WN356
WN356 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Dallas to St Louis. Of 775 departures recorded from October 2024 to July 2026, 79.6% left on time, according to the US BTS.
- On-time departures79.6%of 775 flights
- Average delay11.5 min
- July 202650▲ 66.7%vs July 2025
- Cancelled0.5%
- Legs flown under this number32
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 | 64 | ▲ 88.2% |
| February | 30 | 53 | ▲ 76.7% |
| March | 31 | 36 | ▲ 16.1% |
| April | 30 | 27 | ▼ 10.0% |
| May | 31 | 27 | ▼ 12.9% |
| June | 30 | 58 | ▲ 93.3% |
| July | 30 | 50 | ▲ 66.7% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 40 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 216 | 315 | ▲ 45.8% |
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 | 90.3% | 87.5% | ▼ 3.1% |
| February | 80.0% | 64.2% | ▼ 19.8% |
| March | 64.5% | 94.4% | ▲ 46.4% |
| April | 80.0% | 63.0% | ▼ 21.3% |
| May | 96.8% | 33.3% | ▼ 65.6% |
| June | 80.0% | 74.1% | ▼ 7.3% |
| July | 89.7% | 86.0% | ▼ 4.1% |
| August | 81.5% | – | – |
| September | 84.6% | – | – |
| October | 100.0% | – | in progress |
| November | 85.0% | – | – |
| December | 63.6% | – | – |
| Year-to-date average (Jan–Jul) | 83.0% | 71.8% | ▼ 13.5% |
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 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 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 99.5% 771
- Cancelled 0.5% 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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 33 | 33 | 84.9% | 0 |
| December 2024 | 34 | 34 | 73.5% | 0 |
| January 2025 | 34 | 31 | 90.3% | 3 |
| February 2025 | 30 | 30 | 80.0% | 0 |
| March 2025 | 31 | 31 | 64.5% | 0 |
| April 2025 | 30 | 30 | 80.0% | 0 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 30 | 29 | 89.7% | 1 |
| August 2025 | 27 | 27 | 81.5% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 40 | 40 | 85.0% | 0 |
| December 2025 | 33 | 33 | 63.6% | 0 |
| January 2026 | 64 | 64 | 87.5% | 0 |
| February 2026 | 53 | 53 | 64.2% | 0 |
| March 2026 | 36 | 36 | 94.4% | 0 |
| April 2026 | 27 | 27 | 63.0% | 0 |
| May 2026 | 27 | 27 | 33.3% | 0 |
| June 2026 | 58 | 58 | 74.1% | 0 |
| July 2026 | 50 | 50 | 86.0% | 0 |