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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
$429
United Airlines
• 1 stop
• 7h 11m
Nov 19 – Nov 22
The cheapest round trip flight from St Louis to San Antonio (STL-SAT-STL) is currently $429
Cheapest Direct Flight
$1059
Southwest Airlines
• nonstop
• 3h 35m
Nov 19
The cheapest nonstop flight from St Louis to San Antonio (STL-SAT) is currently $1059
Fastest Flight
3h 35m
The fastest nonstop flight from St Louis to San Antonio (STL-SAT) takes 3h 35m
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.
Nov 19 - Nov 22, Economy
St Louis → San Antonio
7h 11m
6:15 AM - 10:46 AM • 1 stop
St Louis → San Antonio
7h 3m
6:03 PM - 10:26 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
7h 26m
8:30 AM - 1:16 PM • 1 stop
St Louis → San Antonio
6h 58m
2:20 PM - 6:38 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
9h 16m
10:53 AM - 4:49 PM • 1 stop
St Louis → San Antonio
6h 58m
2:20 PM - 6:38 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
6h 50m
11:45 AM - 3:55 PM • 1 stop
St Louis → San Antonio
8h 45m
3:35 PM - 9:00 PM • 1 stop
Southwest Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
3h 35m
8:25 AM - 10:40 AM • nonstop
St Louis → San Antonio
3h 25m
4:55 PM - 7:00 PM • nonstop
Southwest 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.
Nov 19 - Nov 22, Economy
St Louis → San Antonio
7h 11m
6:15 AM - 10:46 AM • 1 stop
St Louis → San Antonio
7h 3m
6:03 PM - 10:26 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
7h 26m
8:30 AM - 1:16 PM • 1 stop
St Louis → San Antonio
6h 58m
2:20 PM - 6:38 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
9h 16m
10:53 AM - 4:49 PM • 1 stop
St Louis → San Antonio
6h 58m
2:20 PM - 6:38 PM • 1 stop
United Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
6h 50m
11:45 AM - 3:55 PM • 1 stop
St Louis → San Antonio
8h 45m
3:35 PM - 9:00 PM • 1 stop
Southwest Airlines
Nov 19 - Nov 22, Economy
St Louis → San Antonio
3h 35m
8:25 AM - 10:40 AM • nonstop
St Louis → San Antonio
3h 25m
4:55 PM - 7:00 PM • nonstop
Southwest 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.
Nov 19 - Nov 22, Economy
St Louis → San Antonio
3h 35m
8:25 AM - 10:40 AM • nonstop
St Louis → San Antonio
3h 25m
4:55 PM - 7:00 PM • 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 6:15 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 WN : USD 1058
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 8:25 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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