Flight OddsWN839 STL → MDW
Southwest Airlines · St. Louis, MO to Chicago, IL · 6 flights observed, 2026-01-11 to 2026-02-01 · 251 mi
WN839 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
50%
Median delay
+17 min
90th percentile
+61 min
Cancellation rate
0%
How often is WN839 on time?
Across 6 flights on STL → MDW from 2026-01-11 to 2026-02-01, WN839 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +17 min, and the worst 10% of flights arrived +61 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 | 3 | 50% |
| 16-30 min | 1 | 17% |
| 31-60 min | 1 | 17% |
| 61-120 min | 1 | 17% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 5 | 60% | +20 min |
| 2026-02 | 1 | 0% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 0% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 1 | 100% |
| Fri | 1 | 100% |
| Sat | No data | — |
| Sun | 3 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…