Southwest Airlines flights from STL to SAN
Find comprehensive Southwest Airlines flight information, schedules, and booking details for direct flights from STL to SAN. Southwest Airlines operates 1-4 flights daily flights on this route.• Flight Duration: 3h 40m - 4h 15m (average flight time)• Distance: 1562 miles (2513 km) (air miles between airports)• Daily Flights: 1-4 flights (scheduled departures per day)
STL
SAN
FLIGHT TIME
3h 40m - 4h 15m
FLIGHT DISTANCE
1562 miles (2513 km)
4h 0m - 4h 0m
09:55
18:30
1562 miles (2513 km)
February
1 (Show)
12
Southwest Airlines Flight Schedule from STL to SAN
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
WN4442 |  Southwest Airlines | 09:55 | 11:55:00 | Boeing 737MAX 8 Passenger |
WN4238 | Southwest Airlines | 18:30 | 20:30:00 | Boeing 737MAX 8 Passenger |
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 3h 40m - 4h 15m.
Pricing patterns: February typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 9:00, 18:00, offering more flight options and potentially better connections.
STL - SAN flight price statistics
$514
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.
$420
Jan$341
Feb$558
Mar$574
Apr$563
May$435
Jun$465
Jul$421
Aug$850
Sep$460
Oct$524
Nov$554
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 SAN?
Southwest Airlines operates 2 flights from STL to SAN.
What city does SAN airport serve?
SAN airport serves San Bernardino.
How long is the Southwest Airlines flight from STL to SAN?
The flight duration is approximately 3h 40m - 4h 15m.
What is the distance from STL to SAN?
The distance is 1562 miles (2513 km).
What aircraft does Southwest Airlines use on this route?
Southwest Airlines uses Boeing 737MAX 8 Passenger on this route.
What are the earliest and latest Southwest Airlines flight departure times?
The earliest Southwest Airlines flight departs at 09:55 and the latest departs at 18:30.
What is the cheapest month to fly Southwest Airlines from STL to SAN?
February 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 SAN?
The average price for a round-trip Southwest Airlines flight on this route is approximately $514. Prices can vary based on booking time and demand.
How many Southwest Airlines flights operate per week on this route?
Southwest Airlines operates approximately 12 flights per week from STL to SAN.