WN1039
WN1039 (Southwest Airlines) is a multi-stop service on 34 routes, busiest San Jose to Los Angeles. Of 791 departures recorded from October 2024 to July 2026, 74.9% left on time, according to the US BTS.
- On-time departures74.9%of 791 flights
- Average delay12.0 min
- July 202662▲ 100.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number34
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 | 36 | 31 | ▼ 13.9% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 42 | 27 | ▼ 35.7% |
| May | 48 | 26 | ▼ 45.8% |
| June | 32 | 58 | ▲ 81.3% |
| July | 31 | 62 | ▲ 100.0% |
| August | 38 | – | – |
| September | 39 | – | – |
| October | 31 | – | in progress |
| November | 41 | – | – |
| December | 41 | – | – |
| Year to date (Jan–Jul) | 248 | 263 | ▲ 6.0% |
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 | 85.7% | 77.4% | ▼ 9.7% |
| February | 92.9% | 82.1% | ▼ 11.5% |
| March | 93.6% | 61.3% | ▼ 34.5% |
| April | 88.1% | 74.1% | ▼ 15.9% |
| May | 89.6% | 69.2% | ▼ 22.7% |
| June | 87.5% | 47.4% | ▼ 45.9% |
| July | 93.6% | 33.9% | ▼ 63.8% |
| August | 81.6% | – | – |
| September | 92.3% | – | – |
| October | 58.1% | – | in progress |
| November | 85.4% | – | – |
| December | 58.5% | – | – |
| Year-to-date average (Jan–Jul) | 90.1% | 63.6% | ▼ 29.4% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 99.4% 786
- Cancelled 0.6% 5
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 20 | 20 | 95.0% | 0 |
| December 2024 | 50 | 50 | 76.0% | 0 |
| January 2025 | 36 | 35 | 85.7% | 1 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 42 | 42 | 88.1% | 0 |
| May 2025 | 48 | 48 | 89.6% | 0 |
| June 2025 | 32 | 32 | 87.5% | 0 |
| July 2025 | 31 | 31 | 93.6% | 0 |
| August 2025 | 38 | 38 | 81.6% | 0 |
| September 2025 | 39 | 39 | 92.3% | 0 |
| October 2025 | 31 | 31 | 58.1% | 0 |
| November 2025 | 41 | 41 | 85.4% | 0 |
| December 2025 | 41 | 41 | 58.5% | 0 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 31 | 61.3% | 0 |
| April 2026 | 27 | 27 | 74.1% | 0 |
| May 2026 | 26 | 26 | 69.2% | 0 |
| June 2026 | 58 | 57 | 47.4% | 1 |
| July 2026 | 62 | 59 | 33.9% | 3 |