Flight OddsWN2521 BHM → MDW
Southwest Airlines · Birmingham, AL to Chicago, IL · 24 flights observed, 2025-08-07 to 2025-09-29 · 570 mi
WN2521 covers more than one route in the data window — the stats below are for BHM → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-5 min
90th percentile
+18 min
Cancellation rate
4%
How often is WN2521 on time?
Across 24 flights on BHM → MDW from 2025-08-07 to 2025-09-29, WN2521 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +18 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 20 | 87% |
| 16-30 min | 2 | 9% |
| 31-60 min | 1 | 4% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 10 | 90% | -3 min |
| 2025-09 | 13 | 85% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 86% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 8 | 88% |
| Fri | 8 | 88% |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…