Flight profile · United Airlines
UA1375
Ontario (ONT) to San Francisco (SFO) · scheduled 1:50 PM – 3:15 PM
How UA1375 performs
98 operations, 2026-03-05 to 2026-06-30.
UA1375 arrived on time 62.2% of the time, against 72.1% for all ONT → SFO flights — this specific departure is 9.9 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 14.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 98 operations between 2026-03-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1375 | 62.2% | 0.00% | 7 min | 11.2% | 98 |
| United Airlines on ONT → SFO | 76.9% | 0.48% | -6 min | 6.6% | 1,856 |
| All ONT → SFO flights | 72.1% | 1.04% | -4 min | 9.1% | 4,307 |
Source: FlyerIntel analysis of US DOT BTS data · 2026-03-05 to 2026-06-30
Other routes UA1375 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| SFO→ORD San Francisco to Chicago | 2026-06-25 – 2026-06-30 | 5 | — |
| SFO→AUS San Francisco to Austin | 2026-04-30 – 2026-06-24 | 35 | — |
| SFO→OMA San Francisco to Omaha | 2026-05-21 – 2026-05-31 | 11 | — |
| PHX→EWR Phoenix to Newark | 2024-03-09 – 2026-04-29 | 671 | 82.8% |
| SFO→PHX San Francisco to Phoenix | 2025-10-26 – 2026-04-29 | 107 | 84.9% |
| SMF→SFO Sacramento to San Francisco | 2026-01-08 – 2026-01-29 | 2 | — |
| EWR→PSP Newark to Palm Springs | 2025-12-19 – 2026-01-05 | 17 | — |
| DEN→AUS Denver to Austin | 2025-03-06 – 2025-03-08 | 3 | — |
| HDN→DEN Hayden to Denver | 2024-12-19 – 2025-01-06 | 17 | — |
| IAH→BZN Houston to Bozeman | 2024-08-23 – 2024-08-31 | 4 | — |
| IAD→ORF Washington to Norfolk | 2024-03-31 – 2024-05-22 | 53 | — |
| ORF→EWR Norfolk to Newark | 2024-03-31 – 2024-03-31 | 1 | — |
| IAH→IAD Houston to Washington | 2024-03-08 – 2024-03-08 | 1 | — |
| ORF→IAD Norfolk to Washington | 2024-03-07 – 2024-03-07 | 1 | — |
| DEN→EWR Denver to Newark | 2023-10-29 – 2024-03-06 | 46 | — |
| MCO→IAD Orlando to Washington | 2024-01-09 – 2024-02-14 | 37 | — |
| IAH→ORD Houston to Chicago | 2023-12-21 – 2024-01-08 | 19 | — |
| EWR→BOS Newark to Boston | 2023-12-03 – 2023-12-20 | 7 | — |
| ORD→PHL Chicago to Philadelphia | 2023-11-01 – 2023-11-27 | 18 | — |
| RDU→ORD Raleigh–Durham to Chicago | 2023-11-01 – 2023-11-27 | 18 | — |
| EWR→SAN Newark to San Diego | 2023-08-01 – 2023-10-28 | 89 | — |
| EWR→BTV Newark to Burlington | 2023-07-02 – 2023-07-31 | 24 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1375 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 98 records of UA1375 operating ONT → SFO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.