Flight Reliability
UA 5506 · United Airlines
Denver → ACV (DEN–ACV)86% of its flights flew this route. The rest (IND–ORD, GSO–ORD) are included in these numbers.
85
Pretty Reliable
WanderNerd Reliability Score
- 82%
- Arrive within 15 minutes
- 7 min
- Average arrival delay
- 0.6%
- Cancelled
- 4 min early
- Median arrival delay
Based on 361 historical flights. Data through May 2026.
What the data says
Friday is doing you no favors.
UA 5506 arrived on time 88% of the time on Wednesdays. On Fridays: 77%.
A bit ahead of the United Airlines network.
UA 5506 arrived on time 82% of the time, versus 79% across the United Airlines network.
Recent months have been rougher.
UA 5506 arrived on time 69% of the time over the last three months in the data, compared with 79% in the three months before that.
The breakdown
- Mon80%(51 flights)
- Tue77%(52 flights)
- Wed88%(49 flights)
- Thu86%(50 flights)
- Fri77%(51 flights)
- Sat82%(51 flights)
- Sun85%(53 flights)
- 9 AM–12 PM83%(354 flights)
- 6–9 PM—(3 flights)
83%
May
Jun 87% → May 83% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 87% | 30 |
| July 2025 | 77% | 31 |
| August 2025 | 93% | 29 |
| September 2025 | 93% | 30 |
| October 2025 | 94% | 31 |
| November 2025 | 97% | 29 |
| December 2025 | 80% | 30 |
| January 2026 | 77% | 31 |
| February 2026 | 79% | 28 |
| March 2026 | 57% | 30 |
| April 2026 | 68% | 28 |
| May 2026 | 83% | 30 |
- Departures on time
- 84%
- Diverted
- 0.6%
- Flights flown
- 357
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 361 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.