Flight profile · United Airlines
UA648
Newark (EWR) to San Francisco (SFO) · scheduled 10:00 AM – 5:40 PM
How UA648 performs
925 operations, 2023-10-29 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 925 operations between 2023-10-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA648 | 73.8% | 1.19% | -6 min | 11.3% | 925 |
| United Airlines on EWR → SFO | 72.5% | 2.10% | -5 min | 11.9% | 10,552 |
| All EWR → SFO flights | 72.9% | 2.03% | -6 min | 11.5% | 12,686 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30
By day of week
Does UA648 run worse on particular days?
Tuesday is historically the most reliable day and Friday the least, a gap of 11.8 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA648 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 |
|---|---|---|---|
| STL→EWR St. Louis to Newark | 2024-06-27 – 2026-06-30 | 10 | — |
| SFO→MSP San Francisco to Minneapolis | 2026-06-28 – 2026-06-29 | 2 | — |
| SFO→ORD San Francisco to Chicago | 2026-05-01 – 2026-05-18 | 14 | — |
| PBI→EWR West Palm Beach to Newark | 2024-05-02 – 2025-09-21 | 30 | — |
| SFO→SEA San Francisco to Seattle | 2025-05-01 – 2025-05-21 | 21 | — |
| BWI→ORD Baltimore to Chicago | 2025-04-01 – 2025-04-30 | 30 | — |
| SFO→RNO San Francisco to Reno | 2024-09-26 – 2024-09-30 | 5 | — |
| SFO→PDX San Francisco to Portland | 2024-02-15 – 2024-03-06 | 21 | — |
| BIL→DEN Billings to Denver | 2023-07-01 – 2023-10-28 | 120 | 90.7% |
| DEN→RSW Denver to Fort Myers | 2023-08-01 – 2023-09-04 | 35 | — |
Because the same number has served different journeys, the statistics above describe only the route UA648 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 925 records of UA648 operating EWR → 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.