Flight profile · United Airlines
UA519
San Diego (SAN) to Denver (DEN) · scheduled 6:55 PM – 10:00 PM
How UA519 performs
312 operations, 2025-05-22 to 2026-06-29.
UA519 arrived on time 82.8% of the time, against 79.1% for all SAN → DEN flights — this specific departure is 3.7 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 1.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 312 operations between 2025-05-22 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA519 | 82.8% | 1.28% | -17 min | 6.2% | 312 |
| United Airlines on SAN → DEN | 84.6% | 1.01% | -10 min | 5.5% | 6,418 |
| All SAN → DEN flights | 79.1% | 1.05% | -7 min | 6.8% | 16,971 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-05-22 to 2026-06-29
Other routes UA519 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 |
|---|---|---|---|
| DEN→MCO Denver to Orlando | 2025-05-01 – 2026-06-28 | 186 | 89.1% |
| SFO→BNA San Francisco to Nashville | 2026-06-06 – 2026-06-20 | 3 | — |
| SFO→RNO San Francisco to Reno | 2026-05-26 – 2026-05-26 | 1 | — |
| ORD→MSY Chicago to New Orleans | 2026-03-09 – 2026-03-24 | 6 | — |
| SFO→ORD San Francisco to Chicago | 2026-02-09 – 2026-02-09 | 1 | — |
| DEN→SNA Denver to Santa Ana | 2025-10-28 – 2025-12-31 | 7 | — |
| HDN→DEN Hayden to Denver | 2025-10-11 – 2025-10-21 | 2 | — |
| IAH→FLL Houston to Fort Lauderdale | 2025-07-04 – 2025-07-04 | 1 | — |
| SFO→SAN San Francisco to San Diego | 2025-06-01 – 2025-06-25 | 25 | — |
| ORD→MIA Chicago to Miami | 2024-12-19 – 2025-04-30 | 102 | 75.5% |
| CLE→ORD Cleveland to Chicago | 2025-04-07 – 2025-04-07 | 1 | — |
| SAN→ORD San Diego to Chicago | 2025-03-06 – 2025-03-29 | 24 | — |
| MIA→DEN Miami to Denver | 2025-02-15 – 2025-03-05 | 9 | — |
| SFO→SEA San Francisco to Seattle | 2025-01-07 – 2025-02-11 | 6 | — |
| IAD→MSY Washington to New Orleans | 2025-02-10 – 2025-02-10 | 1 | — |
| ORD→MSP Chicago to Minneapolis | 2024-12-24 – 2024-12-31 | 2 | — |
| ORD→RNO Chicago to Reno | 2024-12-03 – 2024-12-18 | 6 | — |
| MIA→IAH Miami to Houston | 2024-12-05 – 2024-12-16 | 10 | — |
| BOS→ORD Boston to Chicago | 2024-05-23 – 2024-12-02 | 126 | 79.4% |
| ORD→RIC Chicago to Richmond | 2024-09-26 – 2024-10-26 | 31 | — |
| ORD→BNA Chicago to Nashville | 2024-08-19 – 2024-08-31 | 13 | — |
| ORD→SFO Chicago to San Francisco | 2024-02-15 – 2024-08-18 | 150 | 40.9% |
| SFO→EUG San Francisco to Eugene | 2024-06-27 – 2024-08-18 | 52 | — |
| RSW→ORD Fort Myers to Chicago | 2024-08-01 – 2024-08-18 | 18 | — |
| MCI→ORD Kansas City to Chicago | 2024-07-01 – 2024-07-31 | 30 | — |
| SFO→SBA San Francisco to Santa Barbara | 2024-06-01 – 2024-06-26 | 26 | — |
| DFW→ORD Dallas–Fort Worth to Chicago | 2024-03-07 – 2024-03-30 | 24 | — |
| ORF→IAD Norfolk to Washington | 2024-03-01 – 2024-03-06 | 4 | — |
| DEN→MEM Denver to Memphis | 2024-01-09 – 2024-02-14 | 37 | — |
| SFO→IAD San Francisco to Washington | 2023-09-05 – 2024-01-08 | 96 | 77.9% |
| EWR→PBI Newark to West Palm Beach | 2023-10-29 – 2023-11-27 | 30 | — |
| LAS→EWR Las Vegas to Newark | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA519 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 312 records of UA519 operating SAN → DEN, 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.