Flight profile · Delta Air Lines
DL1323
Atlanta (ATL) to Miami (MIA) · scheduled 1:45 PM – 3:37 PM
How DL1323 performs
1,023 operations, 2023-09-05 to 2026-06-30.
DL1323 arrived on time 67.9% of the time, against 71.7% for all ATL → MIA flights — this specific departure is 3.8 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 3.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 1,023 operations between 2023-09-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1323 | 67.9% | 0.88% | 3 min | 10.5% | 1,023 |
| Delta Air Lines on ATL → MIA | 71.2% | 1.04% | 0 min | 9.1% | 9,693 |
| All ATL → MIA flights | 71.7% | 1.23% | -1 min | 10.2% | 19,572 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30
By day of week
Does DL1323 run worse on particular days?
Wednesday is historically the most reliable day and Sunday the least, a gap of 19.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-09-05 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes DL1323 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 |
|---|---|---|---|
| MIA→ATL Miami to Atlanta | 2023-09-05 – 2026-06-30 | 942 | 61.5% |
| ECP→ATL Panama City Beach to Atlanta | 2023-07-01 – 2023-09-04 | 62 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1323 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 1,023 records of DL1323 operating ATL → MIA, 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.