Flight OddsUnited Airlines · Sun Valley/Hailey/Ketchum, ID to San Francisco, CA · 84 flights observed, 2025-12-11 to 2026-03-04 · 587 mi
UA4788 covers more than one route in the data window — the stats below are for SUN → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA4788 on time?
Across 84 flights on SUN → SFO from 2025-12-11 to 2026-03-04, UA4788 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +88 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 | 68 | 81% |
| 16-30 min | 1 | 1% |
| 31-60 min | 2 | 2% |
| 61-120 min | 7 | 8% |
| 2+ hrs | 6 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 21 | 57% | +54 min |
| 2026-01 | 31 | 87% | -4 min |
| 2026-02 | 28 | 89% | -11 min |
| 2026-03 | 4 | 100% | -21 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 92% |
| Tue | 12 | 83% |
| Wed | 12 | 92% |
| Thu | 12 | 83% |
| Fri | 12 | 75% |
| Sat | 12 | 75% |
| Sun | 12 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…