DL2104
DL2104 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Austin to Atlanta. Of 1,231 departures recorded from October 2024 to July 2026, 81.0% left on time, according to the US BTS.
- On-time departures81.0%of 1,231 flights
- Average delay9.5 min
- July 202661▼ 1.6%vs July 2025
- Cancelled1.3%
- Legs flown under this number2
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 | 52 | 57 | ▲ 9.6% |
| February | 44 | 54 | ▲ 22.7% |
| March | 58 | 38 | ▼ 34.5% |
| April | 60 | 48 | ▼ 20.0% |
| May | 62 | 62 | 0.0% |
| June | 60 | 60 | 0.0% |
| July | 62 | 61 | ▼ 1.6% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 61 | – | in progress |
| November | 58 | – | – |
| December | 59 | – | – |
| Year to date (Jan–Jul) | 398 | 380 | ▼ 4.5% |
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 | 80.0% | 84.9% | ▲ 6.1% |
| February | 81.8% | 86.5% | ▲ 5.8% |
| March | 82.8% | 86.8% | ▲ 4.9% |
| April | 95.0% | 72.9% | ▼ 23.2% |
| May | 72.6% | 82.3% | ▲ 13.3% |
| June | 68.3% | 76.7% | ▲ 12.2% |
| July | 69.4% | 75.4% | ▲ 8.8% |
| August | 80.7% | – | – |
| September | 93.3% | – | – |
| October | 77.1% | – | in progress |
| November | 87.9% | – | – |
| December | 72.7% | – | – |
| Year-to-date average (Jan–Jul) | 78.5% | 80.8% | ▲ 2.9% |
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 | 4 | ▲ 100.0% |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 4 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 2 | 10 | ▲ 400.0% |
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 98.7% 1,215
- Cancelled 1.3% 16
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 |
|---|---|---|---|---|
| AUS ATL Austin Bergstrom International Airport – Hartsfield Jackson Atlanta International Airport | 1,305 | 13.8 min | 77.5% | 627 |
| ATL AUS Hartsfield Jackson Atlanta International Airport – Austin Bergstrom International Airport | 1,305 | 5.1 min | 84.6% | 604 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 97.5% | 0 |
| November 2024 | 57 | 57 | 84.2% | 0 |
| December 2024 | 56 | 56 | 80.4% | 0 |
| January 2025 | 52 | 50 | 80.0% | 2 |
| February 2025 | 44 | 44 | 81.8% | 0 |
| March 2025 | 58 | 58 | 82.8% | 0 |
| April 2025 | 60 | 60 | 95.0% | 0 |
| May 2025 | 62 | 62 | 72.6% | 0 |
| June 2025 | 60 | 60 | 68.3% | 0 |
| July 2025 | 62 | 62 | 69.4% | 0 |
| August 2025 | 62 | 62 | 80.7% | 0 |
| September 2025 | 60 | 60 | 93.3% | 0 |
| October 2025 | 61 | 61 | 77.1% | 0 |
| November 2025 | 58 | 58 | 87.9% | 0 |
| December 2025 | 59 | 55 | 72.7% | 4 |
| January 2026 | 57 | 53 | 84.9% | 4 |
| February 2026 | 54 | 52 | 86.5% | 2 |
| March 2026 | 38 | 38 | 86.8% | 0 |
| April 2026 | 48 | 48 | 72.9% | 0 |
| May 2026 | 62 | 62 | 82.3% | 0 |
| June 2026 | 60 | 60 | 76.7% | 0 |
| July 2026 | 61 | 57 | 75.4% | 4 |