Flight OddsUA4256 IAD → CHS
United Airlines · Washington, DC to Charleston, SC · 5 flights observed, 2025-08-23 to 2025-09-20 · 442 mi
UA4256 covers more than one route in the data window — the stats below are for IAD → CHS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
40%
Median delay
+28 min
90th percentile
+71 min
Cancellation rate
0%
How often is UA4256 on time?
Across 5 flights on IAD → CHS from 2025-08-23 to 2025-09-20, UA4256 arrived within 15 minutes of schedule 40% of the time. The median arrival delay was +28 min, and the worst 10% of flights arrived +71 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 | 2 | 40% |
| 16-30 min | 1 | 20% |
| 31-60 min | 1 | 20% |
| 61-120 min | 1 | 20% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 2 | 50% | +42 min |
| 2025-09 | 3 | 33% | +34 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 5 | 40% |
| Sun | No data | — |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…