Flight OddsAA4340 BOS → PHL
American Airlines · Boston, MA to Philadelphia, PA · 61 flights observed, 2026-01-06 to 2026-03-07 · 280 mi
AA4340 covers more than one route in the data window — the stats below are for BOS → PHL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-12 min
90th percentile
+48 min
Cancellation rate
5%
How often is AA4340 on time?
Across 61 flights on BOS → PHL from 2026-01-06 to 2026-03-07, AA4340 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +48 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 43 | 74% |
| 16-30 min | 5 | 9% |
| 31-60 min | 5 | 9% |
| 61-120 min | 2 | 3% |
| 2+ hrs | 3 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 25 | 64% | +21 min |
| 2026-02 | 26 | 85% | -5 min |
| 2026-03 | 7 | 71% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 57% |
| Tue | 9 | 89% |
| Wed | 9 | 89% |
| Thu | 9 | 89% |
| Fri | 9 | 44% |
| Sat | 9 | 78% |
| Sun | 6 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…