UA5578 PSC → SFO

United Airlines · Pasco/Kennewick/Richland, WA to San Francisco, CA · 229 flights observed, 2025-10-26 to 2026-06-30 · 620 mi

This flight has been getting less reliable recently — 2026-06's on-time rate (33%) is well below the 78% average from earlier months.

UA5578 covers more than one route in the data window — the stats below are for PSC → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
71%
Median delay
-12 min
90th percentile
+80 min
Cancellation rate
0%

How often is UA5578 on time?

Across 229 flights on PSC → SFO from 2025-10-26 to 2026-06-30, UA5578 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +80 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time16271%
16-30 min198%
31-60 min146%
61-120 min209%
2+ hrs136%

Performance by month

MonthFlightsOn-timeAvg delay
2025-10683%+2 min
2025-112990%-13 min
2025-123080%+6 min
2026-011878%-8 min
2026-022383%-3 min
2026-033194%-21 min
2026-043063%+60 min
2026-053152%+31 min
2026-063033%+68 min

Performance by day of week

DayFlightsOn-time
Mon3672%
Tue3080%
Wed2972%
Thu3462%
Fri3566%
Sat3077%
Sun3471%

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