WN4335
WN4335 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Atlanta to Houston. Of 409 departures recorded from October 2024 to July 2026, 82.7% left on time, according to the US BTS.
- On-time departures82.7%of 409 flights
- Average delay7.8 min
- July 202618
- Cancelled1.2%
- 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 periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 32 | 8 | ▼ 75.0% |
| February | 24 | 2 | ▼ 91.7% |
| March | 4 | 27 | ▲ 575.0% |
| April | 6 | 30 | ▲ 400.0% |
| May | 9 | 31 | ▲ 244.4% |
| June | 1 | 19 | ▲ 1,800.0% |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | 29 | – | in progress |
| November | 19 | – | – |
| December | 32 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 83.3% | 75.0% | ▼ 10.0% |
| February | 54.2% | 50.0% | ▼ 7.7% |
| March | 100.0% | 61.5% | ▼ 38.5% |
| April | 83.3% | 93.1% | ▲ 11.7% |
| May | 77.8% | 90.3% | ▲ 16.1% |
| June | 0.0% | 84.2% | – |
| July | – | 66.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 96.6% | – | in progress |
| November | 79.0% | – | – |
| December | 74.2% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 98.8% 404
- Cancelled 1.2% 5
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ATL HOU Hartsfield Jackson Atlanta International Airport – William P. Hobby Airport | 1,118 | 9.6 min | 73.6% | 74 |
| SMF HNL Sacramento International Airport – Daniel K. Inouye International Airport | 3,960 | 0.8 min | 93.1% | 58 |
| ELP LAS El Paso International Airport – Harry Reid International Airport | 938 | 13.8 min | 73.5% | 34 |
| RSW ORD Southwest Florida International Airport – Chicago O'Hare International Airport | 1,807 | 36.0 min | 64.5% | 33 |
| RSW BWI Southwest Florida International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,483 | -4.7 min | 96.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 94.7% | 0 |
| November 2024 | 42 | 42 | 97.6% | 0 |
| December 2024 | 57 | 57 | 86.0% | 0 |
| January 2025 | 32 | 30 | 83.3% | 2 |
| February 2025 | 24 | 24 | 54.2% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| April 2025 | 6 | 6 | 83.3% | 0 |
| May 2025 | 9 | 9 | 77.8% | 0 |
| June 2025 | 1 | 1 | 0.0% | 0 |
| October 2025 | 29 | 29 | 96.6% | 0 |
| November 2025 | 19 | 19 | 79.0% | 0 |
| December 2025 | 32 | 31 | 74.2% | 1 |
| January 2026 | 8 | 8 | 75.0% | 0 |
| February 2026 | 2 | 2 | 50.0% | 0 |
| March 2026 | 27 | 26 | 61.5% | 1 |
| April 2026 | 30 | 29 | 93.1% | 1 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 19 | 19 | 84.2% | 0 |
| July 2026 | 18 | 18 | 66.7% | 0 |