Flight profile · Delta Air Lines
DL840
Denver (DEN) to Atlanta (ATL) · scheduled 4:43 PM – 9:50 PM
How DL840 performs
668 operations, 2023-07-05 to 2026-06-30.
DL840 arrived on time 76.2% of the time, against 78.7% for all DEN → ATL flights — this specific departure is 2.5 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 8.0 points worse.
Source: US DOT Bureau of Transportation Statistics · 668 operations between 2023-07-05 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL840 | 76.2% | 1.35% | -7 min | 9.5% | 668 |
| Delta Air Lines on DEN → ATL | 84.2% | 0.84% | -9 min | 5.1% | 8,492 |
| All DEN → ATL flights | 78.7% | 0.80% | -5 min | 6.6% | 17,593 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-05 to 2026-06-30
Other routes DL840 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→DEN Atlanta to Denver | 2023-07-01 – 2026-06-06 | 327 | 81.9% |
| TPA→LGA Tampa to New York | 2024-12-21 – 2026-01-04 | 28 | — |
| FLL→JFK Fort Lauderdale to New York | 2025-01-06 – 2025-03-07 | 35 | — |
| JFK→SFO New York to San Francisco | 2024-12-19 – 2024-12-20 | 2 | — |
| SFO→JFK San Francisco to New York | 2024-12-19 – 2024-12-20 | 2 | — |
| DTW→RSW Detroit to Fort Myers | 2024-03-10 – 2024-04-08 | 30 | — |
| RSW→DTW Fort Myers to Detroit | 2024-03-10 – 2024-04-08 | 30 | — |
| BOS→SFO Boston to San Francisco | 2023-11-03 – 2023-11-04 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route DL840 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 668 records of DL840 operating DEN → 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.