UA2142 SFO → SAN

United Airlines · San Francisco, CA to San Diego, CA · 157 flights observed, 2025-12-18 to 2026-06-30 · 447 mi

This flight's scheduled flight time has grown by 18 min since 2025-12 — some of the on-time performance may reflect a more generous published schedule, not a faster or more reliable flight.

UA2142 covers more than one route in the data window — the stats below are for SFO → SAN, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
77%
Median delay
-1 min
90th percentile
+40 min
Cancellation rate
0%

How often is UA2142 on time?

Across 157 flights on SFO → SAN from 2025-12-18 to 2026-06-30, UA2142 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +40 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time12077%
16-30 min138%
31-60 min117%
61-120 min85%
2+ hrs43%

Performance by month

MonthFlightsOn-timeAvg delay
2025-121331%+93 min
2026-012976%+10 min
2026-022483%+13 min
2026-032095%-4 min
2026-043080%-2 min
2026-052383%+4 min
2026-061771%+8 min

Performance by day of week

DayFlightsOn-time
Mon2075%
Tue1486%
Wed1889%
Thu2875%
Fri2759%
Sat2286%
Sun2778%

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