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Uncover the best deals on St Louis to San Antonio flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest STL - SAT Flights
Useful information for finding best airline tickets from Lambert St Louis International to San Antonio International on your next trip.
Cheapest Round Trip Flight
$208
Southwest Airlines
• 1 stop
• 8h 45m
Aug 13 – Aug 16
The cheapest round trip flight from St Louis to San Antonio (STL-SAT-STL) is currently $208
Cheapest Direct Flight
$208
Southwest Airlines
• nonstop
• 3h 30m
Aug 12
The cheapest nonstop flight from St Louis to San Antonio (STL-SAT) is currently $208
Fastest Flight
3h 25m
The fastest nonstop flight from St Louis to San Antonio (STL-SAT) takes 3h 25m
Top Airlines Flying from St Louis to San Antonio
Latest Flight Deals from St Louis (STL) to San Antonio (SAT)
Compare and book low fare round-trip air tickets from St Louis to San Antonio. Ideal for travelers with confirmed return itineraries.
Aug 13 - Aug 16, Economy
St Louis → San Antonio
8h 45m
6:00 AM - 2:10 PM • 1 stop
St Louis → San Antonio
5h
6:30 AM - 10:15 AM • 1 stop
Southwest Airlines
Aug 15 - Aug 17, Economy
St Louis → San Antonio
7h 10m
4:20 PM - 8:50 PM • 1 stop
St Louis → San Antonio
3h 25m
7:20 AM - 9:25 AM • nonstop
Southwest Airlines
Aug 13 - Aug 13, Economy
St Louis → San Antonio
10h 40m
7:40 AM - 2:20 PM • 1 stop
St Louis → San Antonio
20h 35m
8:55 PM - 9:30 AM • 2 stops
Southwest Airlines
Aug 15 - Aug 17, Economy
St Louis → San Antonio
27h 5m
6:09 PM - 10:34 AM • 1 stop
St Louis → San Antonio
8h 41m
6:25 AM - 11:46 AM • 1 stop
Delta Airlines
Aug 14 - Aug 16, Economy
St Louis → San Antonio
- • 1 stop
St Louis → San Antonio
- • 1 stop
United Airlines
Flying to San Antonio soon? We've surfaced some of the most affordable last-minute flights from St Louis to San Antonio, ideal for urgent plans or spontaneous trips.
Aug 13 - Aug 16, Economy
St Louis → San Antonio
8h 45m
6:00 AM - 2:10 PM • 1 stop
St Louis → San Antonio
5h
6:30 AM - 10:15 AM • 1 stop
Southwest Airlines
Aug 15 - Aug 17, Economy
St Louis → San Antonio
7h 10m
4:20 PM - 8:50 PM • 1 stop
St Louis → San Antonio
3h 25m
7:20 AM - 9:25 AM • nonstop
Southwest Airlines
Aug 13 - Aug 13, Economy
St Louis → San Antonio
10h 40m
7:40 AM - 2:20 PM • 1 stop
St Louis → San Antonio
20h 35m
8:55 PM - 9:30 AM • 2 stops
Southwest Airlines
Aug 15 - Aug 17, Economy
St Louis → San Antonio
27h 5m
6:09 PM - 10:34 AM • 1 stop
St Louis → San Antonio
8h 41m
6:25 AM - 11:46 AM • 1 stop
Delta Airlines
Aug 14 - Aug 16, Economy
St Louis → San Antonio
- • 1 stop
St Louis → San Antonio
- • 1 stop
United Airlines
Looking for the fastest way to San Antonio? These direct flight options from STL to SAT offer both convenience and value—no layovers, just straight to your destination.
Aug 12 - Aug 15, Economy
St Louis → San Antonio
3h 30m
8:40 AM - 10:50 AM • nonstop
St Louis → San Antonio
3h 25m
7:20 AM - 9:25 AM • nonstop
Southwest Airlines
Aug 13 - Aug 16, Economy
St Louis → San Antonio
3h 25m
8:30 AM - 10:35 AM • nonstop
St Louis → San Antonio
3h 25m
6:50 AM - 8:55 AM • nonstop
Southwest Airlines
Aug 13 - Aug 16, Economy
St Louis → San Antonio
3h 30m
8:45 PM - 10:55 PM • nonstop
St Louis → San Antonio
3h 25m
6:50 AM - 8:55 AM • nonstop
Southwest Airlines
Aug 14 - Aug 16, Economy
St Louis → San Antonio
3h 30m
8:45 PM - 10:55 PM • nonstop
St Louis → San Antonio
3h 25m
6:50 AM - 8:55 AM • nonstop
Southwest Airlines
Aug 14 - Aug 16, Economy
St Louis → San Antonio
3h 25m
8:30 AM - 10:35 AM • nonstop
St Louis → San Antonio
3h 25m
6:50 AM - 8:55 AM • nonstop
Southwest Airlines
FAQs on St Louis to San Antonio Flights
What are the airports in St Louis?
STL
What’s the most popular airline flying from STL to SAT?
The most popular airline flying from St Louis to San Antonio are
Can I fly from STL to SAT non-stop?
Yes, you can fly STL to SAT non-stop on
Which airlines fly nonstop between St Louis and San Antonio?
The non-stop flights between St Louis and San Antonio are .
What’s the earliest departure time from STL to SAT Airport?
The earliest flight leaves STL at 6:00 am and lands in SAT - San Antonio International
What are the airports in San Antonio?
SAT
Can I make changes to my St Louis to San Antonio flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from STL to SAT?
Read the fare rules of the St Louis to San Antonio air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from St Louis and San Antonio?
operate flights between St Louis and San Antonio
How long does a flight from St Louis to San Antonio take?
It takes approximately 2 hour to fly non-stop from STL to SAT, which is 785.93 miles by air.
Which airlines provide the cheapest flights from St Louis (STL) to San Antonio (SAT) ?
In the past couple of days, the cheapest tickets to SAT from STL were found on DL : USD 502
Do I need a passport to fly between STL and SAT?
No
What’s the latest departure time from STL to SAT ?
The last flight leaves STL at 1:500 pm
St Louis (STL) to San Antonio (SAT): Airport Information
| Origin Airport | Lambert St Louis International , St Louis, US |
| Destination Airport | San Antonio International , San Antonio, US |
| Distance | 786 miles |
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