Flight Reliability
UA 5818 · United Airlines
CPR → Denver (CPR–DEN)
91
Nerd Approved
WanderNerd Reliability Score
- 86%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0.6%
- Cancelled
- 17 min early
- Median arrival delay
Based on 362 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
UA 5818 arrived on time 94% of the time on Tuesdays and just 77% on Fridays. That gap is worth planning around.
A bit ahead of the CPR–DEN route.
UA 5818 arrived on time 86% of the time, versus 81% across the CPR–DEN route.
A bit ahead of the United Airlines network.
UA 5818 arrived on time 86% of the time, versus 79% across the United Airlines network.
The breakdown
- Mon87%(52 flights)
- Tue94%(52 flights)
- Wed90%(52 flights)
- Thu86%(50 flights)
- Fri77%(51 flights)
- Sat78%(51 flights)
- Sun87%(52 flights)
94%
May
Jun 73% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 73% | 30 |
| July 2025 | 77% | 30 |
| August 2025 | 65% | 31 |
| September 2025 | 79% | 29 |
| October 2025 | 84% | 31 |
| November 2025 | 90% | 30 |
| December 2025 | 90% | 30 |
| January 2026 | 97% | 31 |
| February 2026 | 96% | 28 |
| March 2026 | 93% | 30 |
| April 2026 | 90% | 29 |
| May 2026 | 94% | 31 |
- Departures on time
- 89%
- Diverted
- 0%
- Flights flown
- 360
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 362 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.