Flight profile · Delta Air Lines
DL1644
Detroit (DTW) to Denver (DEN) · scheduled 8:25 PM – 10:38 PM
How DL1644 performs
526 operations, 2023-09-10 to 2026-06-26.
DL1644 arrived on time 68.4% of the time, against 80.1% for all DTW → DEN flights — this specific departure is 11.7 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 9.6 points worse.
Source: US DOT Bureau of Transportation Statistics · 526 operations between 2023-09-10 to 2026-06-26
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1644 | 68.4% | 0.57% | -1 min | 11.1% | 526 |
| Delta Air Lines on DTW → DEN | 78.0% | 0.47% | -6 min | 6.3% | 3,831 |
| All DTW → DEN flights | 80.1% | 0.57% | -6 min | 5.9% | 9,098 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-10 to 2026-06-26
Other routes DL1644 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 |
|---|---|---|---|
| CLT→ATL Charlotte to Atlanta | 2026-03-08 – 2026-04-12 | 36 | — |
| AUS→ATL Austin to Atlanta | 2026-02-12 – 2026-03-06 | 19 | — |
| ATL→AUS Atlanta to Austin | 2026-02-12 – 2026-03-06 | 19 | — |
| RIC→DTW Richmond to Detroit | 2026-01-20 – 2026-02-10 | 19 | — |
| GPT→ATL Gulfport to Atlanta | 2024-12-19 – 2026-01-04 | 26 | — |
| ATL→GPT Atlanta to Gulfport | 2024-12-19 – 2026-01-04 | 22 | — |
| RSW→DTW Fort Myers to Detroit | 2026-01-03 – 2026-01-03 | 1 | — |
| MSP→LGA Minneapolis to New York | 2024-11-29 – 2024-11-29 | 1 | — |
| RDU→MIA Raleigh–Durham to Miami | 2024-05-07 – 2024-06-06 | 31 | — |
| SLC→PHL Salt Lake City to Philadelphia | 2024-01-15 – 2024-03-08 | 21 | — |
| SEA→PHX Seattle to Phoenix | 2024-02-18 – 2024-02-18 | 1 | — |
| ATL→ALB Atlanta to Albany | 2023-10-14 – 2023-11-04 | 10 | — |
| ALB→ATL Albany to Atlanta | 2023-10-14 – 2023-11-04 | 7 | — |
| DTW→SEA Detroit to Seattle | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1644 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 526 records of DL1644 operating DTW → 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.