DL1631
DL1631 (Delta Air Lines) is a multi-stop service on 9 routes, busiest Fort Lauderdale to Atlanta. Of 660 departures recorded from November 2024 to July 2026, 83.2% left on time, according to the US BTS.
- On-time departures83.2%of 660 flights
- Average delay8.7 min
- July 202631▲ 520.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number9
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 | 13 | 35 | ▲ 169.2% |
| February | 4 | 19 | ▲ 375.0% |
| March | 25 | 27 | ▲ 8.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 9 | 30 | ▲ 233.3% |
| July | 5 | 31 | ▲ 520.0% |
| August | 59 | – | – |
| September | 50 | – | – |
| October | 60 | – | in progress |
| November | 50 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 117 | 203 | ▲ 73.5% |
according to the US BTS · November 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 | 69.2% | 79.4% | ▲ 14.7% |
| February | 100.0% | 94.7% | ▼ 5.3% |
| March | 80.0% | 84.6% | ▲ 5.8% |
| April | 89.7% | 86.7% | ▼ 3.3% |
| May | 93.6% | 82.1% | ▼ 12.2% |
| June | 88.9% | 80.0% | ▼ 10.0% |
| July | 80.0% | 51.7% | ▼ 35.4% |
| August | 88.1% | – | – |
| September | 80.0% | – | – |
| October | 80.0% | – | in progress |
| November | 93.8% | – | – |
| December | 87.5% | – | – |
| Year-to-date average (Jan–Jul) | 85.9% | 79.9% | ▼ 7.0% |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 3 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
according to the US BTS · November 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 98.2% 648
- Cancelled 1.8% 12
Share of all recorded flights in the period, all legs. · Nov 11, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| FLL ATL Fort Lauderdale Hollywood International Airport – Hartsfield Jackson Atlanta International Airport | 936 | 9.7 min | 86.2% | 236 |
| SLC SBA Salt Lake City International Airport – Santa Barbara Municipal Airport | 989 | 4.8 min | 82.4% | 126 |
| SBA SLC Santa Barbara Municipal Airport – Salt Lake City International Airport | 989 | -2.2 min | 88.8% | 126 |
| ATL MIA Hartsfield Jackson Atlanta International Airport – Miami International Airport | 959 | 37.0 min | 62.3% | 55 |
| MSY BOS Louis Armstrong New Orleans International Airport – Boston Logan International Airport | 2,200 | 14.6 min | 78.4% | 37 |
| SAV ATL Savannah Hilton Head International Airport – Hartsfield Jackson Atlanta International Airport | 345 | 12.0 min | 81.8% | 34 |
| ATL SAV Hartsfield Jackson Atlanta International Airport – Savannah Hilton Head International Airport | 345 | 5.9 min | 81.8% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 19 | 19 | 79.0% | 0 |
| December 2024 | 44 | 44 | 79.6% | 0 |
| January 2025 | 13 | 13 | 69.2% | 0 |
| February 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 25 | 25 | 80.0% | 0 |
| April 2025 | 30 | 29 | 89.7% | 1 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 9 | 9 | 88.9% | 0 |
| July 2025 | 5 | 5 | 80.0% | 0 |
| August 2025 | 59 | 59 | 88.1% | 0 |
| September 2025 | 50 | 50 | 80.0% | 0 |
| October 2025 | 60 | 60 | 80.0% | 0 |
| November 2025 | 50 | 48 | 93.8% | 2 |
| December 2025 | 58 | 56 | 87.5% | 2 |
| January 2026 | 35 | 34 | 79.4% | 1 |
| February 2026 | 19 | 19 | 94.7% | 0 |
| March 2026 | 27 | 26 | 84.6% | 1 |
| April 2026 | 30 | 30 | 86.7% | 0 |
| May 2026 | 31 | 28 | 82.1% | 3 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 29 | 51.7% | 2 |