Flight profile · United Airlines
UA2143
Newark (EWR) to San Juan (SJU) · scheduled 7:55 AM – 12:47 PM
How UA2143 performs
1,096 operations, 2023-07-01 to 2026-06-30.
UA2143 arrived on time 75.2% of the time, against 70.2% for all EWR → SJU flights — this specific departure is 5.0 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 3.3 points better.
Source: US DOT Bureau of Transportation Statistics · 1,096 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2143 | 75.2% | 2.10% | -7 min | 10.9% | 1,096 |
| United Airlines on EWR → SJU | 71.8% | 1.42% | -4 min | 10.2% | 3,304 |
| All EWR → SJU flights | 70.2% | 1.85% | -3 min | 11.9% | 6,654 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA2143 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 12.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 1,096 records of UA2143 operating EWR → SJU, 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.