Flight profile · United Airlines
UA655
Denver (DEN) to Las Vegas (LAS) · scheduled 7:25 PM – 8:37 PM
How UA655 performs
1,071 operations, 2023-07-01 to 2026-06-30.
UA655 arrived on time 71.6% of the time, against 74.5% for all DEN → LAS flights — this specific departure is 2.9 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 1,071 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA655 | 71.6% | 0.75% | -1 min | 11.8% | 1,071 |
| United Airlines on DEN → LAS | 77.6% | 0.61% | -6 min | 8.7% | 7,592 |
| All DEN → LAS flights | 74.5% | 0.87% | -4 min | 8.7% | 23,811 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA655 run worse on particular days?
Wednesday is historically the most reliable day and Thursday the least, a gap of 16.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA655 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 |
|---|---|---|---|
| LAS→EWR Las Vegas to Newark | 2024-06-27 – 2026-06-28 | 97 | 81.7% |
| SEA→DEN Seattle to Denver | 2026-05-21 – 2026-06-24 | 30 | — |
| LAS→ORD Las Vegas to Chicago | 2026-06-01 – 2026-06-23 | 23 | — |
| DEN→MRY Denver to Monterey | 2026-05-20 – 2026-05-20 | 1 | — |
| LAS→SFO Las Vegas to San Francisco | 2025-05-22 – 2025-06-25 | 24 | — |
| BOS→DEN Boston to Denver | 2025-05-22 – 2025-06-23 | 19 | — |
| LAS→IAD Las Vegas to Washington | 2025-05-01 – 2025-05-21 | 21 | — |
| MSN→DEN Madison to Denver | 2024-10-27 – 2024-12-02 | 36 | — |
| EWR→PHX Newark to Phoenix | 2024-05-02 – 2024-05-22 | 21 | — |
| SAV→DEN Savannah to Denver | 2023-07-01 – 2023-07-31 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route UA655 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,071 records of UA655 operating DEN → 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.