Flight profile · United Airlines
UA1510
Louisville (SDF) to Denver (DEN) · scheduled 3:25 PM – 4:28 PM
How UA1510 performs
404 operations, 2025-05-22 to 2026-06-30.
UA1510 arrived on time 76.4% of the time, against 83.3% for all SDF → DEN flights — this specific departure is 7.0 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 7.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 404 operations between 2025-05-22 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1510 | 76.4% | 1.24% | -9 min | 7.0% | 404 |
| United Airlines on SDF → DEN | 83.6% | 0.94% | -8 min | 6.3% | 2,126 |
| All SDF → DEN flights | 83.3% | 0.79% | -8 min | 6.0% | 3,273 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-05-22 to 2026-06-30
Other routes UA1510 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→PHL Denver to Philadelphia | 2026-04-30 – 2026-06-30 | 62 | — |
| TUS→DEN Tucson to Denver | 2025-03-06 – 2025-05-21 | 77 | — |
| DEN→BOS Denver to Boston | 2023-07-01 – 2025-04-30 | 583 | 71.3% |
| SJC→DEN San Jose to Denver | 2025-02-13 – 2025-03-05 | 21 | — |
| SAN→DEN San Diego to Denver | 2024-10-01 – 2025-01-06 | 45 | — |
| SFO→SAN San Francisco to San Diego | 2024-12-19 – 2025-01-06 | 19 | — |
| PHX→DEN Phoenix to Denver | 2024-12-03 – 2024-12-18 | 16 | — |
| MEM→DEN Memphis to Denver | 2024-10-27 – 2024-12-02 | 36 | — |
| DEN→FLL Denver to Fort Lauderdale | 2024-11-01 – 2024-12-02 | 29 | — |
| DEN→RSW Denver to Fort Myers | 2024-11-23 – 2024-11-30 | 2 | — |
| SNA→DEN Santa Ana to Denver | 2024-06-27 – 2024-08-18 | 53 | — |
| DEN→RAP Denver to Rapid City | 2024-07-01 – 2024-08-18 | 44 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1510 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 404 records of UA1510 operating SDF → 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.