Flight Reliability
UA 5878 · United Airlines
SAF → Denver (SAF–DEN)
78
Usually Fine
WanderNerd Reliability Score
- 76%
- Arrive within 15 minutes
- 13 min
- Average arrival delay
- 0.3%
- Cancelled
- 8 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 5878 arrived on time 87% of the time on Saturdays and just 69% on Sundays. That gap is worth planning around.
A bit behind the United Airlines network.
UA 5878 arrived on time 76% of the time, versus 79% across the United Airlines network.
It basically never cancels.
Out of 364 scheduled flights, only 0.3% were cancelled.
Trending in the right direction.
UA 5878 arrived on time 76% of the time over the last three months in the data, compared with 68% in the three months before that.
The breakdown
- Mon71%(51 flights)
- Tue74%(50 flights)
- Wed79%(52 flights)
- Thu77%(51 flights)
- Fri73%(52 flights)
- Sat87%(52 flights)
- Sun69%(52 flights)
87%
May
Jun 60% → May 87% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 60% | 30 |
| July 2025 | 67% | 30 |
| August 2025 | 83% | 30 |
| September 2025 | 87% | 30 |
| October 2025 | 84% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 71% | 31 |
| January 2026 | 68% | 31 |
| February 2026 | 67% | 27 |
| March 2026 | 65% | 31 |
| April 2026 | 77% | 30 |
| May 2026 | 87% | 30 |
- Departures on time
- 76%
- Diverted
- 0.8%
- Flights flown
- 360
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 364 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.