UA1850 PIT → SFO

United Airlines · Pittsburgh, PA to San Francisco, CA · 18 flights observed, 2025-12-18 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.

UA1850 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
72%
Median delay
0 min
90th percentile
+57 min
Cancellation rate
0%

How often is UA1850 on time?

Across 18 flights on PIT → SFO from 2025-12-18 to 2026-01-05, UA1850 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +57 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time1372%
16-30 min16%
31-60 min211%
61-120 min211%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-121385%-2 min
2026-01540%+39 min

Performance by day of week

DayFlightsOn-time
Mon367%
Tue250%
Wed2100%
Thu2100%
Fri3100%
Sat333%
Sun367%

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