DL1155
DL1155 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Atlanta to Nashville. Of 1,188 departures recorded from October 2024 to July 2026, 84.8% left on time, according to the US BTS.
- On-time departures84.8%of 1,188 flights
- Average delay7.6 min
- July 202662▲ 0.0%vs July 2025
- Cancelled1.2%
- 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 | 62 | 34 | ▼ 45.2% |
| February | 56 | 25 | ▼ 55.4% |
| March | 60 | 54 | ▼ 10.0% |
| April | 43 | 60 | ▲ 39.5% |
| May | 56 | 62 | ▲ 10.7% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 59 | – | – |
| Year to date (Jan–Jul) | 399 | 357 | ▼ 10.5% |
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 | 78.3% | 90.6% | ▲ 15.7% |
| February | 76.8% | 87.0% | ▲ 13.2% |
| March | 90.0% | 82.7% | ▼ 8.1% |
| April | 76.7% | 91.4% | ▲ 19.1% |
| May | 78.6% | 95.2% | ▲ 21.1% |
| June | 86.7% | 91.7% | ▲ 5.8% |
| July | 90.3% | 79.0% | ▼ 12.5% |
| August | 79.0% | – | – |
| September | 90.0% | – | – |
| October | 80.7% | – | in progress |
| November | 75.0% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 82.5% | 88.2% | ▲ 6.9% |
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 | 2 | 0.0% |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 2 | 8 | ▲ 300.0% |
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 98.8% 1,174
- Cancelled 1.2% 14
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 |
|---|---|---|---|---|
| ATL BNA Hartsfield Jackson Atlanta International Airport – Nashville International Airport | 344 | 5.7 min | 85.6% | 395 |
| BNA ATL Nashville International Airport – Hartsfield Jackson Atlanta International Airport | 344 | 5.9 min | 87.5% | 362 |
| SEA PHX Seattle–Tacoma International Airport – Phoenix Sky Harbor International Airport | 1,782 | 8.1 min | 83.3% | 194 |
| PHX SEA Phoenix Sky Harbor International Airport – Seattle–Tacoma International Airport | 1,782 | 11.1 min | 80.7% | 194 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 29 | 29 | 93.1% | 0 |
| November 2024 | 40 | 40 | 90.0% | 0 |
| December 2024 | 62 | 62 | 87.1% | 0 |
| January 2025 | 62 | 60 | 78.3% | 2 |
| February 2025 | 56 | 56 | 76.8% | 0 |
| March 2025 | 60 | 60 | 90.0% | 0 |
| April 2025 | 43 | 43 | 76.7% | 0 |
| May 2025 | 56 | 56 | 78.6% | 0 |
| June 2025 | 60 | 60 | 86.7% | 0 |
| July 2025 | 62 | 62 | 90.3% | 0 |
| August 2025 | 62 | 62 | 79.0% | 0 |
| September 2025 | 60 | 60 | 90.0% | 0 |
| October 2025 | 62 | 62 | 80.7% | 0 |
| November 2025 | 58 | 56 | 75.0% | 2 |
| December 2025 | 59 | 57 | 80.7% | 2 |
| January 2026 | 34 | 32 | 90.6% | 2 |
| February 2026 | 25 | 23 | 87.0% | 2 |
| March 2026 | 54 | 52 | 82.7% | 2 |
| April 2026 | 60 | 58 | 91.4% | 2 |
| May 2026 | 62 | 62 | 95.2% | 0 |
| June 2026 | 60 | 60 | 91.7% | 0 |
| July 2026 | 62 | 62 | 79.0% | 0 |