$95+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Apr 21 — Apr 281
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 Wednesday and return on a Saturday
Cheap flight deals from San Antonio to St. Louis
Cheapest
Best
Last-minute
One-way
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 March 22, 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 March 22, 2026.
This CheapOair deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Mon 5/119:18 pm
STL
- SAT
1 stop22h 56m
Frontier
Deal found 3/19![Frontier logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/26:45 am
SAT
- STL
1 stop27h 03m
Frontier
Mon 4/68:19 pm
STL
- SAT
1 stop28h 00m
Frontier
Deal found 3/18![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/13:00 pm
SAT
- STL
1 stop28h 32m
Frontier
Sun 5/38:06 pm
STL
- SAT
1 stop18h 09m
Frontier
Deal found 3/21![Frontier logo]()
$191
This CheapOair deal was found by Cheapflights users on 3/19. 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 4/96:45 am
SAT
- STL
1 stop27h 03m
Frontier
Sat 4/118:16 pm
STL
- SAT
1 stop28h 03m
Frontier
Deal found 3/19![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 3/18. 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 4/96:45 am
SAT
- STL
1 stop27h 03m
Frontier
Mon 4/138:19 pm
STL
- SAT
1 stop18h 50m
Frontier
Deal found 3/18![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Tue 5/126:51 pm
STL
- SAT
1 stop25h 23m
Frontier
Deal found 3/20![Frontier logo]()
$233
This CheapOair deal was found by Cheapflights users on 3/18. 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 4/154:49 pm
SAT
- STL
1 stop26h 32m
Frontier
Sat 4/188:17 pm
STL
- SAT
1 stop17h 56m
Frontier
Deal found 3/18![Frontier logo]()
$236
This Orbitz deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:45 am
SAT
- STL
1 stop27h 04m
Frontier
Sat 3/288:12 pm
STL
- SAT
1 stop12h 54m
Frontier
Deal found 3/21![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:45 am
SAT
- STL
1 stop27h 04m
Frontier
Sun 3/294:51 pm
STL
- SAT
1 stop20h 32m
Frontier
Deal found 3/20![Frontier logo]()
$241
This Expedia deal was found by Cheapflights users on 3/19. 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 4/211:38 am
SAT
- STL
1 stop9h 39m
Frontier
Sun 4/510:12 pm
STL
- SAT
1 stop12h 31m
Frontier
Deal found 3/19![Frontier logo]()
$250
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 March 22, 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 March 22, 2026.
This United Airlines deal was found by Cheapflights users on 3/20. 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 6/256:40 am
SAT
- STL
1 stop5h 31m
United Airlines
Tue 7/75:33 pm
STL
- SAT
1 stop5h 18m
United Airlines
Deal found 3/20![United Airlines logo]()
$291
This Delta deal was found by Cheapflights users on 3/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2312:08 pm
SAT
- STL
1 stop5h 52m
Delta
Sat 5/305:15 pm
STL
- SAT
1 stop7h 29m
Delta
Deal found 3/19![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 3/22. 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 5/126:30 am
SAT
- STL
1 stop5h 55m
Southwest
Sat 5/168:45 am
STL
- SAT
Nonstop2h 15m
Southwest
Deal found 3/22![Southwest logo]()
$294
This Delta deal was found by Cheapflights users on 3/18. 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 5/226:21 pm
SAT
- STL
1 stop5h 38m
Delta
Tue 5/266:21 am
STL
- SAT
1 stop5h 24m
Delta
Deal found 3/18![Delta logo]()
$291
This Southwest deal was found by Cheapflights users on 3/21. 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 5/84:45 pm
SAT
- STL
Nonstop2h 10m
Southwest
Fri 5/159:45 pm
STL
- SAT
Nonstop2h 20m
Southwest
Deal found 3/21![Southwest logo]()
$297
This United Airlines deal was found by Cheapflights users on 3/17. 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 4/36:02 pm
SAT
- STL
1 stop4h 25m
United Airlines
Sun 4/58:21 am
STL
- SAT
2 stops7h 25m
United Airlines
Deal found 3/17![United Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 3/19. 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 5/84:45 pm
SAT
- STL
Nonstop2h 10m
Southwest
Mon 5/119:45 pm
STL
- SAT
Nonstop2h 20m
Southwest
Deal found 3/19![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 3/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:00 pm
SAT
- STL
1 stop7h 19m
Delta
Fri 4/176:50 pm
STL
- SAT
1 stop5h 56m
Delta
Deal found 3/22![Delta logo]()
$317
This Southwest deal was found by Cheapflights users on 3/18. 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 4/94:45 pm
SAT
- STL
Nonstop2h 10m
Southwest
Mon 4/137:15 pm
STL
- SAT
1 stop3h 45m
Southwest
Deal found 3/18![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:05 pm
SAT
- STL
1 stop6h 53m
Delta
Mon 4/66:59 pm
STL
- SAT
1 stop5h 39m
Delta
Deal found 3/17![Delta logo]()
$319
This Southwest deal was found by Cheapflights users on 3/19. 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 4/234:45 pm
SAT
- STL
Nonstop2h 10m
Southwest
Sun 4/266:15 am
STL
- SAT
1 stop5h 40m
Southwest
Deal found 3/19![Southwest logo]()
$355
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated March 22, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated March 22, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 3/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:45 am
SAT
- STL
1 stop27h 04m
Frontier
Sat 3/288:12 pm
STL
- SAT
1 stop12h 54m
Frontier
Deal found 3/21![Frontier logo]()
$240
This CheapOair deal was found by Cheapflights users on 3/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/276:45 am
SAT
- STL
1 stop27h 04m
Frontier
Sun 3/294:51 pm
STL
- SAT
1 stop20h 32m
Frontier
Deal found 3/20![Frontier logo]()
$241
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/26:45 am
SAT
- STL
1 stop27h 03m
Frontier
Mon 4/68:19 pm
STL
- SAT
1 stop28h 00m
Frontier
Deal found 3/18![Frontier logo]()
$185
This Expedia deal was found by Cheapflights users on 3/19. 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 4/211:38 am
SAT
- STL
1 stop9h 39m
Frontier
Sun 4/510:12 pm
STL
- SAT
1 stop12h 31m
Frontier
Deal found 3/19![Frontier logo]()
$250
This CheapOair deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/36:45 am
SAT
- STL
1 stop27h 03m
Frontier
Sun 4/510:12 pm
STL
- SAT
1 stop12h 31m
Frontier
Deal found 3/17![Frontier logo]()
$261
This CheapOair deal was found by Cheapflights users on 3/19. 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 4/96:45 am
SAT
- STL
1 stop27h 03m
Frontier
Sat 4/118:16 pm
STL
- SAT
1 stop28h 03m
Frontier
Deal found 3/19![Frontier logo]()
$212
This Frontier deal was found by Cheapflights users on 3/18. 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 4/96:45 am
SAT
- STL
1 stop27h 03m
Frontier
Mon 4/138:19 pm
STL
- SAT
1 stop18h 50m
Frontier
Deal found 3/18![Frontier logo]()
$224
This CheapOair deal was found by Cheapflights users on 3/18. 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 4/154:49 pm
SAT
- STL
1 stop26h 32m
Frontier
Sat 4/188:17 pm
STL
- SAT
1 stop17h 56m
Frontier
Deal found 3/18![Frontier logo]()
$236
This CheapOair deal was found by Cheapflights users on 3/19. 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 4/184:04 pm
SAT
- STL
1 stop27h 17m
Frontier
Sat 4/258:17 pm
STL
- SAT
1 stop17h 56m
Frontier
Deal found 3/19![Frontier logo]()
$281
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 March 22, 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 March 22, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/163:00 pm
SAT
- STL
1 stop28h 21m
Frontier
Deal found 3/18![Frontier logo]()
$95
This CheapOair deal was found by Cheapflights users on 3/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/173:00 pm
SAT
- STL
1 stop28h 32m
Frontier
Deal found 3/18![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/154:49 pm
SAT
- STL
1 stop26h 32m
Frontier
Deal found 3/18![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 3/22. 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 5/197:54 pm
SAT
- STL
2 stops13h 01m
Frontier
Deal found 3/22![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 5/157:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Deal found 3/18![Frontier logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 5/167:54 pm
SAT
- STL
1 stop23h 29m
Frontier
Deal found 3/18![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 4/1410:22 am
SAT
- STL
2 stops20h 28m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$134
This Frontier deal was found by Cheapflights users on 3/20. 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 4/201:51 pm
SAT
- STL
1 stop9h 28m
Frontier
Deal found 3/20![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 3/20. 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 4/224:49 pm
SAT
- STL
1 stop26h 32m
Frontier
Deal found 3/20![Frontier logo]()
$140
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 March 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $171 (CheapOair) |
One-way from | $95 (Kiwi.com) |
Popular in | November |
Cheapest in | August |
Average price | $451 |
Good round-trip deal | $350 or less |
Good one-way deal | $179 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 March 22, 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 6/25
6:40 am-12:11 pm
1 stop5h 31m
Lambert-St Louis
Tue 7/7
5:33 pm-10:51 pm
1 stop5h 18m
$291
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 5/23
12:08 pm-6:00 pm
1 stop5h 52m
Lambert-St Louis
Sat 5/30
5:15 pm-12:44 am
1 stop7h 29m
$291
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 5/22
6:21 pm-11:59 pm
1 stop5h 38m
Lambert-St Louis
Tue 5/26
6:21 am-11:45 am
1 stop5h 24m
$291
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 5/12
6:30 am-12:25 pm
1 stop5h 55m
Lambert-St Louis
Sat 5/16
8:45 am-11:00 am
Nonstop2h 15m
$294
Quickest round-trip
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 5/8
4:45 pm-6:55 pm
Nonstop2h 10m
Lambert-St Louis
Fri 5/15
9:45 pm-12:05 am
Nonstop2h 20m
$297
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 5/8
4:45 pm-6:55 pm
Nonstop2h 10m
Lambert-St Louis
Mon 5/11
9:45 pm-12:05 am
Nonstop2h 20m
$297
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Thu 4/9
4:45 pm-6:55 pm
Nonstop2h 10m
Lambert-St Louis
Mon 4/13
7:15 pm-11:00 pm
1 stop3h 45m
$303
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Tue 4/14
2:00 pm-9:19 pm
1 stop7h 19m
Lambert-St Louis
Fri 4/17
6:50 pm-12:46 am
1 stop5h 56m
$317
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Sat 4/4
5:05 pm-11:58 pm
1 stop6h 53m
Lambert-St Louis
Mon 4/6
6:59 pm-12:38 am
1 stop5h 39m
$319
San AntonioSt. Louis
SAT - STL
SATSTL
San Antonio
Fri 4/3
6:02 pm-10:27 pm
1 stop4h 25m
Lambert-St Louis
Sun 4/5
8:21 am-3:46 pm
2 stops7h 25m
$324
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 March.
| 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
Prices
Airlines
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 March 13, 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 $120). Flying from San Antonio to St. Louis in March is currently the most expensive (average of $260). 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 March 22, 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 March 22, 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
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
Reviews
1 / 20
6.0
GoodScott,Feb 2026
HOU - FLL
Comfort
8.0
Food
7.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Overall
8.0
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
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from San Antonio
Popular flights
St. Louis flight routes
Alternative routes for San Antonio to St. Louis
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Antonio to St. Louis by cabin class
Find flights from San Antonio to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Antonio and St. Louis flights
Browse other San Antonio and St. Louis flight options. Last updated on March 22, 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 March 22, 2026.
Popular flight searches
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 March 22, 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 March 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$109 | Average$288 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$192 | Average$310 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$196 | Average$295 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$258 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$266 | Average$425 | FlexibilityNo cancel fee | On-time63% |