Flight profile · Delta Air Lines
DL1646
Atlanta (ATL) to Detroit (DTW) · scheduled 7:25 AM – 9:30 AM
How DL1646 performs
1,089 operations, 2023-07-01 to 2026-06-30.
DL1646 arrived on time 89.2% of the time, against 78.7% for all ATL → DTW flights — this specific departure is 10.5 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 8.4 points better.
Source: US DOT Bureau of Transportation Statistics · 1,089 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1646 | 89.2% | 0.46% | -6 min | 2.4% | 1,089 |
| Delta Air Lines on ATL → DTW | 80.8% | 0.48% | -4 min | 5.7% | 11,020 |
| All ATL → DTW flights | 78.7% | 0.77% | -4 min | 6.8% | 14,999 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does DL1646 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 9.7 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 1,089 records of DL1646 operating ATL → DTW, 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.