Flight profile · United Airlines
UA430
Denver (DEN) to Ontario (ONT) · scheduled 11:15 AM – 12:32 PM
How UA430 performs
1,030 operations, 2023-07-01 to 2026-06-30.
UA430 arrived on time 85.3% of the time, against 74.5% for all DEN → ONT flights — this specific departure is 10.8 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 7.7 points better.
Source: US DOT Bureau of Transportation Statistics · 1,030 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA430 | 85.3% | 0.29% | -9 min | 5.0% | 1,030 |
| United Airlines on DEN → ONT | 77.6% | 0.32% | -5 min | 8.4% | 2,534 |
| All DEN → ONT flights | 74.5% | 0.62% | -3 min | 7.9% | 8,448 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA430 run worse on particular days?
Wednesday is historically the most reliable day and Thursday the least, a gap of 8.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA430 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| JAX→IAH Jacksonville to Houston | 2026-02-04 – 2026-02-04 | 1 | — |
| RSW→DEN Fort Myers to Denver | 2025-05-22 – 2025-05-25 | 2 | — |
| OMA→DEN Omaha to Denver | 2025-03-06 – 2025-03-29 | 24 | — |
| TUL→DEN Tulsa to Denver | 2024-09-26 – 2024-10-26 | 31 | — |
| XNA→DEN Fayetteville/Springdale/Rogers to Denver | 2024-05-24 – 2024-07-31 | 57 | — |
| CVG→EWR Cincinnati / Covington to Newark | 2024-05-23 – 2024-05-23 | 1 | — |
| PHL→DEN Philadelphia to Denver | 2023-09-29 – 2023-10-28 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route UA430 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,030 records of UA430 operating DEN → ONT, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.