Flight OddsUnited Airlines · San Diego, CA to San Francisco, CA · 179 flights observed, 2025-07-01 to 2026-01-05 · 447 mi
UA1871 covers more than one route in the data window — the stats below are for SAN → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA1871 on time?
Across 179 flights on SAN → SFO from 2025-07-01 to 2026-01-05, UA1871 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +83 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 | 136 | 77% |
| 16-30 min | 6 | 3% |
| 31-60 min | 13 | 7% |
| 61-120 min | 12 | 7% |
| 2+ hrs | 10 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 24 | 71% | +46 min |
| 2025-08 | 27 | 85% | +4 min |
| 2025-09 | 30 | 90% | +21 min |
| 2025-10 | 31 | 84% | +3 min |
| 2025-11 | 29 | 69% | +25 min |
| 2025-12 | 31 | 71% | +12 min |
| 2026-01 | 5 | 20% | +94 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 72% |
| Tue | 27 | 85% |
| Wed | 27 | 81% |
| Thu | 25 | 60% |
| Fri | 26 | 69% |
| Sat | 20 | 90% |
| Sun | 27 | 81% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…