DL1552
DL1552 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Raleigh to Atlanta. Of 664 departures recorded from October 2024 to July 2026, 90.9% left on time, according to the US BTS.
- On-time departures90.9%of 664 flights
- Average delay6.1 min
- July 202630▼ 3.2%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 | 25 | 37 | ▲ 48.0% |
| February | 17 | 45 | ▲ 164.7% |
| March | 31 | 35 | ▲ 12.9% |
| April | 30 | 28 | ▼ 6.7% |
| May | 31 | 31 | 0.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 195 | 236 | ▲ 21.0% |
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 | 91.3% | 97.1% | ▲ 6.4% |
| February | 88.2% | 93.3% | ▲ 5.8% |
| March | 93.6% | 82.4% | ▼ 12.0% |
| April | 100.0% | 100.0% | 0.0% |
| May | 96.8% | 93.6% | ▼ 3.3% |
| June | 76.7% | 96.6% | ▲ 25.9% |
| July | 67.7% | 100.0% | ▲ 47.6% |
| August | 74.2% | – | – |
| September | 86.7% | – | – |
| October | 93.6% | – | in progress |
| November | 93.3% | – | – |
| December | 90.3% | – | – |
| Year-to-date average (Jan–Jul) | 87.8% | 94.7% | ▲ 7.9% |
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 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 66.7% |
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% 656
- Cancelled 1.2% 8
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 |
|---|---|---|---|---|
| RDU ATL Raleigh-Durham International Airport – Hartsfield Jackson Atlanta International Airport | 572 | 0.8 min | 95.4% | 401 |
| DFW SLC Dallas Fort Worth International Airport – Salt Lake City International Airport | 1,590 | 18.6 min | 82.1% | 195 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 29 | 29 | 96.6% | 0 |
| December 2024 | 31 | 31 | 93.6% | 0 |
| January 2025 | 25 | 23 | 91.3% | 2 |
| February 2025 | 17 | 17 | 88.2% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 29 | 100.0% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 31 | 31 | 67.7% | 0 |
| August 2025 | 31 | 31 | 74.2% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 31 | 31 | 90.3% | 0 |
| January 2026 | 37 | 35 | 97.1% | 2 |
| February 2026 | 45 | 45 | 93.3% | 0 |
| March 2026 | 35 | 34 | 82.4% | 1 |
| April 2026 | 28 | 27 | 100.0% | 1 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 29 | 96.6% | 1 |
| July 2026 | 30 | 30 | 100.0% | 0 |