Flight profile · Delta Air Lines
DL3171
Atlanta (ATL) to Huntsville (HSV) · scheduled 6:20 PM – 6:20 PM
How DL3171 performs
392 operations, 2024-06-07 to 2026-06-30.
DL3171 arrived on time 80.9% of the time, against 84.7% for all ATL → HSV 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 3.6 points worse.
Source: US DOT Bureau of Transportation Statistics · 392 operations between 2024-06-07 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL3171 | 80.9% | 1.02% | -10 min | 8.0% | 392 |
| Delta Air Lines on ATL → HSV | 84.5% | 1.47% | -9 min | 5.4% | 6,395 |
| All ATL → HSV flights | 84.7% | 1.46% | -9 min | 5.3% | 6,993 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-06-07 to 2026-06-30
Other routes DL3171 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 |
|---|---|---|---|
| HSV→ATL Huntsville to Atlanta | 2024-06-07 – 2026-06-26 | 138 | 80.1% |
| ATL→JAN Atlanta to Jackson | 2025-10-06 – 2025-12-19 | 73 | — |
| JAN→ATL Jackson to Atlanta | 2025-10-06 – 2025-12-19 | 73 | — |
Because the same number has served different journeys, the statistics above describe only the route DL3171 currently operates. Blending them would produce an average of two different flights.
Why DL3171 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
weather severe enough to stop this flight specifically
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for DL3171 on ATL → HSV. 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 ATL → HSV
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| DL3022 | Delta Air Lines | 81.6% | 10 min early | 703 |
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 392 records of DL3171 operating ATL → HSV, 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.