Flight profile · United Airlines
UA1581
San Francisco (SFO) to Honolulu (HNL) · scheduled 7:33 PM – 10:08 PM
How UA1581 performs
271 operations, 2023-07-01 to 2026-06-30.
UA1581 arrived on time 92.2% of the time, against 80.1% for all SFO → HNL flights — this specific departure is 12.1 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 9.3 points better.
Source: US DOT Bureau of Transportation Statistics · 271 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1581 | 92.2% | 0.74% | -14 min | 3.7% | 271 |
| United Airlines on SFO → HNL | 82.9% | 0.31% | -8 min | 5.9% | 5,147 |
| All SFO → HNL flights | 80.1% | 1.05% | -5 min | 5.8% | 7,530 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes UA1581 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 |
|---|---|---|---|
| DTW→IAD Detroit to Washington | 2026-05-21 – 2026-05-21 | 1 | — |
| PSP→SFO Palm Springs to San Francisco | 2026-04-09 – 2026-04-27 | 6 | — |
| IAH→JAC Houston to Jackson | 2026-03-07 – 2026-04-05 | 10 | — |
| IAD→CMH Washington to Columbus | 2026-03-05 – 2026-03-27 | 17 | — |
| BDL→IAD Hartford to Washington | 2026-03-05 – 2026-03-27 | 14 | — |
| SLC→SFO Salt Lake City to San Francisco | 2026-01-06 – 2026-03-04 | 58 | — |
| FLL→SFO Fort Lauderdale to San Francisco | 2025-12-02 – 2025-12-17 | 16 | — |
| ORD→JAX Chicago to Jacksonville | 2025-10-26 – 2025-12-01 | 32 | — |
| CLE→ORD Cleveland to Chicago | 2025-10-26 – 2025-12-01 | 32 | — |
| DEN→HNL Denver to Honolulu | 2025-11-01 – 2025-11-15 | 3 | — |
| IAH→SAN Houston to San Diego | 2025-09-25 – 2025-10-25 | 31 | — |
| RSW→IAH Fort Myers to Houston | 2025-08-19 – 2025-09-24 | 37 | — |
| PHX→SFO Phoenix to San Francisco | 2025-05-22 – 2025-05-22 | 1 | — |
| FLL→EWR Fort Lauderdale to Newark | 2025-05-01 – 2025-05-21 | 20 | — |
| PBI→EWR West Palm Beach to Newark | 2024-02-15 – 2025-04-30 | 74 | — |
| HDN→IAD Hayden to Washington | 2025-01-11 – 2025-03-29 | 12 | — |
| CLE→EWR Cleveland to Newark | 2025-02-13 – 2025-03-28 | 38 | — |
| EWR→RDU Newark to Raleigh–Durham | 2025-02-13 – 2025-03-05 | 15 | — |
| DCA→ORD Washington to Chicago | 2023-12-21 – 2025-02-12 | 38 | — |
| IAD→ORD Washington to Chicago | 2024-12-19 – 2025-01-06 | 19 | — |
| ORD→EGE Chicago to Eagle | 2024-12-19 – 2025-01-05 | 18 | — |
| LAX→EWR Los Angeles to Newark | 2024-12-04 – 2024-12-18 | 15 | — |
| SFO→ORD San Francisco to Chicago | 2024-12-03 – 2024-12-03 | 1 | — |
| EWR→ATL Newark to Atlanta | 2024-10-27 – 2024-12-02 | 32 | — |
| IAH→SAT Houston to San Antonio | 2024-09-26 – 2024-10-26 | 31 | — |
| LGA→ORD New York to Chicago | 2024-08-19 – 2024-09-25 | 38 | — |
| IAD→BNA Washington to Nashville | 2024-05-23 – 2024-06-26 | 35 | — |
| ORD→IAD Chicago to Washington | 2024-05-23 – 2024-06-26 | 35 | — |
| GEG→DEN Spokane to Denver | 2024-05-02 – 2024-05-22 | 21 | — |
| EWR→PBI Newark to West Palm Beach | 2024-03-31 – 2024-05-01 | 32 | — |
| MCO→EWR Orlando to Newark | 2024-03-31 – 2024-03-31 | 1 | — |
| EWR→FLL Newark to Fort Lauderdale | 2024-03-07 – 2024-03-30 | 24 | — |
| ORD→LGA Chicago to New York | 2023-09-05 – 2024-02-14 | 99 | 84.5% |
| PBI→ORD West Palm Beach to Chicago | 2023-12-26 – 2024-01-06 | 12 | — |
| SFO→BOI San Francisco to Boise | 2023-10-29 – 2023-11-27 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1581 currently operates. Blending them would produce an average of two different flights.
Why UA1581 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for UA1581 on SFO → HNL. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on SFO → HNL
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA638 | United Airlines | 89.8% | 11 min early | 677 |
| UA1175 | United Airlines | 85.4% | 7 min early | 1,096 |
| UA300 | United Airlines | 81.6% | 7 min early | 1,061 |
| UA1509 | United Airlines | 81.1% | 7 min early | 1,075 |
| UA2380 | United Airlines | 76.3% | 4 min early | 795 |
| HA11 | Hawaiian Airlines | 73.5% | 2 min late | 848 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 271 records of UA1581 operating SFO → HNL, 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.