Flight profile · United Airlines
UA621
Albuquerque (ABQ) to Denver (DEN) · scheduled 7:00 AM – 8:24 AM
How UA621 performs
503 operations, 2025-02-13 to 2026-06-30.
UA621 arrived on time 88.6% of the time, against 82.7% for all ABQ → DEN flights — this specific departure is 5.9 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 4.1 points better.
Source: US DOT Bureau of Transportation Statistics · 503 operations between 2025-02-13 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA621 | 88.6% | 0.80% | -9 min | 2.6% | 503 |
| United Airlines on ABQ → DEN | 84.4% | 0.84% | -9 min | 5.6% | 2,608 |
| All ABQ → DEN flights | 82.7% | 0.86% | -8 min | 5.5% | 8,995 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-02-13 to 2026-06-30
Other routes UA621 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→GSP Denver to Greenville/Greer/Spartanburg | 2026-05-01 – 2026-05-20 | 20 | — |
| DEN→CLE Denver to Cleveland | 2024-03-31 – 2025-02-12 | 300 | 86.2% |
| EWR→HDN Newark to Hayden | 2024-12-19 – 2025-01-06 | 15 | — |
| DTW→DEN Detroit to Denver | 2024-01-09 – 2024-03-30 | 82 | — |
| ORD→IAH Chicago to Houston | 2023-11-28 – 2024-01-08 | 42 | — |
| MSP→ORD Minneapolis to Chicago | 2023-10-29 – 2023-11-27 | 25 | — |
| BOS→ORD Boston to Chicago | 2023-08-01 – 2023-10-28 | 74 | — |
| ORD→GRR Chicago to Grand Rapids | 2023-10-01 – 2023-10-28 | 27 | — |
| ORD→LAX Chicago to Los Angeles | 2023-09-08 – 2023-09-28 | 4 | — |
| MCI→EWR Kansas City to Newark | 2023-09-05 – 2023-09-05 | 1 | — |
| EWR→SAV Newark to Savannah | 2023-07-31 – 2023-07-31 | 1 | — |
| ORD→SLC Chicago to Salt Lake City | 2023-07-01 – 2023-07-30 | 25 | — |
Because the same number has served different journeys, the statistics above describe only the route UA621 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 503 records of UA621 operating ABQ → 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.