Flight OddsUnited Airlines · San Francisco, CA to Sacramento, CA · 256 flights observed, 2025-07-01 to 2026-05-20 · 86 mi
UA5566 covers more than one route in the data window — the stats below are for SFO → SMF, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA5566 on time?
Across 256 flights on SFO → SMF from 2025-07-01 to 2026-05-20, UA5566 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +38 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 200 | 79% |
| 16-30 min | 23 | 9% |
| 31-60 min | 15 | 6% |
| 61-120 min | 11 | 4% |
| 2+ hrs | 4 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 67% | +16 min |
| 2025-08 | 26 | 85% | +7 min |
| 2025-09 | 17 | 82% | +2 min |
| 2025-10 | 6 | 83% | +1 min |
| 2025-11 | 28 | 82% | 0 min |
| 2025-12 | 28 | 79% | +36 min |
| 2026-01 | 23 | 83% | +79 min |
| 2026-02 | 25 | 84% | +22 min |
| 2026-03 | 20 | 95% | -7 min |
| 2026-04 | 30 | 83% | +5 min |
| 2026-05 | 20 | 50% | +16 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 41 | 78% |
| Tue | 28 | 96% |
| Wed | 35 | 74% |
| Thu | 40 | 85% |
| Fri | 40 | 78% |
| Sat | 31 | 81% |
| Sun | 38 | 66% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…