Flight OddsAA4638 ROC → ORD
American Airlines · Rochester, NY to Chicago, IL · 36 flights observed, 2026-01-07 to 2026-02-11 · 528 mi
AA4638 covers more than one route in the data window — the stats below are for ROC → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-21 min
90th percentile
+42 min
Cancellation rate
0%
How often is AA4638 on time?
Across 36 flights on ROC → ORD from 2026-01-07 to 2026-02-11, AA4638 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -21 min, and the worst 10% of flights arrived +42 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 | 32 | 89% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 3% |
| 2+ hrs | 3 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 25 | 88% | +6 min |
| 2026-02 | 11 | 91% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 80% |
| Wed | 6 | 100% |
| Thu | 5 | 100% |
| Fri | 5 | 100% |
| Sat | 5 | 80% |
| Sun | 5 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…