Flight OddsUnited Airlines · San Diego, CA to San Francisco, CA · 111 flights observed, 2026-02-12 to 2026-06-29 · 447 mi
UA2278 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 UA2278 on time?
Across 111 flights on SAN → SFO from 2026-02-12 to 2026-06-29, UA2278 arrived within 15 minutes of schedule 41% of the time. The median arrival delay was +32 min, and the worst 10% of flights arrived +97 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 | 45 | 41% |
| 16-30 min | 9 | 8% |
| 31-60 min | 20 | 18% |
| 61-120 min | 30 | 27% |
| 2+ hrs | 6 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 17 | 59% | +25 min |
| 2026-03 | 22 | 82% | -1 min |
| 2026-04 | 29 | 28% | +45 min |
| 2026-05 | 21 | 19% | +54 min |
| 2026-06 | 21 | 24% | +62 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 16 | 25% |
| Tue | 8 | 75% |
| Wed | 16 | 19% |
| Thu | 20 | 45% |
| Fri | 20 | 45% |
| Sat | 11 | 73% |
| Sun | 19 | 32% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…