Flight OddsAA4721 BOS → JFK
American Airlines · Boston, MA to New York, NY · 283 flights observed, 2025-07-01 to 2026-05-20 · 187 mi
AA4721 covers more than one route in the data window — the stats below are for BOS → JFK, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
77%
Median delay
-9 min
90th percentile
+54 min
Cancellation rate
3%
How often is AA4721 on time?
Across 283 flights on BOS → JFK from 2025-07-01 to 2026-05-20, AA4721 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +54 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 212 | 77% |
| 16-30 min | 19 | 7% |
| 31-60 min | 20 | 7% |
| 61-120 min | 16 | 6% |
| 2+ hrs | 7 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 87% | -4 min |
| 2025-08 | 5 | 60% | +14 min |
| 2025-09 | 28 | 82% | +1 min |
| 2025-10 | 30 | 73% | +5 min |
| 2025-11 | 28 | 75% | +9 min |
| 2025-12 | 22 | 82% | +7 min |
| 2026-01 | 24 | 79% | +2 min |
| 2026-02 | 25 | 84% | +4 min |
| 2026-03 | 31 | 68% | +25 min |
| 2026-04 | 30 | 73% | +1 min |
| 2026-05 | 20 | 75% | +11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 38 | 76% |
| Tue | 40 | 78% |
| Wed | 41 | 76% |
| Thu | 39 | 72% |
| Fri | 39 | 87% |
| Sat | 40 | 80% |
| Sun | 37 | 73% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…