Flight profile · United Airlines
UA1877
Grand Junction (GJT) to Denver (DEN) · scheduled 7:00 AM – 8:22 AM
How UA1877 performs
843 operations, 2023-10-29 to 2026-06-30.
UA1877 arrived on time 86.3% of the time, against 78.4% for all GJT → DEN flights — this specific departure is 7.9 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 3.2 points better.
Source: US DOT Bureau of Transportation Statistics · 843 operations between 2023-10-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1877 | 86.3% | 0.36% | -13 min | 3.3% | 843 |
| United Airlines on GJT → DEN | 83.1% | 0.60% | -12 min | 5.1% | 2,005 |
| All GJT → DEN flights | 78.4% | 1.23% | -8 min | 8.4% | 5,590 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30
By day of week
Does UA1877 run worse on particular days?
Thursday is historically the most reliable day and Saturday the least, a gap of 9.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA1877 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→DTW Denver to Detroit | 2026-04-30 – 2026-05-20 | 21 | — |
| DEN→IAD Denver to Washington | 2026-03-29 – 2026-04-29 | 32 | — |
| DEN→IND Denver to Indianapolis | 2026-02-12 – 2026-03-04 | 21 | — |
| DEN→BIL Denver to Billings | 2025-11-01 – 2025-12-01 | 31 | — |
| DEN→EWR Denver to Newark | 2025-06-26 – 2025-08-18 | 54 | — |
| SNA→DEN Santa Ana to Denver | 2025-08-01 – 2025-08-18 | 15 | — |
| EWR→ATL Newark to Atlanta | 2025-06-26 – 2025-07-31 | 35 | — |
| DEN→MCO Denver to Orlando | 2024-10-27 – 2024-12-02 | 37 | — |
| DEN→SAV Denver to Savannah | 2024-03-31 – 2024-03-31 | 1 | — |
| IAD→MCO Washington to Orlando | 2023-09-29 – 2023-10-28 | 30 | — |
| IAH→DEN Houston to Denver | 2023-07-01 – 2023-09-28 | 90 | 93.3% |
Because the same number has served different journeys, the statistics above describe only the route UA1877 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 843 records of UA1877 operating GJT → 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.