Flight OddsSTL → DEN Southwest Airlines
Southwest Airlines · St. Louis, MO to Denver, CO · 2,165 flights, 2025-07-01 to 2026-06-30 · aggregated across 93 flight numbers
On-time arrival
75%
Median delay
-1 min
90th percentile
+55 min
Cancellation rate
0%
How on-time is Southwest Airlines from STL to DEN?
Across every Southwest Airlines flight number on STL → DEN (2,165 flights, 2025-07-01 to 2026-06-30), 75% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +55 min or later. 0% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,607 | 75% |
| 16-30 min | 194 | 9% |
| 31-60 min | 163 | 8% |
| 61-120 min | 117 | 5% |
| 2+ hrs | 75 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 205 | 69% | +21 min |
| 2025-08 | 182 | 71% | +20 min |
| 2025-09 | 176 | 77% | +7 min |
| 2025-10 | 185 | 79% | +7 min |
| 2025-11 | 155 | 83% | +4 min |
| 2025-12 | 168 | 69% | +21 min |
| 2026-01 | 155 | 86% | -4 min |
| 2026-02 | 159 | 82% | +1 min |
| 2026-03 | 193 | 74% | +10 min |
| 2026-04 | 184 | 77% | +7 min |
| 2026-05 | 187 | 70% | +18 min |
| 2026-06 | 207 | 63% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 327 | 69% |
| Tue | 312 | 81% |
| Wed | 302 | 80% |
| Thu | 319 | 72% |
| Fri | 326 | 74% |
| Sat | 232 | 75% |
| Sun | 338 | 71% |
WN flight numbers on STL → DEN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…