Flight OddsBWI → BOS Southwest Airlines
Southwest Airlines · Baltimore, MD to Boston, MA · 2,372 flights, 2025-07-01 to 2026-06-30 · aggregated across 125 flight numbers
On-time arrival
73%
Median delay
-3 min
90th percentile
+58 min
Cancellation rate
2%
How on-time is Southwest Airlines from BWI to BOS?
Across every Southwest Airlines flight number on BWI → BOS (2,372 flights, 2025-07-01 to 2026-06-30), 73% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +58 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,689 | 73% |
| 16-30 min | 200 | 9% |
| 31-60 min | 209 | 9% |
| 61-120 min | 146 | 6% |
| 2+ hrs | 71 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 200 | 69% | +22 min |
| 2025-08 | 193 | 77% | +10 min |
| 2025-09 | 187 | 59% | +33 min |
| 2025-10 | 228 | 66% | +21 min |
| 2025-11 | 197 | 85% | +2 min |
| 2025-12 | 205 | 71% | +8 min |
| 2026-01 | 153 | 83% | -4 min |
| 2026-02 | 143 | 83% | 0 min |
| 2026-03 | 171 | 70% | +11 min |
| 2026-04 | 212 | 78% | +4 min |
| 2026-05 | 227 | 70% | +10 min |
| 2026-06 | 199 | 69% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 337 | 70% |
| Tue | 330 | 74% |
| Wed | 322 | 76% |
| Thu | 337 | 70% |
| Fri | 344 | 74% |
| Sat | 295 | 80% |
| Sun | 350 | 68% |
WN flight numbers on BWI → BOS
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…