Flight profile · United Airlines
UA1434
Washington (IAD) to San Francisco (SFO) · scheduled 12:35 PM – 3:23 PM
How UA1434 performs
279 operations, 2025-08-19 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 279 operations between 2025-08-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1434 | 78.4% | 0.36% | -4 min | 8.3% | 279 |
| United Airlines on IAD → SFO | 79.5% | 1.00% | -7 min | 7.1% | 7,303 |
| All IAD → SFO flights | 78.6% | 1.00% | -7 min | 7.4% | 8,273 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-08-19 to 2026-06-30
Other routes UA1434 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 |
|---|---|---|---|
| JAX→IAD Jacksonville to Washington | 2025-12-03 – 2026-06-30 | 165 | 92.0% |
| SFO→RNO San Francisco to Reno | 2026-05-21 – 2026-06-24 | 35 | — |
| SFO→PSP San Francisco to Palm Springs | 2026-03-29 – 2026-04-29 | 32 | — |
| SFO→SEA San Francisco to Seattle | 2026-03-05 – 2026-03-28 | 24 | — |
| SFO→SAN San Francisco to San Diego | 2025-03-30 – 2026-03-04 | 339 | 73.4% |
| BOS→SFO Boston to San Francisco | 2025-03-06 – 2025-04-30 | 56 | — |
| FLL→EWR Fort Lauderdale to Newark | 2024-08-19 – 2025-03-05 | 59 | — |
| SFO→ONT San Francisco to Ontario | 2025-02-04 – 2025-02-04 | 1 | — |
| STL→IAH St. Louis to Houston | 2025-01-07 – 2025-01-07 | 1 | — |
| ORD→RSW Chicago to Fort Myers | 2024-12-19 – 2025-01-06 | 17 | — |
| LGA→ORD New York to Chicago | 2024-12-19 – 2025-01-05 | 5 | — |
| BUR→SFO Burbank to San Francisco | 2024-09-26 – 2024-12-18 | 74 | — |
| SFO→TPA San Francisco to Tampa | 2024-12-05 – 2024-12-16 | 10 | — |
| SFO→BNA San Francisco to Nashville | 2024-09-26 – 2024-10-25 | 18 | — |
| EWR→MCO Newark to Orlando | 2024-05-23 – 2024-08-18 | 88 | — |
| IAH→EWR Houston to Newark | 2024-05-23 – 2024-05-23 | 1 | — |
| EWR→SFO Newark to San Francisco | 2024-05-02 – 2024-05-22 | 21 | — |
| IAH→LAX Houston to Los Angeles | 2024-03-31 – 2024-05-01 | 32 | — |
| IAH→MFE Houston to McAllen | 2024-03-07 – 2024-03-30 | 24 | — |
| PHL→IAH Philadelphia to Houston | 2024-03-07 – 2024-03-30 | 24 | — |
| DEN→GRR Denver to Grand Rapids | 2024-02-15 – 2024-03-06 | 21 | — |
| MCO→DEN Orlando to Denver | 2024-01-09 – 2024-02-14 | 37 | — |
| ORD→SFO Chicago to San Francisco | 2023-12-21 – 2024-01-08 | 19 | — |
| SFO→MCI San Francisco to Kansas City | 2023-10-29 – 2023-12-20 | 53 | — |
| ATL→IAH Atlanta to Houston | 2023-07-01 – 2023-10-28 | 119 | 89.9% |
Because the same number has served different journeys, the statistics above describe only the route UA1434 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 279 records of UA1434 operating IAD → 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.