WN4547
WN4547 (Southwest Airlines) is a multi-stop service on 22 routes, busiest New Orleans to Houston. Of 297 departures recorded from October 2024 to July 2026, 79.9% left on time, according to the US BTS.
- On-time departures79.9%of 297 flights
- Average delay12.1 min
- July 202630▲ 87.5%vs July 2025
- Cancelled1.4%
- Legs flown under this number22
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 2 | ▼ 50.0% |
| February | – | 12 | – |
| March | 26 | 27 | ▲ 3.8% |
| April | 15 | 14 | ▼ 6.7% |
| May | 14 | – | – |
| June | 13 | 27 | ▲ 107.7% |
| July | 16 | 30 | ▲ 87.5% |
| August | 12 | – | – |
| September | 9 | – | – |
| October | 15 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 100.0% | ▲ 100.0% |
| February | – | 100.0% | – |
| March | 72.0% | 64.0% | ▼ 11.1% |
| April | 80.0% | 85.7% | ▲ 7.1% |
| May | 100.0% | – | – |
| June | 69.2% | 88.9% | ▲ 28.4% |
| July | 56.3% | 93.3% | ▲ 65.9% |
| August | 81.8% | – | – |
| September | 77.8% | – | – |
| October | 93.3% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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% 293
- Cancelled 1.3% 4
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MSY HOU Louis Armstrong New Orleans International Airport – William P. Hobby Airport | 485 | 6.3 min | 91.2% | 57 |
| STL MCO St. Louis Lambert International Airport – Orlando International Airport | 1,420 | 16.5 min | 70.0% | 32 |
| BWI IND Baltimore/Washington International Thurgood Marshall Airport – Indianapolis International Airport | 828 | 15.0 min | 67.7% | 32 |
| HOU ATL William P. Hobby Airport – Hartsfield Jackson Atlanta International Airport | 1,118 | 16.1 min | 71.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 80.8% | 0 |
| November 2024 | 19 | 19 | 73.7% | 0 |
| December 2024 | 15 | 15 | 66.7% | 0 |
| January 2025 | 4 | 4 | 50.0% | 0 |
| March 2025 | 26 | 25 | 72.0% | 1 |
| April 2025 | 15 | 15 | 80.0% | 0 |
| May 2025 | 14 | 14 | 100.0% | 0 |
| June 2025 | 13 | 13 | 69.2% | 0 |
| July 2025 | 16 | 16 | 56.3% | 0 |
| August 2025 | 12 | 11 | 81.8% | 1 |
| September 2025 | 9 | 9 | 77.8% | 0 |
| October 2025 | 15 | 15 | 93.3% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 12 | 12 | 100.0% | 0 |
| March 2026 | 27 | 25 | 64.0% | 2 |
| April 2026 | 14 | 14 | 85.7% | 0 |
| June 2026 | 27 | 27 | 88.9% | 0 |
| July 2026 | 30 | 30 | 93.3% | 0 |