Flight profile · United Airlines
UA1366
Newark (EWR) to Washington (IAD) · scheduled 6:00 AM – 7:20 AM
How UA1366 performs
502 operations, 2025-01-07 to 2026-06-30.
UA1366 arrived on time 95.3% of the time, against 74.2% for all EWR → IAD flights — this specific departure is 21.1 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 21.7 points better.
Source: US DOT Bureau of Transportation Statistics · 502 operations between 2025-01-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1366 | 95.3% | 1.79% | -10 min | 2.2% | 502 |
| United Airlines on EWR → IAD | 73.6% | 1.88% | -4 min | 11.1% | 3,994 |
| All EWR → IAD flights | 74.2% | 2.16% | -4 min | 10.9% | 4,451 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-01-07 to 2026-06-30
Other routes UA1366 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 |
|---|---|---|---|
| IAD→BNA Washington to Nashville | 2026-02-12 – 2026-06-29 | 117 | 88.9% |
| BNA→IAH Nashville to Houston | 2026-05-25 – 2026-06-29 | 33 | — |
| IAD→SEA Washington to Seattle | 2025-03-30 – 2026-01-05 | 61 | — |
| IAD→LAX Washington to Los Angeles | 2025-10-26 – 2025-12-01 | 37 | — |
| IAD→BZN Washington to Bozeman | 2025-08-23 – 2025-08-31 | 4 | — |
| IAD→DEN Washington to Denver | 2023-07-01 – 2025-03-05 | 487 | 86.7% |
| ORF→IAD Norfolk to Washington | 2023-07-01 – 2024-08-18 | 179 | 88.0% |
| ORD→DFW Chicago to Dallas–Fort Worth | 2023-11-24 – 2023-11-24 | 1 | — |
| DEN→GEG Denver to Spokane | 2023-07-05 – 2023-10-28 | 90 | 76.7% |
| LAX→IAH Los Angeles to Houston | 2023-09-05 – 2023-09-28 | 24 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1366 currently operates. Blending them would produce an average of two different flights.
Why UA1366 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
the inbound aircraft was late, so this flight started late
Share of the delay minutes US DOT attributed to each cause for UA1366 on EWR → IAD. 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 → IAD
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1992 | United Airlines | 64.2% | 6 min late | 805 |
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 502 records of UA1366 operating EWR → IAD, 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.