WN623
WN623 (Southwest Airlines) is a multi-stop service on 39 routes, busiest Austin to Las Vegas. Of 825 departures recorded from October 2024 to July 2026, 73.7% left on time, according to the US BTS.
- On-time departures73.7%of 825 flights
- Average delay14.0 min
- July 202631▼ 22.5%vs July 2025
- Cancelled0.1%
- Legs flown under this number39
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 64 | 32 | ▼ 50.0% |
| February | 46 | 28 | ▼ 39.1% |
| March | 27 | 31 | ▲ 14.8% |
| April | 37 | 43 | ▲ 16.2% |
| May | 45 | 48 | ▲ 6.7% |
| June | 37 | 31 | ▼ 16.2% |
| July | 40 | 31 | ▼ 22.5% |
| August | 47 | – | – |
| September | 48 | – | – |
| October | 30 | – | in progress |
| November | 39 | – | – |
| December | 45 | – | – |
| Year to date (Jan–Jul) | 296 | 244 | ▼ 17.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 84.4% | 77.4% | ▼ 8.2% |
| February | 76.1% | 64.3% | ▼ 15.5% |
| March | 100.0% | 83.9% | ▼ 16.1% |
| April | 94.6% | 67.4% | ▼ 28.7% |
| May | 91.1% | 35.4% | ▼ 61.1% |
| June | 51.4% | 74.2% | ▲ 44.5% |
| July | 32.5% | 71.0% | ▲ 118.4% |
| August | 78.7% | – | – |
| September | 68.8% | – | – |
| October | 96.7% | – | in progress |
| November | 87.2% | – | – |
| December | 64.4% | – | – |
| Year-to-date average (Jan–Jul) | 75.7% | 67.7% | ▼ 10.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 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 99.9% 824
- Cancelled 0.1% 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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 29 | 29 | 93.1% | 0 |
| December 2024 | 28 | 28 | 67.9% | 0 |
| January 2025 | 64 | 64 | 84.4% | 0 |
| February 2025 | 46 | 46 | 76.1% | 0 |
| March 2025 | 27 | 27 | 100.0% | 0 |
| April 2025 | 37 | 37 | 94.6% | 0 |
| May 2025 | 45 | 45 | 91.1% | 0 |
| June 2025 | 37 | 37 | 51.4% | 0 |
| July 2025 | 40 | 40 | 32.5% | 0 |
| August 2025 | 47 | 47 | 78.7% | 0 |
| September 2025 | 48 | 48 | 68.8% | 0 |
| October 2025 | 30 | 30 | 96.7% | 0 |
| November 2025 | 39 | 39 | 87.2% | 0 |
| December 2025 | 45 | 45 | 64.4% | 0 |
| January 2026 | 32 | 31 | 77.4% | 1 |
| February 2026 | 28 | 28 | 64.3% | 0 |
| March 2026 | 31 | 31 | 83.9% | 0 |
| April 2026 | 43 | 43 | 67.4% | 0 |
| May 2026 | 48 | 48 | 35.4% | 0 |
| June 2026 | 31 | 31 | 74.2% | 0 |
| July 2026 | 31 | 31 | 71.0% | 0 |