Flight OddsUnited Airlines · Raleigh/Durham, NC to Washington, DC · 19 flights observed, 2025-12-18 to 2026-01-05 · 225 mi
UA3663 covers more than one route in the data window — the stats below are for RDU → IAD, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA3663 on time?
Across 19 flights on RDU → IAD from 2025-12-18 to 2026-01-05, UA3663 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +47 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 | 15 | 79% |
| 16-30 min | 1 | 5% |
| 31-60 min | 1 | 5% |
| 61-120 min | 2 | 11% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 71% | +8 min |
| 2026-01 | 5 | 100% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 2 | 100% |
| Wed | 2 | 100% |
| Thu | 3 | 67% |
| Fri | 3 | 67% |
| Sat | 3 | 100% |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…