DL1186
DL1186 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Tulsa to Atlanta. Of 931 departures recorded from October 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 931 flights
- Average delay15.6 min
- July 202654▼ 12.9%vs July 2025
- Cancelled1.5%
- Legs flown under this number6
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 | 29 | 30 | ▲ 3.4% |
| February | 28 | 45 | ▲ 60.7% |
| March | 28 | 38 | ▲ 35.7% |
| April | 13 | 44 | ▲ 238.5% |
| May | 26 | 35 | ▲ 34.6% |
| June | 53 | 48 | ▼ 9.4% |
| July | 62 | 54 | ▼ 12.9% |
| August | 62 | – | – |
| September | 58 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 50 | – | – |
| Year to date (Jan–Jul) | 239 | 294 | ▲ 23.0% |
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 | 63.0% | 74.1% | ▲ 17.6% |
| February | 82.1% | 86.7% | ▲ 5.5% |
| March | 89.3% | 73.0% | ▼ 18.3% |
| April | 69.2% | 85.7% | ▲ 23.8% |
| May | 65.4% | 77.1% | ▲ 18.0% |
| June | 55.1% | 77.1% | ▲ 39.9% |
| July | 74.2% | 70.4% | ▼ 5.1% |
| August | 83.9% | – | – |
| September | 70.7% | – | – |
| October | 72.6% | – | in progress |
| November | 91.5% | – | – |
| December | 81.6% | – | – |
| Year-to-date average (Jan–Jul) | 71.2% | 77.7% | ▲ 9.2% |
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 | 3 | ▲ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 4 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 6 | 6 | 0.0% |
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 98.5% 917
- Cancelled 1.5% 14
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TUL ATL Tulsa International Airport – Hartsfield Jackson Atlanta International Airport | 1,082 | 15.9 min | 77.6% | 440 |
| ATL TUL Hartsfield Jackson Atlanta International Airport – Tulsa International Airport | 1,082 | 10.0 min | 79.9% | 336 |
| IAH ATL George Bush Intercontinental Airport – Hartsfield Jackson Atlanta International Airport | 1,108 | 13.1 min | 76.7% | 62 |
| MSP RSW Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Southwest Florida International Airport | 2,282 | 41.9 min | 77.1% | 36 |
| ATL PHL Hartsfield Jackson Atlanta International Airport – Philadelphia International Airport | 1,072 | 6.7 min | 77.4% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 24 | 24 | 100.0% | 0 |
| November 2024 | 38 | 38 | 94.7% | 0 |
| December 2024 | 44 | 44 | 68.2% | 0 |
| January 2025 | 29 | 27 | 63.0% | 2 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 28 | 28 | 89.3% | 0 |
| April 2025 | 13 | 13 | 69.2% | 0 |
| May 2025 | 26 | 26 | 65.4% | 0 |
| June 2025 | 53 | 49 | 55.1% | 4 |
| July 2025 | 62 | 62 | 74.2% | 0 |
| August 2025 | 62 | 62 | 83.9% | 0 |
| September 2025 | 58 | 58 | 70.7% | 0 |
| October 2025 | 62 | 62 | 72.6% | 0 |
| November 2025 | 60 | 59 | 91.5% | 1 |
| December 2025 | 50 | 49 | 81.6% | 1 |
| January 2026 | 30 | 27 | 74.1% | 3 |
| February 2026 | 45 | 45 | 86.7% | 0 |
| March 2026 | 38 | 37 | 73.0% | 1 |
| April 2026 | 44 | 42 | 85.7% | 2 |
| May 2026 | 35 | 35 | 77.1% | 0 |
| June 2026 | 48 | 48 | 77.1% | 0 |
| July 2026 | 54 | 54 | 70.4% | 0 |