Flight Reliability
UA 5554 · United Airlines
Denver → SUN (DEN–SUN)
91
Nerd Approved
WanderNerd Reliability Score
- 88%
- Arrive within 15 minutes
- 1 min early
- Average arrival delay
- 0%
- Cancelled
- 9 min early
- Median arrival delay
Based on 362 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 5554 arrived on time 94% of the time on Tuesdays. On Sundays: 83%.
A bit ahead of the DEN–SUN route.
UA 5554 arrived on time 88% of the time, versus 81% across the DEN–SUN route.
Better than the United Airlines network average.
UA 5554 arrived on time 88% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 362 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon90%(51 flights)
- Tue94%(51 flights)
- Wed86%(49 flights)
- Thu88%(50 flights)
- Fri87%(52 flights)
- Sat87%(52 flights)
- Sun83%(53 flights)
93%
May
Jun 83% → May 93% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 30 |
| July 2025 | 94% | 31 |
| August 2025 | 93% | 30 |
| September 2025 | 93% | 30 |
| October 2025 | 87% | 31 |
| November 2025 | 97% | 30 |
| December 2025 | 73% | 30 |
| January 2026 | 87% | 31 |
| February 2026 | 82% | 28 |
| March 2026 | 90% | 30 |
| April 2026 | 79% | 29 |
| May 2026 | 93% | 28 |
- Departures on time
- 89%
- Diverted
- 1.1%
- Flights flown
- 358
- 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.