Flight profile · United Airlines
UA1511
Newark (EWR) to Miami (MIA) · scheduled 1:00 PM – 4:16 PM
How UA1511 performs
370 operations, 2025-05-01 to 2026-06-30.
UA1511 arrived on time 69.3% of the time, against 75.8% for all EWR → MIA flights — this specific departure is 6.5 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 370 operations between 2025-05-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1511 | 69.3% | 2.70% | -1 min | 10.6% | 370 |
| United Airlines on EWR → MIA | 75.5% | 2.26% | -7 min | 8.9% | 6,684 |
| All EWR → MIA flights | 75.8% | 2.55% | -8 min | 9.4% | 12,508 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-05-01 to 2026-06-30
Other routes UA1511 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 |
|---|---|---|---|
| MIA→SFO Miami to San Francisco | 2026-03-29 – 2026-05-20 | 46 | — |
| TPA→EWR Tampa to Newark | 2026-03-29 – 2026-04-29 | 32 | — |
| SLC→EWR Salt Lake City to Newark | 2026-03-05 – 2026-03-28 | 24 | — |
| PHX→EWR Phoenix to Newark | 2026-02-12 – 2026-03-04 | 21 | — |
| IAH→ATL Houston to Atlanta | 2026-01-05 – 2026-01-05 | 1 | — |
| MIA→DEN Miami to Denver | 2025-06-26 – 2026-01-04 | 55 | — |
| DEN→HDN Denver to Hayden | 2025-09-25 – 2025-10-25 | 31 | — |
| LAS→DEN Las Vegas to Denver | 2025-10-02 – 2025-10-24 | 14 | — |
| IAH→EWR Houston to Newark | 2025-07-02 – 2025-07-31 | 6 | — |
| STL→EWR St. Louis to Newark | 2025-05-23 – 2025-06-25 | 34 | — |
| RDU→EWR Raleigh–Durham to Newark | 2023-10-03 – 2025-04-30 | 98 | 82.5% |
| IAH→SAN Houston to San Diego | 2025-01-07 – 2025-02-12 | 37 | — |
| EWR→MTJ Newark to Montrose | 2024-12-19 – 2025-01-06 | 18 | — |
| ATL→EWR Atlanta to Newark | 2024-02-15 – 2024-12-18 | 301 | 90.9% |
| IAD→SFO Washington to San Francisco | 2024-11-03 – 2024-12-01 | 5 | — |
| ORD→BUF Chicago to Buffalo | 2024-08-18 – 2024-08-18 | 1 | — |
| EWR→BOS Newark to Boston | 2024-06-27 – 2024-08-16 | 31 | — |
| EWR→DEN Newark to Denver | 2023-07-01 – 2024-02-14 | 154 | 84.0% |
| EWR→SNA Newark to Santa Ana | 2023-12-21 – 2024-01-08 | 19 | — |
| DEN→SNA Denver to Santa Ana | 2023-12-01 – 2023-12-20 | 17 | — |
| EWR→DFW Newark to Dallas–Fort Worth | 2023-10-02 – 2023-10-28 | 17 | — |
| ORD→SEA Chicago to Seattle | 2023-10-01 – 2023-10-22 | 5 | — |
| ORD→BZN Chicago to Bozeman | 2023-09-05 – 2023-09-28 | 24 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1511 currently operates. Blending them would produce an average of two different flights.
Why UA1511 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
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for UA1511 on EWR → MIA. 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 EWR → MIA
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| AA1196 | American Airlines | 93.2% | 17 min early | 1,092 |
| UA2295 | United Airlines | 76.9% | 10 min early | 1,039 |
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 370 records of UA1511 operating EWR → MIA, 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.