WN4023
WN4023 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Las Vegas to Reno. Of 322 departures recorded from October 2024 to July 2026, 87.7% left on time, according to the US BTS.
- On-time departures87.7%of 322 flights
- Average delay6.1 min
- July 202630
- Cancelled1.6%
- Legs flown under this number23
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 79 | – | – |
| February | 55 | 13 | ▼ 76.4% |
| March | 15 | 31 | ▲ 106.7% |
| April | 7 | 6 | ▼ 14.3% |
| May | 9 | 2 | ▼ 77.8% |
| June | 1 | 27 | ▲ 2,600.0% |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 3 | – | – |
| December | 4 | – | – |
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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 84.0% | – | – |
| February | 87.3% | 92.3% | ▲ 5.8% |
| March | 66.7% | 86.7% | ▲ 30.0% |
| April | 100.0% | 100.0% | 0.0% |
| May | 100.0% | 50.0% | ▼ 50.0% |
| June | 100.0% | 92.6% | ▼ 7.4% |
| July | – | 96.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
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 periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | – | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | 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 98.4% 317
- Cancelled 1.6% 5
Share of all recorded flights in the period, all legs. · Oct 31, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | 3.1 min | 89.3% | 75 |
| TPA HOU Tampa International Airport – William P. Hobby Airport | 1,255 | -0.3 min | 94.6% | 56 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 21 | 21 | 81.0% | 0 |
| December 2024 | 18 | 18 | 88.9% | 0 |
| January 2025 | 79 | 75 | 84.0% | 4 |
| February 2025 | 55 | 55 | 87.3% | 0 |
| March 2025 | 15 | 15 | 66.7% | 0 |
| April 2025 | 7 | 7 | 100.0% | 0 |
| May 2025 | 9 | 9 | 100.0% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 3 | 3 | 100.0% | 0 |
| December 2025 | 4 | 4 | 100.0% | 0 |
| February 2026 | 13 | 13 | 92.3% | 0 |
| March 2026 | 31 | 30 | 86.7% | 1 |
| April 2026 | 6 | 6 | 100.0% | 0 |
| May 2026 | 2 | 2 | 50.0% | 0 |
| June 2026 | 27 | 27 | 92.6% | 0 |
| July 2026 | 30 | 30 | 96.7% | 0 |