WN4524
WN4524 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Santa Rosa to Las Vegas. Of 290 departures recorded from October 2024 to July 2026, 85.0% left on time, according to the US BTS.
- On-time departures85.0%of 290 flights
- Average delay6.4 min
- July 202629▲ 625.0%vs July 2025
- Cancelled1.0%
- Legs flown under this number18
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 | 2 | 5 | ▲ 150.0% |
| February | 4 | 2 | ▼ 50.0% |
| March | 26 | 20 | ▼ 23.1% |
| April | 7 | 29 | ▲ 314.3% |
| May | – | 31 | – |
| June | 4 | 31 | ▲ 675.0% |
| July | 4 | 29 | ▲ 625.0% |
| August | 6 | – | – |
| September | 4 | – | – |
| October | 17 | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
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 | 100.0% | 80.0% | ▼ 20.0% |
| February | 100.0% | 50.0% | ▼ 50.0% |
| March | 96.2% | 83.3% | ▼ 13.3% |
| April | 85.7% | 93.1% | ▲ 8.6% |
| May | – | 87.1% | – |
| June | 75.0% | 93.6% | ▲ 24.7% |
| July | 75.0% | 65.5% | ▼ 12.6% |
| August | 83.3% | – | – |
| September | 100.0% | – | – |
| October | 82.4% | – | in progress |
| November | 80.8% | – | – |
| 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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 99.0% 287
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| STS LAS Charles M. Schulz Sonoma County Airport – Harry Reid International Airport | 729 | 3.7 min | 89.7% | 58 |
| LGB SJC Long Beach International Airport – Mineta San Jose International Airport | 522 | 6.2 min | 83.3% | 55 |
| BWI CMH Baltimore/Washington International Thurgood Marshall Airport – John Glenn Columbus International Airport | 541 | 9.2 min | 82.9% | 41 |
| PHX BWI Phoenix Sky Harbor International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,209 | 2.7 min | 93.8% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 75.0% | 0 |
| November 2024 | 3 | 3 | 100.0% | 0 |
| December 2024 | 3 | 3 | 66.7% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| February 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 26 | 26 | 96.2% | 0 |
| April 2025 | 7 | 7 | 85.7% | 0 |
| June 2025 | 4 | 4 | 75.0% | 0 |
| July 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 6 | 6 | 83.3% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 17 | 17 | 82.4% | 0 |
| November 2025 | 26 | 26 | 80.8% | 0 |
| December 2025 | 29 | 28 | 85.7% | 1 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 2 | 2 | 50.0% | 0 |
| March 2026 | 20 | 18 | 83.3% | 2 |
| April 2026 | 29 | 29 | 93.1% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 31 | 31 | 93.6% | 0 |
| July 2026 | 29 | 29 | 65.5% | 0 |