WN457
WN457 (Southwest Airlines) is a multi-stop service on 31 routes, busiest St Louis to Washington. Of 753 departures recorded from October 2024 to July 2026, 66.3% left on time, according to the US BTS.
- On-time departures66.3%of 753 flights
- Average delay18.5 min
- July 202635▲ 2.9%vs July 2025
- Cancelled0.4%
- Legs flown under this number31
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 | 31 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 37 | 67 | ▲ 81.1% |
| April | 53 | 36 | ▼ 32.1% |
| May | 64 | 25 | ▼ 60.9% |
| June | 36 | 34 | ▼ 5.6% |
| July | 34 | 35 | ▲ 2.9% |
| August | 23 | – | – |
| September | 17 | – | – |
| October | 35 | – | in progress |
| November | 29 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 283 | 256 | ▼ 9.5% |
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 | 75.9% | 74.2% | ▼ 2.2% |
| February | 32.1% | 82.1% | ▲ 155.6% |
| March | 70.3% | 70.2% | ▼ 0.2% |
| April | 60.4% | 69.4% | ▲ 15.0% |
| May | 54.7% | 36.0% | ▼ 34.2% |
| June | 88.9% | 41.2% | ▼ 53.7% |
| July | 85.3% | 48.6% | ▼ 43.1% |
| August | 81.8% | – | – |
| September | 52.9% | – | – |
| October | 74.3% | – | in progress |
| November | 65.5% | – | – |
| December | 75.9% | – | – |
| Year-to-date average (Jan–Jul) | 66.8% | 60.2% | ▼ 9.8% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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% 750
- Cancelled 0.4% 3
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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 66.7% | 0 |
| December 2024 | 31 | 31 | 71.0% | 0 |
| January 2025 | 31 | 29 | 75.9% | 2 |
| February 2025 | 28 | 28 | 32.1% | 0 |
| March 2025 | 37 | 37 | 70.3% | 0 |
| April 2025 | 53 | 53 | 60.4% | 0 |
| May 2025 | 64 | 64 | 54.7% | 0 |
| June 2025 | 36 | 36 | 88.9% | 0 |
| July 2025 | 34 | 34 | 85.3% | 0 |
| August 2025 | 23 | 22 | 81.8% | 1 |
| September 2025 | 17 | 17 | 52.9% | 0 |
| October 2025 | 35 | 35 | 74.3% | 0 |
| November 2025 | 29 | 29 | 65.5% | 0 |
| December 2025 | 29 | 29 | 75.9% | 0 |
| January 2026 | 31 | 31 | 74.2% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 67 | 67 | 70.2% | 0 |
| April 2026 | 36 | 36 | 69.4% | 0 |
| May 2026 | 25 | 25 | 36.0% | 0 |
| June 2026 | 34 | 34 | 41.2% | 0 |
| July 2026 | 35 | 35 | 48.6% | 0 |