$111+ Cheap flights from San Antonio to St. Louis (SAT - STL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Jul 7 — Jul 141
Round-trip
1 adult, Economy
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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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Cheapest flights from San Antonio to St. LouisExplore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
Explore the most affordable flight options available from San Antonio to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 7, 2026.
This Frontier 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 Frontier 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
Mon 7/68:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/5![Frontier logo]()
$265
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/184:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Tue 7/218:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/6![Frontier logo]()
$267
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Tue 7/217:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/6![Frontier logo]()
$268
This Booking.com deal was found by Cheapflights users on 6/3. 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.
Wed 7/17:51 pm
SAT
- STL
1 stop23h 02m
Frontier
Wed 7/87:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/3![Frontier logo]()
$270
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 7/219:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Thu 7/234:09 pm
STL
- SAT
1 stop16h 47m
Frontier
Deal found 6/6![Frontier logo]()
$273
This Mytrip deal was found by Cheapflights users on 6/3. 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 7/167:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Mon 7/208:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/3![Frontier logo]()
$277
This Booking.com deal was found by Cheapflights users on 6/2. 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.
Thu 7/97:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Mon 7/138:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/2![Frontier logo]()
$280
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 10/153:10 pm
SAT
- STL
1 stop28h 05m
Frontier
Mon 10/198:10 pm
STL
- SAT
1 stop15h 11m
Frontier
Deal found 6/4![Frontier logo]()
$303
This CheapOair deal was found by Cheapflights users on 6/3. 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 7/157:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Wed 7/227:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/3![Frontier logo]()
$318
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/114:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Sat 7/188:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/6![Frontier logo]()
$320
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.
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Fri 7/177:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Deal found 6/4![Frontier logo]()
$323
Best flights from San Antonio to St. LouisDiscover carefully curated flight deals from San Antonio to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
Discover carefully curated flight deals from San Antonio to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 7, 2026.
This Southwest deal was found by Cheapflights users on 6/3. 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 7/156:25 pm
SAT
- STL
1 stop3h 40m
Southwest
Wed 7/228:25 am
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/3![Southwest logo]()
$393
This Kiwi.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/209:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Sat 7/254:57 pm
STL
- SAT
2 stops25h 47m
Frontier
Deal found 6/6![Frontier logo]()
$398
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:30 am
SAT
- STL
2 stops10h 08m
United Airlines
Tue 8/257:00 am
STL
- SAT
1 stop8h 10m
United Airlines
Deal found 6/4![United Airlines logo]()
$430
This Southwest deal was found by Cheapflights users on 6/3. 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 7/13:35 pm
SAT
- STL
Nonstop2h 10m
Southwest
Wed 7/812:40 pm
STL
- SAT
1 stop6h 40m
Southwest
Deal found 6/3![Southwest logo]()
$397
This Southwest deal was found by Cheapflights users on 6/2. 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 8/311:00 pm
SAT
- STL
1 stop5h 05m
Southwest
Sat 9/52:25 pm
STL
- SAT
Nonstop2h 05m
Southwest
Deal found 6/2![Southwest logo]()
$427
This United Airlines deal was found by Cheapflights users on 6/3. 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 7/74:18 pm
SAT
- STL
1 stop6h 23m
United Airlines
Wed 7/86:14 am
STL
- SAT
1 stop7h 03m
United Airlines
Deal found 6/3![United Airlines logo]()
$477
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/263:30 pm
SAT
- STL
Nonstop2h 10m
Southwest
Sun 8/307:45 am
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/5![Southwest logo]()
$439
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 6/233:35 pm
SAT
- STL
Nonstop2h 10m
Southwest
Tue 8/48:45 pm
STL
- SAT
Nonstop2h 10m
Southwest
Deal found 6/6![Southwest logo]()
$473
This Southwest deal was found by Cheapflights users on 6/3. 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 7/164:50 pm
SAT
- STL
Nonstop2h 10m
Southwest
Mon 7/205:05 am
STL
- SAT
1 stop3h 20m
Southwest
Deal found 6/3![Southwest logo]()
$477
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated June 7, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated June 7, 2026 and is based on user searches.
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/288:56 pm
SAT
- STL
1 stop17h 10m
Frontier
Wed 7/18:08 pm
STL
- SAT
1 stop22h 48m
Frontier
Deal found 6/5![Frontier logo]()
$326
This Booking.com deal was found by Cheapflights users on 6/3. 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.
Wed 7/17:51 pm
SAT
- STL
1 stop23h 02m
Frontier
Wed 7/87:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/3![Frontier logo]()
$270
This Frontier 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 Frontier 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
Mon 7/68:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/5![Frontier logo]()
$265
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/114:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Sat 7/188:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/6![Frontier logo]()
$320
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Tue 7/217:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/6![Frontier logo]()
$268
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.
Tue 7/147:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Fri 7/177:10 pm
STL
- SAT
1 stop25h 27m
Frontier
Deal found 6/4![Frontier logo]()
$323
This CheapOair deal was found by Cheapflights users on 6/3. 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 7/157:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Wed 7/227:03 pm
STL
- SAT
1 stop25h 34m
Frontier
Deal found 6/3![Frontier logo]()
$318
This Mytrip deal was found by Cheapflights users on 6/3. 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 7/167:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Mon 7/208:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/3![Frontier logo]()
$277
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/184:26 pm
SAT
- STL
1 stop7h 33m
Frontier
Tue 7/218:08 pm
STL
- SAT
1 stop22h 36m
Frontier
Deal found 6/6![Frontier logo]()
$267
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 7/219:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Thu 7/234:09 pm
STL
- SAT
1 stop16h 47m
Frontier
Deal found 6/6![Frontier logo]()
$273
One-way flights from San Antonio to St. LouisSearch for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
Search for one-way flight options from San Antonio to St. Louis. Find affordable one-way fares based on user searches. Data last updated June 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/317:51 pm
SAT
- STL
1 stop23h 32m
Frontier
Deal found 6/3![Frontier logo]()
$111
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.
Sat 9/59:51 am
SAT
- STL
1 stop14h 23m
Frontier
Deal found 6/4![Frontier logo]()
$125
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 8/183:30 pm
SAT
- STL
Nonstop2h 10m
Southwest
Deal found 6/7![Southwest logo]()
$126
This Frontier 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 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 6/7![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 6/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/297:51 pm
SAT
- STL
2 stops21h 39m
Frontier
Deal found 6/3![Frontier logo]()
$137
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/308:56 pm
SAT
- STL
1 stop21h 55m
Frontier
Deal found 6/6![Frontier logo]()
$139
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 7/287:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/4![Frontier logo]()
$141
This Trip.com deal was found by Cheapflights users on 6/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/39:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Deal found 6/6![Frontier logo]()
$143
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.
Mon 7/207:39 pm
SAT
- STL
1 stop23h 44m
Frontier
Deal found 6/4![Frontier logo]()
$144
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.
Mon 7/69:32 pm
SAT
- STL
1 stop20h 33m
Frontier
Deal found 6/6![Frontier logo]()
$145
Find flight deals from San Antonio to St. Louis
Discover tips and strategies to find the most affordable flight options for your journey from San Antonio (SAT) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $265 (Frontier) |
One-way from | $111 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $457 |
Good round-trip deal | $406 or less |
Good one-way deal | $210 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Antonio to St. Louis that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 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
Wed 7/15
6:25 pm-10:05 pm
1 stop3h 40m
Lambert-St Louis
Wed 7/22
8:25 am-10:35 am
Nonstop2h 10m
$393
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Wed 7/1
3:35 pm-5:45 pm
Nonstop2h 10m
Lambert-St Louis
Wed 7/8
12:40 pm-7:20 pm
1 stop6h 40m
$397
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 7/20
9:32 pm-6:05 pm
1 stop20h 33m
Lambert-St Louis
Sat 7/25
4:57 pm-6:44 pm
2 stops25h 47m
$398
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Mon 8/31
1:00 pm-6:05 pm
1 stop5h 05m
Lambert-St Louis
Sat 9/5
2:25 pm-4:30 pm
Nonstop2h 05m
$427
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 8/20
5:30 am-3:38 pm
2 stops10h 08m
Lambert-St Louis
Tue 8/25
7:00 am-3:10 pm
1 stop8h 10m
$430
Quickest round-trip
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Wed 8/26
3:30 pm-5:40 pm
Nonstop2h 10m
Lambert-St Louis
Sun 8/30
7:45 am-9:55 am
Nonstop2h 10m
$439
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 6/23
3:35 pm-5:45 pm
Nonstop2h 10m
Lambert-St Louis
Tue 8/4
8:45 pm-10:55 pm
Nonstop2h 10m
$473
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 7/7
4:18 pm-10:41 pm
1 stop6h 23m
Lambert-St Louis
Wed 7/8
6:14 am-1:17 pm
1 stop7h 03m
$477
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 7/16
4:50 pm-7:00 pm
Nonstop2h 10m
Lambert-St Louis
Mon 7/20
5:05 am-8:25 am
1 stop3h 20m
$477
Cheapest one-way
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 6/27
4:22 pm-11:49 pm
1 stop7h 27m
$179
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 June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star |
- 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 $236). 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 June 7, 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Antonio to St. Louis as you normally would.
The best insider tips for San Antonio to St. Louis flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Antonio to St. Louis trip
Our travel experts
Reviews of airlines servicing St. Louis
Get insights into the airlines that provide service to St. Louis. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to St. Louis. Reviews last updated June 7, 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.
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Boarding
8.1
Comfort
8.0
Crew
8.6
Overall
8.0
Food
7.0
Entertainment
7.5
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 locationsO'Fallon
Edwardsville
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
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San Antonio and St. Louis flights
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Top 4 airlines flying from San Antonio to St. Louis
Discover the top 4 airlines that operate flights from San Antonio to St. Louis. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 7, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$336 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$207 | Average$350 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$308 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$248 | Average$450 | FlexibilityNo cancel fee | On-time63% |