UA5271 SBP → SFO

United Airlines · San Luis Obispo, CA to San Francisco, CA · 156 flights observed, 2025-07-01 to 2026-01-05 · 191 mi

This flight has been getting less reliable recently — 2026-01's on-time rate (0%) is well below the 81% average from earlier months.

UA5271 covers more than one route in the data window — the stats below are for SBP → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
80%
Median delay
-15 min
90th percentile
+84 min
Cancellation rate
5%

How often is UA5271 on time?

Across 156 flights on SBP → SFO from 2025-07-01 to 2026-01-05, UA5271 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +84 min or later. 5% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time11780%
16-30 min21%
31-60 min107%
61-120 min85%
2+ hrs107%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073083%-2 min
2025-083097%-9 min
2025-092483%-4 min
2025-102774%+5 min
2025-112075%+16 min
2025-121173%+22 min
2026-0150%+139 min

Performance by day of week

DayFlightsOn-time
Mon2378%
Tue2181%
Wed2277%
Thu2286%
Fri2282%
Sat1479%
Sun2374%

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