DL1821
DL1821 (Delta Air Lines) is a multi-stop service on 5 routes, busiest Atlanta to Jackson. Of 303 departures recorded from June 2025 to July 2026, 72.2% left on time, according to the US BTS.
- On-time departures72.2%of 303 flights
- Average delay18.0 min
- July 202662▲ 0.0%vs July 2025
- Cancelled1.3%
- Legs flown under this number5
Recorded departures by month
Short series — DL1821 has only 9 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods9 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 46 | 48 | ▲ 4.3% |
| July | 62 | 62 | 0.0% |
| August | 36 | – | – |
| September | 36 | – | – |
| October | 8 | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
according to the US BTS · June 2025 → July 2026
On-time departures by month
Short series — DL1821 has only 9 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods9 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 45.5% | 81.3% | ▲ 78.8% |
| July | 66.1% | 76.7% | ▲ 15.9% |
| August | 83.3% | – | – |
| September | 80.6% | – | – |
| October | 75.0% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
according to the US BTS · June 2025 → July 2026
Average departure delay by month
Short series — DL1821 has only 9 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · June 2025 → July 2026
Cancelled departures by month
Short series — DL1821 has only 9 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods9 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · June 2025 → 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 98.7% 299
- Cancelled 1.3% 4
Share of all recorded flights in the period, all legs. · Jun 8, 2025 → 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 |
|---|---|---|---|---|
| JAN ATL Jackson-Medgar Wiley Evers International Airport – Hartsfield Jackson Atlanta International Airport | 547 | 27.8 min | 63.4% | 94 |
| ATL JAN Hartsfield Jackson Atlanta International Airport – Jackson-Medgar Wiley Evers International Airport | 547 | 17.2 min | 72.0% | 94 |
| PWM DTW Portland International Jetport – Detroit Metropolitan Wayne County Airport | 1,073 | 19.5 min | 68.5% | 55 |
| DTW PWM Detroit Metropolitan Wayne County Airport – Portland International Jetport | 1,073 | 2.8 min | 88.9% | 55 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| June 2025 | 46 | 44 | 45.5% | 2 |
| July 2025 | 62 | 62 | 66.1% | 0 |
| August 2025 | 36 | 36 | 83.3% | 0 |
| September 2025 | 36 | 36 | 80.6% | 0 |
| October 2025 | 8 | 8 | 75.0% | 0 |
| November 2025 | 3 | 3 | 100.0% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| June 2026 | 48 | 48 | 81.3% | 0 |
| July 2026 | 62 | 60 | 76.7% | 2 |