WN4412
WN4412 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Houston to Baltimore. Of 408 departures recorded from October 2024 to July 2026, 71.5% left on time, according to the US BTS.
- On-time departures71.5%of 408 flights
- Average delay12.5 min
- July 20269▲ 125.0%vs July 2025
- Cancelled1.0%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 5 | ▼ 80.8% |
| February | 25 | 7 | ▼ 72.0% |
| March | 31 | 28 | ▼ 9.7% |
| April | 7 | 20 | ▲ 185.7% |
| May | – | 18 | – |
| June | 4 | 11 | ▲ 175.0% |
| July | 4 | 9 | ▲ 125.0% |
| August | 23 | – | – |
| September | 26 | – | – |
| October | 43 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 62.5% | 60.0% | ▼ 4.0% |
| February | 72.0% | 100.0% | ▲ 38.9% |
| March | 56.7% | 96.4% | ▲ 70.2% |
| April | 100.0% | 75.0% | ▼ 25.0% |
| May | – | 61.1% | – |
| June | 50.0% | 45.5% | ▼ 9.1% |
| July | 75.0% | 22.2% | ▼ 70.4% |
| August | 69.6% | – | – |
| September | 65.4% | – | – |
| October | 93.0% | – | in progress |
| November | 82.1% | – | – |
| December | 74.2% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 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 99.0% 404
- Cancelled 1.0% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU BWI William P. Hobby Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,003 | 12.7 min | 67.4% | 100 |
| STL TUL St. Louis Lambert International Airport – Tulsa International Airport | 563 | 14.2 min | 69.4% | 49 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 9.4 min | 87.0% | 46 |
| SBA LAS Santa Barbara Municipal Airport – Harry Reid International Airport | 464 | -3.9 min | 97.0% | 33 |
| ELP AUS El Paso International Airport – Austin Bergstrom International Airport | 849 | -1.1 min | 96.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 42.9% | 0 |
| November 2024 | 25 | 25 | 68.0% | 0 |
| December 2024 | 22 | 22 | 68.2% | 0 |
| January 2025 | 26 | 24 | 62.5% | 2 |
| February 2025 | 25 | 25 | 72.0% | 0 |
| March 2025 | 31 | 30 | 56.7% | 1 |
| April 2025 | 7 | 7 | 100.0% | 0 |
| June 2025 | 4 | 4 | 50.0% | 0 |
| July 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 23 | 23 | 69.6% | 0 |
| September 2025 | 26 | 26 | 65.4% | 0 |
| October 2025 | 43 | 43 | 93.0% | 0 |
| November 2025 | 29 | 28 | 82.1% | 1 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 5 | 5 | 60.0% | 0 |
| February 2026 | 7 | 7 | 100.0% | 0 |
| March 2026 | 28 | 28 | 96.4% | 0 |
| April 2026 | 20 | 20 | 75.0% | 0 |
| May 2026 | 18 | 18 | 61.1% | 0 |
| June 2026 | 11 | 11 | 45.5% | 0 |
| July 2026 | 9 | 9 | 22.2% | 0 |