Flight OddsAA4766 ORD → BOS
American Airlines · Chicago, IL to Boston, MA · 9 flights observed, 2025-07-08 to 2025-08-05 · 867 mi
AA4766 covers more than one route in the data window — the stats below are for ORD → BOS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
56%
Median delay
-2 min
90th percentile
+81 min
Cancellation rate
0%
How often is AA4766 on time?
Across 9 flights on ORD → BOS from 2025-07-08 to 2025-08-05, AA4766 arrived within 15 minutes of schedule 56% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +81 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 5 | 56% |
| 16-30 min | 1 | 11% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 22% |
| 2+ hrs | 1 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 8 | 50% | +28 min |
| 2025-08 | 1 | 100% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | 5 | 80% |
| Wed | 4 | 25% |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…