WN4370
WN4370 (Southwest Airlines) is a multi-stop service on 15 routes, busiest Sacramento to Long Beach. Of 303 departures recorded from October 2024 to July 2026, 78.7% left on time, according to the US BTS.
- On-time departures78.7%of 303 flights
- Average delay9.1 min
- July 202621
- Cancelled1.0%
- Legs flown under this number15
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 5 | – |
| February | 8 | 10 | ▲ 25.0% |
| March | 13 | 29 | ▲ 123.1% |
| April | 20 | 17 | ▼ 15.0% |
| May | 22 | 14 | ▼ 36.4% |
| June | 3 | 22 | ▲ 633.3% |
| July | – | 21 | – |
| August | 19 | – | – |
| September | 21 | – | – |
| October | – | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 60.0% | – |
| February | 100.0% | 80.0% | ▼ 20.0% |
| March | 92.3% | 65.5% | ▼ 29.0% |
| April | 80.0% | 88.2% | ▲ 10.3% |
| May | 57.1% | 85.7% | ▲ 50.0% |
| June | 66.7% | 71.4% | ▲ 7.1% |
| July | – | 61.9% | – |
| August | 100.0% | – | – |
| September | 95.2% | – | – |
| October | – | – | in progress |
| November | 82.1% | – | – |
| December | 70.0% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 1 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | 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% 300
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| SMF LGB Sacramento International Airport – Long Beach International Airport | 624 | 7.6 min | 74.6% | 64 |
| BNA PNS Nashville International Airport – Pensacola International Airport | 630 | 16.8 min | 70.7% | 42 |
| BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport | 359 | 14.9 min | 65.0% | 41 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | -1.7 min | 97.5% | 40 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 1 | 1 | 0.0% | 0 |
| December 2024 | 2 | 2 | 100.0% | 0 |
| February 2025 | 8 | 8 | 100.0% | 0 |
| March 2025 | 13 | 13 | 92.3% | 0 |
| April 2025 | 20 | 20 | 80.0% | 0 |
| May 2025 | 22 | 21 | 57.1% | 1 |
| June 2025 | 3 | 3 | 66.7% | 0 |
| August 2025 | 19 | 19 | 100.0% | 0 |
| September 2025 | 21 | 21 | 95.2% | 0 |
| November 2025 | 28 | 28 | 82.1% | 0 |
| December 2025 | 31 | 30 | 70.0% | 1 |
| January 2026 | 5 | 5 | 60.0% | 0 |
| February 2026 | 10 | 10 | 80.0% | 0 |
| March 2026 | 29 | 29 | 65.5% | 0 |
| April 2026 | 17 | 17 | 88.2% | 0 |
| May 2026 | 14 | 14 | 85.7% | 0 |
| June 2026 | 22 | 21 | 71.4% | 1 |
| July 2026 | 21 | 21 | 61.9% | 0 |