Flight profile · United Airlines
UA1524
Washington (IAD) to Houston (IAH) · scheduled 8:30 AM – 11:00 AM
How UA1524 performs
575 operations, 2024-09-26 to 2026-06-30.
UA1524 arrived on time 87.4% of the time, against 81.0% for all IAD → IAH flights — this specific departure is 6.3 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 6.3 points better.
Source: US DOT Bureau of Transportation Statistics · 575 operations between 2024-09-26 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1524 | 87.4% | 0.87% | -10 min | 3.7% | 575 |
| United Airlines on IAD → IAH | 81.0% | 0.84% | -7 min | 6.0% | 5,349 |
| All IAD → IAH flights | 81.0% | 0.84% | -7 min | 6.0% | 5,349 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-09-26 to 2026-06-30
Other routes UA1524 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 |
|---|---|---|---|
| IAH→LAS Houston to Las Vegas | 2025-09-25 – 2026-06-30 | 189 | 88.4% |
| ORF→IAD Norfolk to Washington | 2025-12-19 – 2026-06-30 | 80 | — |
| CHS→IAD Charleston to Washington | 2026-04-01 – 2026-04-29 | 13 | — |
| IAH→SAT Houston to San Antonio | 2024-06-27 – 2024-12-02 | 108 | 72.9% |
| CLT→ORD Charlotte to Chicago | 2024-11-30 – 2024-12-01 | 2 | — |
| ORD→LAX Chicago to Los Angeles | 2024-11-30 – 2024-12-01 | 2 | — |
| ANC→ORD Anchorage to Chicago | 2024-11-24 – 2024-11-24 | 1 | — |
| DFW→IAH Dallas–Fort Worth to Houston | 2023-11-28 – 2024-06-26 | 116 | 81.6% |
| RSW→ORD Fort Myers to Chicago | 2024-01-09 – 2024-05-22 | 54 | — |
| IAH→PHL Houston to Philadelphia | 2024-03-07 – 2024-03-30 | 24 | — |
| DEN→FCA Denver to Kalispell | 2024-01-14 – 2024-01-14 | 1 | — |
| IAH→MSY Houston to New Orleans | 2023-12-22 – 2024-01-08 | 15 | — |
| DSM→IAH Des Moines to Houston | 2023-12-21 – 2023-12-21 | 1 | — |
| ORD→BOS Chicago to Boston | 2023-12-03 – 2023-12-17 | 3 | — |
| IAH→CHS Houston to Charleston | 2023-07-01 – 2023-11-27 | 138 | 81.2% |
| AUS→EWR Austin to Newark | 2023-10-20 – 2023-10-23 | 2 | — |
| MAF→IAH Midland to Houston | 2023-10-13 – 2023-10-15 | 2 | — |
| EWR→IAD Newark to Washington | 2023-09-30 – 2023-09-30 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1524 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 575 records of UA1524 operating IAD → IAH, 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.