WN20
WN20 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Houston to Dallas. Of 252 departures recorded from October 2024 to July 2026, 83.5% left on time, according to the US BTS.
- On-time departures83.5%of 252 flights
- Average delay8.1 min
- July 202618▲ 125.0%vs July 2025
- Cancelled3.6%
- Legs flown under this number11
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 | – | 56 | – |
| February | – | 35 | – |
| March | 4 | 23 | ▲ 475.0% |
| April | 7 | 20 | ▲ 185.7% |
| May | 6 | 16 | ▲ 166.7% |
| June | 10 | 18 | ▲ 80.0% |
| July | 8 | 18 | ▲ 125.0% |
| August | 2 | – | – |
| September | – | – | – |
| October | 18 | – | in progress |
| November | 2 | – | – |
| 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 98.1% | – |
| February | – | 85.7% | – |
| March | 100.0% | 87.0% | ▼ 13.0% |
| April | 83.3% | 100.0% | ▲ 20.0% |
| May | 100.0% | 64.3% | ▼ 35.7% |
| June | 60.0% | 83.3% | ▲ 38.9% |
| July | 62.5% | 60.0% | ▼ 4.0% |
| August | 0.0% | – | – |
| September | – | – | – |
| October | 66.7% | – | 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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 3 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 2 | – |
| June | 0 | 0 | – |
| July | 0 | 3 | – |
| August | 0 | – | – |
| September | – | – | – |
| 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 96.4% 243
- Cancelled 3.6% 9
Share of all recorded flights in the period, all legs. · Oct 14, 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 | 7.8 min | 85.6% | 126 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 87.5% | 0 |
| November 2024 | 1 | 1 | 100.0% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| April 2025 | 7 | 6 | 83.3% | 1 |
| May 2025 | 6 | 6 | 100.0% | 0 |
| June 2025 | 10 | 10 | 60.0% | 0 |
| July 2025 | 8 | 8 | 62.5% | 0 |
| August 2025 | 2 | 2 | 0.0% | 0 |
| October 2025 | 18 | 18 | 66.7% | 0 |
| November 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 56 | 53 | 98.1% | 3 |
| February 2026 | 35 | 35 | 85.7% | 0 |
| March 2026 | 23 | 23 | 87.0% | 0 |
| April 2026 | 20 | 20 | 100.0% | 0 |
| May 2026 | 16 | 14 | 64.3% | 2 |
| June 2026 | 18 | 18 | 83.3% | 0 |
| July 2026 | 18 | 15 | 60.0% | 3 |