Southwest Airlines flights from STL to PHX
Find comprehensive Southwest Airlines flight information, schedules, and booking details for direct flights from STL to PHX. Southwest Airlines operates 4-13 flights daily flights on this route.• Flight Duration: 3h 10m - 3h 47m (average flight time)• Distance: 1266 miles (2037 km) (air miles between airports)• Daily Flights: 4-13 flights (scheduled departures per day)
STL
PHX
FLIGHT TIME
3h 10m - 3h 47m
FLIGHT DISTANCE
1266 miles (2037 km)
3h 25m - 3h 35m
05:00
22:45
1266 miles (2037 km)
April
1 (Show)
55
Southwest Airlines Flight Schedule from STL to PHX
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
WN4110 |  Southwest Airlines | 05:00 | 07:35:00 | Boeing 737MAX 8 Passenger |
WN4582 | Southwest Airlines | 07:25 | 09:55:00 | Boeing 737-800 (winglets) Passenger/BBJ2 |
WN2711 | Southwest Airlines | 13:00 | 15:25:00 | Boeing 737MAX 8 Passenger |
WN1124 | Southwest Airlines | 17:20 | 19:45:00 | Boeing 737MAX 8 Passenger |
WN5085 | Southwest Airlines | 19:45 | 22:10:00 | Boeing 737MAX 8 Passenger |
WN1871 | Southwest Airlines | 22:45 | 01:10:00 | 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 10m - 3h 47m.
Pricing patterns: April typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 5:00, 7:00, 13:00, offering more flight options and potentially better connections.
STL - PHX 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.
$399
Jan$302
Feb$379
Mar$262
Apr$282
May$455
Jun$578
Jul$400
Aug$652
Sep$452
Oct$440
Nov$408
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 PHX?
Southwest Airlines operates 6 flights from STL to PHX.
What city does PHX airport serve?
PHX airport serves Phoenix.
How long is the Southwest Airlines flight from STL to PHX?
The flight duration is approximately 3h 10m - 3h 47m.
What is the distance from STL to PHX?
The distance is 1266 miles (2037 km).
What aircraft does Southwest Airlines use on this route?
Southwest Airlines uses Boeing 737MAX 8 Passenger, Boeing 737-800 (winglets) Passenger/BBJ2 on this route.
Which other airlines operate on this route?
2 other airlines operate on this route: American Airlines, Frontier Airlines.
What are the earliest and latest Southwest Airlines flight departure times?
The earliest Southwest Airlines flight departs at 05:00 and the latest departs at 22:45.
What is the cheapest month to fly Southwest Airlines from STL to PHX?
April 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 PHX?
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 55 flights per week from STL to PHX.