Flight OddsWN4573 STL → DEN
Southwest Airlines · St. Louis, MO to Denver, CO · 31 flights observed, 2025-10-02 to 2025-11-01 · 770 mi
WN4573 covers more than one route in the data window — the stats below are for STL → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
68%
Median delay
+10 min
90th percentile
+96 min
Cancellation rate
0%
How often is WN4573 on time?
Across 31 flights on STL → DEN from 2025-10-02 to 2025-11-01, WN4573 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +96 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 | 21 | 68% |
| 16-30 min | 1 | 3% |
| 31-60 min | 2 | 6% |
| 61-120 min | 5 | 16% |
| 2+ hrs | 2 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 30 | 67% | +29 min |
| 2025-11 | 1 | 100% | -23 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 0% |
| Tue | 4 | 100% |
| Wed | 4 | 100% |
| Thu | 5 | 80% |
| Fri | 5 | 80% |
| Sat | 5 | 60% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…