Flight profile · United Airlines
UA1684
San Francisco (SFO) to Lihue, Kauai (LIH) · scheduled 6:40 PM – 10:44 PM
How UA1684 performs
552 operations, 2023-07-01 to 2026-06-30.
UA1684 arrived on time 88.1% of the time, against 90.8% for all SFO → LIH flights — this specific departure is 2.7 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 2.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 552 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1684 | 88.1% | 0.36% | -9 min | 3.8% | 552 |
| United Airlines on SFO → LIH | 90.9% | 0.17% | -13 min | 2.3% | 1,725 |
| All SFO → LIH flights | 90.8% | 0.16% | -13 min | 2.1% | 1,930 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes UA1684 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 |
|---|---|---|---|
| IAH→BOS Houston to Boston | 2026-04-30 – 2026-05-20 | 18 | — |
| DCA→ORD Washington to Chicago | 2026-01-06 – 2026-02-11 | 31 | — |
| AUS→SFO Austin to San Francisco | 2025-12-02 – 2025-12-17 | 14 | — |
| DEN→SLC Denver to Salt Lake City | 2025-10-26 – 2025-12-01 | 23 | — |
| SFO→LAX San Francisco to Los Angeles | 2025-10-28 – 2025-10-29 | 2 | — |
| AUS→DEN Austin to Denver | 2025-09-25 – 2025-10-23 | 5 | — |
| DFW→DEN Dallas–Fort Worth to Denver | 2025-08-21 – 2025-09-18 | 5 | — |
| IAD→AUS Washington to Austin | 2025-05-01 – 2025-05-21 | 21 | — |
| PHX→SFO Phoenix to San Francisco | 2025-02-13 – 2025-03-05 | 18 | — |
| LAS→DEN Las Vegas to Denver | 2025-01-07 – 2025-02-12 | 37 | — |
| ATL→EWR Atlanta to Newark | 2024-09-26 – 2024-12-18 | 40 | — |
| BOS→ORD Boston to Chicago | 2024-10-27 – 2024-12-02 | 32 | — |
| IAH→DEN Houston to Denver | 2024-08-19 – 2024-09-25 | 38 | — |
| SFO→SBA San Francisco to Santa Barbara | 2024-05-22 – 2024-05-22 | 1 | — |
| MCO→ORD Orlando to Chicago | 2024-05-06 – 2024-05-13 | 2 | — |
| PSP→SFO Palm Springs to San Francisco | 2024-04-15 – 2024-05-01 | 4 | — |
| DEN→LGA Denver to New York | 2024-02-15 – 2024-03-06 | 18 | — |
| IAH→DCA Houston to Washington | 2024-01-09 – 2024-02-14 | 32 | — |
| CLE→ORD Cleveland to Chicago | 2023-11-28 – 2023-12-20 | 22 | — |
| DEN→EWR Denver to Newark | 2023-11-27 – 2023-11-27 | 1 | — |
| CHS→ORD Charleston to Chicago | 2023-11-26 – 2023-11-26 | 1 | — |
| DEN→CLE Denver to Cleveland | 2023-09-29 – 2023-10-27 | 25 | — |
| EWR→MSP Newark to Minneapolis | 2023-09-05 – 2023-09-28 | 24 | — |
| SJC→DEN San Jose to Denver | 2023-08-17 – 2023-09-04 | 11 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1684 currently operates. Blending them would produce an average of two different flights.
Why UA1684 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 UA1684 on SFO → LIH. 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 → LIH
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA1111 | United Airlines | 93.1% | 14 min early | 984 |
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 552 records of UA1684 operating SFO → LIH, 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.
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