Flight profile · Delta Air Lines
DL1261
Miami (MIA) to Atlanta (ATL) · scheduled 8:10 AM – 10:20 AM
How DL1261 performs
754 operations, 2024-06-07 to 2026-06-30.
DL1261 arrived on time 88.2% of the time, against 72.2% for all MIA → ATL flights — this specific departure is 16.0 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 14.2 points better.
Source: US DOT Bureau of Transportation Statistics · 754 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1261 | 88.2% | 0.93% | -9 min | 5.4% | 754 |
| 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 DL1261 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→SDF Atlanta to Louisville | 2024-05-07 – 2024-06-06 | 26 | — |
| SDF→ATL Louisville to Atlanta | 2024-05-07 – 2024-06-06 | 26 | — |
| SLC→BZN Salt Lake City to Bozeman | 2024-05-11 – 2024-06-01 | 5 | — |
| MSP→FCA Minneapolis to Kalispell | 2024-04-09 – 2024-05-06 | 28 | — |
| MSP→PHX Minneapolis to Phoenix | 2023-12-21 – 2024-04-08 | 38 | — |
| GEG→SLC Spokane to Salt Lake City | 2024-01-08 – 2024-03-08 | 47 | — |
| SLC→GEG Salt Lake City to Spokane | 2024-01-08 – 2024-03-08 | 47 | — |
| ATL→LEX Atlanta to Lexington | 2024-01-06 – 2024-01-07 | 2 | — |
| ATL→GSP Atlanta to Greenville/Greer/Spartanburg | 2023-12-31 – 2023-12-31 | 1 | — |
| GSP→ATL Greenville/Greer/Spartanburg to Atlanta | 2023-12-31 – 2023-12-31 | 1 | — |
| BOS→LGA Boston to New York | 2023-12-16 – 2023-12-16 | 1 | — |
| MCI→SLC Kansas City to Salt Lake City | 2023-12-07 – 2023-12-15 | 8 | — |
| BOS→DFW Boston to Dallas–Fort Worth | 2023-12-02 – 2023-12-09 | 2 | — |
| DFW→BOS Dallas–Fort Worth to Boston | 2023-12-02 – 2023-12-09 | 2 | — |
| ATL→TPA Atlanta to Tampa | 2023-12-04 – 2023-12-06 | 3 | — |
| TPA→ATL Tampa to Atlanta | 2023-12-05 – 2023-12-06 | 2 | — |
| MSP→RDU Minneapolis to Raleigh–Durham | 2023-09-10 – 2023-11-27 | 47 | — |
| RDU→MSP Raleigh–Durham to Minneapolis | 2023-09-10 – 2023-11-27 | 39 | — |
| LGA→MCO New York to Orlando | 2023-09-09 – 2023-10-07 | 5 | — |
| AVL→MSP Asheville to Minneapolis | 2023-07-10 – 2023-09-04 | 25 | — |
| MSP→AVL Minneapolis to Asheville | 2023-07-10 – 2023-09-04 | 25 | — |
| ATL→MCO Atlanta to Orlando | 2023-07-05 – 2023-07-09 | 2 | — |
| MCO→ATL Orlando to Atlanta | 2023-07-05 – 2023-07-09 | 2 | — |
| ATL→CHA Atlanta to Chattanooga | 2023-07-03 – 2023-07-04 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1261 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.
18 min late
against a median of 9 min early
Percentiles over 754 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why DL1261 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 DL1261 on MIA → ATL. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on MIA → ATL
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL1249 | Delta Air Lines | 92.3% | 11 min early | 662 |
| DL1211 | Delta Air Lines | 90.9% | 7 min early | 730 |
| AA1046 | American Airlines | 83.1% | 7 min early | 625 |
| DL2836 | Delta Air Lines | 78.4% | 5 min early | 910 |
| F92483 | Frontier Airlines | 76.8% | 6 min early | 778 |
| DL1510 | Delta Air Lines | 73.7% | 3 min early | 1,096 |
| DL1332 | Delta Air Lines | 69.2% | 1 min early | 985 |
| DL1579 | Delta Air Lines | 65.1% | 1 min late | 649 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 754 records of DL1261 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.
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