Flight OddsAA4440 BUF → BOS
American Airlines · Buffalo, NY to Boston, MA · 29 flights observed, 2026-05-21 to 2026-06-30 · 395 mi
AA4440 covers more than one route in the data window — the stats below are for BUF → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-14 min
90th percentile
+58 min
Cancellation rate
3%
How often is AA4440 on time?
Across 29 flights on BUF → BOS from 2026-05-21 to 2026-06-30, AA4440 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +58 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 | 20 | 71% |
| 16-30 min | 2 | 7% |
| 31-60 min | 3 | 11% |
| 61-120 min | 2 | 7% |
| 2+ hrs | 1 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-05 | 7 | 71% | +11 min |
| 2026-06 | 21 | 71% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 83% |
| Tue | 6 | 67% |
| Wed | 5 | 60% |
| Thu | 5 | 80% |
| Fri | No data | — |
| Sat | No data | — |
| 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…