Flight OddsUA566 SMF → DEN
United Airlines · Sacramento, CA to Denver, CO · 248 flights observed, 2025-09-25 to 2026-06-30 · 909 mi
UA566 covers more than one route in the data window — the stats below are for SMF → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-3 min
90th percentile
+17 min
Cancellation rate
0%
How often is UA566 on time?
Across 248 flights on SMF → DEN from 2025-09-25 to 2026-06-30, UA566 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +17 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 | 221 | 89% |
| 16-30 min | 12 | 5% |
| 31-60 min | 7 | 3% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-09 | 6 | 100% | -3 min |
| 2025-10 | 31 | 97% | -3 min |
| 2025-11 | 29 | 97% | -3 min |
| 2025-12 | 17 | 94% | +2 min |
| 2026-01 | 22 | 73% | +6 min |
| 2026-02 | 27 | 81% | +1 min |
| 2026-03 | 29 | 90% | +4 min |
| 2026-04 | 26 | 92% | -5 min |
| 2026-05 | 31 | 87% | +1 min |
| 2026-06 | 30 | 87% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 86% |
| Tue | 38 | 95% |
| Wed | 37 | 84% |
| Thu | 35 | 83% |
| Fri | 36 | 89% |
| Sat | 31 | 97% |
| Sun | 35 | 91% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…