Flight OddsUnited Airlines · Salt Lake City, UT to San Francisco, CA · 58 flights observed, 2026-01-06 to 2026-03-04 · 599 mi
UA1581 covers more than one route in the data window — the stats below are for SLC → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA1581 on time?
Across 58 flights on SLC → SFO from 2026-01-06 to 2026-03-04, UA1581 arrived within 15 minutes of schedule 76% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +49 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 | 44 | 76% |
| 16-30 min | 5 | 9% |
| 31-60 min | 5 | 9% |
| 61-120 min | 3 | 5% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 81% | +2 min |
| 2026-02 | 28 | 75% | +2 min |
| 2026-03 | 4 | 50% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 63% |
| Tue | 9 | 67% |
| Wed | 9 | 78% |
| Thu | 8 | 63% |
| Fri | 8 | 100% |
| Sat | 8 | 88% |
| Sun | 8 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…