United Airlines · Raleigh/Durham, NC to San Francisco, CA · 139 flights observed, 2025-08-19 to 2026-01-05 · 2,400 mi
UA1204 covers more than one route in the data window — the stats below are for RDU → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA1204 on time?
Across 139 flights on RDU → SFO from 2025-08-19 to 2026-01-05, UA1204 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +15 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 | 126 | 91% |
| 16-30 min | 12 | 9% |
| 31-60 min | 1 | 1% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 100% | -8 min |
| 2025-09 | 30 | 93% | -15 min |
| 2025-10 | 31 | 90% | -6 min |
| 2025-11 | 30 | 93% | -10 min |
| 2025-12 | 31 | 90% | -3 min |
| 2026-01 | 4 | 25% | +21 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 90% |
| Tue | 20 | 95% |
| Wed | 20 | 95% |
| Thu | 19 | 100% |
| Fri | 20 | 80% |
| Sat | 20 | 100% |
| Sun | 20 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…