DL1663
DL1663 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Atlanta to Charleston. Of 473 departures recorded from October 2024 to July 2026, 73.0% left on time, according to the US BTS.
- On-time departures73.0%of 473 flights
- Average delay13.3 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.3%
- Legs flown under this number5
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 | 11 | 13 | ▲ 18.2% |
| February | 14 | 15 | ▲ 7.1% |
| March | 21 | 28 | ▲ 33.3% |
| April | 26 | 30 | ▲ 15.4% |
| May | 19 | 31 | ▲ 63.2% |
| June | 27 | 30 | ▲ 11.1% |
| July | 31 | 31 | 0.0% |
| August | 10 | – | – |
| September | 1 | – | – |
| October | 24 | – | in progress |
| November | 29 | – | – |
| December | 18 | – | – |
| Year to date (Jan–Jul) | 149 | 178 | ▲ 19.5% |
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 | 54.6% | 76.9% | ▲ 41.0% |
| February | 71.4% | 86.7% | ▲ 21.3% |
| March | 81.0% | 65.4% | ▼ 19.2% |
| April | 69.2% | 93.3% | ▲ 34.8% |
| May | 63.2% | 74.2% | ▲ 17.5% |
| June | 56.0% | 70.0% | ▲ 25.0% |
| July | 61.3% | 48.3% | ▼ 21.2% |
| August | 60.0% | – | – |
| September | 100.0% | – | – |
| October | 79.2% | – | in progress |
| November | 86.2% | – | – |
| December | 61.1% | – | – |
| Year-to-date average (Jan–Jul) | 65.2% | 73.5% | ▲ 12.7% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| 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 98.7% 467
- Cancelled 1.3% 6
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 CHS Hartsfield Jackson Atlanta International Airport – Charleston International Airport | 416 | 14.3 min | 72.0% | 399 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 8.9 min | 77.5% | 71 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 29 | 29 | 82.8% | 0 |
| December 2024 | 16 | 16 | 93.8% | 0 |
| January 2025 | 11 | 11 | 54.6% | 0 |
| February 2025 | 14 | 14 | 71.4% | 0 |
| March 2025 | 21 | 21 | 81.0% | 0 |
| April 2025 | 26 | 26 | 69.2% | 0 |
| May 2025 | 19 | 19 | 63.2% | 0 |
| June 2025 | 27 | 25 | 56.0% | 2 |
| July 2025 | 31 | 31 | 61.3% | 0 |
| August 2025 | 10 | 10 | 60.0% | 0 |
| September 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 24 | 24 | 79.2% | 0 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 18 | 18 | 61.1% | 0 |
| January 2026 | 13 | 13 | 76.9% | 0 |
| February 2026 | 15 | 15 | 86.7% | 0 |
| March 2026 | 28 | 26 | 65.4% | 2 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 74.2% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 29 | 48.3% | 2 |