WN1636
WN1636 (Southwest Airlines) is a multi-stop service on 14 routes, busiest Houston to Dallas. Of 715 departures recorded from October 2024 to July 2026, 91.0% left on time, according to the US BTS.
- On-time departures91.0%of 715 flights
- Average delay1.6 min
- July 20269▼ 86.6%vs July 2025
- Cancelled0.7%
- Legs flown under this number14
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 | 14 | 9 | ▼ 35.7% |
| February | 19 | 25 | ▲ 31.6% |
| March | 25 | 57 | ▲ 128.0% |
| April | 31 | 39 | ▲ 25.8% |
| May | 31 | 34 | ▲ 9.7% |
| June | 73 | 10 | ▼ 86.3% |
| July | 67 | 9 | ▼ 86.6% |
| August | 34 | – | – |
| September | 26 | – | – |
| October | 35 | – | in progress |
| November | 37 | – | – |
| December | 42 | – | – |
| Year to date (Jan–Jul) | 260 | 183 | ▼ 29.6% |
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 | 92.9% | 100.0% | ▲ 7.7% |
| February | 100.0% | 100.0% | 0.0% |
| March | 95.8% | 87.7% | ▼ 8.5% |
| April | 93.6% | 94.6% | ▲ 1.1% |
| May | 93.6% | 94.1% | ▲ 0.6% |
| June | 74.0% | 100.0% | ▲ 35.2% |
| July | 86.6% | 88.9% | ▲ 2.7% |
| August | 82.4% | – | – |
| September | 96.2% | – | – |
| October | 82.9% | – | in progress |
| November | 97.2% | – | – |
| December | 97.6% | – | – |
| Year-to-date average (Jan–Jul) | 90.9% | 95.0% | ▲ 4.6% |
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 | 1 | 0 | ▼ 100.0% |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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 99.3% 710
- Cancelled 0.7% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU DAL William P. Hobby Airport – Dallas Love Field | 386 | -0.9 min | 95.3% | 495 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 43 | 43 | 100.0% | 0 |
| December 2024 | 35 | 35 | 97.1% | 0 |
| January 2025 | 14 | 14 | 92.9% | 0 |
| February 2025 | 19 | 19 | 100.0% | 0 |
| March 2025 | 25 | 24 | 95.8% | 1 |
| April 2025 | 31 | 31 | 93.6% | 0 |
| May 2025 | 31 | 31 | 93.6% | 0 |
| June 2025 | 73 | 73 | 74.0% | 0 |
| July 2025 | 67 | 67 | 86.6% | 0 |
| August 2025 | 34 | 34 | 82.4% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 35 | 35 | 82.9% | 0 |
| November 2025 | 37 | 36 | 97.2% | 1 |
| December 2025 | 42 | 42 | 97.6% | 0 |
| January 2026 | 9 | 8 | 100.0% | 1 |
| February 2026 | 25 | 25 | 100.0% | 0 |
| March 2026 | 57 | 57 | 87.7% | 0 |
| April 2026 | 39 | 37 | 94.6% | 2 |
| May 2026 | 34 | 34 | 94.1% | 0 |
| June 2026 | 10 | 10 | 100.0% | 0 |
| July 2026 | 9 | 9 | 88.9% | 0 |