Flight OddsAmerican Airlines · Philadelphia, PA to Burlington, VT · 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 PHL → BTV, the one it has flown most recently. The others are linked under “Other routes”.
How often is AA4509 on time?
Across 27 flights on PHL → BTV from 2025-07-06 to 2025-08-05, AA4509 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +93 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 17 | 65% |
| 16-30 min | 3 | 12% |
| 31-60 min | 2 | 8% |
| 61-120 min | 2 | 8% |
| 2+ hrs | 2 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 22 | 59% | +34 min |
| 2025-08 | 4 | 100% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 80% |
| Wed | 4 | 50% |
| Thu | 3 | 67% |
| Fri | 4 | 75% |
| Sat | No data | — |
| 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…