DL1100
DL1100 (Delta Air Lines) is a multi-stop service on 6 routes, busiest Philadelphia to Atlanta. Of 900 departures recorded from October 2024 to July 2026, 85.9% left on time, according to the US BTS.
- On-time departures85.9%of 900 flights
- Average delay4.7 min
- July 202654▲ 17.4%vs July 2025
- Cancelled2.2%
- 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 | 56 | 30 | ▼ 46.4% |
| February | 56 | 41 | ▼ 26.8% |
| March | 39 | 62 | ▲ 59.0% |
| April | 30 | 42 | ▲ 40.0% |
| May | 27 | 31 | ▲ 14.8% |
| June | 42 | 48 | ▲ 14.3% |
| July | 46 | 54 | ▲ 17.4% |
| August | 49 | – | – |
| September | 46 | – | – |
| October | 53 | – | in progress |
| November | 47 | – | – |
| December | 47 | – | – |
| Year to date (Jan–Jul) | 296 | 308 | ▲ 4.1% |
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 | 84.9% | 86.2% | ▲ 1.5% |
| February | 80.4% | 78.4% | ▼ 2.5% |
| March | 87.2% | 81.7% | ▼ 6.3% |
| April | 86.7% | 95.1% | ▲ 9.7% |
| May | 66.7% | 87.1% | ▲ 30.6% |
| June | 90.5% | 97.9% | ▲ 8.2% |
| July | 87.0% | 87.8% | ▲ 0.9% |
| August | 91.8% | – | – |
| September | 95.7% | – | – |
| October | 84.9% | – | in progress |
| November | 83.0% | – | – |
| December | 81.4% | – | – |
| Year-to-date average (Jan–Jul) | 83.3% | 87.7% | ▲ 5.3% |
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 | 3 | 1 | ▼ 66.7% |
| February | 0 | 4 | – |
| March | 0 | 2 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 3 | 13 | ▲ 333.3% |
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 97.8% 880
- Cancelled 2.2% 20
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 |
|---|---|---|---|---|
| PHL ATL Philadelphia International Airport – Hartsfield Jackson Atlanta International Airport | 1,072 | 4.9 min | 86.3% | 432 |
| ATL PHL Hartsfield Jackson Atlanta International Airport – Philadelphia International Airport | 1,072 | 2.7 min | 88.3% | 317 |
| ATL RDU Hartsfield Jackson Atlanta International Airport – Raleigh-Durham International Airport | 572 | 7.1 min | 77.1% | 70 |
| MSP DFW Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Dallas Fort Worth International Airport | 1,372 | 4.3 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 81.3% | 0 |
| November 2024 | 21 | 21 | 81.0% | 0 |
| December 2024 | 17 | 17 | 76.5% | 0 |
| January 2025 | 56 | 53 | 84.9% | 3 |
| February 2025 | 56 | 56 | 80.4% | 0 |
| March 2025 | 39 | 39 | 87.2% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 27 | 27 | 66.7% | 0 |
| June 2025 | 42 | 42 | 90.5% | 0 |
| July 2025 | 46 | 46 | 87.0% | 0 |
| August 2025 | 49 | 49 | 91.8% | 0 |
| September 2025 | 46 | 46 | 95.7% | 0 |
| October 2025 | 53 | 53 | 84.9% | 0 |
| November 2025 | 47 | 47 | 83.0% | 0 |
| December 2025 | 47 | 43 | 81.4% | 4 |
| January 2026 | 30 | 29 | 86.2% | 1 |
| February 2026 | 41 | 37 | 78.4% | 4 |
| March 2026 | 62 | 60 | 81.7% | 2 |
| April 2026 | 42 | 41 | 95.1% | 1 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 48 | 48 | 97.9% | 0 |
| July 2026 | 54 | 49 | 87.8% | 5 |