About 1 in 8 UA 4800 flights from Grand Junction arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.0% were cancelled. The typical flight landed 20 minutes early.
UA 4800: GJT → DEN
Scheduled to leave Grand Junction at 5:30 a.m. local time, operated by SkyWest as OO 4800. Over the past year it arrived on time 87% of the time (318 flights), in line with other UA flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 50 | 90% |
| Tuesday | 44 | 93% |
| Wednesday | 44 | 86% |
| Thursday | 49 | 86% |
| Friday | 48 | 90% |
| Saturday | 34 | 88% |
| Sunday | 49 | 80% |
Why it was late
All flights GJT → DEN · Connecting off UA 4800? Check the risk
Questions
How often is UA 4800 from GJT to DEN late?
United Airlines 4800 from Grand Junction, CO to Denver, CO arrived 15 or more minutes late, was diverted or was cancelled on 13% of 318 scheduled flights between September 2025 and August 2026. 0.0% 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.