Flight OddsUnited Airlines · San Diego, CA to San Francisco, CA · 143 flights observed, 2026-01-06 to 2026-06-30 · 447 mi
UA2309 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 UA2309 on time?
Across 143 flights on SAN → SFO from 2026-01-06 to 2026-06-30, UA2309 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +5 min, and the worst 10% of flights arrived +50 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 96 | 67% |
| 16-30 min | 22 | 15% |
| 31-60 min | 16 | 11% |
| 61-120 min | 8 | 6% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 100% | -26 min |
| 2026-02 | 21 | 86% | -7 min |
| 2026-03 | 5 | 100% | -5 min |
| 2026-04 | 30 | 60% | +16 min |
| 2026-05 | 31 | 45% | +27 min |
| 2026-06 | 30 | 50% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 22 | 64% |
| Tue | 20 | 65% |
| Wed | 19 | 58% |
| Thu | 21 | 62% |
| Fri | 21 | 67% |
| Sat | 18 | 78% |
| Sun | 22 | 77% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…