Flight profile · United Airlines
UA1678
San Francisco (SFO) to Washington (DCA) · scheduled 8:35 AM – 4:52 PM
How UA1678 performs
558 operations, 2024-12-19 to 2026-06-30.
UA1678 arrived on time 88.8% of the time, against 82.8% for all SFO → DCA flights — this specific departure is 6.0 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 4.5 points better.
Source: US DOT Bureau of Transportation Statistics · 558 operations between 2024-12-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1678 | 88.8% | 0.72% | -12 min | 2.9% | 558 |
| United Airlines on SFO → DCA | 84.2% | 0.63% | -10 min | 4.5% | 1,598 |
| All SFO → DCA flights | 82.8% | 0.56% | -9 min | 4.6% | 2,688 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-19 to 2026-06-30
Other routes UA1678 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 |
|---|---|---|---|
| DCA→IAH Washington to Houston | 2026-03-05 – 2026-06-30 | 80 | — |
| PHX→SFO Phoenix to San Francisco | 2025-12-02 – 2026-03-04 | 78 | — |
| EWR→LAS Newark to Las Vegas | 2024-12-03 – 2024-12-18 | 16 | — |
| ORD→BTV Chicago to Burlington | 2024-10-27 – 2024-12-02 | 37 | — |
| MFR→SFO Medford to San Francisco | 2024-03-07 – 2024-10-26 | 91 | 95.5% |
| SFO→TPA San Francisco to Tampa | 2024-08-19 – 2024-09-25 | 38 | — |
| ORD→DCA Chicago to Washington | 2024-06-27 – 2024-08-18 | 45 | — |
| CHS→ORD Charleston to Chicago | 2024-08-02 – 2024-08-18 | 10 | — |
| SFO→ANC San Francisco to Anchorage | 2024-06-29 – 2024-08-17 | 8 | — |
| SFO→BUR San Francisco to Burbank | 2024-06-01 – 2024-06-26 | 26 | — |
| SFO→IAD San Francisco to Washington | 2024-04-01 – 2024-05-22 | 52 | — |
| SFO→BOS San Francisco to Boston | 2024-02-15 – 2024-03-30 | 45 | — |
| MSP→ORD Minneapolis to Chicago | 2024-01-09 – 2024-02-14 | 37 | — |
| SFO→RNO San Francisco to Reno | 2023-12-21 – 2024-01-08 | 17 | — |
| LAX→SFO Los Angeles to San Francisco | 2023-11-28 – 2023-12-20 | 23 | — |
| SFO→BWI San Francisco to Baltimore | 2023-10-29 – 2023-11-27 | 30 | — |
| EWR→PWM Newark to Portland | 2023-10-01 – 2023-10-27 | 20 | — |
| IAH→AUS Houston to Austin | 2023-10-23 – 2023-10-23 | 1 | — |
| LAX→DEN Los Angeles to Denver | 2023-09-29 – 2023-09-30 | 2 | — |
| DCA→ORD Washington to Chicago | 2023-07-01 – 2023-09-28 | 89 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1678 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 558 records of UA1678 operating SFO → DCA, 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.