DL523
DL523 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Cleveland to Atlanta. Of 545 departures recorded from October 2024 to July 2026, 86.5% left on time, according to the US BTS.
- On-time departures86.5%of 545 flights
- Average delay6.4 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.7%
- 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 | 26 | 31 | ▲ 19.2% |
| February | 28 | 28 | 0.0% |
| 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 | 8 | – | – |
| December | 8 | – | – |
| Year to date (Jan–Jul) | 207 | 176 | ▼ 15.0% |
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 | 69.2% | 77.4% | ▲ 11.8% |
| February | 78.6% | 85.7% | ▲ 9.1% |
| March | 87.1% | 85.7% | ▼ 1.6% |
| April | 93.3% | 100.0% | ▲ 7.1% |
| May | 90.3% | 86.7% | ▼ 4.0% |
| June | 86.2% | 83.3% | ▼ 3.3% |
| July | 90.3% | 74.2% | ▼ 17.9% |
| August | 93.6% | – | – |
| September | 96.7% | – | – |
| October | 93.6% | – | in progress |
| November | 100.0% | – | – |
| December | 50.0% | – | – |
| Year-to-date average (Jan–Jul) | 85.0% | 84.7% | ▼ 0.3% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 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 99.3% 541
- Cancelled 0.7% 4
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CLE ATL Cleveland Hopkins International Airport – Hartsfield Jackson Atlanta International Airport | 894 | 0.8 min | 91.9% | 186 |
| DTW LAX Detroit Metropolitan Wayne County Airport – Los Angeles International Airport | 3,178 | 10.3 min | 82.3% | 184 |
| PHX ATL Phoenix Sky Harbor International Airport – Hartsfield Jackson Atlanta International Airport | 2,549 | 20.4 min | 72.6% | 62 |
| MCO AUS Orlando International Airport – Austin Bergstrom International Airport | 1,596 | -1.1 min | 94.9% | 59 |
| LAX ATL Los Angeles International Airport – Hartsfield Jackson Atlanta International Airport | 3,126 | 5.2 min | 88.7% | 53 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 93.3% | 0 |
| November 2024 | 22 | 22 | 81.8% | 0 |
| December 2024 | 17 | 17 | 94.1% | 0 |
| January 2025 | 26 | 26 | 69.2% | 0 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 29 | 86.2% | 1 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 8 | 8 | 100.0% | 0 |
| December 2025 | 8 | 6 | 50.0% | 2 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 7 | 7 | 85.7% | 0 |
| April 2026 | 18 | 18 | 100.0% | 0 |
| May 2026 | 31 | 30 | 86.7% | 1 |
| June 2026 | 30 | 30 | 83.3% | 0 |
| July 2026 | 31 | 31 | 74.2% | 0 |