Southwest Airlines flights from STL to SAT
Find comprehensive Southwest Airlines flight information, schedules, and booking details for direct flights from STL to SAT. Southwest Airlines operates 1-2 flights daily flights on this route.• Flight Duration: 2h 05m - 2h 25m (average flight time)• Distance: 790 miles (1271 km) (air miles between airports)• Daily Flights: 1-2 flights (scheduled departures per day)
STL
SAT
FLIGHT TIME
2h 05m - 2h 25m
FLIGHT DISTANCE
790 miles (1271 km)
2h 20m - 2h 20m
09:50
21:55
790 miles (1271 km)
June
1 (Show)
8
Southwest Airlines Flight Schedule from STL to SAT
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
WN1139 |  Southwest Airlines | 09:50 | 12:10:00 | Boeing 737-800 (winglets) Passenger/BBJ2 |
WN4564 | Southwest Airlines | 21:55 | 00:15:00 | Boeing 737-700 (winglets) Passenger/BBJ1 |
Southwest Airlines Monthly Flight Calendar
December 2025
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 2h 05m - 2h 25m.
Pricing patterns: June typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 9:00, 21:00, offering more flight options and potentially better connections.
STL - SAT flight price statistics
$417
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$237
Jan$298
Feb$420
Mar$465
Apr$650
May$197
Jun$460
Jul$457
Aug$439
Sep$418
Oct$540
Nov$428
DecSouthwest Airlines Terminal Information
Terminal information for Southwest Airlines on this route is currently being updated. Please check back soon or contact the airports directly for terminal details.
Frequently Asked Questions about Southwest Airlines Flights
How many Southwest Airlines flights operate from STL to SAT?
Southwest Airlines operates 2 flights from STL to SAT.
What city does SAT airport serve?
SAT airport serves San Antonio.
How long is the Southwest Airlines flight from STL to SAT?
The flight duration is approximately 2h 05m - 2h 25m.
What is the distance from STL to SAT?
The distance is 790 miles (1271 km).
What aircraft does Southwest Airlines use on this route?
Southwest Airlines uses Boeing 737-800 (winglets) Passenger/BBJ2, Boeing 737-700 (winglets) Passenger/BBJ1 on this route.
What are the earliest and latest Southwest Airlines flight departure times?
The earliest Southwest Airlines flight departs at 09:50 and the latest departs at 21:55.
What is the cheapest month to fly Southwest Airlines from STL to SAT?
June is typically the cheapest month to fly Southwest Airlines on this route.
What is the average price for a Southwest Airlines flight from STL to SAT?
The average price for a round-trip Southwest Airlines flight on this route is approximately $417. Prices can vary based on booking time and demand.
How many Southwest Airlines flights operate per week on this route?
Southwest Airlines operates approximately 8 flights per week from STL to SAT.