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

WN 4122 St. Louis to Denver Flight Status

Not scheduled today. Latest flight: February 22nd, 2026 ; recent history is in the table below.

WN 4122 Flight Status & Schedule Southwest Airlines St. Louis to Denver

Date From To Departure Arrival Status Details
Feb 22 STL DEN 23:02 00:02 Landed Late Track >
Feb 20 STL DEN 22:14 23:13 Landed Track >
Feb 16 STL DEN 22:36 23:43 Landed Track >
Feb 13 STL DEN 22:32 23:35 Landed Track >
Feb 12 STL DEN 22:57 00:05 Landed Late Track >

Southwest Airlines flight WN 4122 links St. Louis and Denver, 1,235 km (768 mi) apart. With 2 h 25 min in the timetable and a usual flight time of about 2 h 5 min, it often makes up time. It is not flying today; the last flight, on 22 February 2026, landed 22 minutes late.

< All St. Louis STL Departures All Denver DEN Arrivals >

About WN 4122

Route
St. Louis Lambert International Airport STL to Denver International Airport DEN
Distance
1,235 km (768 mi)
Typical flight time
2 h 5 min
On time
3 of the last 5
Average delay when late
24 min
Usually departs from
Terminal 2

WN 4122 FAQ

How long is the WN4122 flight?
The timetable allows 2 h 25 min. St. Louis to Denver is 1,235 km (768 mi).
How often is WN4122 late?
2 of the last 5 flights arrived 15 or more minutes late; when late, by 24 minutes on average.
Which terminal does WN4122 use?
It usually leaves from Terminal 2 at St. Louis Lambert International Airport (STL). Check the flight card above for today's terminal and gate.
What other flight numbers does WN4122 have?
Also listed as SWA4122 (Southwest Airlines' ICAO code) and WN 4122.

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.