WN4427
WN4427 (Southwest Airlines) is a multi-stop service on 15 routes, busiest Honolulu to Las Vegas. Of 354 departures recorded from October 2024 to July 2026, 81.6% left on time, according to the US BTS.
- On-time departures81.6%of 354 flights
- Average delay10.4 min
- July 202630
- Cancelled0.3%
- 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 periods12 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 7 | 5 | ▼ 28.6% |
| February | – | – | – |
| March | – | 26 | – |
| April | 23 | 33 | ▲ 43.5% |
| May | 31 | 36 | ▲ 16.1% |
| June | 4 | 30 | ▲ 650.0% |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 8 | – | – |
| December | 20 | – | – |
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 periods12 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 42.9% | 60.0% | ▲ 40.0% |
| February | – | – | – |
| March | – | 73.1% | – |
| April | 100.0% | 90.9% | ▼ 9.1% |
| May | 90.3% | 91.4% | ▲ 1.2% |
| June | 100.0% | 80.0% | ▼ 20.0% |
| July | – | 90.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 87.5% | – | – |
| December | 45.0% | – | – |
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 periods12 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | – | – |
| March | – | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| 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 99.7% 353
- Cancelled 0.3% 1
Share of all recorded flights in the period, all legs. · Oct 15, 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 |
|---|---|---|---|---|
| HNL LAS Daniel K. Inouye International Airport – Harry Reid International Airport | 4,441 | 0.7 min | 94.8% | 58 |
| STL ATL St. Louis Lambert International Airport – Hartsfield Jackson Atlanta International Airport | 779 | 0.3 min | 96.5% | 58 |
| BNA CMH Nashville International Airport – John Glenn Columbus International Airport | 543 | 14.0 min | 84.2% | 57 |
| MDW ELP Chicago Midway International Airport – El Paso International Airport | 1,988 | 16.8 min | 84.8% | 46 |
| SFO BWI San Francisco International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,944 | 12.8 min | 71.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| November 2024 | 43 | 43 | 74.4% | 0 |
| December 2024 | 52 | 52 | 78.9% | 0 |
| January 2025 | 7 | 7 | 42.9% | 0 |
| April 2025 | 23 | 23 | 100.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 8 | 8 | 87.5% | 0 |
| December 2025 | 20 | 20 | 45.0% | 0 |
| January 2026 | 5 | 5 | 60.0% | 0 |
| March 2026 | 26 | 26 | 73.1% | 0 |
| April 2026 | 33 | 33 | 90.9% | 0 |
| May 2026 | 36 | 35 | 91.4% | 1 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 30 | 30 | 90.0% | 0 |