Flight Reliability
UA 4708 · United Airlines
San Francisco → ACV (SFO–ACV)
72
Usually Fine
WanderNerd Reliability Score
- 78%
- Arrive within 15 minutes
- 9 min
- Average arrival delay
- 0.5%
- Cancelled
- 5 min early
- Median arrival delay
Based on 365 historical flights. Data through May 2026.
What the data says
Sunday scaries are real for this one.
UA 4708 arrived on time 84% of the time on Fridays. On Sundays: 70%.
Trending in the right direction.
UA 4708 arrived on time 79% of the time over the last three months in the data, compared with 68% in the three months before that.
The breakdown
- Mon72%(50 flights)
- Tue80%(50 flights)
- Wed78%(51 flights)
- Thu84%(50 flights)
- Fri84%(51 flights)
- Sat77%(47 flights)
- Sun70%(53 flights)
79%
May
Jun 80% → May 79% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 30 |
| July 2025 | 90% | 29 |
| August 2025 | 67% | 27 |
| September 2025 | 86% | 29 |
| October 2025 | 80% | 30 |
| November 2025 | 90% | 29 |
| December 2025 | 81% | 31 |
| January 2026 | 73% | 30 |
| February 2026 | 50% | 28 |
| March 2026 | 87% | 30 |
| April 2026 | 70% | 30 |
| May 2026 | 79% | 29 |
- Departures on time
- 78%
- Diverted
- 3.0%
- Flights flown
- 352
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 365 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.