Flight profile · United Airlines
UA1563
Houston (IAH) to Ontario (ONT) · scheduled 8:15 PM – 9:58 PM
How UA1563 performs
517 operations, 2024-12-19 to 2026-06-30.
UA1563 arrived on time 74.0% of the time, against 67.6% for all IAH → ONT flights — this specific departure is 6.4 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 2.4 points better.
Source: US DOT Bureau of Transportation Statistics · 517 operations between 2024-12-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1563 | 74.0% | 0.58% | -4 min | 10.7% | 517 |
| United Airlines on IAH → ONT | 71.6% | 0.52% | -1 min | 12.0% | 771 |
| All IAH → ONT flights | 67.6% | 1.12% | 1 min | 12.1% | 1,157 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-19 to 2026-06-30
Other routes UA1563 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 | 2026-04-30 – 2026-05-20 | 21 | — |
| TPA→IAH Tampa to Houston | 2026-03-29 – 2026-04-29 | 32 | — |
| PIT→IAH Pittsburgh to Houston | 2025-01-09 – 2025-12-17 | 85 | — |
| ORD→MSN Chicago to Madison | 2025-09-24 – 2025-09-24 | 1 | — |
| SEA→IAH Seattle to Houston | 2025-06-26 – 2025-07-31 | 36 | — |
| MIA→IAH Miami to Houston | 2025-05-22 – 2025-06-25 | 35 | — |
| MCO→EWR Orlando to Newark | 2024-10-27 – 2024-12-18 | 21 | — |
| EWR→SNA Newark to Santa Ana | 2024-10-27 – 2024-12-02 | 36 | — |
| ALB→ORD Albany to Chicago | 2024-09-26 – 2024-10-26 | 30 | — |
| LIH→SFO Lihue, Kauai to San Francisco | 2023-07-01 – 2024-09-25 | 453 | 92.9% |
| SFO→BOS San Francisco to Boston | 2024-08-19 – 2024-09-25 | 38 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1563 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 517 records of UA1563 operating IAH → 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.