United Airlines · San Francisco, CA to San Diego, CA · 125 flights observed, 2025-10-26 to 2026-03-04 · 447 mi
UA2391 covers more than one route in the data window — the stats below are for SFO → SAN, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA2391 on time?
Across 125 flights on SFO → SAN from 2025-10-26 to 2026-03-04, UA2391 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +57 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 96 | 77% |
| 16-30 min | 5 | 4% |
| 31-60 min | 12 | 10% |
| 61-120 min | 7 | 6% |
| 2+ hrs | 4 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 100% | -5 min |
| 2025-11 | 24 | 79% | +1 min |
| 2025-12 | 31 | 68% | +23 min |
| 2026-01 | 31 | 81% | +2 min |
| 2026-02 | 28 | 75% | +18 min |
| 2026-03 | 4 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 19 | 68% |
| Tue | 19 | 84% |
| Wed | 18 | 72% |
| Thu | 18 | 78% |
| Fri | 18 | 78% |
| Sat | 13 | 85% |
| Sun | 19 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…