WN439
WN439 (Southwest Airlines) is a multi-stop service on 40 routes, busiest New Orleans to Austin. Of 741 departures recorded from October 2024 to July 2026, 77.1% left on time, according to the US BTS.
- On-time departures77.1%of 741 flights
- Average delay11.5 min
- July 202649▲ 172.2%vs July 2025
- Cancelled0.4%
- Legs flown under this number40
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 | 38 | ▲ 8.6% |
| February | 20 | 21 | ▲ 5.0% |
| March | 24 | 34 | ▲ 41.7% |
| April | 38 | 18 | ▼ 52.6% |
| May | 39 | 13 | ▼ 66.7% |
| June | 21 | 45 | ▲ 114.3% |
| July | 18 | 49 | ▲ 172.2% |
| August | 38 | – | – |
| September | 39 | – | – |
| October | 32 | – | in progress |
| November | 41 | – | – |
| December | 55 | – | – |
| Year to date (Jan–Jul) | 195 | 218 | ▲ 11.8% |
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 | 82.9% | 81.1% | ▼ 2.1% |
| February | 100.0% | 66.7% | ▼ 33.3% |
| March | 70.8% | 66.7% | ▼ 5.9% |
| April | 76.3% | 83.3% | ▲ 9.2% |
| May | 74.4% | 84.6% | ▲ 13.8% |
| June | 66.7% | 82.2% | ▲ 23.3% |
| July | 100.0% | 79.2% | ▼ 20.8% |
| August | 68.4% | – | – |
| September | 74.4% | – | – |
| October | 93.8% | – | in progress |
| November | 63.4% | – | – |
| December | 41.8% | – | – |
| Year-to-date average (Jan–Jul) | 81.6% | 77.7% | ▼ 4.8% |
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 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.6% 738
- Cancelled 0.4% 3
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
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 52 | 52 | 98.1% | 0 |
| December 2024 | 51 | 51 | 82.4% | 0 |
| January 2025 | 35 | 35 | 82.9% | 0 |
| February 2025 | 20 | 20 | 100.0% | 0 |
| March 2025 | 24 | 24 | 70.8% | 0 |
| April 2025 | 38 | 38 | 76.3% | 0 |
| May 2025 | 39 | 39 | 74.4% | 0 |
| June 2025 | 21 | 21 | 66.7% | 0 |
| July 2025 | 18 | 18 | 100.0% | 0 |
| August 2025 | 38 | 38 | 68.4% | 0 |
| September 2025 | 39 | 39 | 74.4% | 0 |
| October 2025 | 32 | 32 | 93.8% | 0 |
| November 2025 | 41 | 41 | 63.4% | 0 |
| December 2025 | 55 | 55 | 41.8% | 0 |
| January 2026 | 38 | 37 | 81.1% | 1 |
| February 2026 | 21 | 21 | 66.7% | 0 |
| March 2026 | 34 | 33 | 66.7% | 1 |
| April 2026 | 18 | 18 | 83.3% | 0 |
| May 2026 | 13 | 13 | 84.6% | 0 |
| June 2026 | 45 | 45 | 82.2% | 0 |
| July 2026 | 49 | 48 | 79.2% | 1 |