UA2391 SFO → SAN

United Airlines · San Francisco, CA to San Diego, CA · 125 flights observed, 2025-10-26 to 2026-03-04 · 447 mi

This flight is usually on time, but has a real long-delay tail — typical (median) delay is -5 min, while the worst 10% run +57 min or later.

UA2391 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
-5 min
90th percentile
+57 min
Cancellation rate
1%

How often is UA2391 on time?

Across 125 flights on SFO → SAN from 2025-10-26 to 2026-03-04, UA2391 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +57 min or later. 1% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time9677%
16-30 min54%
31-60 min1210%
61-120 min76%
2+ hrs43%

Performance by month

MonthFlightsOn-timeAvg delay
2025-106100%-5 min
2025-112479%+1 min
2025-123168%+23 min
2026-013181%+2 min
2026-022875%+18 min
2026-034100%-10 min

Performance by day of week

DayFlightsOn-time
Mon1968%
Tue1984%
Wed1872%
Thu1878%
Fri1878%
Sat1385%
Sun1979%

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