Flight profile · Delta Air Lines
DL1665
Detroit (DTW) to Chicago (ORD) · scheduled 8:00 PM – 9:05 PM
How DL1665 performs
676 operations, 2024-06-07 to 2026-06-30.
DL1665 arrived on time 73.3% of the time, against 77.8% for all DTW → ORD flights — this specific departure is 4.5 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 4.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 676 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1665 | 73.3% | 1.92% | -5 min | 11.9% | 676 |
| Delta Air Lines on DTW → ORD | 78.1% | 1.14% | -6 min | 9.0% | 4,490 |
| All DTW → ORD flights | 77.8% | 1.84% | -6 min | 9.0% | 16,884 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL1665 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 |
|---|---|---|---|
| ATL→TPA Atlanta to Tampa | 2025-11-09 – 2025-12-19 | 40 | — |
| TPA→ATL Tampa to Atlanta | 2025-11-09 – 2025-12-19 | 40 | — |
| ORD→DTW Chicago to Detroit | 2025-10-06 – 2025-11-07 | 32 | — |
| SLC→DFW Salt Lake City to Dallas–Fort Worth | 2023-07-01 – 2024-06-06 | 182 | 71.5% |
| SLC→MIA Salt Lake City to Miami | 2024-04-09 – 2024-05-06 | 28 | — |
| SLC→MSP Salt Lake City to Minneapolis | 2024-01-13 – 2024-03-09 | 12 | — |
| MKE→MSP Milwaukee to Minneapolis | 2024-01-08 – 2024-02-01 | 21 | — |
| MSP→MKE Minneapolis to Milwaukee | 2024-01-08 – 2024-02-01 | 21 | — |
| DFW→SLC Dallas–Fort Worth to Salt Lake City | 2023-07-01 – 2024-01-07 | 113 | 78.6% |
| ALB→ATL Albany to Atlanta | 2023-11-01 – 2023-11-03 | 3 | — |
| ATL→ORF Atlanta to Norfolk | 2023-10-09 – 2023-10-27 | 11 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1665 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 676 records of DL1665 operating DTW → ORD, 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.