WN4390
WN4390 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Santa Ana to Oakland. Of 384 departures recorded from October 2024 to July 2026, 70.3% left on time, according to the US BTS.
- On-time departures70.3%of 384 flights
- Average delay16.4 min
- July 202630▼ 38.8%vs July 2025
- Cancelled1.0%
- Legs flown under this number19
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 | 2 | 3 | ▲ 50.0% |
| February | – | 7 | – |
| March | 26 | 28 | ▲ 7.7% |
| April | 30 | 33 | ▲ 10.0% |
| May | 31 | 37 | ▲ 19.4% |
| June | 46 | 30 | ▼ 34.8% |
| July | 49 | 30 | ▼ 38.8% |
| August | 7 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
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 | 50.0% | 100.0% | ▲ 100.0% |
| February | – | 28.6% | – |
| March | 88.5% | 60.7% | ▼ 31.4% |
| April | 83.3% | 87.9% | ▲ 5.5% |
| May | 51.6% | 91.9% | ▲ 78.0% |
| June | 77.8% | 53.3% | ▼ 31.4% |
| July | 72.3% | 34.5% | ▼ 52.3% |
| August | 57.1% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 75.0% | – | – |
| December | 90.9% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 2 | 1 | ▼ 50.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | 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% 380
- Cancelled 1.0% 4
Share of all recorded flights in the period, all legs. · Oct 28, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SNA OAK John Wayne Orange County International Airport – Oakland San Francisco Bay Airport | 597 | -0.9 min | 93.1% | 58 |
| MCO PIT Orlando International Airport – Pittsburgh International Airport | 1,345 | 22.1 min | 63.8% | 58 |
| SAN LAS San Diego International Airport – Harry Reid International Airport | 417 | 15.8 min | 69.8% | 44 |
| SJC SAN Mineta San Jose International Airport – San Diego International Airport | 671 | 7.5 min | 80.5% | 43 |
| DAL BHM Dallas Love Field – Birmingham-Shuttlesworth International Airport | 942 | 44.8 min | 39.0% | 41 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 19.4 min | 66.7% | 33 |
| BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport | 359 | 2.8 min | 87.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 2 | 2 | 100.0% | 0 |
| November 2024 | 4 | 4 | 50.0% | 0 |
| December 2024 | 4 | 4 | 25.0% | 0 |
| January 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 26 | 26 | 88.5% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 31 | 31 | 51.6% | 0 |
| June 2025 | 46 | 45 | 77.8% | 1 |
| July 2025 | 49 | 47 | 72.3% | 2 |
| August 2025 | 7 | 7 | 57.1% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 11 | 11 | 90.9% | 0 |
| January 2026 | 3 | 3 | 100.0% | 0 |
| February 2026 | 7 | 7 | 28.6% | 0 |
| March 2026 | 28 | 28 | 60.7% | 0 |
| April 2026 | 33 | 33 | 87.9% | 0 |
| May 2026 | 37 | 37 | 91.9% | 0 |
| June 2026 | 30 | 30 | 53.3% | 0 |
| July 2026 | 30 | 29 | 34.5% | 1 |