Flight Reliability
UA 4797 · United Airlines
Denver → CPR (DEN–CPR)
86
Pretty Reliable
WanderNerd Reliability Score
- 85%
- Arrive within 15 minutes
- 3 min
- Average arrival delay
- 1.1%
- Cancelled
- 8 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
UA 4797 arrived on time 96% of the time on Mondays and just 78% on Fridays. That gap is worth planning around.
A bit ahead of the DEN–CPR route.
UA 4797 arrived on time 85% of the time, versus 78% across the DEN–CPR route.
A bit ahead of the United Airlines network.
UA 4797 arrived on time 85% of the time, versus 79% across the United Airlines network.
Ticking up lately.
UA 4797 arrived on time 86% of the time over the last three months in the data, compared with 80% in the three months before that.
The breakdown
- Mon96%(52 flights)
- Tue84%(50 flights)
- Wed87%(52 flights)
- Thu81%(52 flights)
- Fri78%(49 flights)
- Sat80%(51 flights)
- Sun87%(53 flights)
84%
May
Jun 70% → May 84% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 70% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 77% | 31 |
| September 2025 | 97% | 29 |
| October 2025 | 94% | 31 |
| November 2025 | 97% | 30 |
| December 2025 | 77% | 31 |
| January 2026 | 83% | 30 |
| February 2026 | 78% | 27 |
| March 2026 | 83% | 30 |
| April 2026 | 89% | 28 |
| May 2026 | 84% | 31 |
- Departures on time
- 84%
- Diverted
- 0.5%
- Flights flown
- 359
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.