Flight OddsUnited Airlines · Washington, DC to Raleigh/Durham, NC · 30 flights observed, 2025-07-01 to 2025-07-30 · 225 mi
UA4173 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”.
How often is UA4173 on time?
Across 30 flights on IAD → RDU from 2025-07-01 to 2025-07-30, UA4173 arrived within 15 minutes of schedule 45% of the time. The median arrival delay was +40 min, and the worst 10% of flights arrived +292 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 | 13 | 45% |
| 16-30 min | 1 | 3% |
| 31-60 min | 3 | 10% |
| 61-120 min | 3 | 10% |
| 2+ hrs | 9 | 31% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 45% | +97 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 25% |
| Tue | 5 | 40% |
| Wed | 5 | 40% |
| Thu | 4 | 25% |
| Fri | 4 | 100% |
| Sat | 4 | 50% |
| Sun | 3 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…