Flight OddsUA1144 ORD → ONT
United Airlines · Chicago, IL to Ontario, CA · 48 flights observed, 2025-07-01 to 2025-08-18 · 1,700 mi
UA1144 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
47%
Median delay
+20 min
90th percentile
+128 min
Cancellation rate
2%
How often is UA1144 on time?
Across 48 flights on ORD → ONT from 2025-07-01 to 2025-08-18, UA1144 arrived within 15 minutes of schedule 47% of the time. The median arrival delay was +20 min, and the worst 10% of flights arrived +128 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 22 | 47% |
| 16-30 min | 5 | 11% |
| 31-60 min | 5 | 11% |
| 61-120 min | 9 | 19% |
| 2+ hrs | 6 | 13% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 29 | 48% | +40 min |
| 2025-08 | 18 | 44% | +44 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 6 | 33% |
| Tue | 7 | 43% |
| Wed | 7 | 57% |
| Thu | 7 | 43% |
| Fri | 6 | 33% |
| Sat | 7 | 57% |
| Sun | 7 | 57% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…