Flight profile · United Airlines
UA2157
Houston (IAH) to Salt Lake City (SLC) · scheduled 8:05 PM – 10:43 PM
How UA2157 performs
314 operations, 2025-08-19 to 2026-06-30.
UA2157 arrived on time 79.1% of the time, against 81.7% for all IAH → SLC flights — this specific departure is 2.6 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 1.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 314 operations between 2025-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2157 | 79.1% | 0.96% | -1 min | 8.7% | 314 |
| United Airlines on IAH → SLC | 80.1% | 1.15% | -5 min | 7.3% | 2,531 |
| All IAH → SLC flights | 81.7% | 0.78% | -8 min | 7.3% | 5,909 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-08-19 to 2026-06-30
Other routes UA2157 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 |
|---|---|---|---|
| SAT→IAH San Antonio to Houston | 2024-09-26 – 2026-01-05 | 293 | 72.6% |
| IAH→LAS Houston to Las Vegas | 2025-02-13 – 2025-05-21 | 98 | 75.3% |
| IAH→IAD Houston to Washington | 2025-01-07 – 2025-02-12 | 37 | — |
| IAH→DTW Houston to Detroit | 2024-12-19 – 2025-01-06 | 19 | — |
| CMH→ORD Columbus to Chicago | 2024-11-30 – 2024-12-01 | 2 | — |
| ORD→RDU Chicago to Raleigh–Durham | 2024-11-30 – 2024-12-01 | 2 | — |
| IAH→MCI Houston to Kansas City | 2024-08-19 – 2024-09-25 | 38 | — |
| DCA→IAH Washington to Houston | 2024-03-07 – 2024-05-22 | 63 | — |
| ORD→DCA Chicago to Washington | 2024-05-02 – 2024-05-22 | 18 | — |
| LAS→ORD Las Vegas to Chicago | 2024-02-15 – 2024-03-06 | 21 | — |
| PHX→ORD Phoenix to Chicago | 2023-09-05 – 2024-02-14 | 152 | 86.6% |
| ORD→RIC Chicago to Richmond | 2023-11-26 – 2023-11-26 | 1 | — |
| ORD→IAH Chicago to Houston | 2023-11-03 – 2023-11-03 | 1 | — |
| OMA→IAH Omaha to Houston | 2023-10-30 – 2023-10-31 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2157 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 314 records of UA2157 operating IAH → SLC, 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.