Flight profile · United Airlines
UA1181
Las Vegas (LAS) to Houston (IAH) · scheduled 8:00 AM – 1:04 PM
How UA1181 performs
415 operations, 2024-09-26 to 2026-06-30.
UA1181 arrived on time 90.1% of the time, against 82.5% for all LAS → IAH flights — this specific departure is 7.6 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 3.8 points better.
Source: US DOT Bureau of Transportation Statistics · 415 operations between 2024-09-26 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1181 | 90.1% | 1.45% | -13 min | 3.7% | 415 |
| United Airlines on LAS → IAH | 86.3% | 0.97% | -10 min | 4.8% | 7,343 |
| All LAS → IAH flights | 82.5% | 1.08% | -8 min | 5.8% | 11,648 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-09-26 to 2026-06-30
Other routes UA1181 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→PHL Houston to Philadelphia | 2026-05-21 – 2026-05-31 | 6 | — |
| DEN→FAI Denver to Fairbanks | 2026-05-20 – 2026-05-20 | 1 | — |
| IAH→IND Houston to Indianapolis | 2026-04-30 – 2026-05-19 | 20 | — |
| IAH→SFO Houston to San Francisco | 2026-01-06 – 2026-02-11 | 37 | — |
| IAH→DCA Houston to Washington | 2025-10-26 – 2026-01-05 | 55 | — |
| IAH→FLL Houston to Fort Lauderdale | 2025-09-25 – 2025-10-25 | 31 | — |
| DEN→ORD Denver to Chicago | 2025-08-19 – 2025-09-24 | 37 | — |
| IAH→AUS Houston to Austin | 2025-08-01 – 2025-08-18 | 14 | — |
| IAH→MSY Houston to New Orleans | 2025-06-02 – 2025-06-25 | 24 | — |
| IAH→DFW Houston to Dallas–Fort Worth | 2023-07-01 – 2025-05-21 | 346 | 69.5% |
| SFO→IAH San Francisco to Houston | 2025-03-30 – 2025-04-30 | 32 | — |
| MIA→IAH Miami to Houston | 2024-12-19 – 2025-01-06 | 19 | — |
| IAH→EWR Houston to Newark | 2024-08-19 – 2024-09-25 | 38 | — |
| ORD→AUS Chicago to Austin | 2024-06-27 – 2024-08-18 | 53 | — |
| ORD→CLT Chicago to Charlotte | 2024-05-23 – 2024-06-26 | 35 | — |
| SNA→IAH Santa Ana to Houston | 2024-03-31 – 2024-03-31 | 1 | — |
| PDX→IAH Portland to Houston | 2024-03-07 – 2024-03-30 | 24 | — |
| LGA→IAH New York to Houston | 2023-07-01 – 2024-03-06 | 162 | 87.7% |
| ORD→SMF Chicago to Sacramento | 2023-10-01 – 2023-10-22 | 4 | — |
| IAH→ABQ Houston to Albuquerque | 2023-10-05 – 2023-10-11 | 6 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1181 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 415 records of UA1181 operating LAS → 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.