Southwest Airlines

WN3912St. Louis to Denver

Name: Southwest Airlines WN3912 St. Louis to Denver: on-time record
Creator: TripStow
License: https://tripstow.com/notices

Southwest Airlines flight WN3912 flies from St. Louis (STL) to Denver (DEN), 1,236 km. Over August 2025 to July 2026 it usually arrives about 15 minutes late: 65% of 209 flights arrived within 15 minutes of schedule and 0.5% were cancelled (US Department of Transportation data).

On-time record, last 12 months

65%

on time (within 15 min)

23%

more than 30 min late

0.5%

cancelled

+15 min

average arrival vs schedule

Every operation of WN3912, August 2025 to July 2026: 209 flights. Source: US Bureau of Transportation Statistics, public domain.

Routes flown as WN3912

St. Louis (STL) to Denver (DEN)58 flights
Oakland (OAK) to Santa Ana (SNA)41 flights
Phoenix Sky Harbor (PHX) to Tucson (TUS)34 flights
Orlando (MCO) to Knoxville (TYS)33 flights
Knoxville (TYS) to Nashville (BNA)28 flights
Chicago Midway (MDW) to Minneapolis (MSP)5 flights
Knoxville (TYS) to Dallas Love Field (DAL)5 flights
Chicago Midway (MDW) to San Antonio (SAT)4 flights
Nashville (BNA) to Austin Bergstrom (AUS)1 flights

Other flights from St. Louis to Denver

WN1091 WN1192 WN121 WN1225 WN126 WN1424 WN1452 WN1454 WN1622 WN1678 WN1688 WN1722

More about St. Louis (STL) and Denver (DEN).

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