Flight profile · United Airlines
UA597
Denver (DEN) to Boston (BOS) · scheduled 2:10 PM – 8:13 PM
How UA597 performs
579 operations, 2024-03-31 to 2026-06-30.
UA597 arrived on time 69.8% of the time, against 71.3% for all DEN → BOS flights — this specific departure is 1.5 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 579 operations between 2024-03-31 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA597 | 69.8% | 1.21% | -6 min | 14.5% | 579 |
| United Airlines on DEN → BOS | 76.6% | 1.02% | -6 min | 9.3% | 5,775 |
| All DEN → BOS flights | 71.3% | 0.99% | -3 min | 11.1% | 11,395 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-03-31 to 2026-06-30
Other routes UA597 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 |
|---|---|---|---|
| PHX→DEN Phoenix to Denver | 2025-08-19 – 2026-06-30 | 234 | 86.6% |
| SLC→DEN Salt Lake City to Denver | 2026-02-12 – 2026-05-18 | 28 | — |
| OMA→DEN Omaha to Denver | 2026-04-30 – 2026-05-04 | 3 | — |
| ORD→PHX Chicago to Phoenix | 2025-11-03 – 2025-12-01 | 12 | — |
| DEN→EWR Denver to Newark | 2025-08-19 – 2025-09-24 | 37 | — |
| EWR→FLL Newark to Fort Lauderdale | 2025-08-19 – 2025-09-01 | 13 | — |
| BOS→IAD Boston to Washington | 2025-08-01 – 2025-08-18 | 18 | — |
| CLE→EWR Cleveland to Newark | 2025-06-26 – 2025-07-31 | 36 | — |
| SNA→DEN Santa Ana to Denver | 2024-10-27 – 2025-05-21 | 127 | 89.8% |
| BZN→DEN Bozeman to Denver | 2025-05-04 – 2025-05-18 | 3 | — |
| DEN→OMA Denver to Omaha | 2025-05-01 – 2025-05-02 | 2 | — |
| SEA→DEN Seattle to Denver | 2025-03-06 – 2025-04-30 | 56 | — |
| BNA→DEN Nashville to Denver | 2024-03-07 – 2024-03-29 | 14 | — |
| EWR→LAS Newark to Las Vegas | 2023-07-01 – 2024-03-06 | 206 | 85.2% |
Because the same number has served different journeys, the statistics above describe only the route UA597 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 579 records of UA597 operating DEN → BOS, 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.