Flight profile · Delta Air Lines
DL1135
Detroit (DTW) to Phoenix (PHX) · scheduled 4:10 PM – 5:45 PM
How DL1135 performs
794 operations, 2023-07-01 to 2026-06-30.
DL1135 arrived on time 69.8% of the time, against 79.0% for all DTW → PHX flights — this specific departure is 9.2 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 8.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 794 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1135 | 69.8% | 0.76% | 0 min | 11.8% | 794 |
| Delta Air Lines on DTW → PHX | 77.8% | 0.57% | -4 min | 7.3% | 4,063 |
| All DTW → PHX flights | 79.0% | 0.74% | -5 min | 7.3% | 7,012 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes DL1135 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 |
|---|---|---|---|
| EWR→SLC Newark to Salt Lake City | 2025-08-11 – 2025-12-19 | 128 | 71.9% |
| LAS→MSP Las Vegas to Minneapolis | 2024-01-08 – 2024-03-09 | 62 | — |
| ILM→ATL Wilmington to Atlanta | 2023-11-05 – 2023-12-15 | 36 | — |
| ATL→ILM Atlanta to Wilmington | 2023-12-07 – 2023-12-15 | 9 | — |
| SYR→DTW Syracuse to Detroit | 2023-10-09 – 2023-11-04 | 27 | — |
| MCI→ATL Kansas City to Atlanta | 2023-09-09 – 2023-10-08 | 10 | — |
| ATL→MCI Atlanta to Kansas City | 2023-09-16 – 2023-10-08 | 8 | — |
| CHS→MSP Charleston to Minneapolis | 2023-09-13 – 2023-10-06 | 8 | — |
| MSP→CHS Minneapolis to Charleston | 2023-09-13 – 2023-10-06 | 8 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1135 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 794 records of DL1135 operating DTW → PHX, 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.