WN736 BOS → MDW
Southwest Airlines · Boston, MA to Chicago, IL · 32 flights observed, 2025-08-07 to 2025-09-29 · 861 mi
WN736 covers more than one route in the data window — the stats below are for BOS → MDW, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
45%
Median delay
+22 min
90th percentile
+77 min
Cancellation rate
3%
How often is WN736 on time?
Across 32 flights on BOS → MDW from 2025-08-07 to 2025-09-29, WN736 arrived within 15 minutes of schedule 45% of the time. The median arrival delay was +22 min, and the worst 10% of flights arrived +77 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 | 14 | 45% |
| 16-30 min | 4 | 13% |
| 31-60 min | 7 | 23% |
| 61-120 min | 3 | 10% |
| 2+ hrs | 3 | 10% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 15 | 60% | +27 min |
| 2025-09 | 16 | 31% | +51 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 38% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 7 | 29% |
| Fri | 8 | 38% |
| Sat | 8 | 75% |
| 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…