Flight profile · United Airlines
UA1924
Denver (DEN) to Washington (IAD) · scheduled 11:59 PM – 5:22 AM
How UA1924 performs
437 operations, 2025-02-13 to 2026-06-30.
UA1924 arrived on time 91.5% of the time, against 78.9% for all DEN → IAD flights — this specific departure is 12.5 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 9.5 points better.
Source: US DOT Bureau of Transportation Statistics · 437 operations between 2025-02-13 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1924 | 91.5% | 0.92% | -15 min | 3.7% | 437 |
| United Airlines on DEN → IAD | 82.0% | 1.16% | -8 min | 6.7% | 7,579 |
| All DEN → IAD flights | 78.9% | 0.98% | -5 min | 6.9% | 9,987 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-02-13 to 2026-06-30
Other routes UA1924 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 |
|---|---|---|---|
| RSW→DEN Fort Myers to Denver | 2026-03-13 – 2026-03-28 | 8 | — |
| DFW→DEN Dallas–Fort Worth to Denver | 2025-10-26 – 2026-03-04 | 36 | — |
| SBA→DEN Santa Barbara to Denver | 2025-06-26 – 2025-10-24 | 63 | — |
| SAN→DEN San Diego to Denver | 2023-07-01 – 2025-05-21 | 462 | 87.2% |
| SFO→SAN San Francisco to San Diego | 2025-03-06 – 2025-03-29 | 24 | — |
| DEN→MIA Denver to Miami | 2024-11-30 – 2025-02-09 | 7 | — |
| ATL→SBN Atlanta to South Bend | 2025-01-21 – 2025-01-21 | 1 | — |
| SBN→ATL South Bend to Atlanta | 2025-01-19 – 2025-01-19 | 1 | — |
| MIA→EWR Miami to Newark | 2024-12-03 – 2024-12-18 | 16 | — |
| IAH→SFO Houston to San Francisco | 2024-08-19 – 2024-09-25 | 38 | — |
| DEN→RSW Denver to Fort Myers | 2024-03-31 – 2024-03-31 | 1 | — |
| DEN→EWR Denver to Newark | 2023-12-21 – 2024-01-08 | 15 | — |
| MAF→IAH Midland to Houston | 2024-01-01 – 2024-01-02 | 2 | — |
| PSP→ORD Palm Springs to Chicago | 2023-12-01 – 2023-12-20 | 20 | — |
| PHX→ORD Phoenix to Chicago | 2023-11-28 – 2023-11-30 | 3 | — |
| SYR→DEN Syracuse to Denver | 2023-10-29 – 2023-11-27 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1924 currently operates. Blending them would produce an average of two different flights.
Why UA1924 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for UA1924 on DEN → 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 DEN → IAD
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1101 | United Airlines | 91.1% | 12 min early | 880 |
| UA347 | United Airlines | 83.0% | 9 min early | 654 |
| UA2087 | United Airlines | 80.1% | 5 min early | 960 |
| UA798 | United Airlines | 79.1% | 6 min early | 946 |
| UA2408 | United Airlines | 69.8% | 1 min early | 921 |
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 437 records of UA1924 operating DEN → 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.
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