UA552 PIT → SFO

United Airlines · Pittsburgh, PA to San Francisco, CA · 126 flights observed, 2025-07-01 to 2026-01-05 · 2,254 mi

This flight has been getting less reliable recently — 2026-01's on-time rate (40%) is well below the 85% average from earlier months.

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”.

On-time arrival
85%
Median delay
-7 min
90th percentile
+35 min
Cancellation rate
1%

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).

ArrivalFlightsShare
Early / on-time10685%
16-30 min32%
31-60 min76%
61-120 min32%
2+ hrs54%

Performance by month

MonthFlightsOn-timeAvg delay
2025-072692%+2 min
2025-082391%-6 min
2025-0921100%-11 min
2025-101788%-5 min
2025-111984%-10 min
2025-121354%+35 min
2026-01540%+106 min

Performance by day of week

DayFlightsOn-time
Mon2492%
Tue1060%
Wed1593%
Thu2488%
Fri2387%
Sat560%
Sun2387%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…