Flight OddsWN4156 DEN → STL
Southwest Airlines · Denver, CO to St. Louis, MO · 10 flights observed, 2025-12-19 to 2026-01-04 · 770 mi
WN4156 covers more than one route in the data window — the stats below are for DEN → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
60%
Median delay
+11 min
90th percentile
+129 min
Cancellation rate
0%
How often is WN4156 on time?
Across 10 flights on DEN → STL from 2025-12-19 to 2026-01-04, WN4156 arrived within 15 minutes of schedule 60% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +129 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 6 | 60% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 10% |
| 61-120 min | 1 | 10% |
| 2+ hrs | 2 | 20% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 8 | 50% | +49 min |
| 2026-01 | 2 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 50% |
| Tue | 2 | 50% |
| Wed | No data | — |
| Thu | No data | — |
| Fri | 3 | 67% |
| Sat | No data | — |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…