Flight profile · Delta Air Lines
DL566
St. Louis (STL) to Atlanta (ATL) · scheduled 7:10 AM – 9:55 AM
How DL566 performs
277 operations, 2024-12-19 to 2026-06-30.
DL566 arrived on time 87.7% of the time, against 85.3% for all STL → ATL flights — this specific departure is 2.4 percentage points better than the route as a whole.
Source: US DOT Bureau of Transportation Statistics · 277 operations between 2024-12-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| DL566 | 87.7% | 2.89% | -15 min | 2.6% | 277 |
| Delta Air Lines on STL → ATL | 88.5% | 1.18% | -12 min | 4.0% | 6,765 |
| All STL → ATL flights | 85.3% | 1.09% | -10 min | 4.6% | 10,709 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-19 to 2026-06-30
Other routes DL566 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→STL Atlanta to St. Louis | 2024-12-19 – 2026-06-30 | 120 | 83.5% |
| LAS→JFK Las Vegas to New York | 2024-11-11 – 2026-06-06 | 68 | — |
| SMF→DTW Sacramento to Detroit | 2025-06-08 – 2025-12-01 | 167 | 88.6% |
| DTW→SMF Detroit to Sacramento | 2025-08-11 – 2025-12-01 | 105 | 92.4% |
| TLH→ATL Tallahassee to Atlanta | 2025-05-07 – 2025-06-07 | 32 | — |
| SFO→BOS San Francisco to Boston | 2025-04-14 – 2025-05-05 | 13 | — |
| MCI→LGA Kansas City to New York | 2024-09-09 – 2024-11-09 | 50 | — |
| DFW→LGA Dallas–Fort Worth to New York | 2024-04-09 – 2024-09-08 | 91 | 77.6% |
| MCO→CVG Orlando to Cincinnati / Covington | 2024-06-07 – 2024-07-07 | 31 | — |
| ATL→SMF Atlanta to Sacramento | 2023-07-05 – 2024-06-06 | 69 | — |
| MCI→MSP Kansas City to Minneapolis | 2024-05-11 – 2024-06-01 | 5 | — |
| MSP→MCI Minneapolis to Kansas City | 2024-05-11 – 2024-06-01 | 5 | — |
| LGA→DFW New York to Dallas–Fort Worth | 2024-04-09 – 2024-05-06 | 28 | — |
| SMF→ATL Sacramento to Atlanta | 2023-07-05 – 2024-04-08 | 126 | 90.5% |
| BOS→PBI Boston to West Palm Beach | 2024-03-16 – 2024-04-06 | 4 | — |
| LAS→ATL Las Vegas to Atlanta | 2024-01-08 – 2024-03-09 | 59 | — |
| SAN→MSP San Diego to Minneapolis | 2023-12-09 – 2023-12-09 | 1 | — |
| SEA→ATL Seattle to Atlanta | 2023-10-28 – 2023-11-04 | 8 | — |
Because the same number has served different journeys, the statistics above describe only the route DL566 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 277 records of DL566 operating STL → 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.