United Airlines · Pittsburgh, PA to San Francisco, CA · 126 flights observed, 2025-07-01 to 2026-01-05 · 2,254 mi
UA552 covers more than one route in the data window — the stats below are for PIT → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA552 on time?
Across 126 flights on PIT → SFO from 2025-07-01 to 2026-01-05, UA552 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +35 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 | 106 | 85% |
| 16-30 min | 3 | 2% |
| 31-60 min | 7 | 6% |
| 61-120 min | 3 | 2% |
| 2+ hrs | 5 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 92% | +2 min |
| 2025-08 | 23 | 91% | -6 min |
| 2025-09 | 21 | 100% | -11 min |
| 2025-10 | 17 | 88% | -5 min |
| 2025-11 | 19 | 84% | -10 min |
| 2025-12 | 13 | 54% | +35 min |
| 2026-01 | 5 | 40% | +106 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 24 | 92% |
| Tue | 10 | 60% |
| Wed | 15 | 93% |
| Thu | 24 | 88% |
| Fri | 23 | 87% |
| Sat | 5 | 60% |
| Sun | 23 | 87% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…