WN4507
WN4507 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Atlanta to Houston. Of 279 departures recorded from October 2024 to July 2026, 72.1% left on time, according to the US BTS.
- On-time departures72.1%of 279 flights
- Average delay13.6 min
- July 202618
- Cancelled1.1%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | – | – |
| February | – | 10 | – |
| March | 26 | 39 | ▲ 50.0% |
| April | 7 | 8 | ▲ 14.3% |
| May | – | – | – |
| June | – | 27 | – |
| July | – | 18 | – |
| August | 22 | – | – |
| September | 26 | – | – |
| October | 30 | – | in progress |
| November | 4 | – | – |
| December | 7 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | – | – |
| February | – | 100.0% | – |
| March | 70.8% | 92.1% | ▲ 30.0% |
| April | 57.1% | 75.0% | ▲ 31.3% |
| May | – | – | – |
| June | – | 14.8% | – |
| July | – | 33.3% | – |
| August | 45.5% | – | – |
| September | 76.9% | – | – |
| October | 86.7% | – | in progress |
| November | 100.0% | – | – |
| December | 71.4% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | – | 0 | – |
| March | 2 | 1 | ▼ 50.0% |
| April | 0 | 0 | – |
| May | – | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| 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 98.9% 276
- Cancelled 1.1% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| ATL HOU Hartsfield Jackson Atlanta International Airport – William P. Hobby Airport | 1,118 | 19.6 min | 63.3% | 49 |
| PHX BNA Phoenix Sky Harbor International Airport – Nashville International Airport | 2,326 | 36.0 min | 22.2% | 45 |
| TPA IND Tampa International Airport – Indianapolis International Airport | 1,351 | 21.1 min | 67.7% | 33 |
| SMF AUS Sacramento International Airport – Austin Bergstrom International Airport | 2,380 | 8.7 min | 86.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 100.0% | 0 |
| November 2024 | 19 | 19 | 94.7% | 0 |
| December 2024 | 15 | 15 | 86.7% | 0 |
| January 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 26 | 24 | 70.8% | 2 |
| April 2025 | 7 | 7 | 57.1% | 0 |
| August 2025 | 22 | 22 | 45.5% | 0 |
| September 2025 | 26 | 26 | 76.9% | 0 |
| October 2025 | 30 | 30 | 86.7% | 0 |
| November 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 7 | 7 | 71.4% | 0 |
| February 2026 | 10 | 10 | 100.0% | 0 |
| March 2026 | 39 | 38 | 92.1% | 1 |
| April 2026 | 8 | 8 | 75.0% | 0 |
| June 2026 | 27 | 27 | 14.8% | 0 |
| July 2026 | 18 | 18 | 33.3% | 0 |