DL1477
DL1477 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Atlanta to Chicago. Of 1,231 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 1,231 flights
- Average delay15.5 min
- July 202661▼ 1.6%vs July 2025
- Cancelled1.1%
- Legs flown under this number2
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 60 | 56 | ▼ 6.7% |
| February | 56 | 56 | 0.0% |
| March | 62 | 38 | ▼ 38.7% |
| April | 60 | 30 | ▼ 50.0% |
| May | 62 | 56 | ▼ 9.7% |
| June | 60 | 60 | 0.0% |
| July | 62 | 61 | ▼ 1.6% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 60 | – | in progress |
| November | 56 | – | – |
| December | 56 | – | – |
| Year to date (Jan–Jul) | 422 | 357 | ▼ 15.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.9% | 69.1% | ▼ 8.9% |
| February | 76.8% | 85.7% | ▲ 11.6% |
| March | 80.7% | 64.9% | ▼ 19.6% |
| April | 46.7% | 73.3% | ▲ 57.1% |
| May | 72.6% | 80.0% | ▲ 10.2% |
| June | 63.3% | 78.0% | ▲ 23.1% |
| July | 74.2% | 70.5% | ▼ 5.0% |
| August | 85.5% | – | – |
| September | 91.7% | – | – |
| October | 86.7% | – | in progress |
| November | 68.6% | – | – |
| December | 64.8% | – | – |
| Year-to-date average (Jan–Jul) | 70.0% | 74.5% | ▲ 6.4% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 5 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 100.0% |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.9% 1,218
- Cancelled 1.1% 13
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL ORD Hartsfield Jackson Atlanta International Airport – Chicago O'Hare International Airport | 976 | 9.7 min | 80.0% | 647 |
| ORD ATL Chicago O'Hare International Airport – Hartsfield Jackson Atlanta International Airport | 976 | 22.0 min | 71.2% | 584 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 38 | 38 | 81.6% | 0 |
| November 2024 | 58 | 58 | 84.5% | 0 |
| December 2024 | 62 | 62 | 87.1% | 0 |
| January 2025 | 60 | 58 | 75.9% | 2 |
| February 2025 | 56 | 56 | 76.8% | 0 |
| March 2025 | 62 | 62 | 80.7% | 0 |
| April 2025 | 60 | 60 | 46.7% | 0 |
| May 2025 | 62 | 62 | 72.6% | 0 |
| June 2025 | 60 | 60 | 63.3% | 0 |
| July 2025 | 62 | 62 | 74.2% | 0 |
| August 2025 | 62 | 62 | 85.5% | 0 |
| September 2025 | 60 | 60 | 91.7% | 0 |
| October 2025 | 60 | 60 | 86.7% | 0 |
| November 2025 | 56 | 51 | 68.6% | 5 |
| December 2025 | 56 | 54 | 64.8% | 2 |
| January 2026 | 56 | 55 | 69.1% | 1 |
| February 2026 | 56 | 56 | 85.7% | 0 |
| March 2026 | 38 | 37 | 64.9% | 1 |
| April 2026 | 30 | 30 | 73.3% | 0 |
| May 2026 | 56 | 55 | 80.0% | 1 |
| June 2026 | 60 | 59 | 78.0% | 1 |
| July 2026 | 61 | 61 | 70.5% | 0 |