Flight OddsONT → ORD United Airlines
United Airlines · Ontario, CA to Chicago, IL · 291 flights, 2025-07-01 to 2026-06-30 · aggregated across 8 flight numbers
On-time arrival
80%
Median delay
-1 min
90th percentile
+38 min
Cancellation rate
1%
How on-time is United Airlines from ONT to ORD?
Across every United Airlines flight number on ONT → ORD (291 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -1 min; the worst 10% ran +38 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 230 | 80% |
| 16-30 min | 20 | 7% |
| 31-60 min | 20 | 7% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 11 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 81% | +10 min |
| 2025-08 | 30 | 83% | +3 min |
| 2025-09 | 29 | 86% | +7 min |
| 2025-10 | 31 | 74% | +2 min |
| 2025-11 | 30 | 77% | +48 min |
| 2025-12 | 15 | 80% | +6 min |
| 2026-01 | 5 | 100% | -14 min |
| 2026-03 | 26 | 73% | +15 min |
| 2026-04 | 29 | 83% | +9 min |
| 2026-05 | 31 | 77% | +6 min |
| 2026-06 | 29 | 86% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 42 | 86% |
| Tue | 40 | 78% |
| Wed | 39 | 87% |
| Thu | 42 | 79% |
| Fri | 39 | 82% |
| Sat | 42 | 86% |
| Sun | 42 | 67% |
UA flight numbers on ONT → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…