UA1375 ONT → SFO

United Airlines · Ontario, CA to San Francisco, CA · 98 flights observed, 2026-03-05 to 2026-06-30 · 363 mi

This flight has been getting less reliable recently — 2026-06's on-time rate (30%) is well below the 70% average from earlier months.

UA1375 covers more than one route in the data window — the stats below are for ONT → SFO, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
63%
Median delay
+7 min
90th percentile
+64 min
Cancellation rate
0%

How often is UA1375 on time?

Across 98 flights on ONT → SFO from 2026-03-05 to 2026-06-30, UA1375 arrived within 15 minutes of schedule 63% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +64 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time6263%
16-30 min1010%
31-60 min1515%
61-120 min66%
2+ hrs55%

Performance by month

MonthFlightsOn-timeAvg delay
2026-0327100%-14 min
2026-043073%+16 min
2026-051136%+62 min
2026-063030%+33 min

Performance by day of week

DayFlightsOn-time
Mon1471%
Tue1457%
Wed1369%
Thu1547%
Fri1464%
Sat1464%
Sun1471%

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