Flight Reliability
UA 5338 · United Airlines
FAT → San Francisco (FAT–SFO)
86
Pretty Reliable
WanderNerd Reliability Score
- 84%
- Arrive within 15 minutes
- 10 min
- Average arrival delay
- 1.4%
- Cancelled
- 8 min early
- Median arrival delay
Based on 364 historical flights. Data through May 2026.
What the data says
Mondays have been rough.
UA 5338 arrived on time 92% of the time on Tuesdays and just 75% on Mondays. That gap is worth planning around.
Better than the FAT–SFO route average.
UA 5338 arrived on time 84% of the time, versus 71% across the FAT–SFO route.
A bit ahead of the United Airlines network.
UA 5338 arrived on time 84% of the time, versus 79% across the United Airlines network.
Recent months have been rougher.
UA 5338 arrived on time 76% of the time over the last three months in the data, compared with 85% in the three months before that.
The breakdown
- Mon75%(51 flights)
- Tue92%(51 flights)
- Wed86%(51 flights)
- Thu80%(51 flights)
- Fri85%(52 flights)
- Sat84%(51 flights)
- Sun83%(52 flights)
81%
May
Jun 100% → May 81% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 100% | 30 |
| July 2025 | 87% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 77% | 30 |
| October 2025 | 90% | 31 |
| November 2025 | 83% | 30 |
| December 2025 | 97% | 29 |
| January 2026 | 72% | 29 |
| February 2026 | 85% | 27 |
| March 2026 | 84% | 31 |
| April 2026 | 62% | 29 |
| May 2026 | 81% | 31 |
- Departures on time
- 87%
- Diverted
- 0%
- Flights flown
- 359
- 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.