Flight OddsWN1851 DAL → MDW
Southwest Airlines · Dallas, TX to Chicago, IL · 34 flights observed, 2025-07-01 to 2025-08-04 · 793 mi
WN1851 covers more than one route in the data window — the stats below are for DAL → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
48%
Median delay
+18 min
90th percentile
+135 min
Cancellation rate
3%
How often is WN1851 on time?
Across 34 flights on DAL → MDW from 2025-07-01 to 2025-08-04, WN1851 arrived within 15 minutes of schedule 48% of the time. The median arrival delay was +18 min, and the worst 10% of flights arrived +135 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 16 | 48% |
| 16-30 min | 4 | 12% |
| 31-60 min | 6 | 18% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 4 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 48% | +49 min |
| 2025-08 | 4 | 50% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 40% |
| Tue | 5 | 80% |
| Wed | 5 | 80% |
| Thu | 5 | 20% |
| Fri | 3 | 67% |
| Sat | 5 | 40% |
| Sun | 5 | 20% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…