Flight OddsWN856 BWI → BOS
Southwest Airlines · Baltimore, MD to Boston, MA · 44 flights observed, 2025-11-02 to 2026-01-05 · 369 mi
WN856 covers more than one route in the data window — the stats below are for BWI → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
75%
Median delay
-4 min
90th percentile
+33 min
Cancellation rate
0%
How often is WN856 on time?
Across 44 flights on BWI → BOS from 2025-11-02 to 2026-01-05, WN856 arrived within 15 minutes of schedule 75% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +33 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 | 33 | 75% |
| 16-30 min | 6 | 14% |
| 31-60 min | 3 | 7% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 24 | 79% | +4 min |
| 2025-12 | 18 | 72% | +5 min |
| 2026-01 | 2 | 50% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 86% |
| Tue | 6 | 50% |
| Wed | 6 | 100% |
| Thu | 8 | 75% |
| Fri | 6 | 50% |
| Sat | 4 | 75% |
| Sun | 7 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…