Flight profile · Delta Air Lines
DL1211
Miami (MIA) to Atlanta (ATL) · scheduled 7:00 AM – 9:00 AM
How DL1211 performs
730 operations, 2024-06-07 to 2026-06-30.
DL1211 arrived on time 90.9% of the time, against 72.2% for all MIA → ATL flights — this specific departure is 18.7 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 16.9 points better.
Source: US DOT Bureau of Transportation Statistics · 730 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1211 | 90.9% | 1.92% | -7 min | 3.2% | 730 |
| Delta Air Lines on MIA → ATL | 74.0% | 1.05% | -3 min | 9.9% | 9,696 |
| All MIA → ATL flights | 72.2% | 1.25% | -3 min | 10.8% | 19,564 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL1211 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→MCO Atlanta to Orlando | 2024-05-07 – 2024-06-06 | 31 | — |
| MCO→ATL Orlando to Atlanta | 2024-05-07 – 2024-06-06 | 28 | — |
| MCO→BOS Orlando to Boston | 2024-04-09 – 2024-05-06 | 28 | — |
| MSP→FAR Minneapolis to Fargo | 2024-03-10 – 2024-04-08 | 22 | — |
| STL→DTW St. Louis to Detroit | 2024-01-08 – 2024-03-09 | 62 | — |
| DEN→SEA Denver to Seattle | 2023-12-16 – 2023-12-30 | 13 | — |
| SEA→DEN Seattle to Denver | 2023-12-16 – 2023-12-30 | 13 | — |
| FLL→JFK Fort Lauderdale to New York | 2023-09-05 – 2023-12-15 | 75 | — |
| JFK→FLL New York to Fort Lauderdale | 2023-09-05 – 2023-12-15 | 75 | — |
| MIA→MCO Miami to Orlando | 2023-10-09 – 2023-11-04 | 27 | — |
| BUF→BOS Buffalo to Boston | 2023-07-01 – 2023-08-06 | 29 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1211 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 730 records of DL1211 operating MIA → ATL, 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.