Flight OddsAA4634 JFK → BOS
American Airlines · New York, NY to Boston, MA · 41 flights observed, 2026-05-21 to 2026-06-30 · 187 mi
AA4634 covers more than one route in the data window — the stats below are for JFK → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
74%
Median delay
-6 min
90th percentile
+49 min
Cancellation rate
5%
How often is AA4634 on time?
Across 41 flights on JFK → BOS from 2026-05-21 to 2026-06-30, AA4634 arrived within 15 minutes of schedule 74% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +49 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 | 29 | 74% |
| 16-30 min | 5 | 13% |
| 31-60 min | 1 | 3% |
| 61-120 min | 3 | 8% |
| 2+ hrs | 1 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 11 | 91% | -6 min |
| 2026-06 | 28 | 68% | +13 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 83% |
| Tue | 6 | 83% |
| Wed | 4 | 75% |
| Thu | 6 | 67% |
| Fri | 6 | 83% |
| Sat | 5 | 100% |
| Sun | 6 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…