WN4131
WN4131 (Southwest Airlines) is a multi-stop service on 25 routes, busiest Honolulu to Hilo. Of 476 departures recorded from October 2024 to July 2026, 78.9% left on time, according to the US BTS.
- On-time departures78.9%of 476 flights
- Average delay8.7 min
- July 202614▼ 53.3%vs July 2025
- Cancelled0.4%
- Legs flown under this number25
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 | 31 | 5 | ▼ 83.9% |
| February | 28 | – | – |
| March | 5 | 11 | ▲ 120.0% |
| April | 23 | 30 | ▲ 30.4% |
| May | 31 | 34 | ▲ 9.7% |
| June | 30 | 15 | ▼ 50.0% |
| July | 30 | 14 | ▼ 53.3% |
| August | 4 | – | – |
| September | – | – | – |
| October | 76 | – | in progress |
| November | 7 | – | – |
| 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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 87.1% | 100.0% | ▲ 14.8% |
| February | 89.3% | – | – |
| March | 100.0% | 100.0% | 0.0% |
| April | 87.0% | 72.4% | ▼ 16.7% |
| May | 83.9% | 70.6% | ▼ 15.8% |
| June | 76.7% | 26.7% | ▼ 65.2% |
| July | 63.3% | 21.4% | ▼ 66.2% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | 88.0% | – | in progress |
| November | 100.0% | – | – |
| December | 72.7% | – | – |
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 | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 0 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 1 | – | 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 99.6% 474
- Cancelled 0.4% 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 |
|---|---|---|---|---|
| HNL ITO Daniel K. Inouye International Airport – Hilo International Airport | 349 | 2.0 min | 91.0% | 122 |
| STL TPA St. Louis Lambert International Airport – Tampa International Airport | 1,400 | 14.7 min | 68.3% | 60 |
| ITO HNL Hilo International Airport – Daniel K. Inouye International Airport | 349 | 5.8 min | 86.2% | 58 |
| SAN SMF San Diego International Airport – Sacramento International Airport | 773 | 15.9 min | 67.9% | 57 |
| TUL MDW Tulsa International Airport – Chicago Midway International Airport | 938 | -0.6 min | 93.1% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 30 | 30 | 73.3% | 0 |
| November 2024 | 30 | 30 | 86.7% | 0 |
| December 2024 | 31 | 31 | 93.6% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 89.3% | 0 |
| March 2025 | 5 | 5 | 100.0% | 0 |
| April 2025 | 23 | 23 | 87.0% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 30 | 30 | 63.3% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 76 | 75 | 88.0% | 1 |
| November 2025 | 7 | 7 | 100.0% | 0 |
| December 2025 | 11 | 11 | 72.7% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| March 2026 | 11 | 11 | 100.0% | 0 |
| April 2026 | 30 | 29 | 72.4% | 1 |
| May 2026 | 34 | 34 | 70.6% | 0 |
| June 2026 | 15 | 15 | 26.7% | 0 |
| July 2026 | 14 | 14 | 21.4% | 0 |