Flight OddsUA393 ONT → SFO
United Airlines · Ontario, CA to San Francisco, CA · 68 flights observed, 2025-08-19 to 2025-10-25 · 363 mi
UA393 covers more than one route in the data window — the stats below are for ONT → SFO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
31%
Median delay
+25 min
90th percentile
+104 min
Cancellation rate
0%
How often is UA393 on time?
Across 68 flights on ONT → SFO from 2025-08-19 to 2025-10-25, UA393 arrived within 15 minutes of schedule 31% of the time. The median arrival delay was +25 min, and the worst 10% of flights arrived +104 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 | 21 | 31% |
| 16-30 min | 22 | 32% |
| 31-60 min | 10 | 15% |
| 61-120 min | 9 | 13% |
| 2+ hrs | 6 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 38% | +43 min |
| 2025-09 | 30 | 30% | +33 min |
| 2025-10 | 25 | 28% | +42 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 11% |
| Tue | 10 | 20% |
| Wed | 10 | 40% |
| Thu | 10 | 40% |
| Fri | 10 | 30% |
| Sat | 10 | 70% |
| Sun | 9 | 0% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…