Flight OddsWN3166 STL → MDW
Southwest Airlines · St. Louis, MO to Chicago, IL · 25 flights observed, 2026-04-07 to 2026-06-03 · 251 mi
WN3166 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
84%
Median delay
-12 min
90th percentile
+23 min
Cancellation rate
0%
How often is WN3166 on time?
Across 25 flights on STL → MDW from 2026-04-07 to 2026-06-03, WN3166 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +23 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 | 84% |
| 16-30 min | 3 | 12% |
| 31-60 min | 1 | 4% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 10 | 90% | -8 min |
| 2026-05 | 13 | 77% | -4 min |
| 2026-06 | 2 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 9 | 89% |
| Wed | 8 | 75% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…