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WN4123 Flight Status Southwest Airlines: St. Louis to Phoenix (SWA4123)

WN 4123 St. Louis to Phoenix Flight Status

Southwest Airlines Flight WN4123 from St. Louis Lambert International Airport STL to Phoenix Sky Harbor International Airport PHX is not scheduled for today July 18th, 2026.
The last time the flight was scheduled was on April 4th, 2026.
Check the table below for WN4123's most recent flight history:

WN 4123 Flight Status & Schedule

Date Departure Arrival Status
Apr 04 14:21 15:26
Landed
 Track >
Mar 28 14:27 15:30
Landed
 Track >
Mar 21 14:09 14:55
Landed
 Track >
Mar 14 14:48 15:47
Landed Late
 Track >
< All STL Departures All PHX Arrivals >

Southwest Airlines WN 4123 St. Louis to Phoenix Flight Information

Southwest Airlines Flight WN4123 connects St. Louis, United States to Phoenix, United States, taking off from St. Louis Lambert International Airport STL and landing at Phoenix Sky Harbor International Airport PHX.

How long is the WN4123 flight from St. Louis to Phoenix?

The average flight time from St. Louis to Phoenix is 2 hours and 58 minutes. The flight distance is 2027 km / 1259 miles and the average flight speed is 683 km/h / 425 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4123 St. Louis to Phoenix?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4123 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4123 arriving at?

Flight WN4123 arrives at Phoenix Sky Harbor International Airport (PHX) Terminal 4.

When was the latest WN4123 flight?

The latest flight took off on Saturday, April 4th, 2026 with the flight status being Landed on 15:26.

How else can the flight WN4123 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4123, WN 4123, SWA 4123.

How often is flight WN4123 delayed?

On average, 25% of all WN4123 flights are delayed. The average delay is 17 minutes.

Can I get compensation for my delayed or cancelled WN4123 flight or baggage issues?

If your WN4123 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.

See our WN4123 Flight Tracker above for more details.

WN4123 and St. Louis STL to Phoenix PHX Flights

Other flights departing from St. Louis STL: WN4259, WN3752, WN2483, AA6369

Other flights arriving at Phoenix PHX: AA3009, WN1571, AA2978, WN3765

All flights connecting St. Louis STL to Phoenix PHX.

WN4123 Southwest Airlines Flight: St. Louis to Phoenix Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: N41281 AA9862 IX933 7R4333 VO6126 AD2002 AA9861 UA3327 G49214 9X6210
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.