Flight profile · United Airlines
UA578
Denver (DEN) to Dallas–Fort Worth (DFW) · scheduled 1:26 PM – 4:27 PM
How UA578 performs
793 operations, 2023-09-29 to 2026-06-30.
UA578 arrived on time 80.6% of the time, against 74.7% for all DEN → DFW flights — this specific departure is 6.0 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 2.6 points better.
Source: US DOT Bureau of Transportation Statistics · 793 operations between 2023-09-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA578 | 80.6% | 1.01% | -6 min | 8.3% | 793 |
| United Airlines on DEN → DFW | 78.0% | 0.77% | -5 min | 8.6% | 5,584 |
| All DEN → DFW flights | 74.7% | 1.84% | -5 min | 9.9% | 18,322 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-29 to 2026-06-30
Other routes UA578 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 |
|---|---|---|---|
| DEN→PSP Denver to Palm Springs | 2026-04-09 – 2026-04-23 | 3 | — |
| SYR→DEN Syracuse to Denver | 2026-03-29 – 2026-03-29 | 1 | — |
| LGA→DEN New York to Denver | 2026-02-12 – 2026-03-04 | 15 | — |
| LAX→DEN Los Angeles to Denver | 2025-03-06 – 2026-01-05 | 203 | 87.7% |
| DTW→SFO Detroit to San Francisco | 2025-12-02 – 2025-12-17 | 16 | — |
| STL→DEN St. Louis to Denver | 2024-12-19 – 2025-01-06 | 19 | — |
| FLL→DEN Fort Lauderdale to Denver | 2024-12-03 – 2024-12-18 | 16 | — |
| SEA→DEN Seattle to Denver | 2023-09-29 – 2024-08-18 | 302 | 89.1% |
| DFW→ORD Dallas–Fort Worth to Chicago | 2024-05-23 – 2024-08-18 | 68 | — |
| SAV→ORD Savannah to Chicago | 2024-01-09 – 2024-01-09 | 1 | — |
| DEN→MSY Denver to New Orleans | 2023-12-21 – 2024-01-08 | 18 | — |
| EWR→MYR Newark to Myrtle Beach | 2023-09-05 – 2023-09-28 | 24 | — |
| DEN→SFO Denver to San Francisco | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA578 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.
49 min late
against a median of 6 min early
Percentiles over 793 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why UA578 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 UA578 on DEN → DFW. 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 → DFW
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| AA2612 | American Airlines | 88.6% | 14 min early | 876 |
| UA1350 | United Airlines | 82.7% | 7 min early | 1,046 |
| AA1523 | American Airlines | 81.9% | 10 min early | 627 |
| AA2357 | American Airlines | 81.0% | 12 min early | 733 |
| AA852 | American Airlines | 75.5% | 9 min early | 678 |
| AA420 | American Airlines | 69.2% | 1 min late | 1,051 |
| UA1565 | United Airlines | 67.7% | 0 min early | 624 |
| F92632 | Frontier Airlines | 63.0% | 0 min early | 674 |
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 793 records of UA578 operating DEN → DFW, 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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