Flight profile · Delta Air Lines
DL1721
Mobile (MOB) to Atlanta (ATL) · scheduled 6:00 AM – 8:20 AM
How DL1721 performs
429 operations, 2024-06-07 to 2026-06-30.
DL1721 arrived on time 92.6% of the time, against 86.5% for all MOB → ATL flights — this specific departure is 6.1 percentage points better than the route as a whole. Against Delta Air Lines’s own flights on this route it is 5.8 points better.
Source: US DOT Bureau of Transportation Statistics · 429 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL1721 | 92.6% | 2.80% | -14 min | 4.3% | 429 |
| Delta Air Lines on MOB → ATL | 86.7% | 2.20% | -13 min | 5.2% | 1,589 |
| All MOB → ATL flights | 86.5% | 1.49% | -13 min | 5.5% | 3,227 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL1721 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 |
|---|---|---|---|
| SJU→BOS San Juan to Boston | 2025-12-20 – 2026-01-04 | 16 | — |
| BOS→LGA Boston to New York | 2025-12-01 – 2025-12-01 | 1 | — |
| SFO→LAX San Francisco to Los Angeles | 2025-05-07 – 2025-06-07 | 32 | — |
| ORD→DTW Chicago to Detroit | 2025-03-09 – 2025-05-06 | 59 | — |
| DSM→ATL Des Moines to Atlanta | 2024-12-20 – 2025-01-05 | 17 | — |
| SFO→JFK San Francisco to New York | 2024-11-11 – 2024-12-18 | 38 | — |
| MSY→BOS New Orleans to Boston | 2024-09-09 – 2024-10-06 | 28 | — |
| SLC→LAX Salt Lake City to Los Angeles | 2023-07-01 – 2024-06-06 | 252 | 91.7% |
| CLE→MSP Cleveland to Minneapolis | 2024-04-22 – 2024-05-06 | 11 | — |
| MSP→CLE Minneapolis to Cleveland | 2024-04-22 – 2024-05-06 | 11 | — |
| DTW→GRR Detroit to Grand Rapids | 2024-04-15 – 2024-04-15 | 1 | — |
| GRR→DTW Grand Rapids to Detroit | 2024-04-15 – 2024-04-15 | 1 | — |
| MIA→SLC Miami to Salt Lake City | 2024-01-08 – 2024-03-09 | 62 | — |
Because the same number has served different journeys, the statistics above describe only the route DL1721 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 429 records of DL1721 operating MOB → 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.