WN4459
WN4459 (Southwest Airlines) is a multi-stop service on 23 routes, busiest St Louis to Cleveland. Of 564 departures recorded from November 2024 to July 2026, 77.4% left on time, according to the US BTS.
- On-time departures77.4%of 564 flights
- Average delay12.5 min
- July 202630▼ 50.0%vs July 2025
- Cancelled2.1%
- Legs flown under this number23
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 60 | ▲ 122.2% |
| February | 23 | 81 | ▲ 252.2% |
| March | 4 | 31 | ▲ 675.0% |
| April | 12 | 21 | ▲ 75.0% |
| May | 16 | 22 | ▲ 37.5% |
| June | 56 | 28 | ▼ 50.0% |
| July | 60 | 30 | ▼ 50.0% |
| August | 9 | – | – |
| September | – | – | – |
| October | 18 | – | in progress |
| November | 5 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 198 | 273 | ▲ 37.9% |
according to the US BTS · November 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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.8% | 86.8% | ▲ 11.6% |
| February | 77.3% | 76.0% | ▼ 1.7% |
| March | 75.0% | 80.7% | ▲ 7.5% |
| April | 58.3% | 47.6% | ▼ 18.4% |
| May | 62.5% | 22.7% | ▼ 63.6% |
| June | 96.4% | 89.3% | ▼ 7.4% |
| July | 86.7% | 100.0% | ▲ 15.4% |
| August | 77.8% | – | – |
| September | – | – | – |
| October | 50.0% | – | in progress |
| November | 80.0% | – | – |
| December | 72.7% | – | – |
| Year-to-date average (Jan–Jul) | 76.3% | 71.9% | ▼ 5.8% |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 7 | – |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 9 | ▲ 800.0% |
according to the US BTS · November 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 97.9% 552
- Cancelled 2.1% 12
Share of all recorded flights in the period, all legs. · Nov 3, 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 |
|---|---|---|---|---|
| STL CLE St. Louis Lambert International Airport – Cleveland Hopkins International Airport | 783 | 11.3 min | 73.8% | 104 |
| BWI CLT Baltimore/Washington International Thurgood Marshall Airport – Charlotte Douglas International Airport | 581 | 1.9 min | 94.4% | 58 |
| MCO MKE Orlando International Airport – General Mitchell International Airport | 1,719 | -1.6 min | 96.5% | 57 |
| CLT BNA Charlotte Douglas International Airport – Nashville International Airport | 528 | 7.6 min | 84.0% | 53 |
| MCO SAT Orlando International Airport – San Antonio International Airport | 1,672 | -2.1 min | 98.0% | 51 |
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 63.8 min | 18.8% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 23 | 23 | 69.6% | 0 |
| December 2024 | 27 | 27 | 70.4% | 0 |
| January 2025 | 27 | 27 | 77.8% | 0 |
| February 2025 | 23 | 22 | 77.3% | 1 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| April 2025 | 12 | 12 | 58.3% | 0 |
| May 2025 | 16 | 16 | 62.5% | 0 |
| June 2025 | 56 | 56 | 96.4% | 0 |
| July 2025 | 60 | 60 | 86.7% | 0 |
| August 2025 | 9 | 9 | 77.8% | 0 |
| October 2025 | 18 | 16 | 50.0% | 2 |
| November 2025 | 5 | 5 | 80.0% | 0 |
| December 2025 | 11 | 11 | 72.7% | 0 |
| January 2026 | 60 | 53 | 86.8% | 7 |
| February 2026 | 81 | 79 | 76.0% | 2 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 21 | 21 | 47.6% | 0 |
| May 2026 | 22 | 22 | 22.7% | 0 |
| June 2026 | 28 | 28 | 89.3% | 0 |
| July 2026 | 30 | 30 | 100.0% | 0 |