Flight OddsUA1561 SFO → ONT
United Airlines · San Francisco, CA to Ontario, CA · 76 flights observed, 2026-03-05 to 2026-05-20 · 363 mi
UA1561 covers more than one route in the data window — the stats below are for SFO → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
89%
Median delay
-13 min
90th percentile
+17 min
Cancellation rate
0%
How often is UA1561 on time?
Across 76 flights on SFO → ONT from 2026-03-05 to 2026-05-20, UA1561 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -13 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 | 68 | 89% |
| 16-30 min | 3 | 4% |
| 31-60 min | 4 | 5% |
| 61-120 min | 1 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 27 | 93% | -2 min |
| 2026-04 | 30 | 87% | -8 min |
| 2026-05 | 19 | 89% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 11 | 91% |
| Tue | 11 | 82% |
| Wed | 11 | 100% |
| Thu | 11 | 82% |
| Fri | 10 | 80% |
| Sat | 11 | 91% |
| Sun | 11 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…