Flight profile · United Airlines
UA800
Boston (BOS) to Denver (DEN) · scheduled 4:50 PM – 7:40 PM
How UA800 performs
514 operations, 2024-08-19 to 2026-06-30.
UA800 arrived on time 77.3% of the time, against 78.3% for all BOS → DEN flights — this specific departure is 1.1 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.1 points worse.
Source: US DOT Bureau of Transportation Statistics · 514 operations between 2024-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA800 | 77.3% | 0.78% | -4 min | 7.6% | 514 |
| United Airlines on BOS → DEN | 83.4% | 1.33% | -10 min | 5.1% | 5,775 |
| All BOS → DEN flights | 78.3% | 1.10% | -7 min | 7.0% | 11,438 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-08-19 to 2026-06-30
Other routes UA800 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 |
|---|---|---|---|
| DEN→TPA Denver to Tampa | 2025-12-24 – 2025-12-31 | 2 | — |
| IAH→BOS Houston to Boston | 2025-05-22 – 2025-10-25 | 103 | 69.6% |
| OMA→IAH Omaha to Houston | 2025-09-02 – 2025-09-24 | 23 | — |
| DEN→SFO Denver to San Francisco | 2025-03-06 – 2025-03-29 | 21 | — |
| MCO→EWR Orlando to Newark | 2025-03-15 – 2025-03-22 | 2 | — |
| MSY→EWR New Orleans to Newark | 2025-02-10 – 2025-02-10 | 1 | — |
| DEN→RNO Denver to Reno | 2025-01-12 – 2025-02-09 | 5 | — |
| EWR→BOS Newark to Boston | 2024-12-03 – 2024-12-18 | 14 | — |
| EWR→MCO Newark to Orlando | 2023-07-01 – 2024-08-18 | 415 | 91.2% |
| MCO→DEN Orlando to Denver | 2024-06-27 – 2024-08-18 | 46 | — |
Because the same number has served different journeys, the statistics above describe only the route UA800 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 514 records of UA800 operating BOS → DEN, 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.