$113+ Cheap flights from San Antonio to St. Louis (SAT - STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
SAT — STL
Dec 9 — Dec 161
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
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.Cheap flight deals from San Antonio to St. Louis
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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 November 9, 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 November 9, 2026.
This CheapOair deal was found by Cheapflights users on 11/6. 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 12/86:47 pm -
1 stop16h 17m
Tue 12/156:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$220
This Travelocity deal was found by Cheapflights users on 11/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:32 pm -
1 stop6h 39m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/8![Frontier logo]()
$250
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/38:41 pm -
1 stop14h 16m
Mon 12/77:54 pm -
1 stop22h 07m
Deal found 11/6![Frontier logo]()
$260
This Trip.com deal was found by Cheapflights users on 11/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:44 pm -
1 stop16h 22m
Sat 12/57:54 pm -
1 stop24h 08m
Deal found 11/8![Frontier logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/108:47 pm -
1 stop14h 10m
Mon 12/147:54 pm -
1 stop22h 07m
Deal found 11/6![Frontier logo]()
$273
This Trip.com deal was found by Cheapflights users on 11/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:44 pm -
1 stop16h 22m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/8![Frontier logo]()
$279
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/38:41 pm -
1 stop14h 16m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$283
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/108:47 pm -
1 stop14h 10m
Sun 12/136:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$285
This CheapOair deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/68:47 pm -
1 stop14h 10m
Sun 12/136:20 pm -
1 stop17h 20m
Deal found 11/8![Frontier logo]()
$290
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Wed 12/1612:32 pm -
1 stop11h 40m
Sat 12/197:03 pm -
1 stop24h 32m
Deal found 11/6![Frontier logo]()
$300
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 November 9, 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 November 9, 2026.
This Southwest deal was found by Cheapflights users on 11/6. 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.
Wed 12/167:25 am -
Nonstop2h 10m
Sat 12/199:50 pm -
Nonstop2h 20m
Deal found 11/6![Southwest logo]()
$327
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/25:15 am -
2 stops7h 07m
Sat 12/53:00 pm -
1 stop4h 20m
Deal found 11/4![United Airlines logo]()
$420
This Southwest deal was found by Cheapflights users on 11/7. 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.
Sat 12/57:45 am -
Nonstop2h 05m
Sat 12/128:40 am -
Nonstop2h 15m
Deal found 11/7![Southwest logo]()
$342
This Southwest deal was found by Cheapflights users on 11/6. 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.
Thu 12/37:25 am -
Nonstop2h 10m
Mon 12/78:25 pm -
Nonstop2h 20m
Deal found 11/6![Southwest logo]()
$357
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/267:01 am -
2 stops8h 42m
Mon 11/305:55 pm -
1 stop4h 56m
Deal found 11/4![United Airlines logo]()
$433
This Southwest deal was found by Cheapflights users on 11/5. 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.
Mon 12/215:05 pm -
Nonstop2h 05m
Fri 12/258:25 pm -
Nonstop2h 20m
Deal found 11/5![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 11/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/171:50 pm -
1 stop7h 18m
Sun 12/206:15 am -
1 stop4h 36m
Deal found 11/6![United Airlines logo]()
$454
This Southwest deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/13:20 pm -
Nonstop2h 00m
Sun 12/66:10 am -
1 stop5h 35m
Deal found 11/8![Southwest logo]()
$434
This Southwest deal was found by Cheapflights users on 11/5. 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.
Tue 11/245:05 pm -
Nonstop2h 05m
Wed 11/2510:15 pm -
Nonstop2h 25m
Deal found 11/5![Southwest logo]()
$447
This Southwest deal was found by Cheapflights users on 11/6. 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.
Thu 12/37:25 am -
Nonstop2h 10m
Sun 12/69:50 pm -
Nonstop2h 20m
Deal found 11/6![Southwest logo]()
$449
This Southwest deal was found by Cheapflights users on 11/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/136:40 am -
Nonstop2h 05m
Tue 4/207:50 pm -
Nonstop2h 25m
Deal found 11/8![Southwest logo]()
$457
Last-minute flights from San Antonio to St. LouisDiscover last-minute flight deals from San Antonio to St. Louis. Data last updated November 9, 2026 and is based on user searches.
Discover last-minute flight deals from San Antonio to St. Louis. Data last updated November 9, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 11/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:44 pm -
1 stop16h 22m
Sat 12/57:54 pm -
1 stop24h 08m
Deal found 11/8![Frontier logo]()
$265
This Trip.com deal was found by Cheapflights users on 11/8. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:44 pm -
1 stop16h 22m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/8![Frontier logo]()
$279
This Travelocity deal was found by Cheapflights users on 11/8. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/21:32 pm -
1 stop6h 39m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/8![Frontier logo]()
$250
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/38:41 pm -
1 stop14h 16m
Mon 12/77:54 pm -
1 stop22h 07m
Deal found 11/6![Frontier logo]()
$260
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/38:41 pm -
1 stop14h 16m
Sun 12/66:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$283
This CheapOair deal was found by Cheapflights users on 11/6. 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.
Sun 12/68:47 pm -
1 stop14h 10m
Sun 12/136:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$290
This CheapOair deal was found by Cheapflights users on 11/6. 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 12/86:47 pm -
1 stop16h 17m
Tue 12/156:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$220
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/108:47 pm -
1 stop14h 10m
Mon 12/147:54 pm -
1 stop22h 07m
Deal found 11/6![Frontier logo]()
$273
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Thu 12/108:47 pm -
1 stop14h 10m
Sun 12/136:20 pm -
1 stop17h 20m
Deal found 11/6![Frontier logo]()
$285
This Trip.com deal was found by Cheapflights users on 11/6. 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.
Wed 12/1612:32 pm -
1 stop11h 40m
Sat 12/197:03 pm -
1 stop24h 32m
Deal found 11/6![Frontier logo]()
$300
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 November 9, 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 November 9, 2026.
This CheapOair deal was found by Cheapflights users on 11/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:44 pm -
1 stop16h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 11/5. 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.
Mon 12/1412:32 pm -
1 stop11h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/5![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 11/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/3012:06 pm -
1 stop11h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$146
This CheapOair deal was found by Cheapflights users on 11/4. 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.
Sat 11/142:44 pm -
1 stop21h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Frontier logo]()
$149
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 12/295:15 am -
1 stop4h 34m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![United Airlines logo]()
$158
This CheapOair deal was found by Cheapflights users on 11/6. 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.
Sat 12/267:15 pm -
1 stop21h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Frontier logo]()
$162
This Southwest deal was found by Cheapflights users on 11/9. 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 12/13:20 pm -
Nonstop2h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/9![Southwest logo]()
$164
This Southwest deal was found by Cheapflights users on 11/6. 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 12/295:35 am -
1 stop6h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/6![Southwest logo]()
$174
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 November 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $220 (CheapOair) |
One-way from | $113 (CheapOair) |
Popular in | June |
Cheapest in | February |
Average price | $513 |
Good round-trip deal | $377 or less |
Good one-way deal | $164 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 7,457,451 searches. Data last updated November 9, 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 San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Tue 12/1
6:44 pm-11:06 am
1 stop16h 22m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$131
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Wed 11/25
12:06 pm-11:59 pm
1 stop11h 53m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$131
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Tue 12/29
5:15 am-9:49 am
1 stop4h 34m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$158
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Tue 12/29
7:15 am-9:25 am
Nonstop2h 10m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$175
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Thu 11/19
8:20 pm-11:03 am
1 stop14h 43m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$193
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Fri 11/27
11:45 am-4:50 pm
1 stop5h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$199
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Sun 12/13
6:16 am-1:28 pm
1 stop7h 12m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$221
Quickest round-trip
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Fri 11/27
4:55 pm-7:00 pm
Nonstop2h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$224
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Mon 11/23
4:55 pm-7:00 pm
Nonstop2h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$224
San AntonioSt. Louis
SAT San Antonio - STL Lambert-St Louis
SATSTL
San Antonio
Tue 11/24
5:05 pm-7:10 pm
Nonstop2h 05m
Lambert-St Louis
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$224
Showing 1-10 of 21 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 November.
| 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 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, February is the cheapest month in which you can book a flight from San Antonio to St. Louis (average of $313). Flying from San Antonio to St. Louis in June is currently the most expensive (average of $549). 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 November 9, 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 November 9, 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.
Food
7.0
Boarding
8.1
Entertainment
7.4
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Food
7.0
Boarding
8.1
Entertainment
7.4
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Food
7.0
Boarding
8.1
Entertainment
7.4
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Food
7.0
Boarding
8.1
Entertainment
7.4
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
Food
7.0
Boarding
8.1
Entertainment
7.4
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
8.0
ExcellentPatricia,Oct 2026
DAL - TPA
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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Chesterfield
Edwardsville
Glencoe
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Top 4 airlines flying from San Antonio to St. Louis
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$192 | Average$348 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$196 | Average$350 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$470 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$297 | Average$480 | FlexibilityNo cancel fee | On-time63% |