Flight OddsUA658 ORD → ONT
United Airlines · Chicago, IL to Ontario, CA · 91 flights observed, 2026-03-29 to 2026-06-30 · 1,700 mi
UA658 covers more than one route in the data window — the stats below are for ORD → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
57%
Median delay
+12 min
90th percentile
+115 min
Cancellation rate
1%
How often is UA658 on time?
Across 91 flights on ORD → ONT from 2026-03-29 to 2026-06-30, UA658 arrived within 15 minutes of schedule 57% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +115 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 | 51 | 57% |
| 16-30 min | 7 | 8% |
| 31-60 min | 13 | 14% |
| 61-120 min | 11 | 12% |
| 2+ hrs | 8 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 3 | 67% | +118 min |
| 2026-04 | 29 | 45% | +42 min |
| 2026-05 | 28 | 57% | +32 min |
| 2026-06 | 30 | 67% | +22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 50% |
| Tue | 14 | 50% |
| Wed | 13 | 54% |
| Thu | 12 | 42% |
| Fri | 13 | 62% |
| Sat | 10 | 80% |
| Sun | 14 | 64% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…