DL1166
DL1166 (Delta Air Lines) is a multi-stop service on 2 routes, busiest San Antonio to New York. Of 1,259 departures recorded from October 2024 to July 2026, 86.2% left on time, according to the US BTS.
- On-time departures86.2%of 1,259 flights
- Average delay12.2 min
- July 202662▲ 0.0%vs July 2025
- Cancelled2.9%
- 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 | 56 | 57 | ▲ 1.8% |
| February | 52 | 53 | ▲ 1.9% |
| March | 57 | 58 | ▲ 1.8% |
| April | 56 | 58 | ▲ 3.6% |
| May | 61 | 62 | ▲ 1.6% |
| June | 60 | 60 | 0.0% |
| July | 62 | 62 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 60 | – | – |
| December | 48 | – | – |
| Year to date (Jan–Jul) | 404 | 410 | ▲ 1.5% |
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 | 83.9% | 82.4% | ▼ 1.9% |
| February | 84.6% | 87.8% | ▲ 3.7% |
| March | 79.0% | 88.0% | ▲ 11.5% |
| April | 91.1% | 94.8% | ▲ 4.1% |
| May | 90.2% | 98.4% | ▲ 9.1% |
| June | 87.0% | 76.7% | ▼ 11.9% |
| July | 71.0% | 81.5% | ▲ 14.8% |
| August | 93.6% | – | – |
| September | 90.0% | – | – |
| October | 88.7% | – | in progress |
| November | 91.5% | – | – |
| December | 79.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.8% | 87.1% | ▲ 3.9% |
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 | 0 | 6 | – |
| February | 0 | 4 | – |
| March | 0 | 8 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 6 | 0 | ▼ 100.0% |
| July | 0 | 8 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 6 | 26 | ▲ 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 97.1% 1,222
- Cancelled 2.9% 37
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 |
|---|---|---|---|---|
| SAT JFK San Antonio International Airport – John F. Kennedy International Airport | 2,551 | 19.9 min | 79.9% | 655 |
| JFK SAT John F. Kennedy International Airport – San Antonio International Airport | 2,551 | 3.8 min | 93.0% | 604 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 40 | 40 | 90.0% | 0 |
| November 2024 | 60 | 60 | 85.0% | 0 |
| December 2024 | 53 | 53 | 79.3% | 0 |
| January 2025 | 56 | 56 | 83.9% | 0 |
| February 2025 | 52 | 52 | 84.6% | 0 |
| March 2025 | 57 | 57 | 79.0% | 0 |
| April 2025 | 56 | 56 | 91.1% | 0 |
| May 2025 | 61 | 61 | 90.2% | 0 |
| June 2025 | 60 | 54 | 87.0% | 6 |
| July 2025 | 62 | 62 | 71.0% | 0 |
| August 2025 | 62 | 62 | 93.6% | 0 |
| September 2025 | 60 | 60 | 90.0% | 0 |
| October 2025 | 62 | 62 | 88.7% | 0 |
| November 2025 | 60 | 59 | 91.5% | 1 |
| December 2025 | 48 | 44 | 79.6% | 4 |
| January 2026 | 57 | 51 | 82.4% | 6 |
| February 2026 | 53 | 49 | 87.8% | 4 |
| March 2026 | 58 | 50 | 88.0% | 8 |
| April 2026 | 58 | 58 | 94.8% | 0 |
| May 2026 | 62 | 62 | 98.4% | 0 |
| June 2026 | 60 | 60 | 76.7% | 0 |
| July 2026 | 62 | 54 | 81.5% | 8 |