WN12
WN12 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Houston to Dallas. Of 512 departures recorded from October 2024 to July 2026, 82.3% left on time, according to the US BTS.
- On-time departures82.3%of 512 flights
- Average delay8.6 min
- July 202616
- Cancelled1.8%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 32 | 54 | ▲ 68.8% |
| February | 11 | 41 | ▲ 272.7% |
| March | 28 | 31 | ▲ 10.7% |
| April | 16 | 5 | ▼ 68.8% |
| May | 8 | – | – |
| June | 2 | 8 | ▲ 300.0% |
| July | – | 16 | – |
| August | – | – | – |
| September | – | – | – |
| October | 36 | – | in progress |
| November | 27 | – | – |
| December | 42 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 88.9% | 96.2% | ▲ 8.2% |
| February | 90.9% | 92.7% | ▲ 1.9% |
| March | 88.9% | 90.3% | ▲ 1.6% |
| April | 62.5% | 60.0% | ▼ 4.0% |
| May | 85.7% | – | – |
| June | 50.0% | 87.5% | ▲ 75.0% |
| July | – | 75.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | 72.2% | – | in progress |
| November | 96.3% | – | – |
| December | 85.7% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 5 | 2 | ▼ 60.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 1 | – | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 98.2% 503
- Cancelled 1.8% 9
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU DAL William P. Hobby Airport – Dallas Love Field | 386 | 4.7 min | 87.4% | 196 |
| CRP HOU Corpus Christi International Airport – William P. Hobby Airport | 301 | 6.8 min | 91.8% | 98 |
| DAL ATL Dallas Love Field – Hartsfield Jackson Atlanta International Airport | 1,158 | 17.7 min | 71.1% | 38 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 21 | 21 | 95.2% | 0 |
| November 2024 | 50 | 50 | 72.0% | 0 |
| December 2024 | 84 | 84 | 67.9% | 0 |
| January 2025 | 32 | 27 | 88.9% | 5 |
| February 2025 | 11 | 11 | 90.9% | 0 |
| March 2025 | 28 | 27 | 88.9% | 1 |
| April 2025 | 16 | 16 | 62.5% | 0 |
| May 2025 | 8 | 7 | 85.7% | 1 |
| June 2025 | 2 | 2 | 50.0% | 0 |
| October 2025 | 36 | 36 | 72.2% | 0 |
| November 2025 | 27 | 27 | 96.3% | 0 |
| December 2025 | 42 | 42 | 85.7% | 0 |
| January 2026 | 54 | 52 | 96.2% | 2 |
| February 2026 | 41 | 41 | 92.7% | 0 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 5 | 5 | 60.0% | 0 |
| June 2026 | 8 | 8 | 87.5% | 0 |
| July 2026 | 16 | 16 | 75.0% | 0 |