Flight OddsUA4236 ROA → IAD
United Airlines · Roanoke, VA to Washington, DC · 21 flights observed, 2026-04-30 to 2026-05-20 · 177 mi
UA4236 covers more than one route in the data window — the stats below are for ROA → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
80%
Median delay
-12 min
90th percentile
+47 min
Cancellation rate
5%
How often is UA4236 on time?
Across 21 flights on ROA → IAD from 2026-04-30 to 2026-05-20, UA4236 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +47 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 | 16 | 80% |
| 16-30 min | 0 | 0% |
| 31-60 min | 3 | 15% |
| 61-120 min | 1 | 5% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 1 | 100% | -14 min |
| 2026-05 | 19 | 79% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 3 | 100% |
| Wed | 2 | 0% |
| Thu | 3 | 100% |
| Fri | 3 | 67% |
| Sat | 3 | 100% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…