WN4345
WN4345 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Sacramento to San Diego. Of 421 departures recorded from October 2024 to July 2026, 72.6% left on time, according to the US BTS.
- On-time departures72.6%of 421 flights
- Average delay15.8 min
- July 202627
- Cancelled0.5%
- Legs flown under this number21
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 | 10 | 23 | ▲ 130.0% |
| February | 7 | 27 | ▲ 285.7% |
| March | 27 | 4 | ▼ 85.2% |
| April | 32 | 10 | ▼ 68.8% |
| May | 30 | 13 | ▼ 56.7% |
| June | 5 | 24 | ▲ 380.0% |
| July | – | 27 | – |
| August | 43 | – | – |
| September | 47 | – | – |
| October | 19 | – | in progress |
| November | 4 | – | – |
| December | 2 | – | – |
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 | 70.0% | 77.3% | ▲ 10.4% |
| February | 100.0% | 40.7% | ▼ 59.3% |
| March | 65.4% | 25.0% | ▼ 61.8% |
| April | 75.0% | 100.0% | ▲ 33.3% |
| May | 50.0% | 100.0% | ▲ 100.0% |
| June | 80.0% | 75.0% | ▼ 6.3% |
| July | – | 63.0% | – |
| August | 79.1% | – | – |
| September | 83.0% | – | – |
| October | 73.7% | – | in progress |
| November | 25.0% | – | – |
| December | 0.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| 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 99.5% 419
- Cancelled 0.5% 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 6.2 min | 89.7% | 58 |
| MCO BWI Orlando International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,269 | 23.6 min | 55.8% | 53 |
| MDW DCA Chicago Midway International Airport – Ronald Reagan Washington National Airport | 964 | 30.8 min | 57.1% | 42 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 9.3 min | 84.2% | 38 |
| CMH TPA John Glenn Columbus International Airport – Tampa International Airport | 1,337 | 23.3 min | 62.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 87.5% | 0 |
| November 2024 | 21 | 21 | 81.0% | 0 |
| December 2024 | 30 | 30 | 80.0% | 0 |
| January 2025 | 10 | 10 | 70.0% | 0 |
| February 2025 | 7 | 7 | 100.0% | 0 |
| March 2025 | 27 | 26 | 65.4% | 1 |
| April 2025 | 32 | 32 | 75.0% | 0 |
| May 2025 | 30 | 30 | 50.0% | 0 |
| June 2025 | 5 | 5 | 80.0% | 0 |
| August 2025 | 43 | 43 | 79.1% | 0 |
| September 2025 | 47 | 47 | 83.0% | 0 |
| October 2025 | 19 | 19 | 73.7% | 0 |
| November 2025 | 4 | 4 | 25.0% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 23 | 22 | 77.3% | 1 |
| February 2026 | 27 | 27 | 40.7% | 0 |
| March 2026 | 4 | 4 | 25.0% | 0 |
| April 2026 | 10 | 10 | 100.0% | 0 |
| May 2026 | 13 | 13 | 100.0% | 0 |
| June 2026 | 24 | 24 | 75.0% | 0 |
| July 2026 | 27 | 27 | 63.0% | 0 |