Flight profile · United Airlines
UA2179
Chicago (ORD) to San Francisco (SFO) · scheduled 6:20 PM – 9:20 PM
How UA2179 performs
379 operations, 2025-05-22 to 2026-06-30.
UA2179 arrived on time 48.0% of the time, against 72.0% for all ORD → SFO flights — this specific departure is 24.0 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 26.4 points worse.
Source: US DOT Bureau of Transportation Statistics · 379 operations between 2025-05-22 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2179 | 48.0% | 1.06% | 16 min | 17.3% | 379 |
| United Airlines on ORD → SFO | 74.4% | 0.98% | -4 min | 9.5% | 10,620 |
| All ORD → SFO flights | 72.0% | 1.10% | -3 min | 10.2% | 15,593 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-05-22 to 2026-06-30
Other routes UA2179 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→LAX San Francisco to Los Angeles | 2025-08-19 – 2026-06-30 | 279 | 72.7% |
| MSY→ORD New Orleans to Chicago | 2026-06-25 – 2026-06-30 | 6 | — |
| TPA→ORD Tampa to Chicago | 2026-03-29 – 2026-04-29 | 32 | — |
| SRQ→ORD Sarasota/Bradenton to Chicago | 2026-03-05 – 2026-03-28 | 24 | — |
| BNA→ORD Nashville to Chicago | 2026-01-06 – 2026-03-04 | 58 | — |
| STL→ORD St. Louis to Chicago | 2025-12-04 – 2025-12-15 | 6 | — |
| FLL→ORD Fort Lauderdale to Chicago | 2025-10-26 – 2025-12-01 | 36 | — |
| MCO→ORD Orlando to Chicago | 2025-09-25 – 2025-10-25 | 31 | — |
| PNS→ORD Pensacola to Chicago | 2025-02-13 – 2025-09-24 | 224 | 82.4% |
| ORD→GRR Chicago to Grand Rapids | 2025-03-30 – 2025-05-21 | 52 | — |
| ORD→PWM Chicago to Portland | 2025-04-30 – 2025-04-30 | 1 | — |
| ORD→LGA Chicago to New York | 2025-03-06 – 2025-03-29 | 24 | — |
| ORD→DEN Chicago to Denver | 2025-02-13 – 2025-03-05 | 21 | — |
| DEN→IAH Denver to Houston | 2023-07-01 – 2025-02-12 | 570 | 73.3% |
| SMF→DEN Sacramento to Denver | 2024-03-31 – 2025-02-12 | 157 | 82.7% |
| LGA→DEN New York to Denver | 2023-11-01 – 2024-12-18 | 76 | — |
| RSW→DEN Fort Myers to Denver | 2024-09-12 – 2024-09-22 | 4 | — |
| SAV→DEN Savannah to Denver | 2024-08-19 – 2024-08-31 | 13 | — |
| IND→DEN Indianapolis to Denver | 2024-05-08 – 2024-05-22 | 11 | — |
| IAH→SFO Houston to San Francisco | 2024-02-21 – 2024-02-28 | 2 | — |
| SJC→DEN San Jose to Denver | 2023-10-29 – 2023-10-31 | 3 | — |
| MSP→DEN Minneapolis to Denver | 2023-07-06 – 2023-07-31 | 11 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2179 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 379 records of UA2179 operating ORD → 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.