Flight OddsUnited Airlines · Raleigh/Durham, NC to San Francisco, CA · 53 flights observed, 2026-03-29 to 2026-05-20 · 2,400 mi
UA1604 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 UA1604 on time?
Across 53 flights on RDU → SFO from 2026-03-29 to 2026-05-20, UA1604 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived 0 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 | 50 | 96% |
| 16-30 min | 2 | 4% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 2 | 100% | -23 min |
| 2026-04 | 30 | 97% | -11 min |
| 2026-05 | 20 | 95% | -17 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 100% |
| Tue | 7 | 100% |
| Wed | 8 | 100% |
| Thu | 7 | 86% |
| Fri | 7 | 86% |
| Sat | 7 | 100% |
| Sun | 8 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…