American Airlines · Burlington, VT to Philadelphia, PA · 27 flights observed, 2025-07-06 to 2025-08-05 · 335 mi
AA4509 covers more than one route in the data window — the stats below are for BTV → PHL, the one it has flown most recently. The others are linked under “Other routes”.
How often is AA4509 on time?
Across 27 flights on BTV → PHL from 2025-07-06 to 2025-08-05, AA4509 arrived within 15 minutes of schedule 36% of the time. The median arrival delay was +31 min, and the worst 10% of flights arrived +154 min or later. 19% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 8 | 36% |
| 16-30 min | 3 | 14% |
| 31-60 min | 6 | 27% |
| 61-120 min | 2 | 9% |
| 2+ hrs | 3 | 14% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 18 | 22% | +64 min |
| 2025-08 | 4 | 100% | 0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 25% |
| Tue | 4 | 75% |
| Wed | 2 | 0% |
| Thu | 3 | 33% |
| Fri | 4 | 50% |
| Sat | No data | — |
| Sun | 5 | 20% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…