Flight OddsORD → ONT United Airlines
United Airlines · Chicago, IL to Ontario, CA · 290 flights, 2025-07-01 to 2026-06-30 · aggregated across 12 flight numbers
On-time arrival
59%
Median delay
+7 min
90th percentile
+98 min
Cancellation rate
1%
How on-time is United Airlines from ORD to ONT?
Across every United Airlines flight number on ORD → ONT (290 flights, 2025-07-01 to 2026-06-30), 59% arrived within 15 minutes of schedule. Median arrival delay +7 min; the worst 10% ran +98 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 170 | 59% |
| 16-30 min | 31 | 11% |
| 31-60 min | 34 | 12% |
| 61-120 min | 30 | 10% |
| 2+ hrs | 22 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 47% | +40 min |
| 2025-08 | 31 | 58% | +26 min |
| 2025-09 | 30 | 60% | +11 min |
| 2025-10 | 31 | 81% | +3 min |
| 2025-11 | 30 | 63% | +35 min |
| 2025-12 | 14 | 57% | +32 min |
| 2026-01 | 5 | 60% | +14 min |
| 2026-03 | 26 | 54% | +45 min |
| 2026-04 | 29 | 45% | +42 min |
| 2026-05 | 31 | 58% | +29 min |
| 2026-06 | 30 | 67% | +22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 40 | 55% |
| Tue | 41 | 56% |
| Wed | 40 | 68% |
| Thu | 41 | 59% |
| Fri | 41 | 51% |
| Sat | 42 | 69% |
| Sun | 42 | 57% |
UA flight numbers on ORD → ONT
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…