WN4450
WN4450 (Southwest Airlines) is a multi-stop service on 14 routes, busiest Denver to Houston. Of 462 departures recorded from October 2024 to July 2026, 65.5% left on time, according to the US BTS.
- On-time departures65.5%of 462 flights
- Average delay17.0 min
- July 202645
- Cancelled0.9%
- 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 periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 8 | 29 | ▲ 262.5% |
| February | 14 | 28 | ▲ 100.0% |
| March | 28 | 31 | ▲ 10.7% |
| April | 30 | 30 | 0.0% |
| May | 19 | 31 | ▲ 63.2% |
| June | 3 | 42 | ▲ 1,300.0% |
| July | – | 45 | – |
| August | – | – | – |
| September | – | – | – |
| October | 17 | – | in progress |
| November | 25 | – | – |
| December | 22 | – | – |
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 | 71.4% | 86.2% | ▲ 20.7% |
| February | 50.0% | 89.3% | ▲ 78.6% |
| March | 53.6% | 77.4% | ▲ 44.5% |
| April | 60.0% | 90.0% | ▲ 50.0% |
| May | 83.3% | 87.1% | ▲ 4.5% |
| June | 66.7% | 26.2% | ▼ 60.7% |
| July | – | 22.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 23.5% | – | in progress |
| November | 76.0% | – | – |
| December | 61.9% | – | – |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | – | 1 | – |
| 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 99.1% 458
- Cancelled 0.9% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 21 | 21 | 71.4% | 0 |
| December 2024 | 19 | 19 | 94.7% | 0 |
| January 2025 | 8 | 7 | 71.4% | 1 |
| February 2025 | 14 | 14 | 50.0% | 0 |
| March 2025 | 28 | 28 | 53.6% | 0 |
| April 2025 | 30 | 30 | 60.0% | 0 |
| May 2025 | 19 | 18 | 83.3% | 1 |
| June 2025 | 3 | 3 | 66.7% | 0 |
| October 2025 | 17 | 17 | 23.5% | 0 |
| November 2025 | 25 | 25 | 76.0% | 0 |
| December 2025 | 22 | 21 | 61.9% | 1 |
| January 2026 | 29 | 29 | 86.2% | 0 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 31 | 77.4% | 0 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 42 | 42 | 26.2% | 0 |
| July 2026 | 45 | 44 | 22.7% | 1 |