Flight profile · United Airlines
UA1668
Austin (AUS) to San Francisco (SFO) · scheduled 9:30 AM – 10:55 AM
How UA1668 performs
854 operations, 2023-07-01 to 2026-06-30.
UA1668 arrived on time 80.9% of the time, against 77.1% for all AUS → SFO flights — this specific departure is 3.8 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 854 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1668 | 80.9% | 0.47% | -9 min | 7.1% | 854 |
| United Airlines on AUS → SFO | 80.3% | 0.98% | -9 min | 8.0% | 4,377 |
| All AUS → SFO flights | 77.1% | 1.17% | -6 min | 8.2% | 7,020 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA1668 run worse on particular days?
Tuesday is historically the most reliable day and Thursday the least, a gap of 13.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA1668 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→SAN San Francisco to San Diego | 2026-03-05 – 2026-04-29 | 56 | — |
| SFO→PDX San Francisco to Portland | 2025-08-19 – 2026-03-04 | 181 | 87.2% |
| SEA→IAH Seattle to Houston | 2025-06-27 – 2025-08-18 | 39 | — |
| IAH→BNA Houston to Nashville | 2025-06-26 – 2025-08-18 | 38 | — |
| IAD→LAS Washington to Las Vegas | 2025-05-22 – 2025-06-25 | 34 | — |
| IAD→ORF Washington to Norfolk | 2025-03-30 – 2025-04-30 | 32 | — |
| LAX→EWR Los Angeles to Newark | 2025-02-16 – 2025-03-02 | 3 | — |
| PWM→IAD Portland to Washington | 2024-12-19 – 2025-01-06 | 19 | — |
| IAD→SAT Washington to San Antonio | 2024-12-19 – 2025-01-06 | 13 | — |
| ORD→PBI Chicago to West Palm Beach | 2024-12-18 – 2024-12-18 | 1 | — |
| DEN→GRR Denver to Grand Rapids | 2024-06-27 – 2024-06-30 | 4 | — |
| BWI→IAH Baltimore to Houston | 2024-03-31 – 2024-03-31 | 1 | — |
| ONT→DEN Ontario to Denver | 2024-01-09 – 2024-02-14 | 37 | — |
| CMH→ORD Columbus to Chicago | 2023-12-21 – 2024-01-08 | 7 | — |
| ORD→IND Chicago to Indianapolis | 2024-01-05 – 2024-01-08 | 3 | — |
| LAX→BHM Los Angeles to Birmingham | 2024-01-02 – 2024-01-02 | 1 | — |
| ORD→SAV Chicago to Savannah | 2023-12-23 – 2023-12-26 | 2 | — |
| LGA→IAH New York to Houston | 2023-10-06 – 2023-10-06 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1668 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 854 records of UA1668 operating AUS → 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.