Flight OddsWN4401 STL → MDW
Southwest Airlines · St. Louis, MO to Chicago, IL · 32 flights observed, 2025-08-07 to 2025-09-29 · 251 mi
WN4401 covers more than one route in the data window — the stats below are for STL → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
97%
Median delay
-16 min
90th percentile
-6 min
Cancellation rate
0%
How often is WN4401 on time?
Across 32 flights on STL → MDW from 2025-08-07 to 2025-09-29, WN4401 arrived within 15 minutes of schedule 97% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived -6 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 | 31 | 97% |
| 16-30 min | 1 | 3% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 15 | 100% | -15 min |
| 2025-09 | 17 | 94% | -14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 88% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 100% |
| Fri | 8 | 100% |
| Sat | No data | — |
| Sun | 8 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…