Flight Reliability
UA 5602 · United Airlines
GUC → Denver (GUC–DEN)97% of its flights flew this route. The rest (LAX–PHX, CHA–ORD) are included in these numbers.
82
Pretty Reliable
WanderNerd Reliability Score
- 81%
- Arrive within 15 minutes
- 8 min
- Average arrival delay
- 1.8%
- Cancelled
- 8 min early
- Median arrival delay
Based on 337 historical flights. Data through May 2026.
What the data says
Saturday is the weak spot.
UA 5602 arrived on time 85% of the time on Fridays. On Saturdays: 78%.
Ticking up lately.
UA 5602 arrived on time 96% of the time over the last three months in the data, compared with 90% in the three months before that.
The breakdown
- Mon78%(45 flights)
- Tue82%(50 flights)
- Wed80%(50 flights)
- Thu81%(47 flights)
- Fri85%(48 flights)
- Sat78%(45 flights)
- Sun80%(46 flights)
- 6–9 AM81%(325 flights)
- 12–3 PM—(6 flights)
94%
May
Jun 50% → May 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 50% | 30 |
| July 2025 | 47% | 30 |
| August 2025 | 65% | 31 |
| September 2025 | 90% | 30 |
| October 2025 | 86% | 28 |
| December 2025 | 83% | 30 |
| January 2026 | 100% | 30 |
| February 2026 | 86% | 28 |
| March 2026 | 97% | 29 |
| April 2026 | 97% | 30 |
| May 2026 | 94% | 31 |
- Departures on time
- 82%
- Diverted
- 0%
- Flights flown
- 331
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 337 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.