Flight profile · United Airlines
UA1579
Denver (DEN) to New York (LGA) · scheduled 2:10 PM – 7:53 PM
How UA1579 performs
312 operations, 2025-08-19 to 2026-06-30.
UA1579 arrived on time 72.7% of the time, against 74.5% for all DEN → LGA flights — this specific departure is 1.8 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 3.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 312 operations between 2025-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1579 | 72.7% | 1.92% | -4 min | 15.1% | 312 |
| United Airlines on DEN → LGA | 76.0% | 1.25% | -5 min | 9.1% | 6,092 |
| All DEN → LGA flights | 74.5% | 1.72% | -4 min | 9.4% | 14,213 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-08-19 to 2026-06-30
Other routes UA1579 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 |
|---|---|---|---|
| MCI→DEN Kansas City to Denver | 2026-04-30 – 2026-05-20 | 18 | — |
| LGA→ORD New York to Chicago | 2025-10-26 – 2025-12-01 | 31 | — |
| ORD→SAV Chicago to Savannah | 2025-10-25 – 2025-10-25 | 1 | — |
| SFO→DEN San Francisco to Denver | 2025-09-25 – 2025-10-24 | 30 | — |
| CLT→EWR Charlotte to Newark | 2025-06-26 – 2025-08-18 | 45 | — |
| EWR→CLE Newark to Cleveland | 2025-03-30 – 2025-06-25 | 88 | — |
| JAX→EWR Jacksonville to Newark | 2025-05-22 – 2025-06-25 | 30 | — |
| ORD→PHX Chicago to Phoenix | 2025-03-06 – 2025-03-29 | 24 | — |
| PHX→EWR Phoenix to Newark | 2025-03-06 – 2025-03-29 | 24 | — |
| DEN→BZN Denver to Bozeman | 2024-12-19 – 2025-03-05 | 72 | — |
| EWR→ORD Newark to Chicago | 2024-12-03 – 2024-12-18 | 16 | — |
| EWR→SFO Newark to San Francisco | 2024-10-27 – 2024-12-02 | 36 | — |
| MCO→EWR Orlando to Newark | 2024-10-27 – 2024-12-02 | 36 | — |
| DEN→JAC Denver to Jackson | 2024-08-19 – 2024-09-25 | 38 | — |
| PBI→ORD West Palm Beach to Chicago | 2024-03-07 – 2024-03-30 | 24 | — |
| JAX→ORD Jacksonville to Chicago | 2024-02-15 – 2024-03-04 | 15 | — |
| ORD→GRR Chicago to Grand Rapids | 2024-01-09 – 2024-02-14 | 36 | — |
| FLL→EWR Fort Lauderdale to Newark | 2023-12-21 – 2024-01-08 | 19 | — |
| SLC→ORD Salt Lake City to Chicago | 2023-12-14 – 2023-12-20 | 7 | — |
| CLT→ORD Charlotte to Chicago | 2023-10-29 – 2023-12-13 | 45 | — |
| ORD→MDT Chicago to Harrisburg | 2023-10-29 – 2023-11-27 | 29 | — |
| IAH→SAN Houston to San Diego | 2023-09-05 – 2023-09-28 | 24 | — |
| ORD→PHL Chicago to Philadelphia | 2023-09-05 – 2023-09-28 | 24 | — |
| SAN→ORD San Diego to Chicago | 2023-09-05 – 2023-09-28 | 24 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1579 currently operates. Blending them would produce an average of two different flights.
Why UA1579 runs late
Where US DOT attributed the delay minutes on this flight.
airspace and airport capacity, including weather-driven flow control
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1579 on DEN → LGA. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on DEN → LGA
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1442 | United Airlines | 89.0% | 13 min early | 731 |
| DL398 | Delta Air Lines | 86.5% | 12 min early | 758 |
| DL716 | Delta Air Lines | 65.8% | 0 min early | 631 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 312 records of UA1579 operating DEN → LGA, 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.