Flight profile · United Airlines
UA1559
Santa Ana (SNA) to Newark (EWR) · scheduled 12:45 PM – 9:00 PM
How UA1559 performs
642 operations, 2024-08-19 to 2026-06-30.
UA1559 arrived on time 61.7% of the time, against 82.0% for all SNA → EWR flights — this specific departure is 20.3 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 20.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 642 operations between 2024-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1559 | 61.7% | 1.40% | 1 min | 23.2% | 642 |
| United Airlines on SNA → EWR | 82.0% | 1.74% | -11 min | 9.5% | 3,276 |
| All SNA → EWR flights | 82.0% | 1.74% | -11 min | 9.5% | 3,276 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-08-19 to 2026-06-30
Other routes UA1559 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→MTJ Denver to Montrose | 2025-06-01 – 2025-06-25 | 25 | — |
| EWR→SAT Newark to San Antonio | 2025-05-22 – 2025-05-31 | 10 | — |
| EWR→ORD Newark to Chicago | 2024-11-30 – 2024-12-01 | 2 | — |
| RAP→DEN Rapid City to Denver | 2024-03-31 – 2024-08-18 | 141 | 82.7% |
| EWR→TPA Newark to Tampa | 2024-03-07 – 2024-03-30 | 24 | — |
| HDN→EWR Hayden to Newark | 2023-12-21 – 2024-03-04 | 55 | — |
| LAX→DEN Los Angeles to Denver | 2023-11-28 – 2023-12-20 | 23 | — |
| SFO→AUS San Francisco to Austin | 2023-10-29 – 2023-11-27 | 30 | — |
| SMF→IAD Sacramento to Washington | 2023-09-29 – 2023-10-28 | 30 | — |
| IAD→CMH Washington to Columbus | 2023-10-01 – 2023-10-26 | 17 | — |
| ORD→RDU Chicago to Raleigh–Durham | 2023-09-05 – 2023-09-28 | 23 | — |
| MKE→DEN Milwaukee to Denver | 2023-09-10 – 2023-09-10 | 1 | — |
| SFO→MSY San Francisco to New Orleans | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1559 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 642 records of UA1559 operating SNA → EWR, 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.