Flight OddsUA4843 IAD → ROC
United Airlines · Washington, DC to Rochester, NY · 227 flights observed, 2025-07-01 to 2026-05-20 · 287 mi
UA4843 covers more than one route in the data window — the stats below are for IAD → ROC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
85%
Median delay
-6 min
90th percentile
+33 min
Cancellation rate
3%
How often is UA4843 on time?
Across 227 flights on IAD → ROC from 2025-07-01 to 2026-05-20, UA4843 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +33 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 186 | 85% |
| 16-30 min | 10 | 5% |
| 31-60 min | 12 | 5% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 7 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 80% | +16 min |
| 2025-08 | 15 | 93% | -5 min |
| 2025-09 | 6 | 83% | +20 min |
| 2025-10 | 25 | 80% | +9 min |
| 2025-12 | 12 | 58% | +38 min |
| 2026-01 | 30 | 70% | +18 min |
| 2026-02 | 27 | 96% | -5 min |
| 2026-03 | 30 | 83% | +4 min |
| 2026-04 | 30 | 97% | -11 min |
| 2026-05 | 20 | 95% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 31 | 84% |
| Tue | 31 | 97% |
| Wed | 31 | 84% |
| Thu | 34 | 85% |
| Fri | 34 | 76% |
| Sat | 27 | 89% |
| Sun | 32 | 78% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…