Flight Reliability
UA 5899 · United Airlines
Reno → San Francisco (RNO–SFO)91% of its flights flew this route. The rest (ORD–SDF) are included in these numbers.
66
Usually Fine
WanderNerd Reliability Score
- 66%
- Arrive within 15 minutes
- 12 min
- Average arrival delay
- 1.4%
- Cancelled
- 1 min
- Median arrival delay
Based on 346 historical flights. Data through May 2026.
What the data says
Thursdays have been rough.
UA 5899 arrived on time 80% of the time on Tuesdays and just 60% on Thursdays. That gap is worth planning around.
Lagging the United Airlines network.
UA 5899 arrived on time 66% of the time, versus 79% across the United Airlines network.
Recent months have been rougher.
UA 5899 arrived on time 55% of the time over the last three months in the data, compared with 72% in the three months before that.
The breakdown
- Mon62%(47 flights)
- Tue80%(49 flights)
- Wed69%(48 flights)
- Thu60%(50 flights)
- Fri60%(48 flights)
- Sat69%(49 flights)
- Sun61%(49 flights)
19%
May
Jun 80% → May 19% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 80% | 30 |
| July 2025 | 55% | 31 |
| August 2025 | 77% | 13 |
| September 2025 | 70% | 30 |
| October 2025 | 77% | 31 |
| November 2025 | 58% | 26 |
| December 2025 | 58% | 31 |
| January 2026 | 84% | 31 |
| February 2026 | 73% | 26 |
| March 2026 | 90% | 31 |
| April 2026 | 55% | 29 |
| May 2026 | 19% | 31 |
- Departures on time
- 77%
- Diverted
- 0.3%
- Flights flown
- 340
- Months covered
- 12
Same route, other flights
Keep nerding
Based on 346 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.