About 1 in 4 UA 578 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (26%); 1.0% were cancelled. The typical flight landed 3 minutes early.
UA 578: DEN → DFW
Scheduled to leave Denver at 1:45 p.m. local time. Over the past year it arrived on time 74% of the time (291 flights), in line with other UA flights on the route at that hour (75%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 43 | 77% |
| Tuesday | 41 | 71% |
| Wednesday | 41 | 73% |
| Thursday | 39 | 74% |
| Friday | 42 | 71% |
| Saturday | 42 | 76% |
| Sunday | 43 | 74% |
Why it was late
All flights DEN → DFW · Connecting off UA 578? Check the risk
Questions
How often is UA 578 from DEN to DFW late?
United Airlines 578 from Denver, CO to Dallas/Fort Worth, TX arrived 15 or more minutes late, was diverted or was cancelled on 26% of 291 scheduled flights between September 2025 and August 2026. 1.0% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.