Flight OddsWN4577 BWI → BUF
Southwest Airlines · Baltimore, MD to Buffalo, NY · 16 flights observed, 2026-06-04 to 2026-06-29 · 281 mi
WN4577 covers more than one route in the data window — the stats below are for BWI → BUF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
53%
Median delay
+11 min
90th percentile
+145 min
Cancellation rate
6%
How often is WN4577 on time?
Across 16 flights on BWI → BUF from 2026-06-04 to 2026-06-29, WN4577 arrived within 15 minutes of schedule 53% of the time. The median arrival delay was +11 min, and the worst 10% of flights arrived +145 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 8 | 53% |
| 16-30 min | 1 | 7% |
| 31-60 min | 3 | 20% |
| 61-120 min | 1 | 7% |
| 2+ hrs | 2 | 13% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 15 | 53% | +39 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 25% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 4 | 50% |
| Fri | 3 | 67% |
| Sat | 4 | 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…