Flight profile · United Airlines
UA1971
Houston (IAH) to Las Vegas (LAS) · scheduled 2:20 PM – 3:37 PM
How UA1971 performs
458 operations, 2025-03-30 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 458 operations between 2025-03-30 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1971 | 80.7% | 0.00% | -11 min | 8.8% | 458 |
| United Airlines on IAH → LAS | 81.4% | 0.82% | -7 min | 6.9% | 7,343 |
| All IAH → LAS flights | 79.9% | 1.01% | -7 min | 7.6% | 11,636 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-03-30 to 2026-06-30
Other routes UA1971 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 |
|---|---|---|---|
| TPA→IAH Tampa to Houston | 2026-05-01 – 2026-05-20 | 20 | — |
| LAS→ORD Las Vegas to Chicago | 2026-03-29 – 2026-04-29 | 32 | — |
| PHL→ORD Philadelphia to Chicago | 2025-05-22 – 2025-06-25 | 35 | — |
| ORD→IAH Chicago to Houston | 2025-05-22 – 2025-06-25 | 35 | — |
| PIT→SFO Pittsburgh to San Francisco | 2024-05-23 – 2025-03-29 | 53 | — |
| SFO→MCO San Francisco to Orlando | 2025-02-13 – 2025-03-28 | 35 | — |
| MCO→LAX Orlando to Los Angeles | 2025-01-07 – 2025-02-12 | 37 | — |
| SFO→SEA San Francisco to Seattle | 2023-07-01 – 2025-01-06 | 420 | 75.9% |
| LAX→SFO Los Angeles to San Francisco | 2024-12-19 – 2025-01-06 | 19 | — |
| LAS→IAH Las Vegas to Houston | 2024-09-26 – 2024-10-26 | 31 | — |
| IAH→ORD Houston to Chicago | 2024-10-01 – 2024-10-26 | 26 | — |
| BUR→SFO Burbank to San Francisco | 2024-08-19 – 2024-08-31 | 13 | — |
| EWR→SDF Newark to Louisville | 2024-05-04 – 2024-05-04 | 1 | — |
| MIA→SFO Miami to San Francisco | 2023-10-29 – 2024-05-01 | 162 | 42.0% |
| ATL→ORD Atlanta to Chicago | 2023-09-29 – 2023-10-27 | 13 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1971 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 458 records of UA1971 operating IAH → LAS, 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.