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WN4122 Flight Status Southwest Airlines: St. Louis to Denver (SWA4122)

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WN 4122 St. Louis to Denver Flight Status

Southwest Airlines Flight WN4122 from St. Louis Lambert International Airport STL to Denver International Airport DEN is not scheduled for today June 4th, 2026.
The last time the flight was scheduled was on February 22nd, 2026.
Check the table below for WN4122's most recent flight history:

WN 4122 Flight Status & Schedule

Date Departure Arrival Status
Feb 22 23:02 00:02
Landed Late
 Track >
Feb 20 22:14 23:13
Landed
 Track >
Feb 16 22:36 23:43
Landed
 Track >
Feb 13 22:32 23:35
Landed
 Track >
Feb 12 22:57 00:05
Landed Late
 Track >
< All STL Departures All DEN Arrivals >

Southwest Airlines WN 4122 St. Louis to Denver Flight Information

Southwest Airlines Flight WN4122 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 WN4122 flight from St. Louis to Denver?

The average flight time from St. Louis to Denver is 2 hours and 3 minutes. The flight distance is 1235 km / 768 miles and the average flight speed is 601 km/h / 374 mph.

What is the On-Time Performance (OTP) of Southwest Airlines Flight WN4122 St. Louis to Denver?

The Airportia On-Time Performance Rating for Southwest Airlines Flight WN4122 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.

Which terminal is the flight WN4122 arriving at?

Flight WN4122 arrives at Denver International Airport (DEN) Terminal B.

When was the latest WN4122 flight?

The latest flight took off on Monday, February 23rd, 2026 with the flight status being Landed on 00:02.

How else can the flight WN4122 be referenced as?

This Southwest Airlines flight can also be referenced as SWA4122, WN 4122, SWA 4122.

How often is flight WN4122 delayed?

On average, 60% of all WN4122 flights are delayed. The average delay is 16 minutes.

Can I get compensation for my delayed or cancelled WN4122 flight or baggage issues?

If your WN4122 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 WN4122 Flight Tracker above for more details.

WN4122 and St. Louis STL to Denver DEN Flights

Other flights departing from St. Louis STL: WN972, WN2200, WN3743, WN3794

Other flights arriving at Denver DEN: WN4016, WN3145, WN4056, WN3594

All flights connecting St. Louis STL to Denver DEN.

WN4122 Southwest Airlines Flight: St. Louis to Denver Route Map

Flight Delay Compensation up to 600€/$: Claim for delay, cancellation, or baggage issues >
New Flights: JA5640 IZ290 MS6119 OB646 AI4307 SM3602 G43775 4M2107 S4449 S4448
See Also: Flight Tracker Airports Airlines News Flights Monitor Delay Compensation
Flight-schedule data supplied by Aviation Edge Real-time Flight Schedules API.