Flight profile · United Airlines
UA1227
Newark (EWR) to San Francisco (SFO) · scheduled 2:00 PM – 5:34 PM
How UA1227 performs
421 operations, 2025-03-30 to 2026-06-30.
UA1227 arrived on time 74.1% of the time, against 72.9% for all EWR → SFO flights — this specific departure is 1.2 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 1.7 points better.
Source: US DOT Bureau of Transportation Statistics · 421 operations between 2025-03-30 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1227 | 74.1% | 2.14% | -6 min | 12.0% | 421 |
| 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 · 2025-03-30 to 2026-06-30
Other routes UA1227 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 |
|---|---|---|---|
| MCO→EWR Orlando to Newark | 2025-05-22 – 2026-06-30 | 222 | 88.9% |
| RDU→EWR Raleigh–Durham to Newark | 2025-05-01 – 2025-12-17 | 63 | — |
| SFO→TUS San Francisco to Tucson | 2025-09-25 – 2025-10-24 | 30 | — |
| BNA→EWR Nashville to Newark | 2025-08-19 – 2025-09-24 | 37 | — |
| SFO→PHX San Francisco to Phoenix | 2025-03-30 – 2025-08-18 | 121 | 84.2% |
| MYR→EWR Myrtle Beach to Newark | 2025-06-07 – 2025-06-21 | 3 | — |
| ORD→GRR Chicago to Grand Rapids | 2025-03-06 – 2025-03-29 | 23 | — |
| MSY→IAH New Orleans to Houston | 2025-03-07 – 2025-03-07 | 1 | — |
| EWR→MCO Newark to Orlando | 2025-02-13 – 2025-03-05 | 21 | — |
| ORD→MCO Chicago to Orlando | 2025-01-07 – 2025-02-12 | 37 | — |
| MCO→ORD Orlando to Chicago | 2024-12-19 – 2025-01-06 | 17 | — |
| IAH→TUS Houston to Tucson | 2024-12-03 – 2024-12-18 | 12 | — |
| SAV→ORD Savannah to Chicago | 2024-12-07 – 2024-12-15 | 4 | — |
| IAH→MIA Houston to Miami | 2024-10-27 – 2024-12-02 | 37 | — |
| MIA→ORD Miami to Chicago | 2024-11-30 – 2024-12-01 | 2 | — |
| IAH→ORD Houston to Chicago | 2024-09-26 – 2024-10-26 | 31 | — |
| ORD→IAD Chicago to Washington | 2024-09-26 – 2024-10-26 | 31 | — |
| TUS→IAH Tucson to Houston | 2024-09-26 – 2024-10-26 | 31 | — |
| ORD→ALB Chicago to Albany | 2024-08-19 – 2024-09-25 | 38 | — |
| LAX→LIH Los Angeles to Lihue, Kauai | 2023-07-01 – 2024-08-18 | 68 | — |
| BOS→EWR Boston to Newark | 2024-05-23 – 2024-06-26 | 30 | — |
| ORD→BZN Chicago to Bozeman | 2024-05-02 – 2024-05-22 | 21 | — |
| IAD→LAX Washington to Los Angeles | 2024-03-31 – 2024-05-01 | 32 | — |
| EWR→ORD Newark to Chicago | 2023-12-21 – 2024-01-08 | 19 | — |
| IAH→IAD Houston to Washington | 2023-11-28 – 2023-12-20 | 23 | — |
| ORD→TPA Chicago to Tampa | 2023-10-29 – 2023-11-27 | 30 | — |
| TPA→IAH Tampa to Houston | 2023-10-29 – 2023-10-31 | 3 | — |
| SFO→PIT San Francisco to Pittsburgh | 2023-09-29 – 2023-10-28 | 30 | — |
| PIT→ORD Pittsburgh to Chicago | 2023-09-30 – 2023-10-28 | 26 | — |
| EWR→DEN Newark to Denver | 2023-07-02 – 2023-09-28 | 80 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1227 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 421 records of UA1227 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.