88:08 pm
STL
- SAT
1 stop22h 46m
Frontier
Deal found 6/23![Frontier logo]()
$257
This Frontier deal was found by Cheapflights users on 6/26. 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.
Sat 8/84:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Mon 8/107:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Deal found 6/26![Frontier logo]()
$260
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Sat 7/188:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/24![Frontier logo]()
$267
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Sat 8/18:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/27![Frontier logo]()
$271
This Trip.com deal was found by Cheapflights users on 6/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Tue 8/117:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/28![Frontier logo]()
$276
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/109:51 am
SAT
- STL
1 stop14h 08m
Frontier
Tue 8/117:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/27![Frontier logo]()
$281
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Mon 8/37:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Deal found 6/27![Frontier logo]()
$287
This Orbitz deal was found by Cheapflights users on 6/27. 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.
Thu 9/1010:34 pm
SAT
- STL
1 stop13h 17m
Frontier
Sun 9/1312:46 pm
STL
- SAT
1 stop23h 02m
Frontier
Deal found 6/27![Frontier logo]()
$290
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:30 am
SAT
- STL
1 stop4h 40m
United Airlines
Sat 9/266:15 am
STL
- SAT
1 stop4h 28m
United Airlines
Deal found 6/24![United Airlines logo]()
$300
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:57 pm
SAT
- STL
1 stop4h 48m
United Airlines
Mon 8/102:57 pm
STL
- SAT
1 stop5h 00m
United Airlines
Deal found 6/24![United Airlines logo]()
$305
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:08 am
SAT
- STL
1 stop8h 07m
Frontier
Sun 9/208:34 pm
STL
- SAT
1 stop12h 28m
Frontier
Deal found 6/24![Frontier logo]()
$306
Best flights from San Antonio to St. LouisDiscover carefully curated flight deals from San Antonio to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 29, 2026.
Discover carefully curated flight deals from San Antonio to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 29, 2026.
This United Airlines deal was found by Cheapflights users on 6/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:30 am
SAT
- STL
1 stop4h 40m
United Airlines
Sat 9/266:15 am
STL
- SAT
1 stop4h 28m
United Airlines
Deal found 6/24![United Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 6/27. 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 8/86:25 am
SAT
- STL
1 stop5h 31m
Delta
Sat 8/85:33 pm
STL
- SAT
1 stop5h 10m
Delta
Deal found 6/27![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 6/24. 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 8/63:30 pm
SAT
- STL
Nonstop2h 10m
Southwest
Mon 8/108:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/24![Southwest logo]()
$339
This Southwest deal was found by Cheapflights users on 6/24. 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 9/247:20 am
SAT
- STL
Nonstop2h 05m
Southwest
Sat 9/262:05 pm
STL
- SAT
1 stop4h 35m
Southwest
Deal found 6/24![Southwest logo]()
$340
This Southwest deal was found by Cheapflights users on 6/24. 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 9/245:25 am
SAT
- STL
1 stop6h 50m
Southwest
Thu 9/248:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/24![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 6/28. 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 8/204:39 pm
SAT
- STL
1 stop6h 52m
United Airlines
Tue 8/258:00 am
STL
- SAT
2 stops9h 43m
United Airlines
Deal found 6/28![United Airlines logo]()
$396
This United Airlines deal was found by Cheapflights users on 6/26. 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 9/35:30 am
SAT
- STL
1 stop4h 40m
United Airlines
Sun 9/68:00 am
STL
- SAT
2 stops7h 43m
United Airlines
Deal found 6/26![United Airlines logo]()
$401
This Southwest deal was found by Cheapflights users on 6/27. 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 7/255:20 pm
SAT
- STL
2 stops5h 55m
Southwest
Sat 8/11:10 pm
STL
- SAT
2 stops9h 00m
Southwest
Deal found 6/27![Southwest logo]()
$430
This Southwest deal was found by Cheapflights users on 6/27. 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 9/102:05 pm
SAT
- STL
2 stops7h 35m
Southwest
Sun 9/138:25 am
STL
- SAT
2 stops6h 45m
Southwest
Deal found 6/27![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 6/24. 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.
Fri 7/174:50 pm
SAT
- STL
Nonstop2h 10m
Southwest
Mon 7/205:05 am
STL
- SAT
1 stop3h 20m
Southwest
Deal found 6/24![Southwest logo]()
$477
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated June 29, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated June 29, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Sat 8/18:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/27![Frontier logo]()
$323
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Sat 7/188:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/24![Frontier logo]()
$267
This Trip.com deal was found by Cheapflights users on 6/24. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/177:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Mon 7/208:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/24![Frontier logo]()
$313
This Delta deal was found by Cheapflights users on 6/27. 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 7/215:20 am
SAT
- STL
1 stop6h 57m
Delta
Tue 7/286:58 pm
STL
- SAT
1 stop5h 22m
Delta
Deal found 6/27![Delta logo]()
$331
This Trip.com deal was found by Cheapflights users on 6/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/239:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Sun 7/268:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/25![Frontier logo]()
$315
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Sat 8/18:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/27![Frontier logo]()
$271
This Southwest deal was found by Cheapflights users on 6/27. 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 7/257:25 am
SAT
- STL
Nonstop2h 10m
Southwest
Sat 8/14:40 pm
STL
- SAT
1 stop7h 35m
Southwest
Deal found 6/27![Southwest logo]()
$337
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/279:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Mon 8/37:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Deal found 6/27![Frontier logo]()
$287
This Trip.com deal was found by Cheapflights users on 6/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/289:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Tue 8/117:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/28![Frontier logo]()
$276
This Southwest deal was found by Cheapflights users on 6/28. 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 7/287:25 am
SAT
- STL
Nonstop2h 10m
Southwest
Tue 8/118:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/28![Southwest logo]()
$320
One-way flights from San Antonio to St. LouisSearch for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
Search for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 29, 2026.
This Priceline deal was found by Cheapflights users on 6/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/229:51 am
SAT
- STL
1 stop6h 20m
Frontier
Deal found 6/25![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/254:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Deal found 6/24![Frontier logo]()
$125
This Priceline deal was found by Cheapflights users on 6/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2411:08 am
SAT
- STL
1 stop8h 07m
Frontier
Deal found 6/26![Frontier logo]()
$129
This Trip.com deal was found by Cheapflights users on 6/26. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/2410:24 pm
SAT
- STL
1 stop19h 26m
Frontier
Deal found 6/26![Frontier logo]()
$133
This Trip.com deal was found by Cheapflights users on 6/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:24 pm
SAT
- STL
1 stop19h 26m
Frontier
Deal found 6/27![Frontier logo]()
$138
This Frontier deal was found by Cheapflights users on 6/24. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/184:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Deal found 6/24![Frontier logo]()
$141
This Kiwi.com deal was found by Cheapflights users on 6/24. 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.
Tue 7/217:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/24![Frontier logo]()
$143
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 8/194:53 pm
SAT
- STL
3 stops24h 29m
Multiple Airlines
Deal found 6/25![Multiple Airlines logo]()
$152
This American Airlines deal was found by Cheapflights users on 6/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/66:52 pm
SAT
- STL
1 stop5h 22m
American Airlines
Deal found 6/24![American Airlines logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 6/25. 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 8/268:26 pm
SAT
- STL
2 stops20h 56m
Frontier
Deal found 6/25![Frontier logo]()
$155
Find flight deals from San Antonio to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) 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 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $260 (Frontier) |
One-way from | $120 (Priceline) |
Popular in | November |
Cheapest in | August |
Average price | $549 |
Good round-trip deal | $351 or less |
Good one-way deal | $213 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio 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 29, 2026.
Use the filters below to find and compare flights from San Antonio to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 9/24
5:30 am-10:10 am
1 stop4h 40m
Lambert-St Louis
Sat 9/26
6:15 am-10:43 am
1 stop4h 28m
$300
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 8/8
6:25 am-11:56 am
1 stop5h 31m
Lambert-St Louis
Sat 8/8
5:33 pm-10:43 pm
1 stop5h 10m
$319
Quickest round-trip
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 8/6
3:30 pm-5:40 pm
Nonstop2h 10m
Lambert-St Louis
Mon 8/10
8:45 pm-10:55 pm
Nonstop2h 10m
$339
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 9/24
7:20 am-9:25 am
Nonstop2h 05m
Lambert-St Louis
Sat 9/26
2:05 pm-6:40 pm
1 stop4h 35m
$340
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 9/24
5:25 am-12:15 pm
1 stop6h 50m
Lambert-St Louis
Thu 9/24
8:45 pm-10:55 pm
Nonstop2h 10m
$349
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 8/20
4:39 pm-11:31 pm
1 stop6h 52m
Lambert-St Louis
Tue 8/25
8:00 am-5:43 pm
2 stops9h 43m
$396
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 9/3
5:30 am-10:10 am
1 stop4h 40m
Lambert-St Louis
Sun 9/6
8:00 am-3:43 pm
2 stops7h 43m
$401
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 7/25
5:20 pm-11:15 pm
2 stops5h 55m
Lambert-St Louis
Sat 8/1
1:10 pm-10:10 pm
2 stops9h 00m
$430
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 9/10
2:05 pm-9:40 pm
2 stops7h 35m
Lambert-St Louis
Sun 9/13
8:25 am-3:10 pm
2 stops6h 45m
$444
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 7/17
4:50 pm-7:00 pm
Nonstop2h 10m
Lambert-St Louis
Mon 7/20
5:05 am-8:25 am
1 stop3h 20m
$477
Showing 1-10 of 19 resultsSorted by cheapest first
Compare providers for flights from San Antonio 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 San Antonio 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 Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Antonio-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Antonio-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Antonio-St. Louis flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Antonio-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 San Antonio-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 San Antonio to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from San Antonio with our price prediction graph.
SAT-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 San Antonio to St. Louis
What is the cheapest month to book a flight from San Antonio to St. Louis?
Currently, August is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $248). Flying from San Antonio to St. Louis in November is currently the most expensive (average of $558). 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 SAT to STL?
Find hourly flight availability from San Antonio 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 29, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Antonio to St. Louis as you normally would.
The best insider tips for San Antonio to St. Louis flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to St. Louis trip
Our travel experts
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 29, 2026.
See what other customers who have flown with Southwest,United Airlines, andAmerican Airlines from San Antonio to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Food
7.0
Boarding
8.1
Overall
7.9
Entertainment
7.5
Comfort
8.0
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Related info for your journey
Find useful and relevant information for your journey from San Antonio 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
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San Antonio and St. Louis flights
Browse other San Antonio and St. Louis flight options. Last updated on June 29, 2026.
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Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on June 29, 2026.
Top 4 airlines flying from San Antonio to St. Louis
Discover the top 4 airlines that operate flights from San Antonio 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 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$196 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$226 | Average$377 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$298 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$266 | Average$457 | FlexibilityNo cancel fee | On-time63% |