Flight OddsWN3771 MDW → STL
Southwest Airlines · Chicago, IL to St. Louis, MO · 57 flights observed, 2025-08-05 to 2025-10-01 · 251 mi
WN3771 covers more than one route in the data window — the stats below are for MDW → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
82%
Median delay
-4 min
90th percentile
+36 min
Cancellation rate
0%
How often is WN3771 on time?
Across 57 flights on MDW → STL from 2025-08-05 to 2025-10-01, WN3771 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +36 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 | 47 | 82% |
| 16-30 min | 3 | 5% |
| 31-60 min | 5 | 9% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 26 | 77% | +13 min |
| 2025-09 | 30 | 87% | +1 min |
| 2025-10 | 1 | 100% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 75% |
| Tue | 9 | 78% |
| Wed | 9 | 89% |
| Thu | 8 | 63% |
| Fri | 8 | 100% |
| Sat | 8 | 75% |
| Sun | 7 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…