$83+ 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 3/10. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Mar 14 — Mar 211
1 adult, Economy
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Find cheap flights from San Antonio 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 San Antonio to Lambert-St Louis are usually found in August or April, booked 85 days in advance, depart on a Monday or Thursday and return on a Saturday
Cheap flight deals from San Antonio to St. Louis
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Best
Last-minute
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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 February 12, 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 February 12, 2026.
This Expedia deal was found by Cheapflights users on 2/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/153:14 pm
SAT
- STL
1 stop27h 58m
Frontier
Sun 5/179:55 pm
STL
- SAT
1 stop13h 45m
Frontier
Deal found 2/11![Frontier logo]()
$160
This Expedia deal was found by Cheapflights users on 2/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:20 pm
SAT
- STL
1 stop16h 49m
Frontier
Thu 3/510:11 pm
STL
- SAT
1 stop12h 29m
Frontier
Deal found 2/10![Frontier logo]()
$179
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 4/106:02 pm
SAT
- STL
1 stop4h 25m
United Airlines
Mon 4/136:00 am
STL
- SAT
1 stop4h 50m
United Airlines
Deal found 2/10![United Airlines logo]()
$192
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:23 am
SAT
- STL
1 stop6h 50m
American Airlines
Thu 3/195:12 am
STL
- SAT
1 stop4h 21m
American Airlines
Deal found 2/11![American Airlines logo]()
$197
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Mon 4/134:17 pm
SAT
- STL
1 stop6h 11m
United Airlines
Wed 4/157:45 am
STL
- SAT
2 stops8h 01m
United Airlines
Deal found 2/12![United Airlines logo]()
$202
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 2/251:18 pm
SAT
- STL
1 stop7h 08m
United Airlines
Fri 2/272:45 pm
STL
- SAT
1 stop6h 11m
United Airlines
Deal found 2/10![United Airlines logo]()
$205
This Delta deal was found by Cheapflights users on 2/10. 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.
Thu 8/205:30 am
SAT
- STL
1 stop7h 23m
Delta
Tue 8/257:20 am
STL
- SAT
1 stop7h 56m
Delta
Deal found 2/10![Delta logo]()
$207
This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:36 pm
SAT
- STL
1 stop22h 17m
Frontier
Fri 2/273:49 pm
STL
- SAT
1 stop21h 29m
Frontier
Deal found 2/11![Frontier logo]()
$213
This United Airlines deal was found by Cheapflights users on 2/11. 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 5/215:30 am
SAT
- STL
1 stop4h 23m
United Airlines
Sun 5/2410:23 am
STL
- SAT
1 stop5h 37m
United Airlines
Deal found 2/11![United Airlines logo]()
$215
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:45 am
SAT
- STL
1 stop27h 04m
Frontier
Thu 3/198:06 pm
STL
- SAT
1 stop14h 34m
Frontier
Deal found 2/12![Frontier logo]()
$218
This Trip.com deal was found by Cheapflights users on 2/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:22 pm
SAT
- STL
1 stop17h 34m
Frontier
Sun 2/223:49 pm
STL
- SAT
1 stop21h 23m
Frontier
Deal found 2/10![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/163:34 pm
SAT
- STL
1 stop27h 38m
Frontier
Mon 5/188:12 pm
STL
- SAT
1 stop18h 07m
Frontier
Deal found 2/11![Frontier logo]()
$226
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 February 12, 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 February 12, 2026.
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 4/106:02 pm
SAT
- STL
1 stop4h 25m
United Airlines
Mon 4/136:00 am
STL
- SAT
1 stop4h 50m
United Airlines
Deal found 2/10![United Airlines logo]()
$192
This Delta deal was found by Cheapflights users on 2/11. 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.
Mon 5/186:10 pm
SAT
- STL
1 stop5h 11m
Delta
Fri 5/227:09 pm
STL
- SAT
1 stop5h 31m
Delta
Deal found 2/11![Delta logo]()
$207
This CheapOair deal was found by Cheapflights users on 2/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/143:14 pm
SAT
- STL
1 stop27h 58m
Frontier
Sun 5/179:55 pm
STL
- SAT
1 stop13h 45m
Frontier
Deal found 2/10![Frontier logo]()
$213
This Southwest deal was found by Cheapflights users on 2/12. 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 4/134:25 pm
SAT
- STL
1 stop4h 30m
Southwest
Wed 4/158:55 pm
STL
- SAT
Nonstop2h 20m
Southwest
Deal found 2/12![Southwest logo]()
$237
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Sat 5/26:02 pm
SAT
- STL
1 stop4h 28m
United Airlines
Tue 5/57:45 am
STL
- SAT
2 stops7h 54m
United Airlines
Deal found 2/11![United Airlines logo]()
$202
This Delta deal was found by Cheapflights users on 2/11. 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.
Fri 4/246:12 pm
SAT
- STL
1 stop5h 01m
Delta
Mon 4/274:41 pm
STL
- SAT
1 stop7h 53m
Delta
Deal found 2/11![Delta logo]()
$207
This United Airlines deal was found by Cheapflights users on 2/12. 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.
Mon 4/134:17 pm
SAT
- STL
1 stop6h 11m
United Airlines
Wed 4/157:45 am
STL
- SAT
2 stops8h 01m
United Airlines
Deal found 2/12![United Airlines logo]()
$202
This Frontier deal was found by Cheapflights users on 2/11. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/159:34 pm
SAT
- STL
1 stop13h 45m
Frontier
Sat 3/218:12 pm
STL
- SAT
1 stop12h 54m
Frontier
Deal found 2/11![Frontier logo]()
$230
This Southwest deal was found by Cheapflights users on 2/11. 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.
Fri 5/153:20 pm
SAT
- STL
1 stop6h 45m
Southwest
Sat 5/165:15 am
STL
- SAT
1 stop7h 10m
Southwest
Deal found 2/11![Southwest logo]()
$237
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1310:05 am
SAT
- STL
1 stop23h 44m
Frontier
Fri 3/208:12 pm
STL
- SAT
1 stop28h 05m
Frontier
Deal found 2/12![Frontier logo]()
$230
This Delta deal was found by Cheapflights users on 2/10. 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.
Thu 6/186:45 am
SAT
- STL
1 stop6h 09m
Delta
Wed 6/247:20 am
STL
- SAT
1 stop6h 26m
Delta
Deal found 2/10![Delta logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Fri 4/106:45 am
SAT
- STL
2 stops29h 36m
Frontier
Mon 4/138:16 pm
STL
- SAT
1 stop18h 03m
Frontier
Deal found 2/10![Frontier logo]()
$235
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated February 12, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated February 12, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 2/134:12 pm
SAT
- STL
1 stop6h 02m
United Airlines
Sun 2/156:00 am
STL
- SAT
1 stop4h 47m
United Airlines
Deal found 2/10![United Airlines logo]()
$272
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Fri 2/131:18 pm
SAT
- STL
1 stop7h 08m
United Airlines
Mon 2/168:41 am
STL
- SAT
1 stop8h 14m
United Airlines
Deal found 2/10![United Airlines logo]()
$277
This Trip.com deal was found by Cheapflights users on 2/10. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/208:22 pm
SAT
- STL
1 stop17h 34m
Frontier
Sun 2/223:49 pm
STL
- SAT
1 stop21h 23m
Frontier
Deal found 2/10![Frontier logo]()
$219
This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:36 pm
SAT
- STL
1 stop22h 17m
Frontier
Fri 2/273:49 pm
STL
- SAT
1 stop21h 29m
Frontier
Deal found 2/11![Frontier logo]()
$213
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Wed 2/251:18 pm
SAT
- STL
1 stop7h 08m
United Airlines
Fri 2/272:45 pm
STL
- SAT
1 stop6h 11m
United Airlines
Deal found 2/10![United Airlines logo]()
$205
This Expedia deal was found by Cheapflights users on 2/10. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/268:20 pm
SAT
- STL
1 stop16h 49m
Frontier
Thu 3/510:11 pm
STL
- SAT
1 stop12h 29m
Frontier
Deal found 2/10![Frontier logo]()
$179
This CheapOair deal was found by Cheapflights users on 2/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/51:57 pm
SAT
- STL
1 stop17h 05m
Frontier
Sun 3/86:19 pm
STL
- SAT
1 stop16h 21m
Frontier
Deal found 2/11![Frontier logo]()
$241
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/126:45 am
SAT
- STL
1 stop27h 04m
Frontier
Thu 3/198:06 pm
STL
- SAT
1 stop14h 34m
Frontier
Deal found 2/12![Frontier logo]()
$218
This Expedia deal was found by Cheapflights users on 2/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/1310:05 am
SAT
- STL
1 stop23h 44m
Frontier
Fri 3/208:12 pm
STL
- SAT
1 stop28h 05m
Frontier
Deal found 2/12![Frontier logo]()
$230
This American Airlines deal was found by Cheapflights users on 2/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1710:23 am
SAT
- STL
1 stop6h 50m
American Airlines
Thu 3/195:12 am
STL
- SAT
1 stop4h 21m
American Airlines
Deal found 2/11![American Airlines logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/172:08 pm
SAT
- STL
2 stops20h 29m
Frontier
Thu 3/198:06 pm
STL
- SAT
1 stop14h 34m
Frontier
Deal found 2/11![Frontier logo]()
$254
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 February 12, 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 February 12, 2026.
This Trip.com deal was found by Cheapflights users on 2/11. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/106:00 am
SAT
- STL
1 stop17h 19m
Multiple Airlines
Deal found 2/11![Multiple Airlines logo]()
$83
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 5/83:14 pm
SAT
- STL
1 stop27h 58m
Frontier
Deal found 2/9![Frontier logo]()
$84
This Frontier deal was found by Cheapflights users on 2/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/271:57 pm
SAT
- STL
1 stop10h 30m
Frontier
Deal found 2/10![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/98:53 pm
SAT
- STL
1 stop26h 26m
Frontier
Deal found 2/11![Frontier logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Wed 3/116:00 am
SAT
- STL
1 stop25h 17m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$91
This CheapOair deal was found by Cheapflights users on 2/10. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/18:24 pm
SAT
- STL
1 stop27h 35m
Frontier
Deal found 2/10![Frontier logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/133:14 pm
SAT
- STL
1 stop27h 58m
Frontier
Deal found 2/11![Frontier logo]()
$97
This American Airlines deal was found by Cheapflights users on 2/12. 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.
Fri 3/135:36 pm
SAT
- STL
1 stop5h 22m
American Airlines
Deal found 2/12![American Airlines logo]()
$98
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Fri 4/106:02 pm
SAT
- STL
1 stop4h 25m
United Airlines
Deal found 2/11![United Airlines logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 4/77:45 am
SAT
- STL
1 stop26h 03m
Frontier
Deal found 2/10![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 2/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/1112:46 pm
SAT
- STL
1 stop8h 14m
Frontier
Deal found 2/9![Frontier logo]()
$101
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Thu 5/73:14 pm
SAT
- STL
1 stop27h 58m
Frontier
Deal found 2/9![Frontier logo]()
$102
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 February 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $160 (Expedia) |
One-way from | $83 (Trip.com) |
Popular in | November |
Cheapest in | August |
Average price | $350 |
Good round-trip deal | $323 or less |
Good one-way deal | $218 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 February 12, 2026.
Use the filters below to find and compare flights from San Antonio to St. Louis that are best for you.
Fly from
San Antonio
Fly to
St. Louis
Route
Depart
Return
Price
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 4/10
6:02 pm-10:27 pm
1 stop4h 25m
Lambert-St Louis
Mon 4/13
6:00 am-10:50 am
1 stop4h 50m
$192
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 5/2
6:02 pm-10:30 pm
1 stop4h 28m
Lambert-St Louis
Tue 5/5
7:45 am-3:39 pm
2 stops7h 54m
$202
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 4/13
4:17 pm-10:28 pm
1 stop6h 11m
Lambert-St Louis
Wed 4/15
7:45 am-3:46 pm
2 stops8h 01m
$202
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 5/18
6:10 pm-11:21 pm
1 stop5h 11m
Lambert-St Louis
Fri 5/22
7:09 pm-12:40 am
1 stop5h 31m
$207
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 4/24
6:12 pm-11:13 pm
1 stop5h 01m
Lambert-St Louis
Mon 4/27
4:41 pm-12:34 am
1 stop7h 53m
$207
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 5/14
3:14 pm-7:12 pm
1 stop27h 58m
Lambert-St Louis
Sun 5/17
9:55 pm-11:40 am
1 stop13h 45m
$213
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sun 3/15
9:34 pm-11:19 am
1 stop13h 45m
Lambert-St Louis
Sat 3/21
8:12 pm-9:06 am
1 stop12h 54m
$230
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 3/13
10:05 am-9:49 am
1 stop23h 44m
Lambert-St Louis
Fri 3/20
8:12 pm-12:17 am
1 stop28h 05m
$230
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 4/10
6:45 am-12:21 pm
2 stops29h 36m
Lambert-St Louis
Mon 4/13
8:16 pm-2:19 pm
1 stop18h 03m
$235
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 4/13
4:25 pm-8:55 pm
1 stop4h 30m
Lambert-St Louis
Wed 4/15
8:55 pm-11:15 pm
Nonstop2h 20m
$237
Showing 1-10 of 24 results
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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
How far ahead should I book a flight from San Antonio to St. Louis?
Use this chart to determine the optimal time to book a round-trip flight from San Antonio to St. Louis. Price data was last updated on February 6, 2026.
To ensure you get the cheapest price possible for a flight from San Antonio to St. Louis, you should look to book at least 85 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from San Antonio to St. Louis?
Currently, May is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $119). Flying from San Antonio to St. Louis in February is currently the most expensive (average of $234). 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 February 12, 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 February 12, 2026.
See what other customers who have flown with Southwest, Delta, and United 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.
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
Comfort
8.0
Entertainment
7.5
Food
7.0
Overall
8.0
Crew
8.6
Boarding
8.1
Reviews
1 / 20
8.0
ExcellentIla,Mar 2025
HOU - DAL
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
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus
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San Antonio and St. Louis flights
Browse other San Antonio and St. Louis flight options. Last updated on February 12, 2026.
Other flights from San Antonio
Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on February 12, 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 February 12, 2026.
Top 5 airlines flying from San Antonio to St. Louis
Discover the top 5 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 February 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$109 | Average$212 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$186 | Average$308 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$196 | Average$278 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$228 | Average$395 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$232 | Average$248 | FlexibilityNo cancel fee | On-timeN/A |