Flight profile · Delta Air Lines
DL1225
Detroit (DTW) to Fort Myers (RSW) · scheduled 2:02 PM – 3:58 PM
How DL1225 performs
520 operations, 2025-01-06 to 2026-06-30.
DL1225 arrived on time 79.8% of the time, against 78.5% for all DTW → RSW flights — this specific departure is 1.3 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 520 operations between 2025-01-06 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1225 | 79.8% | 1.92% | -4 min | 6.3% | 520 |
| Delta Air Lines on DTW → RSW | 79.8% | 1.17% | -6 min | 7.0% | 3,768 |
| All DTW → RSW flights | 78.5% | 1.58% | -6 min | 7.7% | 5,630 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-01-06 to 2026-06-30
Other routes DL1225 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 |
|---|---|---|---|
| RSW→DTW Fort Myers to Detroit | 2025-01-06 – 2026-06-06 | 325 | 77.2% |
| GNV→ATL Gainesville to Atlanta | 2024-12-19 – 2026-01-04 | 34 | — |
| DTW→ATL Detroit to Atlanta | 2024-06-07 – 2024-12-16 | 121 | 80.0% |
| ATL→LEX Atlanta to Lexington | 2024-05-07 – 2024-06-06 | 26 | — |
| LEX→ATL Lexington to Atlanta | 2024-05-07 – 2024-06-06 | 26 | — |
| STL→ATL St. Louis to Atlanta | 2024-04-15 – 2024-05-06 | 22 | — |
| DTW→SYR Detroit to Syracuse | 2024-04-11 – 2024-04-13 | 3 | — |
| SYR→DTW Syracuse to Detroit | 2024-04-11 – 2024-04-13 | 3 | — |
| ATL→HSV Atlanta to Huntsville | 2024-03-10 – 2024-04-08 | 26 | — |
| HSV→ATL Huntsville to Atlanta | 2024-03-10 – 2024-04-08 | 26 | — |
| SLC→ORD Salt Lake City to Chicago | 2024-03-16 – 2024-04-06 | 4 | — |
| JAX→ATL Jacksonville to Atlanta | 2024-01-08 – 2024-03-09 | 62 | — |
| TVC→DTW Traverse City to Detroit | 2023-09-05 – 2024-01-07 | 125 | 92.0% |
| CHS→MSP Charleston to Minneapolis | 2023-07-01 – 2023-09-02 | 30 | — |
| MSP→CHS Minneapolis to Charleston | 2023-07-01 – 2023-09-02 | 30 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1225 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
36 min late
against a median of 4 min early
Percentiles over 520 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why DL1225 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for DL1225 on DTW → RSW. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 520 records of DL1225 operating DTW → RSW, 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.
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