Flight OddsUA1239 ORD → ROC
United Airlines · Chicago, IL to Rochester, NY · 226 flights observed, 2025-07-01 to 2026-06-30 · 528 mi
UA1239 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
69%
Median delay
-1 min
90th percentile
+58 min
Cancellation rate
1%
How often is UA1239 on time?
Across 226 flights on ORD → ROC from 2025-07-01 to 2026-06-30, UA1239 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +58 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 154 | 69% |
| 16-30 min | 26 | 12% |
| 31-60 min | 21 | 9% |
| 61-120 min | 13 | 6% |
| 2+ hrs | 9 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 58% | +29 min |
| 2025-08 | 30 | 77% | +7 min |
| 2025-09 | 30 | 67% | +19 min |
| 2025-10 | 30 | 70% | +11 min |
| 2025-11 | 27 | 70% | +19 min |
| 2025-12 | 14 | 79% | +1 min |
| 2026-01 | 5 | 60% | +9 min |
| 2026-04 | 1 | 100% | -11 min |
| 2026-05 | 29 | 69% | +9 min |
| 2026-06 | 26 | 69% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 33 | 67% |
| Tue | 33 | 67% |
| Wed | 32 | 63% |
| Thu | 33 | 79% |
| Fri | 33 | 76% |
| Sat | 26 | 69% |
| Sun | 33 | 64% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…