C
Is Southwest Airlines on time St. Louis to Denver?
2,165 flights · January 2025 – August 2026 · all airlines on STL to DEN →
73.33%
Arrived on time
Route average 74.9%
0.23%
Cancelled
Route average 0.41%
60 min
When late, late by
The other airlines on this route
| Airline | Flights | On time | Grade |
|---|---|---|---|
| United Airlines | 1,071 | 76.58% | C |
| Frontier Airlines | 277 | 74.45% | D |
| SkyWest Airlines | 142 | 87.14% | A |
Month by month
Jul 2025
peak 85
Jun 2026