Flight OddsUA4537 IAD → RDU
United Airlines · Washington, DC to Raleigh/Durham, NC · 3 flights observed, 2026-02-16 to 2026-03-02 · 225 mi
UA4537 covers more than one route in the data window — the stats below are for IAD → RDU, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
67%
Median delay
+7 min
90th percentile
+37 min
Cancellation rate
0%
How often is UA4537 on time?
Across 3 flights on IAD → RDU from 2026-02-16 to 2026-03-02, UA4537 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +37 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 | 67% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 33% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 2 | 50% | +26 min |
| 2026-03 | 1 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | No data | — |
| 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…