Flight profile · Delta Air Lines
DL1529
Houston (IAH) to Detroit (DTW) · scheduled 4:50 PM – 8:43 PM
How DL1529 performs
404 operations, 2024-06-07 to 2026-06-30.
DL1529 arrived on time 76.9% of the time, against 80.4% for all IAH → DTW flights — this specific departure is 3.5 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 5.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 404 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1529 | 76.9% | 1.24% | -6 min | 10.8% | 404 |
| Delta Air Lines on IAH → DTW | 82.7% | 0.97% | -8 min | 6.5% | 3,928 |
| All IAH → DTW flights | 80.4% | 1.22% | -6 min | 7.3% | 6,873 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL1529 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 |
|---|---|---|---|
| DTW→IAH Detroit to Houston | 2025-06-08 – 2026-06-30 | 219 | 68.7% |
| MSY→JFK New Orleans to New York | 2026-05-07 – 2026-06-06 | 31 | — |
| CMH→ATL Columbus to Atlanta | 2026-02-12 – 2026-03-06 | 13 | — |
| ATL→CHA Atlanta to Chattanooga | 2026-01-06 – 2026-02-10 | 31 | — |
| SJC→ATL San Jose to Atlanta | 2025-12-20 – 2026-01-04 | 12 | — |
| DTW→TVC Detroit to Traverse City | 2025-06-14 – 2025-07-05 | 4 | — |
| TVC→DTW Traverse City to Detroit | 2025-06-14 – 2025-07-05 | 4 | — |
| CLT→MSP Charlotte to Minneapolis | 2024-11-16 – 2024-12-14 | 4 | — |
| ATL→GSO Atlanta to Greensboro | 2024-06-08 – 2024-07-06 | 8 | — |
| MSP→MCO Minneapolis to Orlando | 2023-07-01 – 2024-06-06 | 117 | 72.6% |
| DTW→TPA Detroit to Tampa | 2024-03-10 – 2024-05-06 | 58 | — |
| TPA→DTW Tampa to Detroit | 2024-03-10 – 2024-05-06 | 58 | — |
| IAH→MSP Houston to Minneapolis | 2024-01-09 – 2024-03-09 | 44 | — |
| MSP→IAH Minneapolis to Houston | 2024-01-27 – 2024-03-09 | 3 | — |
| MCO→MSP Orlando to Minneapolis | 2023-07-01 – 2024-01-07 | 69 | — |
| ATL→RDU Atlanta to Raleigh–Durham | 2023-10-09 – 2023-12-15 | 59 | — |
| RDU→ATL Raleigh–Durham to Atlanta | 2023-11-05 – 2023-12-15 | 35 | — |
| LAX→LAS Los Angeles to Las Vegas | 2023-10-29 – 2023-11-03 | 5 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1529 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 404 records of DL1529 operating IAH → 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.