UA1791
United Airlines flight 1791 — Los Angeles (LAX) to San Francisco (SFO)
On time
74%
Avg delay
~60 min
Cancelled
0.5%
UA1791 is fairly reliable, though delays happen. About 74% of departures arrive on time. When delays happen, the most common cause is air traffic / NAS.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 63% | 0.0% | 45 min |
| 2026-07 | 81% | 0.0% | 57 min |
| 2026-06 | 54% | 0.0% | 48 min |
| 2026-06 | 77% | 0.0% | 70 min |
| 2026-05 | 24% | 0.0% | 62 min |
| 2026-05 | 71% | 0.0% | 105 min |
| 2026-04 | 33% | 0.0% | 39 min |
| 2026-04 | 100% | 0.0% | 0 min |
| 2026-04 | 92% | 0.0% | 20 min |
| 2026-03 | 90% | 0.0% | 35 min |
| 2026-02 | 50% | 0.0% | 62 min |
| 2026-02 | 100% | 0.0% | 0 min |
Top delay cause
air traffic / NAS
Based on 1,947 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.