Flight profile · United Airlines
UA644
Denver (DEN) to Portland (PDX) · scheduled 11:55 AM – 1:03 PM
How UA644 performs
697 operations, 2024-03-07 to 2026-06-30.
UA644 arrived on time 83.5% of the time, against 75.7% for all DEN → PDX flights — this specific departure is 7.8 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 2.2 points better.
Source: US DOT Bureau of Transportation Statistics · 697 operations between 2024-03-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA644 | 83.5% | 0.00% | -6 min | 5.6% | 697 |
| United Airlines on DEN → PDX | 81.3% | 0.65% | -7 min | 6.4% | 5,544 |
| All DEN → PDX flights | 75.7% | 0.73% | -2 min | 6.7% | 13,334 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-03-07 to 2026-06-30
Other routes UA644 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 |
|---|---|---|---|
| DFW→DEN Dallas–Fort Worth to Denver | 2026-03-29 – 2026-06-30 | 62 | — |
| PHL→DEN Philadelphia to Denver | 2026-05-21 – 2026-05-31 | 11 | — |
| IAD→DEN Washington to Denver | 2026-04-30 – 2026-05-20 | 21 | — |
| SYR→DEN Syracuse to Denver | 2026-02-12 – 2026-03-04 | 21 | — |
| MIA→DEN Miami to Denver | 2025-08-01 – 2026-01-05 | 37 | — |
| BNA→IAH Nashville to Houston | 2025-10-26 – 2025-12-17 | 52 | — |
| BZN→DEN Bozeman to Denver | 2025-11-28 – 2025-11-28 | 1 | — |
| PDX→SFO Portland to San Francisco | 2024-06-27 – 2025-09-30 | 189 | 84.1% |
| SFO→EUG San Francisco to Eugene | 2025-08-19 – 2025-09-30 | 37 | — |
| LGA→DEN New York to Denver | 2025-03-30 – 2025-07-31 | 38 | — |
| SFO→PIT San Francisco to Pittsburgh | 2025-05-22 – 2025-06-25 | 33 | — |
| SFO→SAN San Francisco to San Diego | 2024-10-27 – 2024-12-02 | 36 | — |
| SAN→DEN San Diego to Denver | 2024-11-30 – 2024-12-01 | 2 | — |
| SFO→DEN San Francisco to Denver | 2024-08-19 – 2024-09-25 | 38 | — |
| EWR→TPA Newark to Tampa | 2024-02-15 – 2024-03-06 | 21 | — |
| EWR→BOS Newark to Boston | 2024-01-09 – 2024-02-14 | 37 | — |
| MCO→ORD Orlando to Chicago | 2023-12-21 – 2024-01-08 | 19 | — |
| EWR→SFO Newark to San Francisco | 2023-12-01 – 2023-12-20 | 20 | — |
| SFO→PDX San Francisco to Portland | 2023-12-01 – 2023-12-20 | 20 | — |
| IAH→CLE Houston to Cleveland | 2023-07-01 – 2023-11-30 | 152 | 77.5% |
| LAX→IAH Los Angeles to Houston | 2023-07-01 – 2023-09-04 | 66 | — |
| SFO→LAX San Francisco to Los Angeles | 2023-07-01 – 2023-07-31 | 26 | — |
Because the same number has served different journeys, the statistics above describe only the route UA644 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 697 records of UA644 operating DEN → PDX, 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.