Flight OddsUnited Airlines · San Francisco, CA to San Diego, CA · 135 flights observed, 2026-01-06 to 2026-05-20 · 447 mi
UA1577 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 UA1577 on time?
Across 135 flights on SFO → SAN from 2026-01-06 to 2026-05-20, UA1577 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +34 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 | 104 | 78% |
| 16-30 min | 15 | 11% |
| 31-60 min | 10 | 7% |
| 61-120 min | 4 | 3% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 92% | +2 min |
| 2026-02 | 28 | 75% | +4 min |
| 2026-03 | 31 | 68% | +8 min |
| 2026-04 | 29 | 79% | +1 min |
| 2026-05 | 20 | 75% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 18 | 50% |
| Tue | 20 | 85% |
| Wed | 20 | 85% |
| Thu | 19 | 53% |
| Fri | 19 | 89% |
| Sat | 19 | 95% |
| Sun | 19 | 84% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…