DL1637
DL1637 (Delta Air Lines) is a multi-stop service on 4 routes, busiest Wichita to Atlanta. Of 1,178 departures recorded from October 2024 to July 2026, 86.0% left on time, according to the US BTS.
- On-time departures86.0%of 1,178 flights
- Average delay5.0 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number4
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 8 | 60 | ▲ 650.0% |
| February | – | 56 | – |
| March | 46 | 62 | ▲ 34.8% |
| April | 56 | 60 | ▲ 7.1% |
| May | 60 | 62 | ▲ 3.3% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 62 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 90.9% | ▼ 9.1% |
| February | – | 91.1% | – |
| March | 71.7% | 78.3% | ▲ 9.2% |
| April | 94.6% | 86.7% | ▼ 8.4% |
| May | 73.3% | 90.3% | ▲ 23.2% |
| June | 76.7% | 84.5% | ▲ 10.2% |
| July | 91.9% | 88.7% | ▼ 3.5% |
| August | 88.7% | – | – |
| September | 88.3% | – | – |
| October | 90.3% | – | in progress |
| November | 73.3% | – | – |
| December | 83.9% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 5 | – |
| February | – | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 99.2% 1,169
- Cancelled 0.8% 9
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ICT ATL Wichita Dwight D. Eisenhower National Airport – Hartsfield Jackson Atlanta International Airport | 1,255 | 8.7 min | 81.8% | 559 |
| ATL ICT Hartsfield Jackson Atlanta International Airport – Wichita Dwight D. Eisenhower National Airport | 1,255 | 2.4 min | 88.6% | 559 |
| GSP ATL Greenville-Spartanburg International Airport – Hartsfield Jackson Atlanta International Airport | 247 | -7.2 min | 100.0% | 30 |
| ATL GSP Hartsfield Jackson Atlanta International Airport – Greenville-Spartanburg International Airport | 247 | -3.8 min | 100.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 92.5% | 0 |
| November 2024 | 60 | 60 | 93.3% | 0 |
| December 2024 | 58 | 58 | 87.9% | 0 |
| January 2025 | 8 | 8 | 100.0% | 0 |
| March 2025 | 46 | 46 | 71.7% | 0 |
| April 2025 | 56 | 56 | 94.6% | 0 |
| May 2025 | 60 | 60 | 73.3% | 0 |
| June 2025 | 60 | 60 | 76.7% | 0 |
| July 2025 | 62 | 62 | 91.9% | 0 |
| August 2025 | 62 | 62 | 88.7% | 0 |
| September 2025 | 60 | 60 | 88.3% | 0 |
| October 2025 | 62 | 62 | 90.3% | 0 |
| November 2025 | 60 | 60 | 73.3% | 0 |
| December 2025 | 62 | 62 | 83.9% | 0 |
| January 2026 | 60 | 55 | 90.9% | 5 |
| February 2026 | 56 | 56 | 91.1% | 0 |
| March 2026 | 62 | 60 | 78.3% | 2 |
| April 2026 | 60 | 60 | 86.7% | 0 |
| May 2026 | 62 | 62 | 90.3% | 0 |
| June 2026 | 60 | 58 | 84.5% | 2 |
| July 2026 | 62 | 62 | 88.7% | 0 |