DL1664
DL1664 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Charleston to Atlanta. Of 597 departures recorded from October 2024 to July 2026, 91.3% left on time, according to the US BTS.
- On-time departures91.3%of 597 flights
- Average delay2.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.0%
- 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 | 17 | 30 | ▲ 76.5% |
| February | 26 | 28 | ▲ 7.7% |
| March | 31 | 7 | ▼ 77.4% |
| April | 30 | 18 | ▼ 40.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 196 | 175 | ▼ 10.7% |
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 | 73.3% | 86.2% | ▲ 17.6% |
| February | 100.0% | 100.0% | 0.0% |
| March | 96.7% | 83.3% | ▼ 13.8% |
| April | 93.3% | 77.8% | ▼ 16.7% |
| May | 90.3% | 100.0% | ▲ 10.7% |
| June | 88.9% | 90.0% | ▲ 1.2% |
| July | 90.3% | 90.0% | ▼ 0.4% |
| August | 96.8% | – | – |
| September | 100.0% | – | – |
| October | 90.3% | – | in progress |
| November | 96.7% | – | – |
| December | 69.2% | – | – |
| Year-to-date average (Jan–Jul) | 90.4% | 89.6% | ▼ 0.9% |
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 | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 3 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 6 | 4 | ▼ 33.3% |
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 98.0% 585
- Cancelled 2.0% 12
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CHS ATL Charleston International Airport – Hartsfield Jackson Atlanta International Airport | 416 | 0.8 min | 93.6% | 574 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 26 | 26 | 76.9% | 0 |
| January 2025 | 17 | 15 | 73.3% | 2 |
| February 2025 | 26 | 26 | 100.0% | 0 |
| March 2025 | 31 | 30 | 96.7% | 1 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 27 | 88.9% | 3 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 31 | 31 | 96.8% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 30 | 30 | 96.7% | 0 |
| December 2025 | 28 | 26 | 69.2% | 2 |
| January 2026 | 30 | 29 | 86.2% | 1 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 7 | 6 | 83.3% | 1 |
| April 2026 | 18 | 18 | 77.8% | 0 |
| May 2026 | 31 | 30 | 100.0% | 1 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 30 | 90.0% | 1 |