WN4359
WN4359 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Santa Ana to San Jose. Of 357 departures recorded from October 2024 to July 2026, 69.9% left on time, according to the US BTS.
- On-time departures69.9%of 357 flights
- Average delay12.0 min
- July 202627
- Cancelled0.6%
- Legs flown under this number17
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 | 12 | – | – |
| February | 7 | 5 | ▼ 28.6% |
| March | 25 | 27 | ▲ 8.0% |
| April | 26 | 27 | ▲ 3.8% |
| May | 26 | 26 | 0.0% |
| June | 4 | 26 | ▲ 550.0% |
| July | – | 27 | – |
| August | 15 | – | – |
| September | 17 | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| 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 | 80.0% | – | – |
| February | 100.0% | 80.0% | ▼ 20.0% |
| March | 68.0% | 92.6% | ▲ 36.2% |
| April | 69.2% | 70.4% | ▲ 1.6% |
| May | 73.1% | 65.4% | ▼ 10.5% |
| June | 100.0% | 46.2% | ▼ 53.8% |
| July | – | 22.2% | – |
| August | 66.7% | – | – |
| September | 58.8% | – | – |
| October | – | – | 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 | 2 | – | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | 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 99.4% 355
- Cancelled 0.6% 2
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 2.8 min | 87.1% | 72 |
| SMF PDX Sacramento International Airport – Portland International Airport | 771 | 13.6 min | 66.0% | 50 |
| STL LAS St. Louis Lambert International Airport – Harry Reid International Airport | 2,202 | 28.9 min | 30.6% | 49 |
| PDX SJC Portland International Airport – Mineta San Jose International Airport | 916 | 12.2 min | 75.5% | 49 |
| SAN HOU San Diego International Airport – William P. Hobby Airport | 2,109 | 3.1 min | 94.1% | 34 |
| SNA AUS John Wayne Orange County International Airport – Austin Bergstrom International Airport | 1,942 | 18.2 min | 62.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 80.8% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 30 | 30 | 76.7% | 0 |
| January 2025 | 12 | 10 | 80.0% | 2 |
| February 2025 | 7 | 7 | 100.0% | 0 |
| March 2025 | 25 | 25 | 68.0% | 0 |
| April 2025 | 26 | 26 | 69.2% | 0 |
| May 2025 | 26 | 26 | 73.1% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 15 | 15 | 66.7% | 0 |
| September 2025 | 17 | 17 | 58.8% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| February 2026 | 5 | 5 | 80.0% | 0 |
| March 2026 | 27 | 27 | 92.6% | 0 |
| April 2026 | 27 | 27 | 70.4% | 0 |
| May 2026 | 26 | 26 | 65.4% | 0 |
| June 2026 | 26 | 26 | 46.2% | 0 |
| July 2026 | 27 | 27 | 22.2% | 0 |