Flight profile · United Airlines
UA1873
Phoenix (PHX) to Washington (IAD) · scheduled 9:00 AM – 4:17 PM
How UA1873 performs
316 operations, 2025-08-19 to 2026-06-30.
UA1873 arrived on time 92.4% of the time, against 85.8% for all PHX → IAD flights — this specific departure is 6.6 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 4.9 points better.
Source: US DOT Bureau of Transportation Statistics · 316 operations between 2025-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1873 | 92.4% | 0.32% | -12 min | 2.2% | 316 |
| United Airlines on PHX → IAD | 87.5% | 1.04% | -9 min | 3.8% | 2,304 |
| All PHX → IAD flights | 85.8% | 0.81% | -7 min | 3.6% | 3,071 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-08-19 to 2026-06-30
Other routes UA1873 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→DTW Washington to Detroit | 2026-04-01 – 2026-04-27 | 18 | — |
| IAD→CLE Washington to Cleveland | 2026-03-05 – 2026-03-28 | 24 | — |
| SEA→IAD Seattle to Washington | 2025-06-26 – 2025-08-18 | 54 | — |
| DFW→EWR Dallas–Fort Worth to Newark | 2025-05-31 – 2025-06-25 | 13 | — |
| IAD→BNA Washington to Nashville | 2023-07-01 – 2025-05-21 | 422 | 69.0% |
| BNA→EWR Nashville to Newark | 2025-03-06 – 2025-03-29 | 24 | — |
| SAN→IAD San Diego to Washington | 2023-07-01 – 2025-03-05 | 500 | 80.5% |
| SFO→SAN San Francisco to San Diego | 2024-09-26 – 2024-10-26 | 31 | — |
| IAH→SFO Houston to San Francisco | 2024-08-18 – 2024-08-18 | 1 | — |
| EWR→CMH Newark to Columbus | 2024-05-23 – 2024-05-23 | 1 | — |
| DEN→GEG Denver to Spokane | 2023-11-26 – 2023-11-26 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1873 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 316 records of UA1873 operating PHX → 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.