DL511
DL511 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Cincinnati to Orlando. Of 1,290 departures recorded from October 2024 to July 2026, 82.8% left on time, according to the US BTS.
- On-time departures82.8%of 1,290 flights
- Average delay11.4 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number5
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 | 61 | ▼ 1.6% |
| February | 56 | 56 | 0.0% |
| March | 62 | 62 | 0.0% |
| 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 | 60 | – | – |
| December | 60 | – | – |
| Year to date (Jan–Jul) | 401 | 423 | ▲ 5.5% |
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 | 66.1% | 87.7% | ▲ 32.6% |
| February | 75.9% | 85.7% | ▲ 12.9% |
| March | 83.9% | 71.7% | ▼ 14.5% |
| April | 88.4% | 91.7% | ▲ 3.7% |
| May | 71.4% | 87.1% | ▲ 21.9% |
| June | 73.3% | 79.0% | ▲ 7.7% |
| July | 79.0% | 82.3% | ▲ 4.1% |
| August | 80.7% | – | – |
| September | 91.7% | – | – |
| October | 87.1% | – | in progress |
| November | 86.7% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 76.9% | 83.6% | ▲ 8.7% |
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 | 4 | – |
| February | 2 | 0 | ▼ 100.0% |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 3 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 9 | ▲ 350.0% |
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 99.1% 1,279
- Cancelled 0.9% 11
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MCO CVG Orlando International Airport – Cincinnati Northern Kentucky International Airport | 1,221 | 15.3 min | 79.1% | 632 |
| CVG MCO Cincinnati Northern Kentucky International Airport – Orlando International Airport | 1,221 | 7.7 min | 86.4% | 632 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 90.0% | 0 |
| November 2024 | 60 | 60 | 96.7% | 0 |
| December 2024 | 62 | 62 | 91.9% | 0 |
| January 2025 | 62 | 62 | 66.1% | 0 |
| February 2025 | 56 | 54 | 75.9% | 2 |
| March 2025 | 62 | 62 | 83.9% | 0 |
| April 2025 | 43 | 43 | 88.4% | 0 |
| May 2025 | 56 | 56 | 71.4% | 0 |
| June 2025 | 60 | 60 | 73.3% | 0 |
| July 2025 | 62 | 62 | 79.0% | 0 |
| August 2025 | 62 | 62 | 80.7% | 0 |
| September 2025 | 60 | 60 | 91.7% | 0 |
| October 2025 | 62 | 62 | 87.1% | 0 |
| November 2025 | 60 | 60 | 86.7% | 0 |
| December 2025 | 60 | 60 | 76.7% | 0 |
| January 2026 | 61 | 57 | 87.7% | 4 |
| February 2026 | 56 | 56 | 85.7% | 0 |
| March 2026 | 62 | 60 | 71.7% | 2 |
| April 2026 | 60 | 60 | 91.7% | 0 |
| May 2026 | 62 | 62 | 87.1% | 0 |
| June 2026 | 60 | 57 | 79.0% | 3 |
| July 2026 | 62 | 62 | 82.3% | 0 |