WN4281
WN4281 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Burbank to San Jose. Of 433 departures recorded from October 2024 to July 2026, 70.7% left on time, according to the US BTS.
- On-time departures70.7%of 433 flights
- Average delay13.8 min
- July 202621▼ 32.3%vs July 2025
- Cancelled1.4%
- 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 periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 26 | ▼ 3.7% |
| February | 24 | 27 | ▲ 12.5% |
| March | 4 | 8 | ▲ 100.0% |
| April | 32 | 31 | ▼ 3.1% |
| May | 44 | 39 | ▼ 11.4% |
| June | 31 | 19 | ▼ 38.7% |
| July | 31 | 21 | ▼ 32.3% |
| August | 4 | – | – |
| September | – | – | – |
| October | 16 | – | in progress |
| November | 2 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 193 | 171 | ▼ 11.4% |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.2% | 92.0% | ▼ 4.3% |
| February | 100.0% | 92.0% | ▼ 8.0% |
| March | 25.0% | 75.0% | ▲ 200.0% |
| April | 56.3% | 64.5% | ▲ 14.7% |
| May | 47.7% | 74.4% | ▲ 55.8% |
| June | 73.3% | 21.1% | ▼ 71.3% |
| July | 71.0% | 45.0% | ▼ 36.6% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 87.5% | – | in progress |
| November | 0.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 67.1% | 66.3% | ▼ 1.2% |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 1 | 0.0% |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 100.0% |
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 98.6% 427
- Cancelled 1.4% 6
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BUR SJC Hollywood Burbank/Bob Hope Airport – Mineta San Jose International Airport | 477 | 3.7 min | 87.8% | 75 |
| SMF LAX Sacramento International Airport – Los Angeles International Airport | 600 | 20.4 min | 54.4% | 57 |
| MSY BWI Louis Armstrong New Orleans International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,607 | -0.3 min | 92.6% | 57 |
| DEN TUS Denver International Airport – Tucson International Airport | 1,029 | 13.8 min | 70.2% | 57 |
| OAK BUR Oakland San Francisco Bay Airport – Hollywood Burbank/Bob Hope Airport | 523 | 12.1 min | 76.5% | 52 |
| MKE BWI General Mitchell International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,030 | 40.9 min | 27.3% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 13 | 13 | 84.6% | 0 |
| December 2024 | 24 | 24 | 75.0% | 0 |
| January 2025 | 27 | 26 | 96.2% | 1 |
| February 2025 | 24 | 24 | 100.0% | 0 |
| March 2025 | 4 | 4 | 25.0% | 0 |
| April 2025 | 32 | 32 | 56.3% | 0 |
| May 2025 | 44 | 44 | 47.7% | 0 |
| June 2025 | 31 | 30 | 73.3% | 1 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 16 | 16 | 87.5% | 0 |
| November 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 26 | 25 | 92.0% | 1 |
| February 2026 | 27 | 25 | 92.0% | 2 |
| March 2026 | 8 | 8 | 75.0% | 0 |
| April 2026 | 31 | 31 | 64.5% | 0 |
| May 2026 | 39 | 39 | 74.4% | 0 |
| June 2026 | 19 | 19 | 21.1% | 0 |
| July 2026 | 21 | 20 | 45.0% | 1 |