$105+ 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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Jun 11 — Jun 181
Round-trip
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
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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.Cheap flight deals from San Antonio to St. Louis
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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 May 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 May 12, 2026.
This Mytrip deal was found by Cheapflights users on 5/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Tue 6/167:46 pm
STL
- SAT
1 stop24h 25m
Frontier
Deal found 5/10![Frontier logo]()
$199
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Tue 6/238:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/11![Frontier logo]()
$201
This Trip.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:51 pm
SAT
- STL
1 stop23h 02m
Frontier
Sun 6/144:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Deal found 5/11![Frontier logo]()
$218
This Mytrip deal was found by Cheapflights users on 5/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:51 pm
SAT
- STL
1 stop23h 32m
Frontier
Mon 9/78:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/7![Frontier logo]()
$219
This Frontier deal was found by Cheapflights users on 5/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:09 pm
SAT
- STL
1 stop23h 02m
Frontier
Mon 6/18:08 pm
STL
- SAT
1 stop22h 51m
Frontier
Deal found 5/7![Frontier logo]()
$220
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Wed 6/178:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/10![Frontier logo]()
$222
This Frontier deal was found by Cheapflights users on 5/8. 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 5/297:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/18:08 pm
STL
- SAT
1 stop22h 51m
Frontier
Deal found 5/8![Frontier logo]()
$225
This Trip.com deal was found by Cheapflights users on 5/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Sat 6/137:38 pm
STL
- SAT
1 stop23h 18m
Frontier
Deal found 5/9![Frontier logo]()
$226
This Trip.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/17:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/292:56 pm
STL
- SAT
1 stop29h 15m
Frontier
Deal found 5/11![Frontier logo]()
$231
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/297:38 pm
STL
- SAT
1 stop23h 18m
Frontier
Deal found 5/11![Frontier logo]()
$232
This Mytrip deal was found by Cheapflights users on 5/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:59 pm
SAT
- STL
1 stop20h 06m
Frontier
Wed 6/108:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/7![Frontier logo]()
$233
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/152:56 pm
STL
- SAT
1 stop29h 15m
Frontier
Deal found 5/11![Frontier logo]()
$235
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 May 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 May 12, 2026.
This Delta deal was found by Cheapflights users on 5/10. 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 8/206:23 am
SAT
- STL
1 stop5h 23m
Delta
Tue 8/253:39 pm
STL
- SAT
1 stop5h 35m
Delta
Deal found 5/10![Delta logo]()
$375
This Southwest deal was found by Cheapflights users on 5/7. 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.
Mon 6/15:45 pm
SAT
- STL
1 stop6h 10m
Southwest
Thu 6/48:10 am
STL
- SAT
Nonstop2h 05m
Southwest
Deal found 5/7![Southwest logo]()
$380
This United Airlines deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/115:30 am
SAT
- STL
2 stops10h 08m
United Airlines
Wed 8/128:00 am
STL
- SAT
2 stops9h 43m
United Airlines
Deal found 5/11![United Airlines logo]()
$429
This Southwest deal was found by Cheapflights users on 5/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/91:20 pm
SAT
- STL
1 stop5h 05m
Southwest
Tue 6/238:35 am
STL
- SAT
2 stops6h 00m
Southwest
Deal found 5/9![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 5/7. 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.
Mon 6/85:30 am
SAT
- STL
1 stop3h 55m
Southwest
Wed 6/108:35 am
STL
- SAT
2 stops6h 00m
Southwest
Deal found 5/7![Southwest logo]()
$380
This Southwest deal was found by Cheapflights users on 5/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/14:25 pm
SAT
- STL
1 stop6h 35m
Southwest
Wed 7/88:25 am
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 5/12![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:10 am
SAT
- STL
Nonstop2h 05m
Southwest
Mon 8/248:30 am
STL
- SAT
Nonstop2h 05m
Southwest
Deal found 5/11![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 5/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:40 pm
SAT
- STL
1 stop5h 20m
Southwest
Mon 6/85:25 pm
STL
- SAT
2 stops6h 05m
Southwest
Deal found 5/10![Southwest logo]()
$411
This Southwest deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/2312:55 pm
SAT
- STL
2 stops6h 25m
Southwest
Tue 7/78:35 am
STL
- SAT
2 stops6h 00m
Southwest
Deal found 5/11![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 5/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/285:45 am
SAT
- STL
1 stop3h 45m
Southwest
Fri 5/298:30 am
STL
- SAT
Nonstop2h 20m
Southwest
Deal found 5/7![Southwest logo]()
$428
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated May 12, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated May 12, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/267:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/297:38 pm
STL
- SAT
1 stop23h 18m
Frontier
Deal found 5/11![Frontier logo]()
$232
This Frontier deal was found by Cheapflights users on 5/7. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/289:09 pm
SAT
- STL
1 stop23h 02m
Frontier
Mon 6/18:08 pm
STL
- SAT
1 stop22h 51m
Frontier
Deal found 5/7![Frontier logo]()
$220
This Frontier deal was found by Cheapflights users on 5/8. 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 5/297:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/18:08 pm
STL
- SAT
1 stop22h 51m
Frontier
Deal found 5/8![Frontier logo]()
$225
This Trip.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/18:59 pm
SAT
- STL
1 stop21h 07m
Frontier
Fri 6/59:06 pm
STL
- SAT
1 stop23h 08m
Frontier
Deal found 5/11![Frontier logo]()
$231
This Trip.com deal was found by Cheapflights users on 5/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Sat 6/137:38 pm
STL
- SAT
1 stop23h 18m
Frontier
Deal found 5/9![Frontier logo]()
$226
This Mytrip deal was found by Cheapflights users on 5/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:59 pm
SAT
- STL
1 stop20h 06m
Frontier
Wed 6/108:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/7![Frontier logo]()
$233
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/87:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 6/152:56 pm
STL
- SAT
1 stop29h 15m
Frontier
Deal found 5/11![Frontier logo]()
$235
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/88:59 pm
SAT
- STL
1 stop20h 06m
Frontier
Thu 6/117:38 pm
STL
- SAT
1 stop23h 18m
Frontier
Deal found 5/11![Frontier logo]()
$236
This Mytrip deal was found by Cheapflights users on 5/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Tue 6/167:46 pm
STL
- SAT
1 stop24h 25m
Frontier
Deal found 5/10![Frontier logo]()
$199
This Booking.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Tue 6/238:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/11![Frontier logo]()
$201
This Booking.com deal was found by Cheapflights users on 5/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/98:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Wed 6/178:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 5/10![Frontier logo]()
$222
This Trip.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/107:51 pm
SAT
- STL
1 stop23h 02m
Frontier
Sun 6/144:17 pm
STL
- SAT
1 stop23h 20m
Frontier
Deal found 5/11![Frontier logo]()
$218
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 May 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 May 12, 2026.
This Mytrip deal was found by Cheapflights users on 5/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:56 pm
SAT
- STL
1 stop21h 12m
Frontier
Deal found 5/7![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 5/9. 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.
Sat 8/14:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Deal found 5/9![Frontier logo]()
$109
This Trip.com deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/67:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Deal found 5/11![Frontier logo]()
$113
This Trip.com deal was found by Cheapflights users on 5/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/44:22 pm
SAT
- STL
1 stop7h 27m
Frontier
Deal found 5/9![Frontier logo]()
$114
This Frontier deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/34:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Deal found 5/11![Frontier logo]()
$115
This Trip.com deal was found by Cheapflights users on 5/10. 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 6/57:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Deal found 5/10![Frontier logo]()
$119
This CheapOair deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:51 pm
SAT
- STL
1 stop23h 32m
Frontier
Deal found 5/11![Frontier logo]()
$121
This Mytrip deal was found by Cheapflights users on 5/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/257:51 pm
SAT
- STL
1 stop23h 02m
Frontier
Deal found 5/7![Frontier logo]()
$125
This Trip.com deal was found by Cheapflights users on 5/10. 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.
Sat 5/238:59 pm
SAT
- STL
1 stop23h 12m
Frontier
Deal found 5/10![Frontier logo]()
$129
This Priceline deal was found by Cheapflights users on 5/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/612:43 pm
SAT
- STL
1 stop9h 56m
Frontier
Deal found 5/11![Frontier logo]()
$135
This Trip.com deal was found by Cheapflights users on 5/9. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/47:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Deal found 5/9![Frontier logo]()
$139
This Expedia deal was found by Cheapflights users on 5/10. 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 11/59:51 pm
SAT
- STL
1 stop24h 48m
Frontier
Deal found 5/10![Frontier logo]()
$141
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 May 12, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $199 (Mytrip) |
One-way from | $105 (Mytrip) |
Popular in | November |
Cheapest in | August |
Average price | $432 |
Good round-trip deal | $369 or less |
Good one-way deal | $208 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 May 12, 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 8/20
6:23 am-11:46 am
1 stop5h 23m
Lambert-St Louis
Tue 8/25
3:39 pm-9:14 pm
1 stop5h 35m
$375
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 6/1
5:45 pm-11:55 pm
1 stop6h 10m
Lambert-St Louis
Thu 6/4
8:10 am-10:15 am
Nonstop2h 05m
$380
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 6/9
1:20 pm-6:25 pm
1 stop5h 05m
Lambert-St Louis
Tue 6/23
8:35 am-2:35 pm
2 stops6h 00m
$380
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 6/8
5:30 am-9:25 am
1 stop3h 55m
Lambert-St Louis
Wed 6/10
8:35 am-2:35 pm
2 stops6h 00m
$380
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Wed 7/1
4:25 pm-11:00 pm
1 stop6h 35m
Lambert-St Louis
Wed 7/8
8:25 am-10:35 am
Nonstop2h 10m
$397
Quickest round-trip
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 8/18
7:10 am-9:15 am
Nonstop2h 05m
Lambert-St Louis
Mon 8/24
8:30 am-10:35 am
Nonstop2h 05m
$407
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 6/4
3:40 pm-9:00 pm
1 stop5h 20m
Lambert-St Louis
Mon 6/8
5:25 pm-11:30 pm
2 stops6h 05m
$411
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 6/23
12:55 pm-7:20 pm
2 stops6h 25m
Lambert-St Louis
Tue 7/7
8:35 am-2:35 pm
2 stops6h 00m
$417
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 5/28
5:45 am-9:30 am
1 stop3h 45m
Lambert-St Louis
Fri 5/29
8:30 am-10:50 am
Nonstop2h 20m
$428
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 8/11
5:30 am-3:38 pm
2 stops10h 08m
Lambert-St Louis
Wed 8/12
8:00 am-5:43 pm
2 stops9h 43m
$429
Showing 1-10 of 20 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | 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 $234). Flying from San Antonio to St. Louis in November is currently the most expensive (average of $543). 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 May 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 May 12, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
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
Maryland Heights
Collinsville
Eureka
Wentzville
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 May 12, 2026.
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Browse through other flights departing from San Antonio. Flights are based on user searches made on Cheapflights and were last updated on May 12, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on May 12, 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 May 12, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$336 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$207 | Average$347 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$248 | Average$434 | FlexibilityNo cancel fee | On-time63% |