WN4392
WN4392 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Las Vegas to El Paso. Of 445 departures recorded from October 2024 to July 2026, 68.3% left on time, according to the US BTS.
- On-time departures68.3%of 445 flights
- Average delay17.7 min
- July 202653▲ 1,225.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number27
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 | 28 | 3 | ▼ 89.3% |
| February | 34 | 17 | ▼ 50.0% |
| March | 6 | 29 | ▲ 383.3% |
| April | 23 | 6 | ▼ 73.9% |
| May | 32 | – | – |
| June | 8 | 46 | ▲ 475.0% |
| July | 4 | 53 | ▲ 1,225.0% |
| August | 19 | – | – |
| September | 21 | – | – |
| October | 26 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
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 | 82.1% | 66.7% | ▼ 18.8% |
| February | 78.8% | 82.4% | ▲ 4.5% |
| March | 50.0% | 62.1% | ▲ 24.1% |
| April | 73.9% | 83.3% | ▲ 12.7% |
| May | 71.0% | – | – |
| June | 62.5% | 47.8% | ▼ 23.5% |
| July | 66.7% | 43.4% | ▼ 34.9% |
| August | 89.5% | – | – |
| September | 66.7% | – | – |
| October | 80.8% | – | in progress |
| November | 100.0% | – | – |
| December | 54.6% | – | – |
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 | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | – | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| 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 99.3% 442
- Cancelled 0.7% 3
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 |
|---|---|---|---|---|
| LAS ELP Harry Reid International Airport – El Paso International Airport | 938 | 10.0 min | 80.0% | 80 |
| SJC PHX Mineta San Jose International Airport – Phoenix Sky Harbor International Airport | 999 | 12.1 min | 71.9% | 58 |
| AUS HOU Austin Bergstrom International Airport – William P. Hobby Airport | 238 | 44.6 min | 26.5% | 34 |
| TUL STL Tulsa International Airport – St. Louis Lambert International Airport | 563 | 4.1 min | 81.3% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 72.2% | 0 |
| November 2024 | 19 | 19 | 79.0% | 0 |
| December 2024 | 36 | 36 | 77.8% | 0 |
| January 2025 | 28 | 28 | 82.1% | 0 |
| February 2025 | 34 | 33 | 78.8% | 1 |
| March 2025 | 6 | 6 | 50.0% | 0 |
| April 2025 | 23 | 23 | 73.9% | 0 |
| May 2025 | 32 | 31 | 71.0% | 1 |
| June 2025 | 8 | 8 | 62.5% | 0 |
| July 2025 | 4 | 3 | 66.7% | 1 |
| August 2025 | 19 | 19 | 89.5% | 0 |
| September 2025 | 21 | 21 | 66.7% | 0 |
| October 2025 | 26 | 26 | 80.8% | 0 |
| November 2025 | 6 | 6 | 100.0% | 0 |
| December 2025 | 11 | 11 | 54.6% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| February 2026 | 17 | 17 | 82.4% | 0 |
| March 2026 | 29 | 29 | 62.1% | 0 |
| April 2026 | 6 | 6 | 83.3% | 0 |
| June 2026 | 46 | 46 | 47.8% | 0 |
| July 2026 | 53 | 53 | 43.4% | 0 |