$109+ Cheap flights from St. Louis to San Antonio (STL - SAT)
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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SAT
Jul 9 — Jul 161
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to San Antonio 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
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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 San Antonio are usually found in January or September, booked 90 days in advance, depart on a Saturday or Thursday and return on a Wednesday
Cheap flight deals from St. Louis to San Antonio
Cheapest
Best
Last-minute
One-way
Cheapest flights from St. Louis to San AntonioExplore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
Explore the most affordable flight options available from St. Louis to San Antonio. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 9, 2026.
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.
Tue 9/228:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Tue 9/293:30 pm
SAT
- STL
Nonstop2h 10m
Southwest
Deal found 6/7![Southwest logo]()
$251
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Tue 7/217:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/8![Frontier logo]()
$268
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Tue 7/79:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Deal found 6/8![Frontier logo]()
$273
This CheapOair deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Thu 7/99:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Deal found 6/4![Frontier logo]()
$278
This Mytrip deal was found by Cheapflights users on 6/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Mon 7/279:51 am
SAT
- STL
1 stop14h 08m
Frontier
Deal found 6/5![Frontier logo]()
$279
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Thu 7/309:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Deal found 6/6![Frontier logo]()
$299
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1812:46 pm
STL
- SAT
1 stop8h 53m
Frontier
Mon 9/2110:34 pm
SAT
- STL
1 stop13h 17m
Frontier
Deal found 6/8![Frontier logo]()
$308
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.
Sat 10/242:00 pm
STL
- SAT
Nonstop2h 10m
Southwest
Tue 10/2712:00 pm
SAT
- STL
1 stop3h 35m
Southwest
Deal found 6/8![Southwest logo]()
$309
Best flights from St. Louis to San AntonioDiscover carefully curated flight deals from St. Louis to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
Discover carefully curated flight deals from St. Louis to San Antonio that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 9, 2026.
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.
Sat 10/242:00 pm
STL
- SAT
Nonstop2h 10m
Southwest
Tue 10/2712:00 pm
SAT
- STL
1 stop3h 35m
Southwest
Deal found 6/8![Southwest logo]()
$309
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/243:11 pm
STL
- SAT
2 stops7h 40m
United Airlines
Tue 10/2712:24 pm
SAT
- STL
1 stop4h 11m
United Airlines
Deal found 6/8![United Airlines logo]()
$320
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:00 am
STL
- SAT
1 stop8h 31m
United Airlines
Tue 9/19:10 am
SAT
- STL
1 stop7h 24m
United Airlines
Deal found 6/8![United Airlines logo]()
$395
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.
Fri 8/78:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Mon 8/107:20 am
SAT
- STL
Nonstop2h 05m
Southwest
Deal found 6/8![Southwest logo]()
$403
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.
Sun 9/68:05 pm
STL
- SAT
Nonstop2h 10m
Southwest
Fri 9/1112:20 pm
SAT
- STL
1 stop5h 35m
Southwest
Deal found 6/7![Southwest logo]()
$418
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 7/16:15 pm
STL
- SAT
1 stop5h 40m
Southwest
Sat 7/410:40 am
SAT
- STL
2 stops7h 00m
Southwest
Deal found 6/8![Southwest logo]()
$422
This Southwest deal was found by Cheapflights users on 6/4. 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 6/268:10 am
STL
- SAT
Nonstop2h 05m
Southwest
Wed 7/13:35 pm
SAT
- STL
Nonstop2h 10m
Southwest
Deal found 6/4![Southwest logo]()
$439
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.
Fri 9/118:30 am
STL
- SAT
2 stops6h 50m
Southwest
Wed 9/167:35 am
SAT
- STL
1 stop5h 05m
Southwest
Deal found 6/7![Southwest logo]()
$444
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 7/288:35 am
STL
- SAT
2 stops6h 00m
Southwest
Thu 7/308:05 pm
SAT
- STL
1 stop4h 35m
Southwest
Deal found 6/6![Southwest logo]()
$444
This Southwest deal was found by Cheapflights users on 6/4. 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 10/178:30 am
STL
- SAT
2 stops6h 50m
Southwest
Sat 10/248:40 am
SAT
- STL
2 stops7h 55m
Southwest
Deal found 6/4![Southwest logo]()
$447
Last-minute flights from St. Louis to San AntonioDiscover last-minute flight deals from St. Louis to San Antonio. Data last updated June 9, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to San Antonio. Data last updated June 9, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/5. 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 6/306:31 pm
STL
- SAT
2 stops24h 25m
Frontier
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/5![Frontier logo]()
$353
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/18:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Sun 7/57:43 pm
SAT
- STL
1 stop23h 40m
Frontier
Deal found 6/7![Frontier logo]()
$323
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Tue 7/79:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Deal found 6/8![Frontier logo]()
$273
This CheapOair deal was found by Cheapflights users on 6/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/24:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Thu 7/99:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Deal found 6/4![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/4. 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.
Fri 7/34:17 pm
STL
- SAT
1 stop23h 10m
Frontier
Sun 7/57:43 pm
SAT
- STL
1 stop23h 40m
Frontier
Deal found 6/4![Frontier logo]()
$368
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/108:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Mon 7/139:51 am
SAT
- STL
1 stop14h 08m
Frontier
Deal found 6/8![Frontier logo]()
$328
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Tue 7/217:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/8![Frontier logo]()
$268
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/188:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Fri 7/317:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/7![Frontier logo]()
$349
This Mytrip deal was found by Cheapflights users on 6/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/208:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Mon 7/279:51 am
SAT
- STL
1 stop14h 08m
Frontier
Deal found 6/5![Frontier logo]()
$279
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Sun 7/269:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Deal found 6/8![Frontier logo]()
$378
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/288:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Thu 7/309:32 pm
SAT
- STL
1 stop20h 43m
Frontier
Deal found 6/6![Frontier logo]()
$299
This CheapOair deal was found by Cheapflights users on 6/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/317:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Fri 10/2310:41 pm
SAT
- STL
1 stop26h 36m
Frontier
Deal found 6/5![Frontier logo]()
$373
One-way flights from St. Louis to San AntonioSearch for one-way flight options from St. Louis to San Antonio. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
Search for one-way flight options from St. Louis to San Antonio. Find affordable one-way fares based on user searches. Data last updated June 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 9/18:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 6/4![Frontier logo]()
$109
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.
Tue 8/48:40 am
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/7![Southwest logo]()
$126
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/46:00 am
STL
- SAT
1 stop5h 10m
Delta
Deal found 6/8![Delta logo]()
$129
This Frontier deal was found by Cheapflights users on 6/4. 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 7/212:11 pm
STL
- SAT
1 stop8h 00m
Frontier
Deal found 6/4![Frontier logo]()
$134
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 8/1910:15 am
STL
- SAT
2 stops6h 35m
Southwest
Deal found 6/8![Southwest logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 8/47:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/4![Frontier logo]()
$138
This Trip.com deal was found by Cheapflights users on 6/4. 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 7/17:46 pm
STL
- SAT
1 stop24h 25m
Frontier
Deal found 6/4![Frontier logo]()
$139
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/68:08 pm
STL
- SAT
1 stop22h 46m
Frontier
Deal found 6/8![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 6/4. 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 6/308:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 6/4![Frontier logo]()
$147
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:10 pm
STL
- SAT
1 stop16h 46m
Frontier
Deal found 6/6![Frontier logo]()
$149
Find flight deals from St. Louis to San Antonio
Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to San Antonio (SAT). 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 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $251 (Southwest) |
One-way from | $109 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $365 |
Good round-trip deal | $439 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to San Antonio 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 9, 2026.
Use the filters below to find and compare flights from St. Louis to San Antonio that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Sat 10/24
2:00 pm-4:10 pm
Nonstop2h 10m
San Antonio
Tue 10/27
12:00 pm-3:35 pm
1 stop3h 35m
$309
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Sat 10/24
3:11 pm-10:51 pm
2 stops7h 40m
San Antonio
Tue 10/27
12:24 pm-4:35 pm
1 stop4h 11m
$320
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Sat 8/29
8:00 am-4:31 pm
1 stop8h 31m
San Antonio
Tue 9/1
9:10 am-4:34 pm
1 stop7h 24m
$395
Quickest round-trip
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Fri 8/7
8:45 pm-10:55 pm
Nonstop2h 10m
San Antonio
Mon 8/10
7:20 am-9:25 am
Nonstop2h 05m
$403
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Sun 9/6
8:05 pm-10:15 pm
Nonstop2h 10m
San Antonio
Fri 9/11
12:20 pm-5:55 pm
1 stop5h 35m
$418
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Wed 7/1
6:15 pm-11:55 pm
1 stop5h 40m
San Antonio
Sat 7/4
10:40 am-5:40 pm
2 stops7h 00m
$422
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Fri 6/26
8:10 am-10:15 am
Nonstop2h 05m
San Antonio
Wed 7/1
3:35 pm-5:45 pm
Nonstop2h 10m
$439
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Fri 9/11
8:30 am-3:20 pm
2 stops6h 50m
San Antonio
Wed 9/16
7:35 am-12:40 pm
1 stop5h 05m
$444
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Tue 7/28
8:35 am-2:35 pm
2 stops6h 00m
San Antonio
Thu 7/30
8:05 pm-12:40 am
1 stop4h 35m
$444
St. LouisSan Antonio
STL - SAT
STLSAT
Lambert-St Louis
Sat 10/17
8:30 am-3:20 pm
2 stops6h 50m
San Antonio
Sat 10/24
8:40 am-4:35 pm
2 stops7h 55m
$447
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from St. Louis to San Antonio
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 San Antonio 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 | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on St. Louis-San Antonio flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-San Antonio flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-San Antonio flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on St. Louis-San Antonio 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-San Antonio 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 San Antonio
Have a flexible travel schedule? Discover the best time to fly to San Antonio from St. Louis with our price prediction graph.
STL-SAT
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 San Antonio
How far ahead should I book a flight from St. Louis to San Antonio?
Booking 89 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to San Antonio. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from St. Louis to San Antonio?
Currently, August is the cheapest month in which you can book a flight from St. Louis to San Antonio (average of $277). Flying from St. Louis to San Antonio in July is currently the most expensive (average of $417). 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 SAT?
Find hourly flight availability from St. Louis to San Antonio. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 9, 2026.
When flying from St. Louis to San Antonio, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 54% versus a flight at noon.
Reviews of airlines servicing San Antonio
Get insights into the airlines that provide service to San Antonio. 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 San Antonio. Reviews last updated June 9, 2026.
Read through reviews of airlines operating flights from St. Louis to San Antonio, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
Reviews
1 / 20
2.0
MediocreMike,Aug 2025
OKC - AUS
Entertainment
7.5
Food
7.0
Comfort
8.0
Crew
8.6
Overall
7.9
Boarding
8.1
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 San Antonio. 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 San Antonio?
Book flights to San Antonio if you plan to visit one of these locationsNew Braunfels
Kerrville
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St. Louis and San Antonio flights
Browse other St. Louis and San Antonio flight options. Last updated on June 9, 2026.
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Top 5 airlines flying from St. Louis to San Antonio
Discover the top 5 airlines that operate flights from St. Louis to San Antonio. 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 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$111 | Average$268 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$153 | Average$241 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$198 | Average$339 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$328 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$266 | Average$403 | FlexibilityNo cancel fee | On-time63% |