WN434
WN434 (Southwest Airlines) is a multi-stop service on 35 routes, busiest Atlanta to St Louis. Of 794 departures recorded from October 2024 to July 2026, 72.7% left on time, according to the US BTS.
- On-time departures72.7%of 794 flights
- Average delay14.8 min
- July 202666▲ 83.3%vs July 2025
- Cancelled0.9%
- Legs flown under this number35
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 | 34 | 34 | 0.0% |
| February | 36 | 28 | ▼ 22.2% |
| March | 18 | 31 | ▲ 72.2% |
| April | 34 | 37 | ▲ 8.8% |
| May | 38 | 40 | ▲ 5.3% |
| June | 34 | 62 | ▲ 82.4% |
| July | 36 | 66 | ▲ 83.3% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 18 | – | in progress |
| November | 46 | – | – |
| December | 51 | – | – |
| Year to date (Jan–Jul) | 230 | 298 | ▲ 29.6% |
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 | 80.7% | 85.3% | ▲ 5.8% |
| February | 80.6% | 89.3% | ▲ 10.8% |
| March | 55.6% | 66.7% | ▲ 20.0% |
| April | 88.2% | 67.6% | ▼ 23.4% |
| May | 81.6% | 77.5% | ▼ 5.0% |
| June | 73.5% | 58.1% | ▼ 21.0% |
| July | 67.7% | 74.2% | ▲ 9.7% |
| August | 69.2% | – | – |
| September | 92.3% | – | – |
| October | 83.3% | – | in progress |
| November | 60.9% | – | – |
| December | 51.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.4% | 74.1% | ▼ 1.7% |
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 | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 1 | ▼ 80.0% |
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 99.1% 787
- Cancelled 0.9% 7
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 13 | 84.6% | 1 |
| November 2024 | 36 | 36 | 72.2% | 0 |
| December 2024 | 49 | 49 | 73.5% | 0 |
| January 2025 | 34 | 31 | 80.7% | 3 |
| February 2025 | 36 | 36 | 80.6% | 0 |
| March 2025 | 18 | 18 | 55.6% | 0 |
| April 2025 | 34 | 34 | 88.2% | 0 |
| May 2025 | 38 | 38 | 81.6% | 0 |
| June 2025 | 34 | 34 | 73.5% | 0 |
| July 2025 | 36 | 34 | 67.7% | 2 |
| August 2025 | 26 | 26 | 69.2% | 0 |
| September 2025 | 26 | 26 | 92.3% | 0 |
| October 2025 | 18 | 18 | 83.3% | 0 |
| November 2025 | 46 | 46 | 60.9% | 0 |
| December 2025 | 51 | 51 | 51.0% | 0 |
| January 2026 | 34 | 34 | 85.3% | 0 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 30 | 66.7% | 1 |
| April 2026 | 37 | 37 | 67.6% | 0 |
| May 2026 | 40 | 40 | 77.5% | 0 |
| June 2026 | 62 | 62 | 58.1% | 0 |
| July 2026 | 66 | 66 | 74.2% | 0 |