WN4755
WN4755 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Denver to Nashville. Of 324 departures recorded from October 2024 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 324 flights
- Average delay11.9 min
- July 202630▲ 15.4%vs July 2025
- Cancelled0.3%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 29 | ▲ 1,350.0% |
| February | – | 28 | – |
| March | – | 19 | – |
| April | – | 7 | – |
| May | – | 4 | – |
| June | 22 | 27 | ▲ 22.7% |
| July | 26 | 30 | ▲ 15.4% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 36 | – | in progress |
| November | 6 | – | – |
| December | 21 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 86.2% | ▼ 13.8% |
| February | – | 82.1% | – |
| March | – | 84.2% | – |
| April | – | 57.1% | – |
| May | – | 100.0% | – |
| June | 95.5% | 55.6% | ▼ 41.8% |
| July | 96.2% | 48.3% | ▼ 49.8% |
| August | 76.7% | – | – |
| September | 100.0% | – | – |
| October | 91.7% | – | in progress |
| November | 83.3% | – | – |
| December | 57.1% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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% 323
- Cancelled 0.3% 1
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| DEN BNA Denver International Airport – Nashville International Airport | 1,628 | 4.4 min | 89.7% | 58 |
| TPA CMH Tampa International Airport – John Glenn Columbus International Airport | 1,337 | 25.3 min | 51.8% | 57 |
| TUL MDW Tulsa International Airport – Chicago Midway International Airport | 938 | 1.2 min | 94.1% | 51 |
| LGB HOU Long Beach International Airport – William P. Hobby Airport | 2,207 | 3.9 min | 87.2% | 47 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 0.0% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 2 | 2 | 100.0% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| June 2025 | 22 | 22 | 95.5% | 0 |
| July 2025 | 26 | 26 | 96.2% | 0 |
| August 2025 | 30 | 30 | 76.7% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 36 | 36 | 91.7% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 21 | 21 | 57.1% | 0 |
| January 2026 | 29 | 29 | 86.2% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 19 | 19 | 84.2% | 0 |
| April 2026 | 7 | 7 | 57.1% | 0 |
| May 2026 | 4 | 4 | 100.0% | 0 |
| June 2026 | 27 | 27 | 55.6% | 0 |
| July 2026 | 30 | 29 | 48.3% | 1 |