| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Mar 01 | STL | DEN | 23:34 | 00:34 |
Landed Late
|
Track > |
| Feb 27 | STL | DEN | 22:24 | 23:19 |
Landed
|
Track > |
| Feb 26 | STL | DEN | 22:26 | 23:22 |
Landed
|
Track > |
Southwest Airlines Flight WN4123 connects St. Louis, United States to Denver, United States, taking off from St. Louis Lambert International Airport STL and landing at Denver International Airport DEN.
How long is the WN4123 flight from St. Louis to Denver?
The average flight time from St. Louis to Denver is 1 hour and 57 minutes. The flight distance is 1235 km / 768 miles and the average flight speed is 634 km/h / 394 mph.
What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4123 St. Louis to Denver?
The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4123 is 4.7/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight WN4123 arriving at?
Flight WN4123 arrives at Denver International Airport (DEN) Terminal B.
When was the latest WN4123 flight?
The latest flight took off on Monday, March 2nd, 2026 with the flight status being Landed on 00:34.
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, 33% of all WN4123 flights are delayed. The average delay is 54 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.
Other flights departing from St. Louis STL: WN972, WN2200, WN3794, WN3827
Other flights arriving at Denver DEN: WN4016, WN4056, WN3145, WN3594
All flights connecting St. Louis STL to Denver DEN.