WN539
WN539 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Kansas City to New York. Of 681 departures recorded from October 2024 to July 2026, 70.0% left on time, according to the US BTS.
- On-time departures70.0%of 681 flights
- Average delay16.4 min
- July 202638▲ 8.6%vs July 2025
- Cancelled0.6%
- Legs flown under this number32
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 | 9 | 31 | ▲ 244.4% |
| February | 4 | 35 | ▲ 775.0% |
| March | 27 | 43 | ▲ 59.3% |
| April | 30 | 32 | ▲ 6.7% |
| May | 32 | 30 | ▼ 6.3% |
| June | 34 | 38 | ▲ 11.8% |
| July | 35 | 38 | ▲ 8.6% |
| August | 43 | – | – |
| September | 43 | – | – |
| October | 35 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 171 | 247 | ▲ 44.4% |
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 | 77.8% | 89.7% | ▲ 15.3% |
| February | 75.0% | 85.7% | ▲ 14.3% |
| March | 96.3% | 81.4% | ▼ 15.5% |
| April | 79.3% | 71.9% | ▼ 9.4% |
| May | 68.8% | 56.7% | ▼ 17.6% |
| June | 58.8% | 39.5% | ▼ 32.9% |
| July | 47.1% | 39.5% | ▼ 16.1% |
| August | 65.1% | – | – |
| September | 58.1% | – | – |
| October | 51.4% | – | in progress |
| November | 88.9% | – | – |
| December | 69.0% | – | – |
| Year-to-date average (Jan–Jul) | 71.9% | 66.3% | ▼ 7.7% |
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 | 0 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 99.4% 677
- Cancelled 0.6% 4
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 92.3% | 0 |
| November 2024 | 30 | 30 | 100.0% | 0 |
| December 2024 | 30 | 30 | 90.0% | 0 |
| January 2025 | 9 | 9 | 77.8% | 0 |
| February 2025 | 4 | 4 | 75.0% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 30 | 29 | 79.3% | 1 |
| May 2025 | 32 | 32 | 68.8% | 0 |
| June 2025 | 34 | 34 | 58.8% | 0 |
| July 2025 | 35 | 34 | 47.1% | 1 |
| August 2025 | 43 | 43 | 65.1% | 0 |
| September 2025 | 43 | 43 | 58.1% | 0 |
| October 2025 | 35 | 35 | 51.4% | 0 |
| November 2025 | 27 | 27 | 88.9% | 0 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 31 | 29 | 89.7% | 2 |
| February 2026 | 35 | 35 | 85.7% | 0 |
| March 2026 | 43 | 43 | 81.4% | 0 |
| April 2026 | 32 | 32 | 71.9% | 0 |
| May 2026 | 30 | 30 | 56.7% | 0 |
| June 2026 | 38 | 38 | 39.5% | 0 |
| July 2026 | 38 | 38 | 39.5% | 0 |