Flight profile · United Airlines
UA2391
Denver (DEN) to San Francisco (SFO) · scheduled 7:45 AM – 9:36 AM
How UA2391 performs
496 operations, 2024-10-27 to 2026-06-30.
UA2391 arrived on time 74.9% of the time, against 68.5% for all DEN → SFO flights — this specific departure is 6.4 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 496 operations between 2024-10-27 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2391 | 74.9% | 0.40% | -2 min | 5.1% | 496 |
| United Airlines on DEN → SFO | 74.0% | 0.72% | -4 min | 9.4% | 10,066 |
| All DEN → SFO flights | 68.5% | 0.70% | -1 min | 11.2% | 16,595 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-10-27 to 2026-06-30
Other routes UA2391 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 |
|---|---|---|---|
| SFO→SAN San Francisco to San Diego | 2025-05-01 – 2026-03-04 | 155 | 81.2% |
| MCI→DEN Kansas City to Denver | 2023-07-01 – 2025-09-24 | 720 | 94.1% |
| SFO→SEA San Francisco to Seattle | 2024-12-03 – 2024-12-18 | 16 | — |
| DEN→AVL Denver to Asheville | 2024-06-27 – 2024-08-18 | 53 | — |
| IAD→IAH Washington to Houston | 2024-05-23 – 2024-05-23 | 1 | — |
| SAV→IAH Savannah to Houston | 2024-03-31 – 2024-03-31 | 1 | — |
| DEN→BNA Denver to Nashville | 2023-12-02 – 2023-12-09 | 2 | — |
| DEN→ATL Denver to Atlanta | 2023-10-29 – 2023-10-30 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2391 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 496 records of UA2391 operating DEN → SFO, 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.