DL1020
DL1020 (Delta Air Lines) is a multi-stop service on 11 routes, busiest Washington to Atlanta. Of 609 departures recorded from October 2024 to July 2026, 78.7% left on time, according to the US BTS.
- On-time departures78.7%of 609 flights
- Average delay15.8 min
- July 202614▼ 44.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number11
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 | 31 | 42 | ▲ 35.5% |
| February | 28 | 39 | ▲ 39.3% |
| March | 31 | 28 | ▼ 9.7% |
| April | 30 | 28 | ▼ 6.7% |
| May | 31 | 31 | 0.0% |
| June | 23 | 16 | ▼ 30.4% |
| July | 25 | 14 | ▼ 44.0% |
| August | 25 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 24 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 199 | 198 | ▼ 0.5% |
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 | 74.2% | 81.0% | ▲ 9.1% |
| February | 71.4% | 89.2% | ▲ 24.9% |
| March | 87.1% | 75.0% | ▼ 13.9% |
| April | 86.7% | 71.4% | ▼ 17.6% |
| May | 74.2% | 73.3% | ▼ 1.2% |
| June | 65.2% | 93.8% | ▲ 43.7% |
| July | 72.0% | 64.3% | ▼ 10.7% |
| August | 72.0% | – | – |
| September | 96.2% | – | – |
| October | 88.5% | – | in progress |
| November | 75.0% | – | – |
| December | 68.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.8% | 78.3% | ▲ 3.2% |
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 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 0 | 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 98.5% 600
- Cancelled 1.5% 9
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DCA ATL Ronald Reagan Washington National Airport – Hartsfield Jackson Atlanta International Airport | 880 | 13.8 min | 78.7% | 184 |
| ORD LGA Chicago O'Hare International Airport – LaGuardia Airport | 1,177 | 20.1 min | 76.3% | 160 |
| AUS DTW Austin Bergstrom International Airport – Detroit Metropolitan Wayne County Airport | 1,848 | 29.1 min | 74.2% | 62 |
| AUS MSP Austin Bergstrom International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,678 | 1.5 min | 86.8% | 38 |
| BOS JFK Boston Logan International Airport – John F. Kennedy International Airport | 300 | 6.3 min | 87.1% | 33 |
| SNA ATL John Wayne Orange County International Airport – Hartsfield Jackson Atlanta International Airport | 3,081 | 11.3 min | 77.4% | 31 |
| BOS BNA Boston Logan International Airport – Nashville International Airport | 1,514 | 10.4 min | 80.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 31 | 30 | 73.3% | 1 |
| January 2025 | 31 | 31 | 74.2% | 0 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 74.2% | 0 |
| June 2025 | 23 | 23 | 65.2% | 0 |
| July 2025 | 25 | 25 | 72.0% | 0 |
| August 2025 | 25 | 25 | 72.0% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 27 | 26 | 88.5% | 1 |
| November 2025 | 24 | 24 | 75.0% | 0 |
| December 2025 | 29 | 25 | 68.0% | 4 |
| January 2026 | 42 | 42 | 81.0% | 0 |
| February 2026 | 39 | 37 | 89.2% | 2 |
| March 2026 | 28 | 28 | 75.0% | 0 |
| April 2026 | 28 | 28 | 71.4% | 0 |
| May 2026 | 31 | 30 | 73.3% | 1 |
| June 2026 | 16 | 16 | 93.8% | 0 |
| July 2026 | 14 | 14 | 64.3% | 0 |