WN3456
WN3456 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Charlotte to St Louis. Of 412 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 412 flights
- Average delay13.6 min
- July 202619▲ 375.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number24
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 | 26 | 2 | ▼ 92.3% |
| February | 28 | 10 | ▼ 64.3% |
| March | 22 | 28 | ▲ 27.3% |
| April | 27 | 40 | ▲ 48.1% |
| May | 31 | 44 | ▲ 41.9% |
| June | 8 | 23 | ▲ 187.5% |
| July | 4 | 19 | ▲ 375.0% |
| August | 5 | – | – |
| September | 4 | – | – |
| October | 30 | – | in progress |
| November | 5 | – | – |
| December | 4 | – | – |
| Year to date (Jan–Jul) | 146 | 166 | ▲ 13.7% |
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 | 84.6% | 50.0% | ▼ 40.9% |
| February | 85.7% | 90.0% | ▲ 5.0% |
| March | 77.3% | 50.0% | ▼ 35.3% |
| April | 74.1% | 97.5% | ▲ 31.6% |
| May | 67.7% | 95.5% | ▲ 40.9% |
| June | 62.5% | 73.9% | ▲ 18.3% |
| July | 75.0% | 72.2% | ▼ 3.7% |
| August | 80.0% | – | – |
| September | 50.0% | – | – |
| October | 70.0% | – | in progress |
| November | 40.0% | – | – |
| December | 50.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.3% | 75.6% | ▲ 0.4% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| 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 99.5% 410
- Cancelled 0.5% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CLT STL Charlotte Douglas International Airport – St. Louis Lambert International Airport | 924 | 13.5 min | 81.1% | 74 |
| ELP DEN El Paso International Airport – Denver International Airport | 908 | 29.3 min | 67.2% | 58 |
| MKE STL General Mitchell International Airport – St. Louis Lambert International Airport | 511 | -6.0 min | 100.0% | 50 |
| MDW RSW Chicago Midway International Airport – Southwest Florida International Airport | 1,782 | 27.2 min | 57.6% | 33 |
| STL BNA St. Louis Lambert International Airport – Nashville International Airport | 437 | 2.5 min | 90.6% | 32 |
| HOU FLL William P. Hobby Airport – Fort Lauderdale Hollywood International Airport | 1,538 | 16.7 min | 67.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 14 | 14 | 78.6% | 0 |
| December 2024 | 25 | 24 | 54.2% | 1 |
| January 2025 | 26 | 26 | 84.6% | 0 |
| February 2025 | 28 | 28 | 85.7% | 0 |
| March 2025 | 22 | 22 | 77.3% | 0 |
| April 2025 | 27 | 27 | 74.1% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 8 | 8 | 62.5% | 0 |
| July 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 5 | 5 | 80.0% | 0 |
| September 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 30 | 30 | 70.0% | 0 |
| November 2025 | 5 | 5 | 40.0% | 0 |
| December 2025 | 4 | 4 | 50.0% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| February 2026 | 10 | 10 | 90.0% | 0 |
| March 2026 | 28 | 28 | 50.0% | 0 |
| April 2026 | 40 | 40 | 97.5% | 0 |
| May 2026 | 44 | 44 | 95.5% | 0 |
| June 2026 | 23 | 23 | 73.9% | 0 |
| July 2026 | 19 | 18 | 72.2% | 1 |