Flight OddsWN937 MDW → BOS
Southwest Airlines · Chicago, IL to Boston, MA · 23 flights observed, 2025-07-01 to 2025-08-01 · 861 mi
WN937 covers more than one route in the data window — the stats below are for MDW → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
32%
Median delay
+27 min
90th percentile
+102 min
Cancellation rate
4%
How often is WN937 on time?
Across 23 flights on MDW → BOS from 2025-07-01 to 2025-08-01, WN937 arrived within 15 minutes of schedule 32% of the time. The median arrival delay was +27 min, and the worst 10% of flights arrived +102 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 | 7 | 32% |
| 16-30 min | 7 | 32% |
| 31-60 min | 4 | 18% |
| 61-120 min | 3 | 14% |
| 2+ hrs | 1 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 21 | 33% | +40 min |
| 2025-08 | 1 | 0% | +18 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | 5 | 60% |
| Wed | 5 | 20% |
| Thu | 5 | 20% |
| Fri | 3 | 0% |
| 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…