Flight OddsWN4539 MDW → CHS
Southwest Airlines · Chicago, IL to Charleston, SC · 49 flights observed, 2025-08-05 to 2025-10-01 · 745 mi
WN4539 covers more than one route in the data window — the stats below are for MDW → CHS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
79%
Median delay
-1 min
90th percentile
+33 min
Cancellation rate
2%
How often is WN4539 on time?
Across 49 flights on MDW → CHS from 2025-08-05 to 2025-10-01, WN4539 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +33 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 38 | 79% |
| 16-30 min | 4 | 8% |
| 31-60 min | 3 | 6% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 21 | 76% | +20 min |
| 2025-09 | 26 | 81% | -3 min |
| 2025-10 | 1 | 100% | -14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 71% |
| Tue | 9 | 78% |
| Wed | 9 | 89% |
| Thu | 8 | 63% |
| Fri | 8 | 75% |
| Sat | No data | — |
| 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…