About 1 in 6 UA 4663 flights from Denver arrived 15+ minutes late, diverted or cancelled over the past year (16%); 0.5% were cancelled. The typical flight landed 10 minutes early.
UA 4663: DEN → BIS
Scheduled to leave Denver at 10:05 a.m. local time, operated by SkyWest as OO 4663. Over the past year it arrived on time 84% of the time (363 flights), in line with other UA flights on the route at that hour (84%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 77% |
| Tuesday | 52 | 90% |
| Wednesday | 51 | 88% |
| Thursday | 51 | 82% |
| Friday | 52 | 88% |
| Saturday | 52 | 83% |
| Sunday | 52 | 79% |
Why it was late
All flights DEN → BIS · Connecting off UA 4663? Check the risk
Questions
How often is UA 4663 from DEN to BIS late?
United Airlines 4663 from Denver, CO to Bismarck/Mandan, ND arrived 15 or more minutes late, was diverted or was cancelled on 16% of 363 scheduled flights between September 2025 and August 2026. 0.5% 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.