WN4599
WN4599 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Santa Ana to Sacramento. Of 390 departures recorded from October 2024 to July 2026, 76.7% left on time, according to the US BTS.
- On-time departures76.7%of 390 flights
- Average delay11.4 min
- July 202623▼ 25.8%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 periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 47 | – |
| February | – | 37 | – |
| March | – | 27 | – |
| April | – | 29 | – |
| May | – | 31 | – |
| June | 26 | 22 | ▼ 15.4% |
| July | 31 | 23 | ▼ 25.8% |
| August | 4 | – | – |
| September | – | – | – |
| October | 26 | – | in progress |
| November | 39 | – | – |
| December | 26 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 83.0% | – |
| February | – | 81.1% | – |
| March | – | 85.2% | – |
| April | – | 62.1% | – |
| May | – | 67.7% | – |
| June | 88.0% | 68.2% | ▼ 22.5% |
| July | 82.1% | 60.9% | ▼ 25.9% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 69.2% | – | in progress |
| November | 61.5% | – | – |
| December | 96.2% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 3 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| 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 99.0% 386
- Cancelled 1.0% 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 1.0 min | 86.0% | 61 |
| TUS LAS Tucson International Airport – Harry Reid International Airport | 587 | 27.3 min | 62.1% | 58 |
| MSY MCO Louis Armstrong New Orleans International Airport – Orlando International Airport | 886 | 5.8 min | 84.5% | 58 |
| BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport | 359 | 16.9 min | 78.3% | 46 |
| DJT BNA President Donald J. Trump International Airport – Nashville International Airport | 1,221 | 12.0 min | 64.3% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 90.0% | 0 |
| November 2024 | 11 | 11 | 90.9% | 0 |
| December 2024 | 1 | 1 | 100.0% | 0 |
| June 2025 | 26 | 25 | 88.0% | 1 |
| July 2025 | 31 | 28 | 82.1% | 3 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 26 | 26 | 69.2% | 0 |
| November 2025 | 39 | 39 | 61.5% | 0 |
| December 2025 | 26 | 26 | 96.2% | 0 |
| January 2026 | 47 | 47 | 83.0% | 0 |
| February 2026 | 37 | 37 | 81.1% | 0 |
| March 2026 | 27 | 27 | 85.2% | 0 |
| April 2026 | 29 | 29 | 62.1% | 0 |
| May 2026 | 31 | 31 | 67.7% | 0 |
| June 2026 | 22 | 22 | 68.2% | 0 |
| July 2026 | 23 | 23 | 60.9% | 0 |