DL788
DL788 (Delta Air Lines) is a multi-stop service on 2 routes, busiest Detroit to San Antonio. Of 903 departures recorded from October 2024 to July 2026, 88.8% left on time, according to the US BTS.
- On-time departures88.8%of 903 flights
- Average delay2.6 min
- July 202646▼ 22.0%vs July 2025
- Cancelled0.8%
- 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 | 35 | 35 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 28 | 46 | ▲ 64.3% |
| May | 25 | 56 | ▲ 124.0% |
| June | 52 | 47 | ▼ 9.6% |
| July | 59 | 46 | ▼ 22.0% |
| August | 56 | – | – |
| September | 56 | – | – |
| October | 43 | – | in progress |
| November | 51 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 258 | 289 | ▲ 12.0% |
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 | 94.3% | 74.3% | ▼ 21.2% |
| February | 89.3% | 82.1% | ▼ 8.0% |
| March | 80.7% | 93.6% | ▲ 16.0% |
| April | 96.4% | 91.3% | ▼ 5.3% |
| May | 92.0% | 87.5% | ▼ 4.9% |
| June | 84.0% | 100.0% | ▲ 19.0% |
| July | 89.7% | 90.9% | ▲ 1.4% |
| August | 92.9% | – | – |
| September | 92.9% | – | – |
| October | 88.4% | – | in progress |
| November | 88.2% | – | – |
| December | 72.4% | – | – |
| Year-to-date average (Jan–Jul) | 89.5% | 88.5% | ▼ 1.1% |
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 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 2 | 0.0% |
| July | 1 | 2 | ▲ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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 99.2% 896
- Cancelled 0.8% 7
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 |
|---|---|---|---|---|
| DTW SAT Detroit Metropolitan Wayne County Airport – San Antonio International Airport | 1,954 | 3.2 min | 90.2% | 616 |
| SAT DTW San Antonio International Airport – Detroit Metropolitan Wayne County Airport | 1,954 | 1.3 min | 85.9% | 287 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 42 | 42 | 88.1% | 0 |
| January 2025 | 35 | 35 | 94.3% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 28 | 28 | 96.4% | 0 |
| May 2025 | 25 | 25 | 92.0% | 0 |
| June 2025 | 52 | 50 | 84.0% | 2 |
| July 2025 | 59 | 58 | 89.7% | 1 |
| August 2025 | 56 | 56 | 92.9% | 0 |
| September 2025 | 56 | 56 | 92.9% | 0 |
| October 2025 | 43 | 43 | 88.4% | 0 |
| November 2025 | 51 | 51 | 88.2% | 0 |
| December 2025 | 58 | 58 | 72.4% | 0 |
| January 2026 | 35 | 35 | 74.3% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 31 | 93.6% | 0 |
| April 2026 | 46 | 46 | 91.3% | 0 |
| May 2026 | 56 | 56 | 87.5% | 0 |
| June 2026 | 47 | 45 | 100.0% | 2 |
| July 2026 | 46 | 44 | 90.9% | 2 |