Flight OddsAA4639 ORD → ROC
American Airlines · Chicago, IL to Rochester, NY · 37 flights observed, 2026-01-06 to 2026-02-11 · 528 mi
AA4639 covers more than one route in the data window — the stats below are for ORD → ROC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
66%
Median delay
-3 min
90th percentile
+61 min
Cancellation rate
5%
How often is AA4639 on time?
Across 37 flights on ORD → ROC from 2026-01-06 to 2026-02-11, AA4639 arrived within 15 minutes of schedule 66% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +61 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 | 23 | 66% |
| 16-30 min | 3 | 9% |
| 31-60 min | 5 | 14% |
| 61-120 min | 4 | 11% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 24 | 71% | +11 min |
| 2026-02 | 11 | 55% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 6 | 83% |
| Wed | 6 | 83% |
| Thu | 5 | 60% |
| Fri | 4 | 50% |
| Sat | 5 | 60% |
| Sun | 4 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…