WN4010
WN4010 (Southwest Airlines) is a multi-stop service on 27 routes, busiest West Palm Beach to Islip. Of 434 departures recorded from October 2024 to July 2026, 79.9% left on time, according to the US BTS.
- On-time departures79.9%of 434 flights
- Average delay9.4 min
- July 202621▼ 40.0%vs July 2025
- Cancelled1.4%
- Legs flown under this number27
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 22 | ▼ 18.5% |
| February | 18 | 31 | ▲ 72.2% |
| March | 8 | 27 | ▲ 237.5% |
| April | 1 | 18 | ▲ 1,700.0% |
| May | 1 | 18 | ▲ 1,700.0% |
| June | 30 | 18 | ▼ 40.0% |
| July | 35 | 21 | ▼ 40.0% |
| August | 33 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 120 | 155 | ▲ 29.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.8% | 90.9% | ▲ 12.6% |
| February | 77.8% | 93.1% | ▲ 19.7% |
| March | 87.5% | 96.0% | ▲ 9.7% |
| April | 0.0% | 77.8% | – |
| May | 100.0% | 72.2% | ▼ 27.8% |
| June | 93.3% | 55.6% | ▼ 40.5% |
| July | 88.6% | 47.6% | ▼ 46.2% |
| August | 87.9% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 57.1% | – | – |
| December | 61.3% | – | – |
| Year-to-date average (Jan–Jul) | 75.4% | 76.2% | ▲ 1.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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% 428
- Cancelled 1.4% 6
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DJT ISP President Donald J. Trump International Airport – Long Island MacArthur Airport | 1,696 | 28.3 min | 59.4% | 64 |
| BNA MDW Nashville International Airport – Chicago Midway International Airport | 636 | 3.3 min | 90.2% | 61 |
| PHX ABQ Phoenix Sky Harbor International Airport – Albuquerque International Sunport | 527 | 1.0 min | 94.8% | 59 |
| TPA BWI Tampa International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,358 | 29.4 min | 44.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 72.7% | 0 |
| November 2024 | 7 | 7 | 100.0% | 0 |
| December 2024 | 18 | 18 | 72.2% | 0 |
| January 2025 | 27 | 26 | 80.8% | 1 |
| February 2025 | 18 | 18 | 77.8% | 0 |
| March 2025 | 8 | 8 | 87.5% | 0 |
| April 2025 | 1 | 1 | 0.0% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 35 | 35 | 88.6% | 0 |
| August 2025 | 33 | 33 | 87.9% | 0 |
| September 2025 | 30 | 29 | 100.0% | 1 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 28 | 28 | 57.1% | 0 |
| December 2025 | 31 | 31 | 61.3% | 0 |
| January 2026 | 22 | 22 | 90.9% | 0 |
| February 2026 | 31 | 29 | 93.1% | 2 |
| March 2026 | 27 | 25 | 96.0% | 2 |
| April 2026 | 18 | 18 | 77.8% | 0 |
| May 2026 | 18 | 18 | 72.2% | 0 |
| June 2026 | 18 | 18 | 55.6% | 0 |
| July 2026 | 21 | 21 | 47.6% | 0 |