Flight OddsWN2531 SEA → MDW
Southwest Airlines · Seattle, WA to Chicago, IL · 8 flights observed, 2025-08-10 to 2025-09-28 · 1,733 mi
WN2531 covers more than one route in the data window — the stats below are for SEA → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+12 min
90th percentile
+44 min
Cancellation rate
0%
How often is WN2531 on time?
Across 8 flights on SEA → MDW from 2025-08-10 to 2025-09-28, WN2531 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +44 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 | 4 | 50% |
| 16-30 min | 2 | 25% |
| 31-60 min | 1 | 13% |
| 61-120 min | 1 | 13% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 4 | 50% | +27 min |
| 2025-09 | 4 | 50% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 8 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…