Flight OddsAA4756 ORD → BOS
American Airlines · Chicago, IL to Boston, MA · 54 flights observed, 2026-02-12 to 2026-04-06 · 867 mi
AA4756 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
81%
Median delay
-4 min
90th percentile
+24 min
Cancellation rate
4%
How often is AA4756 on time?
Across 54 flights on ORD → BOS from 2026-02-12 to 2026-04-06, AA4756 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +24 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 42 | 81% |
| 16-30 min | 6 | 12% |
| 31-60 min | 0 | 0% |
| 61-120 min | 2 | 4% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 15 | 73% | +1 min |
| 2026-03 | 31 | 87% | +4 min |
| 2026-04 | 6 | 67% | +33 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 71% |
| Tue | 6 | 100% |
| Wed | 7 | 86% |
| Thu | 8 | 88% |
| Fri | 8 | 50% |
| Sat | 8 | 88% |
| Sun | 8 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…