Flight profile · United Airlines
UA1187
West Palm Beach (PBI) to Newark (EWR) · scheduled 7:30 PM – 10:30 PM
How UA1187 performs
120 operations, 2026-02-12 to 2026-06-30.
UA1187 arrived on time 70.1% of the time, against 74.4% for all PBI → EWR flights — this specific departure is 4.3 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 120 operations between 2026-02-12 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1187 | 70.1% | 2.50% | -7 min | 15.4% | 120 |
| United Airlines on PBI → EWR | 76.5% | 2.69% | -10 min | 11.4% | 8,065 |
| All PBI → EWR flights | 74.4% | 2.75% | -8 min | 12.5% | 10,315 |
Source: FlyerIntel analysis of US DOT BTS data · 2026-02-12 to 2026-06-30
Other routes UA1187 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 |
|---|---|---|---|
| ORD→PBI Chicago to West Palm Beach | 2025-09-25 – 2026-02-11 | 140 | 75.0% |
| EWR→SEA Newark to Seattle | 2025-08-19 – 2025-09-24 | 37 | — |
| IAD→SLC Washington to Salt Lake City | 2025-08-18 – 2025-08-18 | 1 | — |
| DEN→AUS Denver to Austin | 2025-05-22 – 2025-06-25 | 35 | — |
| BOS→SFO Boston to San Francisco | 2023-07-01 – 2025-05-21 | 604 | 81.0% |
| SFO→PHX San Francisco to Phoenix | 2023-09-29 – 2025-03-29 | 432 | 83.5% |
| SFO→LAS San Francisco to Las Vegas | 2025-02-13 – 2025-03-05 | 21 | — |
| EWR→BOS Newark to Boston | 2024-03-31 – 2024-05-01 | 28 | — |
| PHX→CLE Phoenix to Cleveland | 2024-03-07 – 2024-03-30 | 24 | — |
| SBA→SFO Santa Barbara to San Francisco | 2024-01-09 – 2024-02-14 | 37 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1187 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
78 min late
against a median of 7 min early
UA1187 is a flight whose average understates its risk: a typical day arrives 7 min early, but the worst tenth of days are 85 minutes worse than that. If the day has something unmissable in it, the median is the wrong number to plan against.
Percentiles over 120 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why UA1187 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 UA1187 on PBI → EWR. 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 PBI → EWR
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| B6144 | JetBlue | 75.4% | 5 min early | 862 |
| UA2300 | United Airlines | 71.4% | 13 min early | 770 |
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 120 records of UA1187 operating PBI → 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.
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