Flight OddsWN3787 MDW → BOS
Southwest Airlines · Chicago, IL to Boston, MA · 35 flights observed, 2025-07-01 to 2025-08-04 · 861 mi
WN3787 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
65%
Median delay
-2 min
90th percentile
+102 min
Cancellation rate
3%
How often is WN3787 on time?
Across 35 flights on MDW → BOS from 2025-07-01 to 2025-08-04, WN3787 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +102 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 | 22 | 65% |
| 16-30 min | 2 | 6% |
| 31-60 min | 4 | 12% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 3 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 63% | +31 min |
| 2025-08 | 4 | 75% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 20% |
| Tue | 5 | 100% |
| Wed | 5 | 100% |
| Thu | 4 | 25% |
| Fri | 5 | 60% |
| Sat | 5 | 80% |
| Sun | 5 | 60% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…