WN4258
WN4258 (Southwest Airlines) is a multi-stop service on 31 routes, busiest San Diego to San Jose. Of 277 departures recorded from October 2024 to July 2026, 68.5% left on time, according to the US BTS.
- On-time departures68.5%of 277 flights
- Average delay16.0 min
- July 202618
- Cancelled1.4%
- Legs flown under this number31
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 | 4 | 5 | ▲ 25.0% |
| February | – | 8 | – |
| March | 26 | 14 | ▼ 46.2% |
| April | 7 | 18 | ▲ 157.1% |
| May | 5 | 18 | ▲ 260.0% |
| June | – | 14 | – |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | 26 | – | in progress |
| November | 27 | – | – |
| 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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.0% | 75.0% | 0.0% |
| February | – | 87.5% | – |
| March | 73.1% | 50.0% | ▼ 31.6% |
| April | 57.1% | 77.8% | ▲ 36.1% |
| May | 100.0% | 77.8% | ▼ 22.2% |
| June | – | 28.6% | – |
| July | – | 25.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | 73.1% | – | in progress |
| November | 66.7% | – | – |
| December | 75.9% | – | – |
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 | 0 | 1 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | – | 0 | – |
| July | – | 2 | – |
| August | – | – | – |
| September | – | – | – |
| 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 98.6% 273
- Cancelled 1.4% 4
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN SJC San Diego International Airport – Mineta San Jose International Airport | 671 | 15.1 min | 72.9% | 60 |
| LAS CLE Harry Reid International Airport – Cleveland Hopkins International Airport | 2,929 | 6.0 min | 85.3% | 34 |
| BNA CLE Nashville International Airport – Cleveland Hopkins International Airport | 721 | 18.5 min | 69.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 18 | 17 | 82.4% | 1 |
| December 2024 | 20 | 20 | 70.0% | 0 |
| January 2025 | 4 | 4 | 75.0% | 0 |
| March 2025 | 26 | 26 | 73.1% | 0 |
| April 2025 | 7 | 7 | 57.1% | 0 |
| May 2025 | 5 | 5 | 100.0% | 0 |
| October 2025 | 26 | 26 | 73.1% | 0 |
| November 2025 | 27 | 27 | 66.7% | 0 |
| December 2025 | 29 | 29 | 75.9% | 0 |
| January 2026 | 5 | 4 | 75.0% | 1 |
| February 2026 | 8 | 8 | 87.5% | 0 |
| March 2026 | 14 | 14 | 50.0% | 0 |
| April 2026 | 18 | 18 | 77.8% | 0 |
| May 2026 | 18 | 18 | 77.8% | 0 |
| June 2026 | 14 | 14 | 28.6% | 0 |
| July 2026 | 18 | 16 | 25.0% | 2 |