WN4645
WN4645 (Southwest Airlines) is a multi-stop service on 14 routes, busiest Indianapolis to Houston. Of 240 departures recorded from October 2024 to July 2026, 87.0% left on time, according to the US BTS.
- On-time departures87.0%of 240 flights
- Average delay3.7 min
- July 202627
- Cancelled0.4%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods12 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 30 | ▲ 1,400.0% |
| February | – | 53 | – |
| March | – | 8 | – |
| April | – | 3 | – |
| May | – | 5 | – |
| June | – | 23 | – |
| July | – | 27 | – |
| August | 4 | – | – |
| September | 4 | – | – |
| October | – | – | in progress |
| November | 20 | – | – |
| December | 17 | – | – |
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 periods12 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 79.3% | ▲ 58.6% |
| February | – | 96.2% | – |
| March | – | 75.0% | – |
| April | – | 100.0% | – |
| May | – | 80.0% | – |
| June | – | 95.7% | – |
| July | – | 96.3% | – |
| August | 75.0% | – | – |
| September | 75.0% | – | – |
| October | – | – | in progress |
| November | 90.0% | – | – |
| December | 64.7% | – | – |
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 periods12 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | 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 99.6% 239
- Cancelled 0.4% 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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IND HOU Indianapolis International Airport – William P. Hobby Airport | 1,387 | -1.8 min | 96.0% | 50 |
| MAF DAL Midland International Air and Space Port – Dallas Love Field | 513 | 1.4 min | 87.5% | 49 |
| HRL HOU Valley International Airport – William P. Hobby Airport | 446 | 6.5 min | 80.0% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 16 | 16 | 100.0% | 0 |
| December 2024 | 8 | 8 | 62.5% | 0 |
| January 2025 | 2 | 2 | 50.0% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 20 | 20 | 90.0% | 0 |
| December 2025 | 17 | 17 | 64.7% | 0 |
| January 2026 | 30 | 29 | 79.3% | 1 |
| February 2026 | 53 | 53 | 96.2% | 0 |
| March 2026 | 8 | 8 | 75.0% | 0 |
| April 2026 | 3 | 3 | 100.0% | 0 |
| May 2026 | 5 | 5 | 80.0% | 0 |
| June 2026 | 23 | 23 | 95.7% | 0 |
| July 2026 | 27 | 27 | 96.3% | 0 |