Flight profile · Delta Air Lines
DL2879
Atlanta (ATL) to Chicago (ORD) · scheduled 5:25 PM – 6:49 PM
How DL2879 performs
856 operations, 2023-07-03 to 2026-06-30.
DL2879 arrived on time 55.4% of the time, against 74.3% for all ATL → ORD flights — this specific departure is 18.9 percentage points worse than the route as a whole. Against Delta Air Lines’s own flights on this route it is 17.7 points worse.
Source: US DOT Bureau of Transportation Statistics · 856 operations between 2023-07-03 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL2879 | 55.4% | 1.52% | 11 min | 12.9% | 856 |
| Delta Air Lines on ATL → ORD | 73.1% | 1.34% | 0 min | 8.0% | 7,474 |
| All ATL → ORD flights | 74.3% | 1.63% | -3 min | 9.3% | 17,984 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-03 to 2026-06-30
By day of week
Does DL2879 run worse on particular days?
Wednesday is historically the most reliable day and Friday the least, a gap of 17.5 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-03 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes DL2879 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 |
|---|---|---|---|
| ORD→ATL Chicago to Atlanta | 2023-09-10 – 2026-06-05 | 435 | 66.0% |
| ATL→CAE Atlanta to Columbia | 2025-01-20 – 2025-01-31 | 4 | — |
| CAE→ATL Columbia to Atlanta | 2025-01-20 – 2025-01-31 | 4 | — |
| DTW→GSP Detroit to Greenville/Greer/Spartanburg | 2024-06-08 – 2024-06-30 | 5 | — |
| MSP→AUS Minneapolis to Austin | 2024-05-07 – 2024-06-06 | 31 | — |
| BIS→MSP Bismarck to Minneapolis | 2024-01-07 – 2024-01-07 | 1 | — |
| LGA→BUF New York to Buffalo | 2023-12-16 – 2024-01-06 | 22 | — |
| ATL→SFO Atlanta to San Francisco | 2023-11-06 – 2023-12-13 | 15 | — |
| ORD→SEA Chicago to Seattle | 2023-11-24 – 2023-11-24 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route DL2879 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 856 records of DL2879 operating ATL → ORD, 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.